JPH0442586B2 - - Google Patents
Info
- Publication number
- JPH0442586B2 JPH0442586B2 JP18129683A JP18129683A JPH0442586B2 JP H0442586 B2 JPH0442586 B2 JP H0442586B2 JP 18129683 A JP18129683 A JP 18129683A JP 18129683 A JP18129683 A JP 18129683A JP H0442586 B2 JPH0442586 B2 JP H0442586B2
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- temperature
- liquid
- condenser
- machine
- 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
Links
- 239000003507 refrigerant Substances 0.000 claims description 71
- 239000007788 liquid Substances 0.000 claims description 54
- 238000010521 absorption reaction Methods 0.000 claims description 33
- 238000009833 condensation Methods 0.000 claims description 12
- 230000005494 condensation Effects 0.000 claims description 12
- 238000011109 contamination Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 7
- 230000002745 absorbent Effects 0.000 description 6
- 239000002250 absorbent Substances 0.000 description 6
- 239000006096 absorbing agent Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は、吸収冷凍機、吸収ヒートポンプ、吸
収冷温水機などの吸収式冷温媒体取得機（以下、
この種の機械という）に関し、特に冷媒中への吸
収液の混入の程度を測定する機構を備えたこの種
の機械に関する。[Detailed Description of the Invention] (a) Industrial Application Field The present invention is applicable to absorption cold/hot medium acquisition machines (hereinafter referred to as
The present invention relates to this type of machine), and particularly relates to this type of machine equipped with a mechanism for measuring the degree of mixing of absorption liquid into refrigerant.
(ロ) 従来技術
この種の機械においては、発生器内の吸収液を
沸騰させて冷媒を分離する際に分離された冷媒の
中に吸収液の小さな液滴が混入し、この混入が冷
媒を蒸発させる蒸発器の機能を悪化させて機械の
運転効率を著しく低下させる原因となつている。(B) Prior art In this type of machine, when the absorption liquid in the generator is boiled and the refrigerant is separated, small droplets of the absorption liquid are mixed into the separated refrigerant, and this mixture causes the refrigerant to be separated. This deteriorates the function of the evaporator and causes a significant drop in the operating efficiency of the machine.
それ故、この種の機械においては、冷媒中への
吸収液の混入の程度を測定する必要がある。 Therefore, in this type of machine, it is necessary to measure the degree of absorption liquid mixed into the refrigerant.
そして、この測定の手段として、従来、機械の
運転を停止して機械内の冷媒液を取出した後この
取出した冷媒液の比重を測つて吸収剤濃度を測定
する手作業の測定方法や、蒸発器の冷媒液溜め内
の冷媒液の電気伝導度を検出してこの冷媒液中に
吸収液の混入している度合を測定する方法が知ら
れている。 Conventionally, methods for this measurement include manual measurement methods in which the machine is stopped, the refrigerant liquid inside the machine is taken out, and the specific gravity of the removed refrigerant liquid is measured to measure the absorbent concentration. A known method is to measure the degree to which absorbing liquid is mixed in the refrigerant liquid by detecting the electrical conductivity of the refrigerant liquid in the refrigerant liquid reservoir of the refrigerant liquid.
しかし、前者にあつては測定作業が煩雑とな
り、後者にあつては冷媒中に機械の錆びや細かな
金属片がごく少量でも含まれると電気伝導度が大
きく変化するために、すなわち、測定上にノイズ
が大きいために、測定の信頼性に劣る欠点があつ
た。 However, in the former case, the measurement work is complicated, and in the latter case, if the refrigerant contains even a small amount of mechanical rust or small metal pieces, the electrical conductivity will change significantly. The disadvantage was that the reliability of measurements was poor due to large noise.
(ハ) 発明の目的
本発明は冷媒中への吸収液の混入の程度を的確
かつ簡便に測定する手段を備えたこの種の機械の
提供を目的としたものである。(c) Object of the Invention The object of the present invention is to provide a machine of this type that is equipped with means for accurately and easily measuring the degree of mixing of absorption liquid into refrigerant.
(ニ) 発明の構成
本発明は、この種の機械において、凝縮器の圧
力に相当する冷媒の凝縮温度と凝縮器内の冷媒液
の温度との差を検知し、この差によつて冷媒中へ
の吸収液の混入の度合を測る構成としたものであ
る。(D) Structure of the Invention The present invention detects the difference between the condensation temperature of the refrigerant corresponding to the pressure of the condenser and the temperature of the refrigerant liquid in the condenser in this type of machine, and detects the difference between the refrigerant and the temperature of the refrigerant liquid in the condenser. The structure is designed to measure the degree of contamination of the absorption liquid into the liquid.
