JPH03137461A - Control device for regenerator - Google Patents
Control device for regeneratorInfo
- Publication number
- JPH03137461A JPH03137461A JP27533589A JP27533589A JPH03137461A JP H03137461 A JPH03137461 A JP H03137461A JP 27533589 A JP27533589 A JP 27533589A JP 27533589 A JP27533589 A JP 27533589A JP H03137461 A JPH03137461 A JP H03137461A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- hot water
- regenerator
- cold water
- way valve
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 190
- 238000010521 absorption reaction Methods 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 230000008929 regeneration Effects 0.000 claims 1
- 238000011069 regeneration method Methods 0.000 claims 1
- 239000000498 cooling water Substances 0.000 abstract description 7
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 19
- 239000003507 refrigerant Substances 0.000 description 18
- 230000007423 decrease Effects 0.000 description 15
- 239000006096 absorbing agent Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/04—Arrangement or mounting of control or safety devices for sorption type machines, plants or systems
- F25B49/043—Operating continuously
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2333/00—Details of boilers; Analysers; Rectifiers
- F25B2333/007—Details of boilers; Analysers; Rectifiers the generator or boiler heated by heat exchangers with steam or hot water as heating fluid or by a secondary boiling-condensing heater
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
Description
【発明の詳細な説明】
（り産業上の利用分野
本発明は温水などを加熱源とする再生器の制御装置に関
する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a control device for a regenerator using hot water or the like as a heating source.
（ロ）従来の技術
又、例えば特開昭６３−６１８４７号公報には、発生器
の加熱器と温水供給源とを結んだ温水回路に加熱器をバ
イパスする温水流路を三方弁を介して設け、加熱器から
の戻り温水の温度により上記三方弁の開度を制御するコ
ントローラーを備えた吸収冷凍機が開示されている。そ
して、上記吸収冷凍機では加熱器からの温水の戻り温度
が低いときにはコントローラーが動作して三方弁の開度
が変化し、温水流路を流れる温水の量が増加し、加熱器
を流れる温水の量が減少する。(b) Conventional technology, for example, Japanese Patent Application Laid-Open No. 63-61847 discloses that a hot water flow path bypassing the heater is provided in a hot water circuit connecting a generator heater and a hot water supply source via a three-way valve. An absorption refrigerator is disclosed, which includes a controller that controls the opening degree of the three-way valve according to the temperature of hot water returned from the heater. In the above-mentioned absorption chiller, when the return temperature of hot water from the heater is low, the controller operates to change the opening degree of the three-way valve, increasing the amount of hot water flowing through the hot water flow path, and increasing the amount of hot water flowing through the heater. quantity decreases.
（ハ）発明が解決しようとする課題
上記従来の技術において、温水供給源からの温水の温度
が高く、吸収冷凍機から構成される装置出口温度が下っ
た場合にも、三方弁の開度が温水の戻り温度により制御
されているため、吸収冷凍機から供給される冷水温度が
下がり過ぎることがあり、冷水を安定して供給すること
がむずかしかった。(c) Problems to be Solved by the Invention In the above-mentioned conventional technology, even when the temperature of hot water from the hot water supply source is high and the temperature at the outlet of the device consisting of an absorption chiller drops, the opening degree of the three-way valve is Since it is controlled by the return temperature of hot water, the temperature of the cold water supplied from the absorption chiller may drop too much, making it difficult to stably supply cold water.
本発明は冷水出口温度の下がり過ぎを防止すると共に、
冷水の供給を安定させることを目的とする。The present invention prevents the cold water outlet temperature from dropping too much, and
The purpose is to stabilize the supply of cold water.
（ニ）課題を解決するための手段
本発明は上記課題を解決するために、再生器（１）から
の温水（加熱源）の戻り温度を検出する第３温度検出器
（２５）からの信号、及び冷水出口温度を検出する第１
温度検出器＜２３）からの信号を入力して三方弁（２２
）へ開度信号を出力する温度調節装置（２２）を備え、
第２温度検出器（２４）が検出した冷水出口温度が設定
値より高いときには、制御切替器（２６）が温水接点に
閉じ、温水の戻り温度により三方弁（２２）の開度を調
節し、設定値以下のときには制御切替器（２６）が冷水
接点に閉じ、冷水出口温度により、三方弁（２２）の開
度を制御する再生器の制御装置を提供するものである。(d) Means for Solving the Problems In order to solve the above problems, the present invention provides a signal from a third temperature detector (25) that detects the return temperature of hot water (heating source) from the regenerator (1). , and a first detecting the cold water outlet temperature.
