JPH0362987B2 - - Google Patents
Info
- Publication number
- JPH0362987B2 JPH0362987B2 JP24471087A JP24471087A JPH0362987B2 JP H0362987 B2 JPH0362987 B2 JP H0362987B2 JP 24471087 A JP24471087 A JP 24471087A JP 24471087 A JP24471087 A JP 24471087A JP H0362987 B2 JPH0362987 B2 JP H0362987B2
- Authority
- JP
- Japan
- Prior art keywords
- condensable gas
- pressure
- collection chamber
- absorption
- chamber
- 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
- 238000010521 absorption reaction Methods 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 19
- 239000003507 refrigerant Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 description 7
- 239000006096 absorbing agent Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002184 metal Substances 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の不凝縮ガス排出装置に関
する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a non-condensable gas discharge device for an absorption refrigerator.
(ロ) 従来の技術
従来此種の吸収冷凍機の不凝縮ガス排出装置は
特公昭61−25993号公報に記載されているように
以下に述べるものが公知となつている。(b) Prior Art Conventionally, the following non-condensable gas discharge device for this type of absorption refrigerator is known as described in Japanese Patent Publication No. 61-25993.
不凝縮ガス排出装置は、吸収冷凍機内の不凝縮
ガスを抽気室内に導入し、この導入した不凝縮ガ
スが所定量蓄積されると、圧力検知器がこの圧力
を検知して動作し排気ポンプを稼働させ、抽気室
内の不凝縮ガスを排出するようにしていた。 The non-condensable gas discharge device introduces the non-condensable gas in the absorption refrigerator into the bleed chamber, and when the introduced non-condensable gas accumulates in a predetermined amount, the pressure detector detects this pressure and operates to start the exhaust pump. It was operated to exhaust non-condensable gas from the bleed chamber.
(ハ) 発明が解決しようとする問題点
しかし、従来此種の吸収冷凍機の不凝縮ガス排
出装置は、不凝縮ガスが所定量蓄積したとき排気
ポンプがこの不凝縮ガスを機外へ排出するもので
あつた。このため、例えば配管の接続部分等に小
さな亀裂が生じ、この亀裂から外気（空気）の流
入がある場合も内部の不凝縮ガス発生の場合と区
別できず、前記排気ポンプがこの外気を機外へ排
出していた。(c) Problems to be solved by the invention However, in the conventional non-condensable gas discharge device of this type of absorption refrigerator, when a predetermined amount of non-condensable gas has accumulated, the exhaust pump discharges this non-condensable gas to the outside of the machine. It was hot. For this reason, for example, if a small crack occurs in a pipe connection, and outside air (air) flows in through this crack, it cannot be distinguished from the case where non-condensable gas is generated inside the machine, and the exhaust pump pumps this outside air outside the machine. It was being discharged to.
このような装置においては、排気ポンプの稼働
回数が多くなつたり、あるいは外気流入のため機
内の金属部分が腐食するという問題を生じる。 In such a device, problems arise in that the exhaust pump has to be operated many times or that metal parts inside the device corrode due to the inflow of outside air.
本発明は前述した従来技術の問題に鑑みてなさ
れたものであり、外気の流入を検知し、かつ、こ
れを報知できる吸収冷凍機の不凝縮ガス排出装置
の提供を技術的課題とする。 The present invention has been made in view of the problems of the prior art described above, and its technical object is to provide a non-condensable gas discharge device for an absorption refrigerator that can detect and notify the inflow of outside air.
(ニ) 問題点を解決するための手段
吸収冷凍機内に不凝縮ガスが蓄積する原因とし
て考えられるものは、内部からの不凝縮ガスの発
生、そして外気の流入の２つである。この外気の
流入による内部圧力の上昇速度は、内部からの不
凝縮ガスの発生による内部圧力の上昇速度よりか
なり大きいことがわかつている。(d) Measures to solve the problem There are two possible causes of non-condensable gas accumulating inside the absorption refrigerator: generation of non-condensable gas from inside and inflow of outside air. It is known that the rate of increase in internal pressure due to the inflow of outside air is considerably greater than the rate of increase in internal pressure due to generation of non-condensable gas from inside.