本発明によれば、凝縮器におけるほぼ純粋な冷
媒の温度と吸収液の混入した冷媒の実際の温度と
の差を知ることができるので、吸収液の混入の程
度を的確かつ簡便に測定し得る。 According to the present invention, since it is possible to know the difference between the temperature of the almost pure refrigerant in the condenser and the actual temperature of the refrigerant mixed with the absorption liquid, it is possible to accurately and easily measure the degree of mixing of the absorption liquid. .
(ホ) 実施例
第１図は本発明吸収式冷温媒体取得機（以下、
本機という）の一実施例を示す概略構成説明図で
ある。第１図において、１は高温発生器、２は低
温発生機、３は凝縮器、４は蒸発器、５は吸収
器、６は低温溶液熱交換器、７は高温溶液熱交換
器、８は冷媒用のポンプ、９は吸収液用のポンプ
で、これら機器は冷媒の流れる管１０，１０′、
冷媒液の流下する管１１、冷媒液の還流する管１
２，１２′、吸収液の流れる管１３，１３′，１
４，１４′，１５，１５′で接続されて冷媒〔水〕
と吸収液〔臭化リチウム水溶液〕の循環路を構成
している。(E) Embodiment Figure 1 shows an absorption type refrigerant/hot medium acquisition machine of the present invention (hereinafter referred to as
1 is a schematic configuration explanatory diagram showing an embodiment of the present invention. In Figure 1, 1 is a high temperature generator, 2 is a low temperature generator, 3 is a condenser, 4 is an evaporator, 5 is an absorber, 6 is a low temperature solution heat exchanger, 7 is a high temperature solution heat exchanger, and 8 is a high temperature solution heat exchanger. A pump for the refrigerant, 9 is a pump for the absorption liquid, and these devices include pipes 10, 10' through which the refrigerant flows;
A pipe 11 through which the refrigerant liquid flows, a pipe 1 through which the refrigerant liquid flows back.
2, 12', pipes 13, 13', 1 through which absorption liquid flows
Connected at 4, 14', 15, 15' and refrigerant [water]
and a circulation path for the absorption liquid [lithium bromide aqueous solution].
１６は高温発生器１の燃焼加熱室、１７は低温
発生器２の加熱器、１８は蒸発器４の熱交換器、
１９および２０はそれぞれ吸収器５および凝縮器
３の熱交換器であり、２１は、燃焼加熱室１６に
燃料を供給する弁V′付きの管、２２，２２…は
燃焼ガスの流れる管、２３，２３′は、本機を冷
凍機として用いる場合には冷水や冷風などの冷媒
体を流通させ、また、本機をヒートポンプとして
用いる場合には排温水や廃蒸気などの低温の熱源
流体を流通させる管、２４，２４′，２４″は、本
機を冷凍機として用いる場合には冷却水や冷却用
空気などの冷却用の流体を流通させ、また、本機
をヒートポンプとして用いる場合には温水や温風
などの温媒体を流通させる管である。 16 is the combustion heating chamber of the high temperature generator 1, 17 is the heater of the low temperature generator 2, 18 is the heat exchanger of the evaporator 4,
19 and 20 are heat exchangers for the absorber 5 and condenser 3, respectively, 21 is a pipe with a valve V' that supplies fuel to the combustion heating chamber 16, 22, 22... are pipes through which combustion gas flows, 23 , 23' distributes a cooling medium such as cold water or cold air when this machine is used as a refrigerator, and distributes a low-temperature heat source fluid such as waste hot water or waste steam when this machine is used as a heat pump. The pipes 24, 24', and 24'' are used to flow cooling fluid such as cooling water or cooling air when the machine is used as a refrigerator, and to flow hot water when the machine is used as a heat pump. A pipe that circulates a hot medium such as hot air or hot air.
２５は凝縮機３の冷媒液溜め、２６は蒸発機４
の冷媒液溜め、２７は吸収器５の吸収液溜め、２
８は低温発生器２の吸収液溜めである。Ｒは、冷
媒液溜め２６の液面リレーで、ポンプ８の発停を
制御する。 25 is the refrigerant reservoir of the condenser 3, 26 is the evaporator 4
27 is an absorption liquid reservoir of the absorber 5;
8 is an absorption liquid reservoir of the low temperature generator 2. R is a liquid level relay of the refrigerant liquid reservoir 26, which controls starting and stopping of the pump 8.