Input the signal from the temperature sensor <23) and open the three-way valve (22
) includes a temperature control device (22) that outputs an opening signal to
When the cold water outlet temperature detected by the second temperature detector (24) is higher than the set value, the control switch (26) closes the hot water contact and adjusts the opening degree of the three-way valve (22) according to the hot water return temperature; When the temperature is below a set value, the control switch (26) closes the cold water contact and provides a regenerator control device that controls the opening degree of the three-way valve (22) according to the cold water outlet temperature.
又、温水戻り管（２１Ｂ）に設けられた三方弁（２２）
の開度を再生器（１）からの温水の戻り温度で制御しつ
つ、第２温度検出器〈２４）で冷水出口温度を検出し、
この冷水出口温度が設定値に達したときには、三方弁（
２２）の制御を第１温度検出器（２３）で検出した冷水
出口温度による制御に切替える再生器の制御装置を提供
するものである。Also, a three-way valve (22) installed in the hot water return pipe (21B)
While controlling the opening degree of the regenerator (1) with the return temperature of the hot water from the regenerator (1), detecting the cold water outlet temperature with the second temperature detector (24),
When this cold water outlet temperature reaches the set value, the three-way valve (
22) is switched to control based on the cold water outlet temperature detected by the first temperature detector (23).
（＊）作用
吸収冷凍機の例えば起動時、冷水出口温度が設定値より
高いときには、第３温度検出器（２５）が検出した温水
戻り温度により温度調節装置（２２）が三方弁（２２）
へ開度信号を出力し、温水戻り温度が低いときには温水
が全てバイパス配管（２１Ｃ）に流れ、温水の再生器（
１〉での放熱がなく、温水戻り温度が上昇してきたとき
には再生器（１）へ温水が流れ、温水の流量が次第に増
加する。このため、例えばエンジンの冷却水などの温水
の温度を短時間で上昇させることが可能になり、吸収冷
凍機の立ち上り特性を良くすることが可能になる。又、
冷水出口温度が低下して設定値以下になったときには、
制御切替器（２６）が動作して三方弁（２２）の開度の
制御が、温水戻り温度による制御から冷水出口温度によ
る制御に切替えられ、冷水出口温度の低下に伴い再生器
（１）へ送られる温水の量が減少し、再生器（１）での
吸収液の加熱量が減少して冷媒蒸気の発生量が減少する
。このため、冷水出口温度が下がり過ぎることを防止し
て、冷水を安定して供給することが可能になる。(*) Effect When the absorption chiller is started, for example, when the cold water outlet temperature is higher than the set value, the temperature control device (22) is activated by the three-way valve (22) according to the hot water return temperature detected by the third temperature detector (25).
When the hot water return temperature is low, all the hot water flows to the bypass pipe (21C) and the hot water regenerator (
When there is no heat dissipation in step 1> and the hot water return temperature rises, hot water flows to the regenerator (1) and the flow rate of hot water gradually increases. Therefore, it becomes possible to raise the temperature of hot water such as engine cooling water in a short time, and it becomes possible to improve the start-up characteristics of the absorption refrigerator. or,
When the cold water outlet temperature drops below the set value,
The control switch (26) operates and the control of the opening degree of the three-way valve (22) is switched from control based on the hot water return temperature to control based on the cold water outlet temperature, and as the cold water outlet temperature decreases, the opening degree of the three-way valve (22) is switched to the regenerator (1) as the cold water outlet temperature decreases. The amount of hot water sent decreases, the amount of heating of the absorption liquid in the regenerator (1) decreases, and the amount of refrigerant vapor generated decreases. Therefore, it is possible to prevent the cold water outlet temperature from dropping too much and to stably supply cold water.
又、吸収冷凍機の起動時などに冷水出口温度が設定値よ
り高いときには、三方弁（２２）の開度を再生器（１）
からの温水の戻り温度で制御し、温水の温度が低い場合
には、再生器（１）へ温水が流れず、温水の戻り温度の
上昇に伴い再生器（１）へ流れる温水の量が増加する。In addition, when the chilled water outlet temperature is higher than the set value, such as when starting up the absorption chiller, the opening of the three-way valve (22) is changed to the regenerator (1).
When the hot water temperature is low, hot water does not flow to the regenerator (1), and as the hot water return temperature rises, the amount of hot water flowing to the regenerator (1) increases. do.