本発明は前述した従来技術の問題点を解決する
ために、前記吸収冷凍機の内部圧力の上昇速度の
大きさをとらえて外気の流入を検出しようとする
ものである。すなわち、捕集室内の圧力を感知す
る圧力検知器と、この圧力検知器からの信号を入
力して前記圧力の上昇速度を算出する演算装置
と、この演算装置からの信号により使用者へ警報
を知らせる報知装置とを設けたものである。 In order to solve the problems of the prior art described above, the present invention attempts to detect the inflow of outside air by determining the rate of increase in the internal pressure of the absorption refrigerator. That is, there is a pressure detector that senses the pressure inside the collection chamber, a calculation device that inputs the signal from this pressure sensor and calculates the rate of increase in the pressure, and a signal from this calculation device that sends an alarm to the user. It is equipped with a notification device to notify the user.
(ホ) 作用
本発明における吸収冷凍機の不凝縮ガス排出装
置においては、演算装置が圧力検知器からの信号
を入力して捕集室内の圧力の上昇速度を算出し、
この圧力の上昇速度を予め決められている設定値
未満と判定した場合、外気の流入がないものとし
て報知装置を稼働させる信号を出力することはな
い。(e) Effect In the non-condensable gas discharge device for an absorption refrigerating machine according to the present invention, the calculation device inputs the signal from the pressure detector and calculates the rate of increase in pressure in the collection chamber,
If it is determined that the rate of increase in pressure is less than a predetermined set value, it is assumed that there is no inflow of outside air, and a signal for operating the notification device is not output.
しかし、前記演算装置は前記圧力の上昇速度を
予め決められている設定値以上と判定した場合、
外気の流入があるものとして排気ポンプおよび報
知装置を稼働させる信号を出力、排気ポンプ及び
報知装置を稼働させる。 However, when the calculation device determines that the rate of increase in the pressure is equal to or higher than a predetermined set value,
Assuming that there is an inflow of outside air, a signal is output to operate the exhaust pump and the notification device, and the exhaust pump and the notification device are activated.
(ヘ) 実施例
第１図は本発明による吸収冷凍機の不凝縮ガス
排出装置を示した概略構成説明図で、１は吸収冷
凍機の蒸発器および吸収器より成る蒸発吸収器、
２は不凝縮ガスを導入し、かつ、著溜するための
容器で、この容器の上部には抽気室３、下部には
気液分離室４、中間部には捕出室５が形成されて
いる。また、６は上部を抽気室３に開口し、下端
を気液分離室４の液中に開口した筒状の管であ
る。７は蒸発吸収器１の気相部と抽気室３とを接
続した管、８は一端を気液分離室４底部と接続し
他端を吸収液溜め９上部に開口させて蒸発吸収器
１と接続した吸収液の戻し管、１０は一端を管
（吸収液ポンプからの吸収液を発生器へ導く管）
に接続し他端を管６の気相部に開口した吸収液の
送られる管、１１は一端を抽気室３と接続し他端
をオイルトラツプ１２と接続し、且つ、その途中
に手動弁１３，１４を備えている管、１５は一端
を捕集室５と接続し、且つ、他端を前記手動弁１
３，１４間の管１１とに接続し、更にその途中に
手動弁１６を備えている管、１７は一端を手動弁
１３，１４間の管１１と接続し、且つ、他端を手
動弁１４とオイルトラツプ１２との間の管１１に
接続し、更にその途中に電磁弁１８，１９および
マノメーター２０を備えた管、２１は前記オイル
トラツプ１２と排気ポンプ２１の吸込口とを接続
した管である。(F) Embodiment FIG. 1 is a schematic structural explanatory diagram showing a non-condensable gas discharge device for an absorption refrigerating machine according to the present invention, and 1 is an evaporative absorber consisting of an evaporator and an absorber of the absorption refrigerating machine;
Reference numeral 2 denotes a container for introducing and condensing non-condensable gas, and this container has an air bleed chamber 3 in the upper part, a gas-liquid separation chamber 4 in the lower part, and a capture chamber 5 in the middle part. There is. Further, 6 is a cylindrical tube whose upper end is open to the air bleed chamber 3 and whose lower end is opened into the liquid in the gas-liquid separation chamber 4 . A pipe 7 connects the gas phase part of the evaporator-absorber 1 and the extraction chamber 3, and a pipe 8 connects one end to the bottom of the gas-liquid separation chamber 4 and opens the other end to the upper part of the absorbent reservoir 9. Connected absorption liquid return pipe, 10 is a pipe at one end (tube that leads the absorption liquid from the absorption liquid pump to the generator)
A pipe 11 through which the absorption liquid is sent, the other end of which is connected to the gas phase part of the pipe 6, has one end connected to the bleed chamber 3 and the other end connected to the oil trap 12, and a manual valve 13, A pipe 15 has one end connected to the collection chamber 5 and the other end connected to the manual valve 1.
