JPH02242049A - Cooling control device for refrigerator - Google Patents
Cooling control device for refrigeratorInfo
- Publication number
- JPH02242049A JPH02242049A JP6129789A JP6129789A JPH02242049A JP H02242049 A JPH02242049 A JP H02242049A JP 6129789 A JP6129789 A JP 6129789A JP 6129789 A JP6129789 A JP 6129789A JP H02242049 A JPH02242049 A JP H02242049A
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- cooling
- condenser
- temperature
- pressure
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 33
- 239000000498 cooling water Substances 0.000 claims abstract description 76
- 239000003507 refrigerant Substances 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000004378 air conditioning Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は原子力発電所等各種建屋の換気を行う換気空調
系の冷水の冷凍機に関するものである。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a chilled water refrigerator for a ventilation air conditioning system that ventilates various buildings such as a nuclear power plant.
（従来の技術）
一般に原子力発電所等の建屋内における換気空調設備の
冷却に使用する例えばターボ冷凍機は密閉式であり、タ
ーボ圧縮機とその駆動電動機、熱交換器（蒸発器、凝縮
器）及び動力伝送装置、潤滑装置、抽気装置さらに容量
制御装置と保安装置、その他付属品から構成されていて
、この冷凍機システムは圧縮機により圧縮した冷媒を冷
却水により凝縮、液化して、その冷媒を蒸発させる時に
周囲の熱をうばう特性を利用したものである。(Prior art) For example, a turbo chiller, which is generally used for cooling ventilation and air conditioning equipment in buildings such as nuclear power plants, is a hermetic type, and includes a turbo compressor, its driving motor, and a heat exchanger (evaporator, condenser). The refrigerator system consists of a power transmission device, a lubrication device, an air extraction device, a capacity control device, a safety device, and other accessories. It takes advantage of the property of absorbing surrounding heat when evaporating.
このうち冷媒を冷却水により冷却して凝縮、液化する凝
縮器について、従来は第３図の構成図に示すように、図
示しない圧縮機から高温、高圧のガス状の冷媒を凝縮器
１に流入させ、凝縮器１内に設置した冷却管２に図示し
ない冷却水供給設備より冷却水を通水して、冷媒３を凝
縮、液化させて図示しない蒸発器へ送出している。この
時冷凍機の運転が低出力の時と高出力の時により冷媒３
の流入量が異なり゛、これにより凝縮器１内の圧力が変
化するので、この圧力変化を圧力検出器４で検出して演
算装置５に圧力信号として入力し、演算装置５からの信
号により冷却水人口弁６の開度を変イヒして、凝縮器１
内の冷却管２に流す冷却水の流量を冷媒３が効果的に冷
却、液化するように制御している。Among these, regarding the condenser that cools the refrigerant with cooling water to condense and liquefy it, conventionally, as shown in the block diagram of Fig. 3, a high temperature, high pressure gaseous refrigerant flows into the condenser 1 from a compressor (not shown). Cooling water is passed through a cooling pipe 2 installed in the condenser 1 from a cooling water supply facility (not shown) to condense and liquefy the refrigerant 3 and send it to an evaporator (not shown). At this time, depending on when the refrigerator is operating at low output or high output, refrigerant 3
This changes the pressure inside the condenser 1, so this pressure change is detected by the pressure detector 4 and input as a pressure signal to the calculation device 5, and the signal from the calculation device 5 is used to cool the By changing the opening degree of the water intake valve 6, the condenser 1
The flow rate of the cooling water flowing into the cooling pipe 2 inside is controlled so that the refrigerant 3 is effectively cooled and liquefied.
（発明が解決しようとする課題）
冷却水人口弁６の開度調節による冷却水の流量制御は、
凝縮器１内の圧力変化を基に実施しているため、この時
の凝縮器１内の圧力変化に対する冷却水人口弁６の開度
調節は第４図の特性曲線図に示すように、冷凍機の出力
が上昇すると凝縮器１に流入する冷媒３が増加するため
内部の圧力は圧力曲線１０（実線）のように上昇する。(Problem to be Solved by the Invention) Cooling water flow rate control by adjusting the opening degree of the cooling water population valve 6 is as follows:
Since this is carried out based on the pressure change in the condenser 1, the opening degree adjustment of the cooling water valve 6 in response to the pressure change in the condenser 1 at this time is based on the refrigeration characteristic curve diagram in FIG. As the output of the machine increases, the amount of refrigerant 3 flowing into the condenser 1 increases, so the internal pressure increases as shown by pressure curve 10 (solid line).
