JPH0427467B2 - - Google Patents
Info
- Publication number
- JPH0427467B2 JPH0427467B2 JP14355583A JP14355583A JPH0427467B2 JP H0427467 B2 JPH0427467 B2 JP H0427467B2 JP 14355583 A JP14355583 A JP 14355583A JP 14355583 A JP14355583 A JP 14355583A JP H0427467 B2 JPH0427467 B2 JP H0427467B2
- Authority
- JP
- Japan
- Prior art keywords
- load
- side heat
- temperature
- control valve
- heat source
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 238000010521 absorption reaction Methods 0.000 claims description 17
- 230000007423 decrease Effects 0.000 description 11
- 238000005057 refrigeration Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 206010070834 Sensitisation Diseases 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000008313 sensitization 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、負荷に見合う冷水を取り出す吸収冷
凍機の制御装置に関し、特に負荷側熱交換器が複
数台並設されている吸収冷凍機の制御装置に関す
る。[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a control device for an absorption chiller that takes out cold water in accordance with the load, and particularly to an absorption chiller in which a plurality of load-side heat exchangers are installed in parallel. The present invention relates to a control device.
(ロ) 従来技術
従来、吸収冷凍機においては、蒸発器から取り
出される冷水の温度を感知する検出器により負荷
の増感を検知し、この温度検出器の信号で発生器
の熱源制御弁の開度を調節することにより負荷側
熱交換器へ供給する冷水の温度コントロールを行
う手段が知られている。(b) Prior art Conventionally, in absorption chillers, load sensitization is detected by a detector that senses the temperature of cold water taken out from the evaporator, and the signal from this temperature detector is used to open the heat source control valve of the generator. Means for controlling the temperature of chilled water supplied to a load-side heat exchanger by adjusting the temperature is known.
しかし、この従来の手段にあつては、負荷が急
に減少した時、検出器が冷水の温度変化を感知し
て熱源制御弁を動作させるまでに時間の遅れを生
じるため、その間、負荷に対して吸収冷凍機の入
熱が過剰となり、冷水の温度が低くなり過ぎる欠
点を有している。 However, with this conventional method, when the load suddenly decreases, there is a time delay until the detector senses the temperature change of the chilled water and operates the heat source control valve. This has the drawback that the heat input to the absorption refrigerator becomes excessive and the temperature of the chilled water becomes too low.
そのため、複数台の負荷側熱交換器が並設され
ている吸収冷凍機においては、負荷側熱交換器の
運転台数を急に減らした場合、従来の手段のみで
は冷水温度の過度の低下を防ぎ得ないという問題
があつた。 Therefore, in absorption chillers where multiple load-side heat exchangers are installed in parallel, if the number of load-side heat exchangers in operation is suddenly reduced, conventional means alone cannot prevent the excessive drop in chilled water temperature. There was a problem that I couldn't get it.
(ハ) 発明の目的
本発明は、複数台の負荷側熱交換器が並設され
ている吸収冷凍機において、負荷の急激な減少時
にも冷水温度の過度の低下を防止し得る制御装置
の提供を目的としたものである。(c) Purpose of the Invention The present invention provides a control device that can prevent an excessive drop in chilled water temperature even when the load suddenly decreases in an absorption chiller in which a plurality of load-side heat exchangers are installed in parallel. The purpose is to
(ニ) 発明の構成
本発明は、負荷側熱交換器の発停信号により負
荷側熱交換器の運転台数に応じて発生器の熱源制
御弁の最大開度を優先的に調整し、かつ、吸収冷
凍機の冷水出口温度を感知する検出器の信号で熱
源制御弁の開度を調節する構成としたものであ
る。(d) Structure of the invention The present invention preferentially adjusts the maximum opening degree of the heat source control valve of the generator according to the number of operating load-side heat exchangers based on the start/stop signal of the load-side heat exchangers, and The opening of the heat source control valve is adjusted based on a signal from a detector that detects the temperature of the cold water outlet of the absorption refrigerator.