そして、S1は凝縮器３内圧を感知する圧力検出
器、S2は凝縮器３の冷媒液溜め２５内の冷媒液の
温度を感知する温度検出器、C1は、圧力検出器
S1からの信号を受け、この検出器の感知圧力に相
当する純粋な冷媒の凝縮温度〔飽和温度〕を算出
する演算器、C2は、演算器C1と温度検出器S2か
らの信号を受け、この検出器の感知温度と演算器
C1の算出温度との差を算出し、さらに、この差
によつて冷媒中への吸収液の混入の度合（以下、
温入度という）を判断する判定器で、この判定器
および演算器C1にはマイクロプロセツサ−ユニ
ツトその他のコンピユータが内蔵されている。す
なわち、本機は検出器S1，S2、演算器C1および
判定器C2により成る混入度の測定機構を備えて
いるのである。 S1 is a pressure detector that senses the internal pressure of the condenser 3, S2 is a temperature detector that senses the temperature of the refrigerant liquid in the refrigerant reservoir 25 of the condenser 3, and C1 is a pressure detector.
A computing unit that receives the signal from S 1 and calculates the condensation temperature (saturation temperature) of pure refrigerant corresponding to the sensing pressure of this detector, C 2 is a computing unit that receives the signal from computing unit C 1 and temperature detector S 2 Then, calculate the sensing temperature of this detector and the calculation unit.
Calculate the difference from the calculated temperature of C 1 , and use this difference to determine the degree of mixing of the absorption liquid into the refrigerant (hereinafter referred to as
This judgment device and the calculation unit C1 have a built-in microprocessor unit and other computers. That is, this device is equipped with a contamination degree measuring mechanism consisting of detectors S 1 and S 2 , arithmetic unit C 1 , and determiner C 2 .
なお、V1は管１１に備えた開閉弁であり、２
９は、冷媒液溜め２５の冷媒液を吸収液溜め２７
に流下させるための管で、この管には開閉弁V2
が備えてある。そして、これら開閉弁21、V2の開
閉の切替が前述の測定機構の信号により行われる
ようになつている。 In addition, V 1 is an on-off valve provided in the pipe 11, and 2
9 is a liquid reservoir 27 that absorbs the refrigerant liquid in the refrigerant liquid reservoir 25.
This pipe is equipped with an on-off valve V2 .
is provided. Switching between opening and closing of these on-off valves 21 and V2 is performed by signals from the aforementioned measuring mechanism.
次に、このように構成された本機の動作の一例
を、第２図を参照しつつ、説明する。第２図は水
を冷媒に、臭化リチウム水溶液を吸収液に用いた
本機の運転の一例を示すデユーリング線図であ
る。 Next, an example of the operation of the machine configured as described above will be explained with reference to FIG. 2. FIG. 2 is a Duering diagram showing an example of the operation of this machine using water as a refrigerant and a lithium bromide aqueous solution as an absorption liquid.
今、本機の運転中、凝縮器３内圧すなわち圧力
検出機S1の感知圧力がＰmmHgである場合、第２
図Ｏから分かるように凝縮器３における純粋な冷
媒の凝縮温度はｔ℃である。そして、純粋な冷媒
の凝縮温度〔飽和温度〕と圧力〔飽和蒸気圧〕の
関係式が予めプログラムされている演算器C1は
圧力検出器S1から信号を受けて凝縮温度ｔ℃を算
出する。 Now, while the machine is operating, if the internal pressure of the condenser 3, that is, the sensed pressure of the pressure detector S1 is PmmHg, the second
As can be seen from Figure O, the condensation temperature of the pure refrigerant in the condenser 3 is t°C. Then, the computing unit C1 , in which the relational expression between the condensation temperature [saturation temperature] and the pressure [saturation vapor pressure] of pure refrigerant is programmed in advance, receives a signal from the pressure detector S1 and calculates the condensation temperature t°C. .
この場合、冷媒中に吸収液が殆んど混入してい
ないときには凝縮器３において凝縮する冷媒の温
度がほぼｔ℃となり、温度検出器S2の感知温度も
ほぼｔ℃となる。そして、温度検出器S2と演算器
C1からの信号を受けた判定器C2は、冷媒の凝縮
した実際の温度と算出温度との差が零に近いこと
を検知し、凝縮器３内の冷媒中に吸収液が殆んど
混入していないことを判定する。すなわち、測定
機構は混入度をほぼ零と測定する。 In this case, when almost no absorption liquid is mixed in the refrigerant, the temperature of the refrigerant condensed in the condenser 3 is approximately t°C, and the temperature sensed by the temperature detector S2 is also approximately t°C. And temperature detector S 2 and calculator
Judgment device C 2 receives the signal from C 1 and detects that the difference between the actual condensed temperature of the refrigerant and the calculated temperature is close to zero, indicating that almost no absorption liquid is present in the refrigerant in the condenser 3. Determine that there is no contamination. That is, the measuring mechanism measures the degree of contamination to be approximately zero.
