JPH0670537B2 - Heat source steam flow controller for absorption refrigerator - Google Patents
Heat source steam flow controller for absorption refrigeratorInfo
- Publication number
- JPH0670537B2 JPH0670537B2 JP5865682A JP5865682A JPH0670537B2 JP H0670537 B2 JPH0670537 B2 JP H0670537B2 JP 5865682 A JP5865682 A JP 5865682A JP 5865682 A JP5865682 A JP 5865682A JP H0670537 B2 JPH0670537 B2 JP H0670537B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- heat source
- generator
- control valve
- source steam
- 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 - Lifetime
Links
Description
【発明の詳細な説明】 本発明は、吸収冷凍機（又は吸収ヒートポンプ）の熱源
蒸気流量制御装置に関し、特に起動時における熱源蒸気
流量を調節する制御装置に関する。The present invention relates to a heat source vapor flow rate control device for an absorption refrigerator (or an absorption heat pump), and more particularly to a control device for adjusting the heat source vapor flow rate at startup.
従来、吸収冷凍機において、発生器の熱源蒸気供給管に
制御弁を設け、該制御弁の開度を増減することによつて
熱源蒸気流量を調節することが行なわれている。しかし
乍ら、吸収冷凍機の起動時には、発生器内の圧力及び吸
収液温度が定常運転時に較べ低く、発生器の吸収液貯液
部に収納されている熱源供給管内圧が低くなつており、
熱源蒸気の制御弁出入口での圧力差が大きくなつている
ために、制御弁の開度を定常運転時と同様に増加させる
と急激に熱源蒸気が発生器に供給され、その結果熱源蒸
気管から所謂ハンマー音と称される騒音を発生したり、
吸収液が激しく沸騰して多量に冷媒循環系路へ混入し、
冷凍能力を喪失したり、或いは熱源蒸気発生装置側の蒸
気供給能力に悪影響を及ぼす等諸々の問題点がある。ま
た、吸収冷凍機の起動時に制御弁の開度を絞りすぎると
発生器への熱源蒸気供給量が不足気味となり、所定の冷
凍能力すなわち定常運転に達するまでの時間が長くなる
問題点所謂起動特性が悪くなる欠点がある。Conventionally, in an absorption refrigerator, a heat source steam supply pipe of a generator is provided with a control valve, and the heat source steam flow rate is adjusted by increasing or decreasing the opening degree of the control valve. However, when the absorption refrigerator is started, the pressure inside the generator and the temperature of the absorption liquid are lower than during steady operation, and the internal pressure of the heat source supply pipe stored in the absorption liquid storage part of the generator is low.
Since the pressure difference between the inlet and outlet of the control valve of the heat source steam is large, when the opening of the control valve is increased as in the steady operation, the heat source steam is rapidly supplied to the generator, and as a result, the heat source steam pipe It produces noise called a so-called hammer sound,
Absorbing liquid boils violently and a large amount is mixed into the refrigerant circulation system,
There are various problems such as loss of refrigerating capacity and adversely affecting steam supply capacity of the heat source steam generator side. Further, if the opening of the control valve is excessively narrowed at the time of starting the absorption refrigerator, the heat source steam supply amount to the generator tends to be insufficient, and the predetermined refrigerating capacity, that is, the time until it reaches steady operation becomes long. Has the drawback of becoming worse.
本発明は、斯る点に鑑み、発生器への熱源蒸気供給開始
から定常運転に移行するまでの一定時間内における吸収
液の温度上昇を予め設定し、この設定された吸収液温度
と発生器に設けた検出器から検知された吸収液温度とを
比較し、両温度の差に応じて制御弁の開度を増減する構
成を採ることにより、吸収冷凍機の起動時におけるハン
マー音の発生や吸収液の冷媒系路への混入を防止しつつ
起動特性を良好にすることを目的としたものである。In view of such a point, the present invention presets the temperature rise of the absorbing liquid within a fixed time from the start of the heat source steam supply to the generator to the shift to the steady operation, and the absorbing liquid temperature and the set generator are set. By comparing the absorption liquid temperature detected from the detector provided in the, and adopting a configuration to increase or decrease the opening of the control valve according to the difference between the two temperatures, the generation of hammer noise at the startup of the absorption refrigerator and The purpose is to improve the starting characteristics while preventing the absorption liquid from mixing into the refrigerant passage.