本発明によれば、例えば負荷側熱交換器の運転
台数が半減して負荷が急に半減した時、優先的に
熱源制御弁の最大開度が50％に調整される。すな
わち、負荷が急に半減した際、半分の負荷に対し
て吸収冷凍機の入熱も直ちに半分に調節される。 According to the present invention, for example, when the number of load-side heat exchangers in operation is halved and the load is suddenly halved, the maximum opening degree of the heat source control valve is preferentially adjusted to 50%. That is, when the load is suddenly halved, the heat input to the absorption refrigerator is immediately halved for the halved load.
それ故、本発明によれば、負荷が急に減少した
時にも負荷に対する吸収冷凍機の入熱が過剰とな
るのを防ぐことができ、冷水温度の過度の低下を
防止することができる。 Therefore, according to the present invention, even when the load suddenly decreases, it is possible to prevent excessive heat input to the absorption chiller relative to the load, and it is possible to prevent the chilled water temperature from decreasing excessively.
(ホ) 実施例
第１図は、本発明制御装置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は発生
器、２は凝縮器、３は蒸発器、４は吸収器、５は
溶液熱交換器で、これらは冷媒蒸気を導く管６、
冷媒液が流下する管７、冷媒液を再循環させるポ
ンプ８付きの管９、溶液ポンプ１０付きの管１
１、溶液が流下する管１２で接続されて冷媒と吸
収液との循環による吸収冷凍サイクルを構成して
いる。(E) Embodiment FIG. 1 is a schematic structural explanatory diagram showing an embodiment of the control device of the present invention. In FIG. 1, 1 is a generator, 2 is a condenser, 3 is an evaporator, 4 is an absorber, 5 is a solution heat exchanger, these are pipes 6 for guiding refrigerant vapor,
A pipe 7 through which the refrigerant liquid flows, a pipe 9 with a pump 8 for recirculating the refrigerant liquid, a pipe 1 with a solution pump 10
1. They are connected by a pipe 12 through which the solution flows to form an absorption refrigeration cycle by circulating refrigerant and absorption liquid.
１３は蒸発器３に内蔵された冷水器、１４は発
生器１に内蔵された加熱器、１５および１６は吸
収器４および凝縮器２に内蔵された冷却器であ
る。 13 is a water cooler built into the evaporator 3; 14 is a heater built into the generator 1; and 15 and 16 are coolers built into the absorber 4 and the condenser 2.
１７，１８，１９はそれぞれ第１、第２、第３
負荷側熱交換器である。 17, 18, and 19 are the first, second, and third, respectively.
This is a load side heat exchanger.
２０，２１はそれぞれ第１、第２冷水ヘツダー
である。２２は冷水器１３と第１、第２冷水ヘツ
ダー２０，２１とを接続した冷水ポンプ２３付き
の冷水母管、２４，２５，２６は第１、第２冷水
ヘツダー２０，２１と第１、第２、第３負荷側熱
交換器１７，１８，１９のそれぞれとを並列関係
に接続した第１、第２、第３冷水管、２７はボイ
ラーその他の熱源設備（図示せず）と加熱器１４
とを接続した熱源制御弁Ｖ付きの熱源管であり、
２８は冷却水管である。Ｓは冷水の冷水器１３出
口側の温度すなわち蒸発器３から取り出される冷
水の温度を感知する温度検出器で、この温度検出
器の信号は温度調節器C1に発信される。C2はコ
ンピユータを内蔵した制御器で、この制御器は温
度調節器C1の信号および第１、第２、第３負荷
側熱交換器１７，１８，１９の発停信号〔例え
ば、負荷側熱交換器に内蔵されている送風機（図
示せず）の発停信号〕を受け、これら信号を演算
処理して熱源制御弁Ｖに制御信号を発信する。 20 and 21 are first and second cold water headers, respectively. 22 is a cold water main pipe with a cold water pump 23 connecting the water cooler 13 and the first and second cold water headers 20 and 21; 24, 25 and 26 are the first and second cold water headers 20 and 21 and the first and second cold water headers 20 and 21; 2. The first, second, and third cold water pipes are connected in parallel with each of the third load-side heat exchangers 17, 18, and 19; 27 is a boiler or other heat source equipment (not shown) and a heater 14;
A heat source tube with a heat source control valve V connected to the
28 is a cooling water pipe. S is a temperature detector that senses the temperature on the outlet side of the cold water cooler 13, that is, the temperature of the cold water taken out from the evaporator 3, and a signal from this temperature detector is transmitted to the temperature controller C1 . C 2 is a controller with a built-in computer, and this controller controls the signal of the temperature controller C 1 and the on/off signals of the first, second, and third load-side heat exchangers 17, 18, and 19 [for example, the load-side It receives start/stop signals for a blower (not shown) built into the heat exchanger, processes these signals, and sends a control signal to the heat source control valve V.