これに対して冷却水人口弁６の開度は、圧力検出器４で
検出した圧力信号で演算装置５を経由し冷却水人口弁６
を調節するため、本来は圧力曲線１０と平行して変化す
べきであるが、通常は開度曲線１１のようにｔ秒の遅れ
が生じ、これに従って冷却水の流量を増加させて冷媒３
の冷却を行っている。また冷却管２に流れる冷却水の温
度は、その供給設備の負荷状態により変化することがあ
り、この冷却水の温度上昇時には凝縮器１における冷却
能力が低下し、冷媒３の流入の増加と重なると凝縮器１
内の圧力が圧力曲線１０ａ（点線）のように上昇して、
斜線部１０ｂにおいては冷却水量が不足して冷媒３の冷
却が困難となる現象が生じることがある。この対策とし
て従来は冷却水人口弁６の開度を開度曲線１２のように
、余裕αを持たせて大きく開き、常に冷却所要流量より
多い冷却水を流してこれを回避していた。このため冷却
水の供給設備の容量を十分大きく選定しなければならず
、冷却水供給設備が大規模になり、その設置場所の確保
等も困難となる等の問題があった。なお開度曲線１１ａ
（点線）は冷却水温度が上昇した時の冷却水人口弁６の
開度を示す。On the other hand, the opening degree of the cooling water population valve 6 is determined by the pressure signal detected by the pressure detector 4 via the calculation device 5.
Originally, it should change parallel to the pressure curve 10 in order to adjust the pressure curve 10, but normally there is a delay of t seconds as shown in the opening curve 11, and the flow rate of the cooling water is increased accordingly.
is being cooled. In addition, the temperature of the cooling water flowing into the cooling pipe 2 may change depending on the load condition of the supply equipment, and when the temperature of this cooling water rises, the cooling capacity in the condenser 1 decreases, which coincides with an increase in the inflow of the refrigerant 3. and condenser 1
The pressure inside increases as shown in the pressure curve 10a (dotted line),
In the shaded portion 10b, a phenomenon may occur in which the amount of cooling water is insufficient and cooling of the refrigerant 3 becomes difficult. Conventionally, as a countermeasure against this problem, the cooling water population valve 6 was opened wide with a margin α as shown in the opening curve 12, and a flow of cooling water larger than the required cooling flow was always allowed to flow to avoid this problem. For this reason, the capacity of the cooling water supply equipment must be selected to be sufficiently large, resulting in problems such as the cooling water supply equipment becoming large-scale and making it difficult to secure a place for its installation. Note that the opening curve 11a
(Dotted line) indicates the opening degree of the cooling water artificial valve 6 when the cooling water temperature rises.
本発明は上記に鑑みてなされたもので、その目的とする
ところは、凝縮器へ供給する冷却水の配管で凝縮器入口
の手前に温度検出手段を設けて圧力検出手段による凝縮
器内の圧力信号と共に、冷却水の温度信号を早期に演算
手段に入力して、冷却水人口弁の開度調節の応答を速く
し、冷却水供給設備の小形化ができる冷凍機の冷却制御
装置を提供することにある。The present invention has been made in view of the above, and its object is to provide temperature detection means in front of the condenser inlet in the cooling water piping that supplies the condenser, and to measure the pressure inside the condenser by the pressure detection means. To provide a cooling control device for a refrigerator, which can quickly input a cooling water temperature signal to a calculation means together with a signal, speed up the response of opening adjustment of a cooling water population valve, and downsize cooling water supply equipment. There is a particular thing.
【発明の構成］
（Ｒ題を解決するための手段）
冷媒を冷却する凝縮器内の圧力検出手段と、凝縮器の入
口に設けた冷却水の温度検出手段と、冷却水の流量調整
をする冷却水人口弁と、前記圧力検出手段からの圧力信
号と前記温度検出手段からの温度信号とを入力して冷却
水流量弁の開度制御をする演算手段を具備する。[Structure of the invention] (Means for solving problem R) A pressure detection means in a condenser that cools a refrigerant, a temperature detection means of cooling water provided at the inlet of the condenser, and a flow rate adjustment of the cooling water. The cooling water flow rate valve is provided with a calculation means for inputting a pressure signal from the pressure detection means and a temperature signal from the temperature detection means to control the opening degree of the cooling water flow rate valve.
（作 用）
冷却水の温度変化をその冷却水が凝縮器内の冷却管に流
入する以前に温度検出手段により検出し、この温度信号
を演算装置に入力して圧力検出手段からの圧力信号と併
せて冷却水人口弁の開度調節を行う。これにより冷却水
の温度変化に対する冷却水流量調節が遅れな〈実施され
、冷却制御が適切に行なわれて流量不足等が発生せず冷
凍機における冷却効果が向上する。(Function) Temperature changes in the cooling water are detected by the temperature detection means before the cooling water flows into the cooling pipe in the condenser, and this temperature signal is input to the arithmetic unit to be used as a pressure signal from the pressure detection means. At the same time, adjust the opening of the cooling water valve. As a result, the cooling water flow rate adjustment in response to the temperature change of the cooling water is carried out without delay, and the cooling control is appropriately performed, so that insufficient flow rate etc. do not occur and the cooling effect in the refrigerator is improved.
（実施例） 本発明の一実施例を図面を参照して説明する。(Example) An embodiment of the present invention will be described with reference to the drawings.