以下、本発明の実施例を図面に基いて説明する。第１図
において、（１）は高温発生器、（２）は低温再生器、
（３）は凝縮器、（４）は蒸発器、（５）は吸収器、
（６）及び（７）は低温及び高温溶液熱交換器、（８）
は冷媒ポンプ並びに（９）は溶液ポンプで、これらは気
密に配管接続されて冷凍サイクルを形成する。（10）は
蒸発器（４）に収納した冷水管、（１）は吸収器（５）
及び凝縮器（３）に収納した冷却水管、（12）は高温発
生器（１）の貯液部に収納した熱源蒸気供給管で、該管
には制御弁（13）が配設されている。（14）は発生器
（１）内の吸収液温を感知する温度センサーで、該セン
サーからの検出信号により制御器（15）を介して前記制
御弁（13）の開度を制御する。尚、（16）は冷水温度セ
ンサーで、定常運転時の冷水負荷の変動に応じて冷水温
度センサー（16）からの信号により温度調節器（17）を
介して制御弁（13）の開度を制御する。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, (1) is a high temperature generator, (2) is a low temperature regenerator,
(3) is a condenser, (4) is an evaporator, (5) is an absorber,
(6) and (7) are low and high temperature solution heat exchangers, (8)
Is a refrigerant pump and (9) is a solution pump, which are airtightly connected by piping to form a refrigeration cycle. (10) is a cold water pipe housed in the evaporator (4), (1) is an absorber (5)
And a cooling water pipe housed in the condenser (3), (12) a heat source steam supply pipe housed in the liquid storage part of the high temperature generator (1), and a control valve (13) is arranged in the pipe. . (14) is a temperature sensor that senses the temperature of the absorbing liquid in the generator (1), and controls the opening of the control valve (13) via the controller (15) according to the detection signal from the sensor. In addition, (16) is a cold water temperature sensor, and the opening degree of the control valve (13) is controlled via the temperature controller (17) by the signal from the cold water temperature sensor (16) according to the fluctuation of the cold water load during steady operation. Control.
第２図は、本発明熱源蒸気流量制御装置の実施例を示し
たブロツク図で、（14）′は第１図で示した温度センサ
ー（14）に相当する検出部、（15）′は第１図で示した
制御器（15）に相当する演算制御部で、該演算制御部は
記憶部（18）、比較演算部（19）及び制御部（20）とで
構成されている。前記記憶部（18）には、発生器（１）
への熱源蒸気供給開始から一定時間経過するまでの時間
に対する温度の関数値（第３図参照）が予めプログラム
されている。そして、前記比較演算部（19）には前記検
出部（14）′からの信号と記憶部（18）からの信号が入
力され、比較演算部（19）において発生器（１）へ熱源
蒸気を供給し始めてから一定時間経過するまでの或る時
刻における発生器（１）内吸収液温度と予めプログラム
されている温度とが比較されると共に吸収液温度とプロ
グラムされている温度との差が演算される。而して、或
る時刻における吸収液温度がプログラムされている温度
より低い場合には、その温度差の大小に例えば比例する
ように制御弁（13）の開度を増加させる指令信号が比較
演算部（19）から制御部（20）へ出力され、また、吸収
液温度がプログラムされている温度より高い場合には、
その温度差の大小に例えば比例するように制御弁（13）
の開度を減少させる指令信号が比較演算部（19）から制
御部（20）へ出力される。そして、比較演算部（19）か
らの指令信号に従つて制御部（20）により制御弁（13）
の開度が調節される。FIG. 2 is a block diagram showing an embodiment of the heat source vapor flow rate control device of the present invention. (14) 'is a detection unit corresponding to the temperature sensor (14) shown in FIG. The arithmetic control unit corresponds to the controller (15) shown in FIG. 1, and the arithmetic control unit includes a storage unit (18), a comparison arithmetic unit (19), and a control unit (20). The storage unit (18) includes a generator (1)
A function value (see FIG. 3) of the temperature with respect to the time from the start of the supply of the heat source steam to the unit to the elapse of a certain time is preprogrammed. Then, the signal from the detection unit (14) 'and the signal from the storage unit (18) are input to the comparison calculation unit (19), and the heat source steam is supplied to the generator (1) in the comparison calculation unit (19). The absorption liquid temperature in the generator (1) at a certain time from the start of supply to the elapse of a certain time is compared with the temperature programmed in advance, and the difference between the absorption liquid temperature and the programmed temperature is calculated. To be done. When the temperature of the absorbing liquid at a certain time is lower than the programmed temperature, a command signal for increasing the opening degree of the control valve (13) is compared and calculated so as to be proportional to the magnitude of the temperature difference. Output from the section (19) to the control section (20), and if the absorbing liquid temperature is higher than the programmed temperature,
Control valve (13) so as to be proportional to the magnitude of the temperature difference
A command signal for reducing the opening degree of is output from the comparison calculation unit (19) to the control unit (20). The control valve (13) is controlled by the control unit (20) in accordance with the command signal from the comparison calculation unit (19).