A pipe 17 has one end connected to the pipe 11 between the manual valves 13 and 14, and the other end connected to the manual valve 14. A pipe 21 is connected to the pipe 11 between the oil trap 12 and the oil trap 12, and is further provided with solenoid valves 18, 19 and a manometer 20 in the middle.
また、２３は捕集室５内の圧力を感知する圧力
検知器で、圧力の増減を電気抵抗の増減としてと
らえ、この信号を出力するものである。２４は演
算装置としてのマイクロコンピユータで、第２図
に示すフローチヤートの処理を行う。うなわち、
前記捕集室５の圧力が70mmHg（吸収冷凍機
300RTの場合）以上になるか又は捕集室５の圧
力の上昇速度が３mmHg／ｈとなつた場合、マイ
クロコンピユータ２４は排気ポンプ２２を稼働さ
せる信号を出力するものである。２５は報知装置
であり、ランプおよび／またはブザー等から構成
されている。 Further, 23 is a pressure detector that senses the pressure inside the collection chamber 5, which detects the increase or decrease in pressure as an increase or decrease in electrical resistance, and outputs this signal. 24 is a microcomputer as an arithmetic unit, which performs the processing shown in the flow chart shown in FIG. Unawachi,
The pressure in the collection chamber 5 is 70 mmHg (absorption refrigerator
300 RT) or when the rate of increase in pressure in the collection chamber 5 reaches 3 mmHg/h, the microcomputer 24 outputs a signal to operate the exhaust pump 22. Reference numeral 25 denotes a notification device, which includes a lamp and/or a buzzer.
尚、前記設定値70mmHgあるいは３mmHg／ｈは
以下のようして求めた。300RTの吸収冷凍機の
不凝縮ガスによる捕集室５内の圧力上昇速度は、
外気等の流入がないと仮定すると、１mmHg／ｈ
弱である。そして、１週間（70時間の使用で１週
間）に１度排気ポンプ２２を稼働させたいとする
と70mmHg弱の値が求められるが排気を行つた後
の捕集室５の圧力は６〜７mmHg程度であるので
設定値を前記設定値70mmHgと求めた。そして本
装置では、決められた曜日の運転開始時に必ず排
気を行うように設定している。また、吸収冷凍機
内に外気の流入がないと仮定すると捕集室５の圧
力上昇速度は１mmHg／ｈ弱であるのでこれと区
別するために約２mmHg／ｈの余裕をもつて３mm
Hg／ｈと求めた。 The set value of 70 mmHg or 3 mmHg/h was determined as follows. The rate of pressure rise in the collection chamber 5 due to non-condensable gas in the 300 RT absorption refrigerator is:
Assuming there is no inflow of outside air, etc., 1mmHg/h
It is weak. If you want to operate the exhaust pump 22 once a week (one week after 70 hours of use), a value of just under 70 mmHg is required, but the pressure in the collection chamber 5 after exhausting is about 6 to 7 mmHg. Therefore, the set value was determined to be the above set value of 70 mmHg. This device is set to always perform exhaust at the start of operation on a predetermined day of the week. Also, assuming that there is no inflow of outside air into the absorption refrigerator, the pressure rise rate in the collection chamber 5 is a little less than 1 mmHg/h, so in order to distinguish from this, 3 mm with a margin of about 2 mmHg/h is used.
It was calculated as Hg/h.
次に、このように構成された吸収冷凍機の不凝
縮ガス排出装置（以下、本装置と記す）の動作を
説明する。 Next, the operation of the non-condensable gas discharge device (hereinafter referred to as the present device) for the absorption refrigerator configured as described above will be explained.