このため、温水の温度を短時間で上昇させることが可能
になり、吸収冷凍機の立ち上り特性を良くすることが可
能になる。又、冷水出口温度が設定値以下になった場合
には三方弁（２２）の制御が第１温度検出器（２３）で
検出した冷水出口温度による制御に切替えられ、冷水出
口温度の低下に伴い、三方弁（２２）の再生器（１）側
の開度が絞られ、再生器（１）へ送られる温水の量が減
少し、再生器（１）での吸収液加熱量が減少して冷媒蒸
気の発生量が減少する。このため、冷水出口温度が下が
り過ぎることを防止して、冷水を安定して供給すること
が可能になる。Therefore, it becomes possible to raise the temperature of hot water in a short time, and it becomes possible to improve the start-up characteristics of the absorption refrigerator. In addition, when the chilled water outlet temperature falls below the set value, the control of the three-way valve (22) is switched to control based on the chilled water outlet temperature detected by the first temperature detector (23), and as the chilled water outlet temperature decreases, , the opening degree of the three-way valve (22) on the regenerator (1) side is reduced, the amount of hot water sent to the regenerator (1) is reduced, and the amount of heating of the absorption liquid in the regenerator (1) is reduced. The amount of refrigerant vapor generated is reduced. Therefore, it is possible to prevent the cold water outlet temperature from dropping too much and to stably supply cold water.
〈へ）実施例
以下、本発明の一実施例を図面に基づいて詳細に説明す
る。(To) Example An example of the present invention will be described in detail below with reference to the drawings.
図面は温水駆動式の一重効用吸収冷凍機であり、吸収液
（溶液）に臭化リチウム（ＬｉＢｒ）溶液を使用し、冷
媒に水を使用している。The figure shows a hot water-driven single-effect absorption refrigerator, which uses a lithium bromide (LiBr) solution as the absorption liquid (solution) and water as the refrigerant.
（１）は再生器、（２）は凝縮器、（３）は蒸発器、（
４）は吸収器、（５）は熱交換器であり、それぞれは吸
収液配管（６） 、 （７） 、 （８）、及び冷媒配
管（９） 、 （１０）により配管接続されている。そ
して、吸収液配管（６）、及び冷媒配管（１０）にはそ
れぞれ吸収液ポンプ（１１）、及び冷媒ポンプ（１２）
が設けられている。(1) is a regenerator, (2) is a condenser, (3) is an evaporator, (
4) is an absorber, and (5) is a heat exchanger, each of which is connected by absorption liquid piping (6), (7), (8) and refrigerant piping (9), (10). The absorption liquid pipe (6) and the refrigerant pipe (10) are equipped with an absorption liquid pump (11) and a refrigerant pump (12), respectively.
is provided.
又、（１３）は蒸発器熱交換器（１４）に配管接続され
た冷水配管、（１５）は吸収器熱交換器（１６）、及び
凝縮器熱交換器（１７）に配管接続された冷却水配管で
ある。この冷却水配管り１５）は例えば冷却塔（図示せ
ず）に接続され冷却水循環路が形成され、さらに、（２
１Ａ）は例えばエンジンのジャケット（図示せず）の出
口側と再生器〈１）の加熱器（ＩＡ）入口側との間に配
管接続きれたエンジン冷却水（以下温水という）の流れ
る温水往き管、（２１Ｂ）はエンジンのジャケット入口
側と加熱器（ＩＡ）出口側との間に配管接続された温水
戻り管である。又、（２１Ｃ）は温水往き管（２１Ａ）
と温水戻り管（２１Ｂ）との間に温水三方弁（制御弁）
（２２）を介して接続されたバイパス配管であり、温水
往き管（２１Ａ）、温水戻り管（２１Ｂ）により温水（
加熱Ｒ）供給配管が形成される。Also, (13) is a cold water pipe connected to the evaporator heat exchanger (14), and (15) is a cooling water pipe connected to the absorber heat exchanger (16) and the condenser heat exchanger (17). This is water piping. This cooling water piping 15) is connected to, for example, a cooling tower (not shown) to form a cooling water circulation path, and furthermore, (2
1A) is, for example, a hot water pipe through which engine cooling water (hereinafter referred to as hot water) flows, which is connected between the outlet side of the engine jacket (not shown) and the inlet side of the heater (IA) of the regenerator (1). , (21B) is a hot water return pipe connected between the engine jacket inlet side and the heater (IA) outlet side. Also, (21C) is the hot water pipe (21A)
A hot water three-way valve (control valve) between the and hot water return pipe (21B)
It is a bypass pipe connected via (22), and hot water (
Heating R) Supply piping is formed.