次に、このように構成された本発明制御装置の
動作を説明する。ここにおいて、制御装置の動作
の説明を簡略にするため、第１負荷側熱交換器１
７の熱交換器の定格能力を10冷凍トン、第２負荷
熱交換器１８のそれを20冷凍トン、第３負荷側熱
交換器１９のそれを30冷凍トンおよび吸収冷凍機
の定格冷凍能力を60冷凍トンとする。 Next, the operation of the control device of the present invention configured as described above will be explained. Here, in order to simplify the explanation of the operation of the control device, the first load side heat exchanger 1
The rated capacity of heat exchanger No. 7 is 10 refrigeration tons, that of second load heat exchanger 18 is 20 refrigeration tons, that of third load heat exchanger 19 is 30 refrigeration tons, and the rated refrigeration capacity of the absorption chiller is 60 frozen tons.
(A) 全部の負荷側熱交換器が運転されている場合
この場合には、制御器C2は、第１、第２、第
３負荷側熱交換器１７，１８，１９からの運転信
号を受け、この信号量が定格値であることを判定
言い代えれば60冷凍トンに相当する信号量である
ことを判定し、熱源制御弁Ｖの最大開度を100％
に設定する。かつ、制御器C2は、温度調節器C1
を介して温度検出器Ｓからの信号を受け、負荷の
増減を検知しつつ熱源制御弁Ｖに制御信号を発信
する。そして、熱源制御弁Ｖの開度が第２図に示
すように、調節される。第２図において、縦軸は
開度〔％〕、横軸は負荷〔％〕を表わしている。(A) When all load-side heat exchangers are operating In this case, the controller C 2 receives operation signals from the first, second, and third load-side heat exchangers 17, 18, and 19. In other words, it is determined that the signal amount is equivalent to 60 tons of refrigeration, and the maximum opening of the heat source control valve V is set to 100%.
Set to . And controller C 2 is temperature regulator C 1
It receives a signal from the temperature detector S via the temperature detector S, and sends a control signal to the heat source control valve V while detecting an increase or decrease in load. Then, the opening degree of the heat source control valve V is adjusted as shown in FIG. In FIG. 2, the vertical axis represents the opening degree [%], and the horizontal axis represents the load [%].
なお、第２図から分かるように、負荷側熱交換
器がすべて運転されている場合の制御動作は、従
来の制御装置における動作と実質的には同様にな
る。 As can be seen from FIG. 2, the control operation when all the load-side heat exchangers are in operation is substantially the same as the operation in the conventional control device.
(B) 一部の負荷側熱交換器が停止された場合
この場合において、例えば第３負荷側熱交換器
１９が停止されたものとして説明する。(B) Case where some of the load-side heat exchangers are stopped In this case, the description will be made assuming that, for example, the third load-side heat exchanger 19 is stopped.