The opening degree of is adjusted.
このように、制御弁（13）の開度を調節して発生器
（１）への熱源蒸気流量を制御することにより、発生器
（１）内の吸収液温は記憶部（18）に予めプログラムさ
れている刻々の温度変化（第３図参照）をなぞるように
調整される。In this way, by adjusting the opening of the control valve (13) to control the heat source steam flow rate to the generator (1), the absorption liquid temperature in the generator (1) is stored in the storage unit (18) in advance. It is adjusted to trace the programmed momentary temperature change (see FIG. 3).
次に、第３図に示した線図は大型吸収冷凍機の試運転を
繰返し行なつて得られたデータに基いて作成した起動か
ら定常運転に至るまでの時間〔t0〜t1〕に対する発生器
（１）内吸収液温度変化〔T0〜T1〕の関係グラフであ
り、第４図は、第３図に示した時間に対する温度の関数
値を記憶部（18）にプログラムし、実験運転を行つた際
の刻々の熱源蒸気流量の測定データに基いて作成したグ
ラフであり、この実験運転によつて熱源蒸気供給管（1
2）からのハンマー音の発生がないことおよび吸収液の
冷媒系路への混入も冷凍機の性能への影響に対し無視で
きる程微少であることが確認され、かつ定常運転までの
移行時間も最短時間に近いことが確認できている。Next, the diagram shown in FIG. 3 is generated with respect to the time [t 0 to t 1 ] from startup to steady operation, which was created based on the data obtained by repeatedly performing the trial operation of the large absorption refrigerator. FIG. 4 is a relationship graph of the temperature change [T 0 to T 1 ] of the absorbing liquid in the vessel (1), and FIG. 4 shows the function value of temperature with respect to time shown in FIG. It is a graph created based on the measurement data of the heat source steam flow rate every moment when the operation is performed, and the heat source steam supply pipe (1
It was confirmed that the hammer sound from 2) was not generated, and that the absorption liquid was not mixed into the refrigerant passage so much that it could be ignored for the influence on the performance of the refrigerator, and the transition time to steady operation was also set. It has been confirmed that it is close to the shortest time.
尚、記憶部（18）にプログラムする関数値は必ずしも第
３図に示したものに限定されないことは無論のことであ
る。すなわち、吸収冷凍機又は吸収ヒートポンプの定格
能力、容量、使用状況等の条件によつて適宜選定すれば
良い。Needless to say, the function values programmed in the storage section (18) are not necessarily limited to those shown in FIG. That is, it may be appropriately selected according to the conditions such as the rated capacity, capacity, and usage of the absorption refrigerator or absorption heat pump.
このように、本発明熱源蒸気流量制御装置は、発生器
（１）への熱源蒸気供給開始から定常運転移行までの時
間と吸収液温度との好適な関係を選定し、この選定され
た時間に対する温度の関数値を装置の記憶部（18）にプ
ログラムし、検出部（14）′によつて感知される発生器
（１）内の実際の吸収液温とプログラムされた温度とを
比較演算部（19）で比較すると共に両温度の差を演算
し、該比較演算部からの指令信号により制御部（20）を
介して制御弁（13）の開度を調節するようにしたもので
あるから、発生器（１）内の吸収液温がプログラムされ
た関数値に沿うように、発生器（１）への熱源蒸気供給
量が制御される結果、吸収冷凍機又は吸収ヒートポンプ
の起動特性も良好となり、かつ、起動初期の所謂ハンマ
ー音の発生や吸収液の冷媒系路（３）および（４）への
多量の混入を防止でき、又熱源蒸気発生装置の蒸気供給
能力に悪影響を及ぼすことも避け得る。As described above, the heat source steam flow rate control device of the present invention selects a suitable relationship between the time from the start of the heat source steam supply to the generator (1) to the transition to the steady operation and the absorbing liquid temperature, and the selected time is selected. The function value of the temperature is programmed in the storage section (18) of the device, and the actual computing temperature of the absorbing liquid in the generator (1) sensed by the detection section (14) 'is compared with the programmed temperature section. Since the difference between the two temperatures is calculated at (19) and the difference between both temperatures is calculated, the opening of the control valve (13) is adjusted via the control section (20) by a command signal from the comparison calculation section. , The heat source vapor supply amount to the generator (1) is controlled so that the absorption liquid temperature in the generator (1) follows the programmed function value, and as a result, the starting characteristics of the absorption refrigerator or absorption heat pump are also good. In addition, the so-called hammer noise is generated at the beginning of startup and the refrigerant of the absorbing liquid. It is possible to prevent a large amount from being mixed into the system paths (3) and (4), and it is possible to avoid adversely affecting the steam supply capacity of the heat source steam generator.