また、この場合、何らかの原因で高温発生器
１、低温発生器２で分離される冷媒中に吸収液が
混入したときには、この冷媒の凝縮温度は純粋な
冷媒の凝縮温度よりも高くなる。例えば、この冷
媒の凝縮温度がt′℃になつたとすれば、温度検出
器S2の感知温度もほぼt′℃となり、判定器C2は冷
媒の凝縮した実際の温度と算出温度との差がほぼ
〔t′−ｔ〕℃であることを検知し、この冷媒の吸
収剤濃度がほぼａ％〔第２図ａ参照〕であること
を判定する。すなわち混入度をほぼａ％と測定す
る。 Further, in this case, if the absorption liquid is mixed into the refrigerant separated by the high temperature generator 1 and the low temperature generator 2 for some reason, the condensation temperature of this refrigerant will be higher than the condensation temperature of pure refrigerant. For example, if the condensation temperature of this refrigerant reaches t'°C, the temperature sensed by temperature detector S 2 will also be approximately t'°C, and determiner C 2 will measure the difference between the actual temperature at which the refrigerant condensed and the calculated temperature. It is detected that the temperature is approximately [t'-t] DEG C., and it is determined that the absorbent concentration of this refrigerant is approximately a% (see FIG. 2a). In other words, the degree of contamination is determined to be approximately a%.
そして、冷媒の凝縮した実際の温度と算出温度
との差が上限値（例えば、５℃）以上になると、
開閉弁V1が開から閉に切替られると同時に開閉
弁V2が閉から開に切替られ、凝縮器３の冷媒液
溜め２５内の冷媒液が吸収器５の吸収液溜め２７
内の吸収液中にいわゆるブローされるのである。 When the difference between the actual temperature at which the refrigerant condenses and the calculated temperature exceeds the upper limit (for example, 5°C),
At the same time as the on-off valve V 1 is switched from open to closed, the on-off valve V 2 is switched from closed to open, and the refrigerant liquid in the refrigerant liquid reservoir 25 of the condenser 3 is transferred to the absorption liquid reservoir 27 of the absorber 5.
It is blown into the absorbent liquid inside.
このように、本機に備えた測定機構は、凝縮器
３の冷媒中に混入している吸収剤の濃度を測定し
ているので、凝縮器３の冷媒液溜め２５内の冷媒
液と蒸発器４の冷媒液溜め２６内の冷媒液との合
せた冷媒液中に混入している吸収剤の濃度を測定
する従来のものにくらべて測定上の感度が低くて
も良く、また、吸収液の混入の程度によつて変化
する冷媒の凝縮温度を感知するようにしているの
で、電気伝導度を感知する従来のものにくらべて
冷媒中に含まれている吸収剤以外の不純物の影響
による測定上のノイズが小さく、測定の信頼性に
秀れている。 In this way, the measuring mechanism provided in this machine measures the concentration of the absorbent mixed in the refrigerant in the condenser 3, so the refrigerant liquid in the refrigerant reservoir 25 of the condenser 3 and the evaporator The measurement sensitivity may be lower than that of the conventional method that measures the concentration of the absorbent mixed in the refrigerant liquid in the refrigerant liquid reservoir 26 of No. 4. Since it senses the condensation temperature of the refrigerant, which changes depending on the degree of contamination, it is less sensitive to the effects of impurities other than the absorbent contained in the refrigerant, compared to conventional methods that detect electrical conductivity. It has low noise and excellent measurement reliability.
すなわち、この測定機構は、従来のものにくら
べて吸収液の混入の程度を的確に測ることができ
るので、、冷媒中に吸収液が混入したことによつ
て本機の運転効率が低下した場合にはその原因を
正しく知り得る実用的価値をもつものである。 In other words, this measurement mechanism can more accurately measure the degree of absorption liquid contamination compared to conventional ones, so if the operating efficiency of the machine decreases due to absorption liquid contamination in the refrigerant, has the practical value of correctly understanding the cause.