本装置を備えている吸収冷凍機が運転される
と、蒸発吸収器１内の不凝縮ガスは、吸収液ポン
プ（図示せず）の吐出力で管１０から噴射される
吸収液のエゼクタ作用により、管７経由で蒸発吸
収器１内の冷媒蒸気と共に抽気室３へ吸引され
る。なお、このとき手動弁１３，１４および電磁
弁１８，１９は閉じられており、手動弁１６は開
かれている。吸引された冷媒蒸気は噴射された吸
収液に吸収され、吸収液は管６を流下して気液分
離室４、管８経由で吸収液溜め９へ戻る。また、
不凝縮ガスは気泡となつて吸収液と共に管６を流
下して気液分離室４に至り、この気液分離室に至
つた不凝縮ガスは浮上して捕集室５に蓄えられ
る。 When the absorption refrigerator equipped with this device is operated, the non-condensable gas in the evaporative absorber 1 is removed by the ejector action of the absorption liquid injected from the pipe 10 by the discharge force of the absorption liquid pump (not shown). , is drawn into the bleed chamber 3 along with the refrigerant vapor in the evaporator-absorber 1 via the pipe 7. Note that at this time, the manual valves 13 and 14 and the solenoid valves 18 and 19 are closed, and the manual valve 16 is opened. The sucked refrigerant vapor is absorbed by the injected absorption liquid, and the absorption liquid flows down the pipe 6 and returns to the absorption liquid reservoir 9 via the gas-liquid separation chamber 4 and the pipe 8. Also,
The non-condensable gas becomes bubbles and flows down the pipe 6 together with the absorption liquid to reach the gas-liquid separation chamber 4. The non-condensable gas that has reached the gas-liquid separation chamber floats up and is stored in the collection chamber 5.
吸収冷凍機の運転が開始されると、マイクロコ
ンピユータ２４は圧力検知器２３からの信号を読
み込む。前記マイクロコンピユータ２４は、この
値（P1）を第１回目の記録値としてRAM内に記
憶する。このときの圧力が70mmHg以上であれば、
マイクロコンピユータ２４は排気ポンプ２２を稼
働させる信号を出力する。しかし、このときの圧
力が70mm未満であると、マイクロコンピユータ２
４は今回の記録時刻から１時間経過するまで圧力
検知器２３からの信号を所定時間毎に入力し、捕
集室３内の圧力が70mmHg以上か否かの判定を行
つている。 When the absorption refrigerator starts operating, the microcomputer 24 reads the signal from the pressure sensor 23. The microcomputer 24 stores this value (P 1 ) in the RAM as the first recorded value. If the pressure at this time is 70mmHg or more,
The microcomputer 24 outputs a signal to operate the exhaust pump 22. However, if the pressure at this time is less than 70mm, the microcomputer 2
4 inputs the signal from the pressure detector 23 at predetermined time intervals until one hour has passed from the current recording time, and determines whether the pressure inside the collection chamber 3 is 70 mmHg or more.
前回の記録時刻から１時間経過すると、この時
刻における捕集室５内の圧力P2をマイクロンコ
ンピユータ２４はRAM内に記憶される。そし
て、マイクロコンピユータ２４は圧力の上昇速度
（今回の圧力P2−前回の圧力P1）を算出し、更
に、この上昇速度を設定値（３mmHg／ｈ）以上
か否かを判定する。 When one hour has passed since the previous recording time, the micron computer 24 stores the pressure P 2 in the collection chamber 5 at this time in the RAM. Then, the microcomputer 24 calculates the rate of increase in pressure (current pressure P2 - previous pressure P1 ), and further determines whether this rate of increase is equal to or higher than a set value (3 mmHg/h).
マイクロコンピユータ２４は前記上昇速度を設
定値以上と判定した場合、マイクロコンピユータ
２４は報知装置２５および排気ポンプ２２を稼働
させる信号を出力し、報知装置２５および排気ポ
ンプ２２を稼働させ、使用者に対して吸収冷凍機
に外気の流入のあることを報知すると共に吸収冷
凍機内の不凝縮ガスを機外に排出する。 When the microcomputer 24 determines that the rising speed is equal to or higher than the set value, the microcomputer 24 outputs a signal to operate the notification device 25 and the exhaust pump 22, operates the notification device 25 and the exhaust pump 22, and alerts the user. This notifies the absorption refrigerator of the inflow of outside air and discharges the non-condensable gas inside the absorption refrigerator to the outside.
前記マイクロコンピユータ２４が前記上昇速度
を設定値未満と判定した場合、今回の圧力の記録
時刻から次の圧力の時刻（１時間後）まで圧力検
知器２３からの信号を入力し、捕集室５内の圧力
が70mmHg以上か否かの判定を所定時間毎に行い
続けている。 If the microcomputer 24 determines that the rising speed is less than the set value, it inputs the signal from the pressure detector 23 from the current pressure recording time to the next pressure recording time (one hour later), and It continues to determine whether the internal pressure is 70 mmHg or higher at predetermined intervals.