尚、本発明熱源蒸気流量制御装置は、起動時における熱
源蒸気流量制御に限らず、例えば冷水低負荷状態が長時
間に亘つて継続し、発生器（１）内の吸収液温が低く維
持されている状況から、急に冷水負荷が全負荷状態に変
化した場合等、制御弁（13）の開度調節を冷水温度セン
サー（16）及び温度調節器（17）による制御で行なう代
りに冷水温度センサー（16）から制御器（15）への信号
を受けて吸収液温度センサー（14）及び制御器（15）に
よる制御を行なうようにすることもできる。この場合に
は、前記制御器（15）内に冷水負荷が急激に変化したこ
とを判断し、吸収液温度センサー（14）からの信号を入
力するように指令する判定部（図示せず）等を内蔵せし
めれば良い。The heat source steam flow rate control device of the present invention is not limited to the heat source steam flow rate control at the time of startup, and for example, the cold water low load state continues for a long time, and the absorption liquid temperature in the generator (1) is kept low. If the chilled water load suddenly changes to the full load condition, the chilled water temperature is used instead of controlling the opening of the control valve (13) by the chilled water temperature sensor (16) and the temperature controller (17). It is also possible to receive a signal from the sensor (16) to the controller (15) so that the absorption liquid temperature sensor (14) and the controller (15) perform control. In this case, a determination unit (not shown) that determines that the cold water load has suddenly changed in the controller (15) and issues an instruction to input a signal from the absorption liquid temperature sensor (14), etc. Should be built in.
以上のように、本発明熱源蒸気流量制御装置は、発生器
の熱源蒸気供給管に設けた制御弁、発生器内の吸収液温
度を感知する検出部、発生器への熱源蒸気供給開始から
一定時間経過するまでの時間に対する温度の関数値を予
めプログラムした記憶部、検出部からの温度信号と記憶
部からの温度信号とを比較すると共に両温度の差を演算
して検出部で感知した温度が記憶部に予めプログラムさ
れた温度より低いときはその温度差に対応して制御弁の
開度を増加させ、高いときはその温度差に対応して制御
弁の開度を減少させる信号を出力する比較演算部並びに
比較演算部からの信号により制御弁の開度を調節する制
御部から成るものであるから、吸収冷凍機又は吸収ヒー
トポンプの起動時における所謂ハンマー音と称される熱
源蒸気管からの騒音の発生や吸収液の冷媒系路への多量
の混入を防止でき、かつ起動特性も良好に維持でき、実
用上有益なものである。As described above, the heat source steam flow rate control device of the present invention includes the control valve provided in the heat source steam supply pipe of the generator, the detection unit for sensing the temperature of the absorbing liquid in the generator, and the constant supply of heat source steam to the generator. The temperature sensed by the detection unit by comparing the temperature signal from the storage unit and the detection unit preprogrammed with the function value of the temperature until the time elapses and the temperature signal from the storage unit and calculating the difference between both temperatures. When the temperature is lower than the temperature programmed in advance in the storage unit, a signal for increasing the opening of the control valve corresponding to the temperature difference is output, and when it is higher, the signal for decreasing the opening of the control valve corresponding to the temperature difference is output. From the heat source steam pipe, which is a so-called hammer noise at the time of starting the absorption refrigerator or absorption heat pump, since it is composed of a comparison calculation unit and a control unit that adjusts the opening degree of the control valve by a signal from the comparison calculation unit. Noisy Of prevent a large amount of contamination of the generation and absorption liquid refrigerant pathway of, and starting characteristics can be favorably maintained, but practically useful.