＜２３） 、 （２４）はそれぞれ蒸発器熱交換器〈１
４）の出口側冷水配管（１５）に設けられた三方弁制御
用冷水出口温度検出器（以下第１温度検出器という）、
制御切替用冷水出口温度検出器（以下第２温度検出器と
いう）である。又、（２５）は温水三方弁出口側の温水
戻り管（２１Ｂ）に設けられた三方弁制御用温水の戻り
温度検出器（以下第３温度検出器という）である、さら
に、（２６）は制御切替器であり、この制御切替器（２
６）には冷水出口温度接点（以下第１接点という） （
２７）、温水出口温度接点（以下第２接点という）（２
８）、及び切替接片（２９）が設けられている。そして
、第１接点（２７）が第１温度検出器（２３）に接続さ
れ、第２接点（２８）が第３温度検出器（２５）に接続
されている。又、制御切替器（２６）は第２温度検出器
（２４）に接続きれ、第２温度検出器（２４）から信号
を入力し、冷水出口温度に応じて切替接片（２９）が切
替わる。又、（３０）は温度調節器であり、この温度調
節器（３０）は制御切替器（２６）、及び温水三方弁（
２２）に接続されている。そして、温度調節器（３０）
は制御切替器（２６）から信号を入力して、冷水出口温
度、或いは温水戻り温度に応じて開度信号を温水三方弁
＜２２）へ出力する。<23) and (24) are the evaporator heat exchanger <1
4) a cold water outlet temperature detector for controlling a three-way valve (hereinafter referred to as the first temperature detector) provided in the outlet side cold water pipe (15);
This is a control switching cold water outlet temperature detector (hereinafter referred to as a second temperature detector). Further, (25) is a hot water return temperature detector (hereinafter referred to as the third temperature detector) for controlling the three-way valve provided in the hot water return pipe (21B) on the hot water three-way valve outlet side.Furthermore, (26) is It is a control switch, and this control switch (2
6) has a cold water outlet temperature contact (hereinafter referred to as the first contact) (
27), hot water outlet temperature contact (hereinafter referred to as the second contact) (2
8), and a switching contact piece (29). The first contact (27) is connected to the first temperature detector (23), and the second contact (28) is connected to the third temperature detector (25). Further, the control switch (26) can be connected to the second temperature detector (24), inputs a signal from the second temperature detector (24), and switches the switch piece (29) according to the cold water outlet temperature. . Further, (30) is a temperature regulator, and this temperature regulator (30) is connected to a control switch (26) and a hot water three-way valve (
22). And a temperature controller (30)
inputs a signal from the control switch (26) and outputs an opening signal to the hot water three-way valve <22) according to the cold water outlet temperature or hot water return temperature.
上記のように構成された吸収冷凍機の運転時、吸収液ポ
ンプ（１１）から吐出した稀吸収液は熱交換器（５）を
介して再生器（１）へ送られ、加熱器（ＩＡ〉にて加熱
され、冷媒が稀吸収液から分離する。そして冷媒が分離
して濃度が高くなった吸収液が吸収液配管（７） 、
（８）、及び熱交換器（５）を介して吸収器（４）へ送
られ散布される。又、再生器（１）で発生した冷媒蒸気
は凝縮器（２）へ流れ凝縮し、液冷媒が凝縮器（２）か
ら蒸発器（３）へ流れる。そして、冷媒ポンプ（１２）
の運転により液冷媒が蒸発器熱交換器（１４）に散布さ
れ、冷水と熱交換して蒸発する。During operation of the absorption refrigerator configured as described above, the diluted absorption liquid discharged from the absorption liquid pump (11) is sent to the regenerator (1) via the heat exchanger (5), and the dilute absorption liquid is sent to the regenerator (1) via the heat exchanger (5). The refrigerant is separated from the diluted absorption liquid.Then, the refrigerant is separated and the concentrated absorption liquid is transferred to the absorption liquid piping (7),
(8), and is sent to the absorber (4) via the heat exchanger (5) and distributed. Further, the refrigerant vapor generated in the regenerator (1) flows to the condenser (2) and is condensed, and the liquid refrigerant flows from the condenser (2) to the evaporator (3). And the refrigerant pump (12)
By this operation, the liquid refrigerant is spread to the evaporator heat exchanger (14), exchanges heat with the cold water, and evaporates.
このため、温度が低下した冷水が蒸発器熱交換器（１４
）から流出し、冷水配管（１３）を介して負荷（図示せ
ず）へ供給される。又、蒸発器（３）にて蒸発した冷媒
蒸気は吸収器（４）へ流れ散布きれた吸収液に吸収され
る。Therefore, the cold water whose temperature has decreased is transferred to the evaporator heat exchanger (14
) and is supplied to a load (not shown) via a cold water pipe (13). Further, the refrigerant vapor evaporated in the evaporator (3) flows to the absorber (4) and is absorbed by the dispersed absorption liquid.