(ト) 発明の効果
以上のように、本発明における吸収冷凍機の不
凝縮ガス排出装置は、捕集室の圧力上昇速度を算
出し、この圧力上昇速度の大きさによつて外気の
流入の有無を判定するものである。このため、本
発明における吸収冷凍機の不凝縮ガス排出装置
は、外気の流入によつて捕集室に不凝縮ガスの蓄
積した場合、これを内部の不凝縮ガス発生により
蓄積した場合と区別し、使用者へ報知装置で報知
することができる。(G) Effects of the Invention As described above, the non-condensable gas discharge device for an absorption refrigerating machine according to the present invention calculates the rate of pressure rise in the collection chamber, and determines the inflow of outside air based on the magnitude of this pressure rise rate. This is to determine the presence or absence. Therefore, the non-condensable gas discharge device of the absorption refrigerator according to the present invention distinguishes between cases where non-condensable gas accumulates in the collection chamber due to the inflow of outside air and cases where this accumulates due to internal non-condensable gas generation. , the user can be notified by a notification device.
第１図は本発明における吸収冷凍機の不凝縮ガ
ス排出装置の概略構成説明図、第２図はフローチ
ヤートである。
３……抽気室、４……気液分離室、５……捕集
室、６……管、２２……排気ポンプ、２３……圧
力検知器、２４……マイクロコンピユータ、２５
……報知装置。
FIG. 1 is a schematic structural explanatory diagram of a non-condensable gas discharge device for an absorption refrigerator according to the present invention, and FIG. 2 is a flowchart. 3... Air bleed chamber, 4... Gas-liquid separation chamber, 5... Collection chamber, 6... Pipe, 22... Exhaust pump, 23... Pressure detector, 24... Microcomputer, 25
...Notification device.
Claims (1)
抽気路経由で抽気室内に抽気し、抽気された冷媒
蒸気を吸収液に吸収させつつ不凝縮ガスと分離し
て不凝縮ガスを捕集室に貯え、捕集室内の不凝縮
ガスを排出路経由で排気ポンプにより機外へ排気
する不凝縮ガス排出装置において、前記捕集室内
の圧力を感知する圧力検知器と、この圧力検知器
からの信号を入力して前記圧力の上昇速度を算出
する演算装置と、この演算装置からの信号により
使用者へ警報を発する報知装置とを備えているこ
とを特徴とする吸収冷凍機の不凝縮ガス排出装
置。1. Bleed the non-condensable gas in the absorption refrigerator together with the refrigerant vapor into the bleed chamber via the bleed path, and separate the extracted refrigerant vapor from the non-condensable gas while absorbing it in the absorption liquid, and store the non-condensable gas in the collection chamber. , a non-condensable gas exhaust device that exhausts non-condensable gas in a collection chamber to the outside of the machine via an exhaust passage with an exhaust pump, which includes a pressure detector that senses the pressure inside the collection chamber, and a signal from the pressure detector. A non-condensable gas discharge device for an absorption refrigerating machine, characterized in that it is equipped with an arithmetic device that receives input and calculates the speed of increase in pressure, and an alarm device that issues an alarm to a user based on a signal from the arithmetic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24471087A JPS6488074A (en) | 1987-09-29 | 1987-09-29 | Noncondensable gas discharger for absorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24471087A JPS6488074A (en) | 1987-09-29 | 1987-09-29 | Noncondensable gas discharger for absorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6488074A JPS6488074A (en) | 1989-04-03 |
| JPH0362987B2 true JPH0362987B2 (en) | 1991-09-27 |
Family
ID=17122769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24471087A Granted JPS6488074A (en) | 1987-09-29 | 1987-09-29 | Noncondensable gas discharger for absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6488074A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02275263A (en) * | 1989-04-14 | 1990-11-09 | Sanyo Electric Co Ltd | Absorptive type freezer |
| JP2575966B2 (en) * | 1990-04-17 | 1997-01-29 | 矢崎総業株式会社 | Absorption chiller / heater |
| US8055453B2 (en) | 2008-09-19 | 2011-11-08 | Raytheon Company | Sensing and estimating in-leakage air in a subambient cooling system |
| US7935180B2 (en) | 2008-10-10 | 2011-05-03 | Raytheon Company | Removing non-condensable gas from a subambient cooling system |
| JP5816134B2 (en) * | 2012-06-07 | 2015-11-18 | 荏原冷熱システム株式会社 | Absorption heat pump and operation method of absorption heat pump |
-
1987
- 1987-09-29 JP JP24471087A patent/JPS6488074A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6488074A (en) | 1989-04-03 |
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