この場合には、制御器C2は、第１、第２負荷
側熱交換器１７，１８からの運転信号を受けると
共に第３負荷側熱交換器１９からの停止信号を受
け、その信号量が定格値の半分であることを判定
言い代えれば30冷凍トンに相当する信号量である
ことを判定し、熱源制御弁Ｖの最大開度を50％に
設定する。そして、熱源制御弁Ｖは、制御器C2
の制御信号によつて第３負荷側熱交換器１９の停
止と同時に全開から半開にセツトされる。かつ、
制御器C2は、温度調節器C1を介して温度検出器
Ｓからの信号を受け、負荷の増減を検知しつつ熱
源制御弁Ｖに制御信号を発信する。そして、熱源
制御弁Ｖの開度が、第３図に示すように、調節さ
れる。第３図において、縦軸は開度〔％〕、横軸
は負荷〔％〕を表わしている。 In this case, the controller C 2 receives operation signals from the first and second load-side heat exchangers 17 and 18 as well as a stop signal from the third load-side heat exchanger 19, and the amount of the signal is In other words, it is determined that the signal amount is equivalent to 30 tons of refrigeration, and the maximum opening degree of the heat source control valve V is set to 50%. The heat source control valve V is controlled by the controller C 2
When the third load-side heat exchanger 19 is stopped, the third load-side heat exchanger 19 is simultaneously set from fully open to half-open by the control signal. and,
The controller C2 receives a signal from the temperature detector S via the temperature regulator C1 , and transmits a control signal to the heat source control valve V while detecting an increase or decrease in load. Then, the opening degree of the heat source control valve V is adjusted as shown in FIG. In FIG. 3, the vertical axis represents the opening [%], and the horizontal axis represents the load [%].
このように、第３負荷側熱交換器１９が停止さ
れて負荷が急に半減した場合には熱源制御弁Ｖが
直ちに全開から半開へセツトされて発生器１の加
熱量も直ちに半分に調整されるので、負荷に対し
て吸収冷凍機の冷凍能力が過大となることはな
い。 In this way, when the third load-side heat exchanger 19 is stopped and the load is suddenly halved, the heat source control valve V is immediately set from fully open to half open, and the heating amount of the generator 1 is immediately adjusted to half. Therefore, the refrigerating capacity of the absorption chiller does not become excessive compared to the load.
すなわち、例えば第３負荷側熱交換器１９の設
置されている会議室（図示せず）での会議が終了
し、この熱交換器の運転が停止されても、第１、
第２負荷側熱交換器１７，１８がそれぞれ設置さ
れている事務室（図示せず）の一時的な冷え過ぎ
を防止できるのである。 That is, for example, even if a meeting in a conference room (not shown) in which the third load-side heat exchanger 19 is installed ends and the operation of this heat exchanger is stopped, the first,
This can prevent the office rooms (not shown) in which the second load-side heat exchangers 17 and 18 are installed from becoming temporarily too cold.
また、気温の低下に伴なつて事務室の室温が
徐々に低下すなわち事務室の冷房負荷が徐々に減
少すると、吸収冷凍機の冷水出口温度も低下し始
めるので、温度検出器Ｓの信号により熱源制御弁
Ｖが閉方向に制御されて冷房負荷に見合う冷水が
第１、第２負荷側熱交換器１７，１８に供給され
るのである。 In addition, when the room temperature in the office gradually decreases as the temperature decreases, that is, the cooling load in the office gradually decreases, the temperature at the chilled water outlet of the absorption chiller also begins to decrease, so the signal from the temperature detector S detects the heat source. The control valve V is controlled in the closing direction, and cold water corresponding to the cooling load is supplied to the first and second load-side heat exchangers 17 and 18.
第４図は本発明制御装置の他の実施例を示した
図で、第１図と同様の構成機器には同一の図番を
付している。第４図において、２９は蓄熱槽であ
り、P1，P2，P3はそれぞれ第１、第２、第３冷
水管２４′，２５′，２６′に備えた第１、第２、
第３冷水ポンプである。第４図においては、制御
器C2は、第１、第２、第３冷水ポンプP1，P2，
P3の発停信号を受け、これら冷水ポンプの運転
台数に応じて熱源制御弁Ｖの最大開度をセツトす
るようにしている。 FIG. 4 is a diagram showing another embodiment of the control device of the present invention, in which components similar to those in FIG. 1 are given the same figure numbers. In FIG. 4, 29 is a heat storage tank, and P 1 , P 2 , P 3 are first, second, and
This is the third cold water pump. In FIG. 4, the controller C 2 controls the first, second, and third cold water pumps P 1 , P 2 ,
Upon receiving the start/stop signal of P3 , the maximum opening degree of the heat source control valve V is set according to the number of operating cold water pumps.