以上のように吸収冷凍機が運転されているとき、第２温
度検出器（２４）が検出した冷水出口温度が制御切替温
度（例えば６°Ｃ）以下の場合には、第２温度検出器〈
２４）から信号を入力した制御切替器（２６）が動作し
、切替接片（２９）が第１接点（２７）に閉じている。When the absorption chiller is operated as described above, if the chilled water outlet temperature detected by the second temperature detector (24) is lower than the control switching temperature (for example, 6°C), the second temperature detector (24)
The control switch (26) receives a signal from the switch (24) and operates, and the switching contact (29) closes to the first contact (27).
そして、冷水出口温度に応じて温度調節器（３０）が動
作して温水三方弁（２２）へ開度信号を出力する。ここ
で、冷水出口温度が設定値より高いときには温水三方弁
（２２）の加熱器（ＩＡ）側の開度が大きくなり、バイ
パス配管（２１Ｃ）側の開度が小さくなる。このため、
加熱器（ＩＡ）を流れる温水の量が増加し、冷媒蒸気の
発生量が増える。そして、凝縮器（２）から蒸発器（３
）へ流れる液冷媒の量が増加し、蒸発器（３）での液冷
媒の散布量が増える。液冷媒散布量の増加により、冷水
出口温度が低下し、設定値以下になると、温度調節器（
３０）が出力する開度信号が変化し、温水三方弁〈２２
）の加熱器（ＩＡ）側の開度が減少し、バイパス配管（
２１Ｃ）側の開度が増加する。このため、加熱器（ＩＡ
）を流れる温水の量が減少し、冷水出口温度が上昇する
。Then, the temperature regulator (30) operates according to the cold water outlet temperature and outputs an opening signal to the hot water three-way valve (22). Here, when the cold water outlet temperature is higher than the set value, the opening degree on the heater (IA) side of the hot water three-way valve (22) increases, and the opening degree on the bypass piping (21C) side decreases. For this reason,
The amount of hot water flowing through the heater (IA) increases, and the amount of refrigerant vapor generated increases. Then, from the condenser (2) to the evaporator (3)
) increases, and the amount of liquid refrigerant sprayed in the evaporator (3) increases. Due to the increase in the amount of liquid refrigerant sprayed, the chilled water outlet temperature decreases and when it becomes below the set value, the temperature controller (
The opening signal output by 30) changes, and the hot water three-way valve 〈22
) decreases in opening on the heater (IA) side, bypass piping (
21C) side opening degree increases. For this reason, the heater (IA
) decreases, and the cold water outlet temperature increases.
又、例えば、吸収冷凍機の起動時、第２温度検出器〈２
４）が検出した冷水出口温度が制御切替温度より高い場
合には、第２温度検出器〈２４）から信号を入力した制
御切替器（２６）の切替接片（２９）が第２接点（２８
）に閉じる。そして、エンジンの運転が始まってからの
時間が短いため、第３温度検出器（２５）が検出した温
水戻り温度が設定温度（例えば８０°Ｃ）より低い場合
には、制御切替器（２６）を介して第３温度検出器（２
５）から信号を入力した温度調節器（３０）が動作し、
温水三方弁（２２）へ温度信号を出力する。温水三方弁
（２２）は開度信号を入力して動作し、加熱器（ＩＡ）
側の開度がゼロになり、バイパス配管（２１）側の開度
が最大になり、温水は全て加熱器〈ＩＡ）をバイパスす
る。その後、時間の経過に伴い温水往き管（２１Ａ）、
バイパス配管（２１Ｃ）、及び温水戻り管（２１Ｂ＞を
流れる温水の温度（温水戻り温度）が上昇し、８０°Ｃ
以上になると、第３温度検出器（２５）からの信号を制
御切替器（２６）を介して入力した温度調節器（３０）
が動作する。そして、温度調節器（３０）が出力する開
度信号が変化し、温水三方弁（２２）の加熱器（ＩＡ）
側が開き、温水が加熱器（ＩＡ）に流れる。ここで、温
水三方、弁（２２〉の加熱器（ＩＡ）側の開度は第２図
に示したように温水戻り温度の上昇に比例して大きくな
り、温水戻り温度が例えば８２℃になると最大になる。Also, for example, when starting up the absorption refrigerator, the second temperature detector <2
When the chilled water outlet temperature detected by 4) is higher than the control switching temperature, the switching contact (29) of the control switching device (26) that receives the signal from the second temperature detector (24) switches to the second contact (28).