なお、この測定機構において、温度検出器S2の
代りに冷媒得溜め２５へ比重量の測定具を備え、
かつ、演算器C1には算出温度に対応する純粋な
冷媒液の比重量ρを更に算出する機能を持たせ、
測定具の測定した比重量すなわち吸収液の混入し
た冷媒液の比重量ρ′と算出比重量ρとの差を判定
器C2で検知させるようにしても、吸収液の混入
の程度を的確に測ることが可能である。 In addition, in this measuring mechanism, a specific weight measuring device is provided in the refrigerant reservoir 25 instead of the temperature detector S2 ,
In addition, the computing unit C1 is provided with a function to further calculate the specific weight ρ of the pure refrigerant liquid corresponding to the calculated temperature,
Even if the determination device C2 detects the difference between the specific weight measured by the measuring tool, that is, the specific weight ρ' of the refrigerant liquid mixed with the absorption liquid, and the calculated specific weight ρ, it is not possible to accurately determine the degree of mixing of the absorption liquid. It is possible to measure.
(ヘ) 発明の効果
以上のように、本発明吸収式冷温媒体取得機
は、凝縮器の圧力に相当する純粋な冷媒の凝縮温
度と凝縮器で凝縮した冷媒の実際の温度との差を
自動的に検知する測定機構を備えたものであるか
ら、冷媒中に吸収液の混入している度合を、手作
業で測るこの種の機械にくらべ、簡便に知ること
ができ、また、蒸発器の冷媒液溜め内の電気伝導
度を検知する測定機構を備えたこの種の機械にく
らべ、冷媒中に吸収液の混入している度合を高い
信頼度でもつて的確に知り得る利点を有する。(F) Effects of the Invention As described above, the absorption type refrigerant/hot medium acquisition device of the present invention automatically detects the difference between the condensation temperature of pure refrigerant corresponding to the pressure of the condenser and the actual temperature of the refrigerant condensed in the condenser. Since it is equipped with a measurement mechanism that detects the absorption liquid in the refrigerant, it is easier to determine the degree of absorption liquid mixed in the refrigerant compared to this type of machine that measures by hand. Compared to this type of machine equipped with a measuring mechanism for detecting the electrical conductivity in the refrigerant reservoir, this method has the advantage of being able to accurately determine the degree of absorption liquid mixed into the refrigerant with high reliability.
第１図は本発明吸収式冷温媒体取得機の一実施
例を示す概略構成説明図、第２図は第１図に示し
た吸収式冷温媒体取得機の運転の一例を示すデユ
ーリング線図である。
１……高温発生器、２……低温発生器、３……
凝縮器、４……蒸発器、５……吸収器、２５……
冷媒液溜め、C1……演算器、C2……判定器、S1
……圧力検出器、S2……温度検出器。
FIG. 1 is a schematic configuration explanatory diagram showing one embodiment of the absorption type cold/hot medium acquisition machine of the present invention, and FIG. 2 is a Dueling diagram showing an example of operation of the absorption type cold/hot medium acquisition machine shown in FIG. 1. . 1...High temperature generator, 2...Low temperature generator, 3...
Condenser, 4... Evaporator, 5... Absorber, 25...
Refrigerant reservoir, C 1 ...Calculator, C 2 ...Judgment device, S 1
...Pressure detector, S 2 ...Temperature sensor.
Claims (1)
の冷媒液の温度を感知する温度検出器、およびこ
の温度検出器が感知した温度と上記圧力検出器が
感知した圧力に相当する純粋な冷媒の凝縮温度と
の差によつて凝縮器内の冷媒の中に吸収液が混入
している度合を判定する判定器より成る測定機構
を備えたことを特徴とする吸収冷温媒体取得装
置。1. A pressure detector that senses the pressure in the condenser, a temperature detector that senses the temperature of the refrigerant liquid in the condenser, and a pure refrigerant corresponding to the temperature sensed by this temperature detector and the pressure sensed by the pressure detector. 1. An absorption cold/hot medium acquisition device comprising a measuring mechanism comprising a determiner that determines the degree to which absorption liquid is mixed into the refrigerant in the condenser based on the difference between the condensation temperature and the condensation temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18129683A JPS6071865A (en) | 1983-09-28 | 1983-09-28 | Absorption type cold and hot medium obtaining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18129683A JPS6071865A (en) | 1983-09-28 | 1983-09-28 | Absorption type cold and hot medium obtaining machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6071865A JPS6071865A (en) | 1985-04-23 |
| JPH0442586B2 true JPH0442586B2 (en) | 1992-07-13 |
Family
ID=16098196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18129683A Granted JPS6071865A (en) | 1983-09-28 | 1983-09-28 | Absorption type cold and hot medium obtaining machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6071865A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0240459A (en) * | 1988-08-01 | 1990-02-09 | Hitachi Zosen Corp | Crystal precipitation prevention of absorbing liquid in absorption refrigerator |
-
1983
- 1983-09-28 JP JP18129683A patent/JPS6071865A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6071865A (en) | 1985-04-23 |
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