第１図は、本発明装置の一例を用いた吸収冷凍機の回路
構成概略説明図、第２図は、本発明装置の一例を示すブ
ロツク図、第３図は、第２図に示した装置の記憶部にプ
ログラムされた時間に対する温度の関数値の一例を示す
線図で、図中の実線は選定された吸収液温度変化を示
し、点線は定常運転時の吸収液温度を示す。又、第４図
は、第３図に示された関数値を記憶部にプログラムして
制御した場合の熱源蒸気流量の時間に対する関係線図
（実線）を示したものであり、図中点線は定常運転時の
熱源蒸気流量を示す。 （１）…発生器、（12）…熱源蒸気供給管、（13）…制
御弁、（14）…吸収液温度センサー、（14）′…検出
部、（15）…制御器、（18）…記憶部、（19）…比較演
算部、（20）…制御部。FIG. 1 is a schematic explanatory diagram of the circuit configuration of an absorption refrigerator using an example of the device of the present invention, FIG. 2 is a block diagram showing an example of the device of the present invention, and FIG. 3 is the device shown in FIG. 2 is a diagram showing an example of a function value of temperature with respect to time programmed in the storage unit of FIG. 4, the solid line in the figure shows the selected absorption liquid temperature change, and the dotted line shows the absorption liquid temperature during steady operation. Further, FIG. 4 is a relational diagram (solid line) with respect to time of the heat source steam flow rate when the function values shown in FIG. The heat source steam flow rate during steady operation is shown. (1) ... Generator, (12) ... Heat source steam supply pipe, (13) ... Control valve, (14) ... Absorbing liquid temperature sensor, (14) '... Detecting section, (15) ... Controller, (18) ... storage unit, (19) ... comparison calculation unit, (20) ... control unit.
Claims (1)
発生器内の吸収液温度を感知する検出部、発生器への熱
源蒸気供給開始から一定時間経過するまでの時間に対す
る温度の関数値を予めプログラムした記憶部、検出部か
らの温度信号と記憶部からの温度信号とを比較すると共
に両温度の差を演算して検出部で感知した温度が記憶部
に予めプログラムされた温度より、低いときはその温度
差に対応して制御弁の開度を増加させ、高いときはその
温度差に対応して制御弁の開度を減少させる信号を出力
する比較演算部並びに比較演算部からの信号により制御
弁の開度を調節する制御部から成る吸収冷凍機の熱源蒸
気流量制御装置。1. A control valve provided in a heat source steam supply pipe of a generator,
A detector that senses the temperature of the absorbing liquid in the generator, a memory that preprograms a function value of the temperature with respect to the time from the start of supplying the heat source vapor to the generator, and a temperature signal from the detector and the memory. When the temperature sensed by the detection unit is lower than the temperature programmed in advance in the storage unit by comparing the temperature signal from the control unit, the opening of the control valve is adjusted according to the temperature difference. Absorption refrigeration consisting of a comparison calculation unit that outputs a signal that increases the temperature and decreases the control valve opening according to the temperature difference, and a control unit that adjusts the control valve opening by a signal from the comparison calculation unit. Machine heat source steam flow controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5865682A JPH0670537B2 (en) | 1982-04-07 | 1982-04-07 | Heat source steam flow controller for absorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5865682A JPH0670537B2 (en) | 1982-04-07 | 1982-04-07 | Heat source steam flow controller for absorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58175769A JPS58175769A (en) | 1983-10-15 |
| JPH0670537B2 true JPH0670537B2 (en) | 1994-09-07 |
Family
ID=13090627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5865682A Expired - Lifetime JPH0670537B2 (en) | 1982-04-07 | 1982-04-07 | Heat source steam flow controller for absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0670537B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08172919A (en) * | 1994-12-27 | 1996-07-09 | Furuta Denki Kk | Bulk pot provided with multifunctional spacer |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3630775B2 (en) * | 1995-06-27 | 2005-03-23 | 三洋電機株式会社 | Heat input control method of absorption refrigerator |
| US6983617B2 (en) * | 2003-12-31 | 2006-01-10 | Utc Power, Llc | Efficient control for smoothly and rapidly starting up an absorption solution system |
-
1982
- 1982-04-07 JP JP5865682A patent/JPH0670537B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08172919A (en) * | 1994-12-27 | 1996-07-09 | Furuta Denki Kk | Bulk pot provided with multifunctional spacer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58175769A (en) | 1983-10-15 |
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