) to close. Since it has been a short time since the engine started operating, if the hot water return temperature detected by the third temperature detector (25) is lower than the set temperature (e.g. 80°C), the control switch (26) through the third temperature sensor (2
The temperature controller (30) that receives the signal from 5) operates,
A temperature signal is output to the hot water three-way valve (22). The hot water three-way valve (22) operates by inputting the opening signal, and the heater (IA)
The opening on the side becomes zero, the opening on the bypass piping (21) side becomes maximum, and all hot water bypasses the heater (IA). After that, as time passes, the hot water pipe (21A),
The temperature of hot water (hot water return temperature) flowing through the bypass pipe (21C) and the hot water return pipe (21B>) rises to 80°C.
If the temperature exceeds the above, the temperature controller (30) receives the signal from the third temperature detector (25) via the control switch (26).
works. Then, the opening signal output by the temperature controller (30) changes, and the heater (IA) of the hot water three-way valve (22)
The side opens and hot water flows into the heater (IA). Here, the opening degree of the hot water three-way valve (22> on the heater (IA) side) increases in proportion to the rise in the hot water return temperature, as shown in Figure 2, and when the hot water return temperature reaches, for example, 82°C. become maximum.
このため、温水戻り温度の上昇に伴い再生器（１）での
放熱量が増加する。又、温水三方弁（２２）のバイパス
配管（２１Ｃ）側の開度は温水出口温度の上昇に比例し
て小さくなる。Therefore, the amount of heat dissipated by the regenerator (1) increases as the hot water return temperature increases. Further, the opening degree of the hot water three-way valve (22) on the bypass piping (21C) side decreases in proportion to the rise in the hot water outlet temperature.
上記のように加熱源である温水が設定温度以上になり加
熱器（ＩＡ）に流れると、再生器（１）にて吸収液が加
熱されて冷媒蒸気が発生する。そして、通常の吸収冷凍
機の運転時と同様に、冷媒、及び吸収液が循環し、蒸発
器（３）の蒸発器熱交換器（１４）からの冷水出口温度
は次第に低下する。その後、冷水出口温度がさらに低下
し、第２温度検出器（２４）が検出した冷水出口温度が
設定温度（例えば６°Ｃ）以下になると、第２温度検出
器（２４）から信号を入力した制御切替器（２６）が動
作し、切替接片（２９）が第２接点（２８）から第１接
点（２７）に切替わる。そして、温度調節器（３０）は
第１温度検出器〈２３）からの信号、即ち冷水出口温度
に応じて温水三方弁（２２）へ開度信号を出力する。そ
の後、冷水出口温度に応じて温水三方弁（２２）の加熱
器（ＩＡ）側、及びバイパス配管（２１Ｃ）側聞度が変
化し、冷水出口温度が略設定温度に保たれる。As mentioned above, when the hot water that is the heating source reaches a set temperature or higher and flows into the heater (IA), the absorbing liquid is heated in the regenerator (1) and refrigerant vapor is generated. Then, as in the operation of a normal absorption refrigerator, the refrigerant and absorption liquid circulate, and the temperature of the cold water outlet from the evaporator heat exchanger (14) of the evaporator (3) gradually decreases. After that, when the chilled water outlet temperature further decreases and the chilled water outlet temperature detected by the second temperature detector (24) becomes below the set temperature (for example, 6°C), a signal is input from the second temperature detector (24). The control switch (26) operates and the switching contact (29) switches from the second contact (28) to the first contact (27). The temperature regulator (30) outputs an opening signal to the hot water three-way valve (22) in accordance with the signal from the first temperature detector (23), that is, the cold water outlet temperature. Thereafter, the temperature on the heater (IA) side of the hot water three-way valve (22) and on the bypass piping (21C) side changes depending on the cold water outlet temperature, and the cold water outlet temperature is maintained at approximately the set temperature.