(ヘ) 発明の効果
以上のように、本発明制御装置は、負荷側熱交
換器の運転台数が減つて負荷が急減した時、負荷
側熱交換器の運転台数に応じて熱源制御弁の最大
開度をセツトするようにしたものであるから、負
荷に対する吸収冷凍機の入熱が過剰となるのを防
止でき、冷水温度の過度の低下を防ぐことができ
る。かつ、蒸発器から取り出される冷水の温度を
感知しつつ熱源制御弁の開度を調節するようにし
たものであるから、負荷に見合う冷水も得られ
る。(f) Effects of the Invention As described above, the control device of the present invention is capable of controlling the heat source control valve to the maximum level according to the number of load-side heat exchangers in operation when the load suddenly decreases due to a decrease in the number of load-side heat exchangers in operation. Since the opening degree is set, it is possible to prevent excessive heat input to the absorption refrigerator relative to the load, and to prevent an excessive drop in the temperature of the chilled water. In addition, since the opening degree of the heat source control valve is adjusted while sensing the temperature of the cold water taken out from the evaporator, cold water suitable for the load can be obtained.
第１図は本発明制御装置の一実施例を示す概略
構成説明図、第２図及び第３図は本発明制御装置
における熱源制御弁の動作の一例を示す説明図、
第４図は本発明制御装置の他の実施例を示す概略
構成説明図である。
１…発生器、３…蒸発器、１７，１８，１９…
第１、第２、第３負荷側熱交換器、C1…温度調
節器、C2…制御器、P1，P2，P3…第１、第２、
第３冷水ポンプ、Ｓ…温度検出器、…熱源制御
弁。
FIG. 1 is a schematic configuration explanatory diagram showing one embodiment of the control device of the present invention, FIGS. 2 and 3 are explanatory diagrams showing an example of the operation of the heat source control valve in the control device of the present invention,
FIG. 4 is a schematic structural explanatory diagram showing another embodiment of the control device of the present invention. 1... Generator, 3... Evaporator, 17, 18, 19...
1st, 2nd, 3rd load side heat exchanger, C 1 ... Temperature regulator, C 2 ... Controller, P 1 , P 2 , P 3 ... 1st, 2nd,
Third cold water pump, S...temperature detector,...heat source control valve.
Claims (1)
収冷凍機において、蒸発器から取り出される冷水
の温度を感知する温度検出器の信号により発生器
の熱源制御弁の開度を調節し、かつ、負荷側熱交
換器の発停信号により負荷側熱交換器の運転台数
に応じて熱源制御弁の最大開度を調整するように
したことを特徴とする吸収冷凍機の制御装置。1. In an absorption refrigerator in which multiple load-side heat exchangers are installed in parallel, the opening degree of the heat source control valve of the generator is adjusted based on the signal from the temperature detector that senses the temperature of the cold water taken out from the evaporator, A control device for an absorption chiller, characterized in that the maximum opening degree of the heat source control valve is adjusted according to the number of operating load-side heat exchangers based on the start/stop signal of the load-side heat exchangers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14355583A JPS6033464A (en) | 1983-08-04 | 1983-08-04 | Controller for absorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14355583A JPS6033464A (en) | 1983-08-04 | 1983-08-04 | Controller for absorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6033464A JPS6033464A (en) | 1985-02-20 |
| JPH0427467B2 true JPH0427467B2 (en) | 1992-05-11 |
Family
ID=15341460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14355583A Granted JPS6033464A (en) | 1983-08-04 | 1983-08-04 | Controller for absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6033464A (en) |
-
1983
- 1983-08-04 JP JP14355583A patent/JPS6033464A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6033464A (en) | 1985-02-20 |
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