上記実施例によれば吸収冷凍機の起動時、冷水出口温度
が６°Ｃより高い場合には制御切替器（２６）の切替接
片（２９）が第２接点（２８）に閉じ、温水三方弁（２
２）の開度が第３温度検出器（２５）が検出する温水戻
り温度に応じて変化する。そして、温水戻り温度が低い
ときには温水が全てバイパス配管（２１Ｃ〉に流れ、加
熱器（ＩＡ）には流れないため、温水の熱が冷却水に吸
収されることを回避して、短時間で温水温度を上昇させ
ることができ、この結果、吸収冷凍機の立ち上り時間を
短縮することができる。又、温水戻り温度が設定値以上
になったときにはこの温水戻り温度で温水三方弁（２２
）の加熱器（ＬＡ）側の開度が制御され、温水戻り温度
の上昇に伴い加熱器（ＩＡ）側の開度が大きくなるため
、温水の再生器（１）での放熱量が増加し、温水戻り温
度の大幅な上昇を回避することができる。According to the above embodiment, when the absorption chiller is started, if the cold water outlet temperature is higher than 6°C, the switching contact (29) of the control switch (26) closes to the second contact (28), and the hot water Valve (2
2) changes depending on the hot water return temperature detected by the third temperature detector (25). When the hot water return temperature is low, all the hot water flows to the bypass pipe (21C) and does not flow to the heater (IA), which prevents the heat of the hot water from being absorbed by the cooling water and allows the hot water to be heated in a short time. The temperature can be increased, and as a result, the start-up time of the absorption refrigerator can be shortened.Also, when the hot water return temperature exceeds the set value, the hot water three-way valve (22
) is controlled, and as the hot water return temperature increases, the opening degree of the heater (IA) side increases, so the amount of heat dissipated by the hot water regenerator (1) increases. , a significant increase in hot water return temperature can be avoided.
又、冷水出口温度が低下して設定温度以下になると、制
御切替器（２６）が動作して切替わり、温水三方弁（２
２）の開度が冷水出口温度により制御きれるため、冷水
出口温度の下がり過ぎを肪止でき、安定して冷水を供給
することができる。尚、上記実施例において三方弁（２
２）を用いたが、三方弁（２２）の代わりに例えば温水
戻り管（２１Ｂ）、及びバイパス管（２１Ｃ）にそれぞ
れ二方弁を設け、これら二方弁の開度を温度調節器（３
０）により制御しても同様の作用効果を得ることができ
る。In addition, when the cold water outlet temperature decreases to below the set temperature, the control switch (26) operates and switches, and the hot water three-way valve (2
Since the opening degree of 2) can be fully controlled by the cold water outlet temperature, it is possible to prevent the cold water outlet temperature from dropping too much, and cold water can be stably supplied. In addition, in the above embodiment, the three-way valve (2
2), but instead of the three-way valve (22), for example, two-way valves are provided in the hot water return pipe (21B) and the bypass pipe (21C), respectively, and the opening degrees of these two-way valves are controlled by the temperature controller (3).
0), similar effects can be obtained.
（ト）発明の効果
本発明は以上のように構成された再生器の制御装置であ
り、冷水の温度が設定値より高い場合には、再生器から
の加熱源の戻り温度により制御弁の開度が制御きれ、加
熱源の戻り温度が低いときには制御弁が動作して加熱源
がバイパス配管を流れ再生器を側路するため、加熱源の
再生器での放熱をなくして加熱源の温度を短時間で上昇
させることができ、又、加熱源戻り温度の上昇に伴い制
御弁の開度が変化して再生器に流れる加熱源の量が変化
するため、加熱源の戻り温度の大幅な上昇を回避するこ
とができ、きらに、冷水温度が設定値以下の場合には冷
水温度により三方弁の開度が制御され、再生器へ流れる
加熱ｍσ量が変化し、冷水温度の下がり過ぎを回避して
冷水を安定して供給することができる。(g) Effects of the Invention The present invention is a regenerator control device configured as described above, in which when the temperature of cold water is higher than a set value, the control valve is opened by the return temperature of the heating source from the regenerator. When the temperature is out of control and the return temperature of the heating source is low, the control valve operates and the heating source flows through the bypass piping and bypasses the regenerator, eliminating heat radiation from the regenerator of the heating source and reducing the temperature of the heating source. It can be raised in a short time, and as the return temperature of the heating source changes, the opening degree of the control valve changes and the amount of the heating source flowing to the regenerator changes, resulting in a significant increase in the return temperature of the heating source. In addition, when the chilled water temperature is below the set value, the opening degree of the three-way valve is controlled depending on the chilled water temperature, and the amount of heating mσ flowing to the regenerator changes, thereby preventing the chilled water temperature from falling too low. can provide a stable supply of cold water.
又、再生器からの温水の戻り温度で温水供給配管に設け
られた三方弁の開度を制御しつつ冷水出口温度を検出し
、冷水出口温度が設定値に達したときには三方弁の制御
を冷水出口温度による制御に切替えることにより、吸収
冷凍機の起動待三方弁により再生器へ温水の循環を制御
して温水の温度を短時間で上昇させることができ、又、
起動後の冷水出口温度の下がり過ぎを回避でき、冷水を
安定して供給することができる。In addition, the cold water outlet temperature is detected while controlling the opening degree of the three-way valve installed in the hot water supply piping based on the return temperature of hot water from the regenerator, and when the cold water outlet temperature reaches the set value, the control of the three-way valve is changed to By switching to control based on the outlet temperature, the circulation of hot water to the regenerator can be controlled by the three-way valve waiting for the startup of the absorption chiller, and the temperature of the hot water can be increased in a short time.
It is possible to prevent the cold water outlet temperature from dropping too much after startup, and it is possible to stably supply cold water.
第１図及び第２図は本発明の一実施例を示し、第１図は
吸収冷凍機の回路構成図、第２図は温水の戻り温度と三
方弁の開度との関係図である。
（１〉・・・再生器、 （３）・・・蒸発器、 （２１
Ａ）・・・温水往き管（温水循環路）、 （２１Ｂ）・
・・温水戻り管（温水循環路）、 （２１Ｃ）・・・バ
イパス配管、 （２２）・・・温水三方弁、 （２３）
・・・制御用冷水出口温度検出器、 〈２４）・・・制
御切替用冷水出口温度検出器、（２５）・・・温水の戻
り温度検出器。FIGS. 1 and 2 show an embodiment of the present invention. FIG. 1 is a circuit diagram of an absorption refrigerator, and FIG. 2 is a diagram showing the relationship between the return temperature of hot water and the opening degree of a three-way valve. (1>... Regenerator, (3)... Evaporator, (21
A)...Hot water outgoing pipe (hot water circulation path), (21B)...
...Hot water return pipe (hot water circulation path), (21C)...Bypass piping, (22)...Hot water three-way valve, (23)
...Cold water outlet temperature detector for control, <24)...Cold water outlet temperature detector for control switching, (25)...Hot water return temperature detector.
Claims (1)
供給配管に接続されて再生器を側路するバイパス配管と
、このバイパス配管或いは加熱源供給配管に設けられた
制御弁と、加熱源の戻り温度により制御弁の開度を制御
する機構とを備えた吸収冷凍機の再生器において、冷水
温度を検出して上記制御弁の開度を制御する機構を備え
、冷水温度が設定値より高い場合には加熱源の戻り温度
により制御弁の開度を制御し、設定値以下の場合には冷
水温度により制御弁の開度を制御することを特徴とする
再生器の制御装置。 ２、温水を加熱源とする吸収冷凍機の再生器において、
再生器からの温水の戻り温度で温水供給配管に設けられ
た三方弁の開度を制御しつつ冷水出口温度を検出し、こ
の冷水出口温度が設定値に達したときには三方弁の制御
を冷水出口温度による制御に切替えることを特徴とした
再生器の制御装置。[Claims] 1. A heating source supply pipe connected to the regenerator, a bypass pipe connected to the heat source supply pipe and bypassing the regenerator, and a heat source supply pipe connected to the regenerator, and a A regenerator for an absorption chiller equipped with a control valve and a mechanism that controls the opening degree of the control valve according to the return temperature of the heating source, the regenerator having a mechanism that detects the chilled water temperature and controls the opening degree of the control valve. , a regeneration characterized in that when the chilled water temperature is higher than a set value, the opening degree of the control valve is controlled by the return temperature of the heating source, and when the chilled water temperature is below the set value, the opening degree of the control valve is controlled by the chilled water temperature. device control device. 2. In the regenerator of an absorption refrigerator that uses hot water as a heating source,
The cold water outlet temperature is detected while controlling the opening degree of the three-way valve installed in the hot water supply piping based on the hot water return temperature from the regenerator, and when the cold water outlet temperature reaches the set value, the three-way valve is controlled at the cold water outlet. A regenerator control device characterized by switching to temperature-based control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1275335A JP2823266B2 (en) | 1989-10-23 | 1989-10-23 | Regenerator control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1275335A JP2823266B2 (en) | 1989-10-23 | 1989-10-23 | Regenerator control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03137461A true JPH03137461A (en) | 1991-06-12 |
| JP2823266B2 JP2823266B2 (en) | 1998-11-11 |
Family
ID=17554034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1275335A Expired - Fee Related JP2823266B2 (en) | 1989-10-23 | 1989-10-23 | Regenerator control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2823266B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995034789A1 (en) * | 1994-06-10 | 1995-12-21 | Tokyo Gas Co., Ltd. | Absorption water chiller/heater and method of controlling same |
-
1989
- 1989-10-23 JP JP1275335A patent/JP2823266B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995034789A1 (en) * | 1994-06-10 | 1995-12-21 | Tokyo Gas Co., Ltd. | Absorption water chiller/heater and method of controlling same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2823266B2 (en) | 1998-11-11 |
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