なお上記した従来と同じ構成部分については、同一符号
を付して詳細な説明は省略する。It should be noted that the same components as those of the conventional device described above will be designated by the same reference numerals and detailed explanations will be omitted.
第１図の構成図で示すように凝縮器１内には冷却水を通
す冷却管２が設置してあり、冷却水が冷却水配管７によ
り流されている。圧縮機より流入する高温、高圧でガス
状の冷媒３は、冷却管２により冷却され凝縮、液化して
蒸発器に送出される。As shown in the configuration diagram of FIG. 1, a cooling pipe 2 for passing cooling water is installed in the condenser 1, and the cooling water is passed through a cooling water pipe 7. A high temperature, high pressure, gaseous refrigerant 3 flowing from the compressor is cooled by the cooling pipe 2, condensed and liquefied, and sent to the evaporator.
冷却管２の入口側の冷却水配管７には流量調節手段であ
る冷却水人口弁６と共に、凝縮器１より距離をおいて冷
却水の温度検出手段である温度検出器８が設置してあり
、凝縮器１には内部の圧力検出手段である圧力検出器４
を設ける。またこの圧力検出器４からの圧力信号と前記
温度検出器８からの温度信号を入力して前記冷却水人口
弁６の開度調節信号を出力する演算装置９で構成されて
いる。In the cooling water pipe 7 on the inlet side of the cooling pipe 2, a temperature detector 8, which is a cooling water temperature detection means, is installed at a distance from the condenser 1, together with a cooling water valve 6, which is a flow rate adjustment means. , the condenser 1 is equipped with a pressure detector 4 which is an internal pressure detection means.
will be established. It also includes an arithmetic unit 9 which receives a pressure signal from the pressure detector 4 and a temperature signal from the temperature detector 8 and outputs an opening adjustment signal for the cooling water valve 6.
次に上記構成による作用について説明する。第２図は特
性曲線図で、冷凍機の運転中に負荷が増加すると凝縮器
１内における冷媒３の圧力は圧力曲線１０のように変化
する。この時に冷却管２に供給されている冷却水の温度
が上昇すると圧力は、圧力曲線１０ａ（点線）のように
さらに増加する。Next, the effect of the above configuration will be explained. FIG. 2 is a characteristic curve diagram, and when the load increases during operation of the refrigerator, the pressure of the refrigerant 3 in the condenser 1 changes as shown by a pressure curve 10. At this time, when the temperature of the cooling water supplied to the cooling pipe 2 increases, the pressure further increases as shown by the pressure curve 10a (dotted line).
しかしながらこの冷却水温度の上昇に際しては、温度の
上昇した冷却水が凝縮器１内の冷却管６に流入して凝縮
器１における冷却能力が低下し、凝縮器１内の圧力が上
昇しようとするｔｏ秒前に冷却水配管７において前記温
度検出器８により冷却水温度の上昇を検出し、この温度
信号を前記演算装置９に入力して冷却水の温度上昇に見
合う分だけ冷却水人口弁６を開く、これにより冷却水人
口弁６は開度曲線１３に示すように、凝縮器１内の圧力
が上昇する以前に開き始め、さらに冷媒３の流入増によ
る圧力上昇に対しても従来通りに応答して冷却水人口弁
６の開度調節をするので、冷却水量調整の遅れによる冷
媒３の冷却が困難となる現象を防止する。また冷却水量
の余裕も少なくて済み、急激な冷却水人口弁６の開度変
化がないので、冷却水の流量変化も穏やかになり、冷却
水供給設備容量の余裕は少なくて済む。However, when the cooling water temperature rises, the cooling water whose temperature has increased flows into the cooling pipe 6 in the condenser 1, and the cooling capacity in the condenser 1 decreases, causing the pressure in the condenser 1 to rise. To seconds before, the temperature detector 8 detects an increase in the temperature of the cooling water in the cooling water pipe 7, inputs this temperature signal to the arithmetic unit 9, and controls the cooling water population valve 6 by an amount commensurate with the temperature rise of the cooling water. As a result, the cooling water population valve 6 starts to open before the pressure inside the condenser 1 rises, as shown in the opening curve 13, and the cooling water valve 6 starts to open before the pressure inside the condenser 1 rises, and also remains the same as before even when the pressure rises due to an increase in the inflow of the refrigerant 3. Since the opening degree of the cooling water population valve 6 is adjusted in response, a phenomenon in which cooling of the refrigerant 3 becomes difficult due to a delay in adjusting the amount of cooling water can be prevented. Furthermore, there is only a small margin for the amount of cooling water, and since there is no sudden change in the opening degree of the cooling water population valve 6, the flow rate of the cooling water changes gradually, and the margin for the cooling water supply equipment capacity can be small.
なお冷却水温度の上昇検出と冷却水人口弁６の開度調節
時期（１０）の調整は、冷却管２の入口側の冷却水配管
７における凝縮器１から温度検出器８の設置位置までの
距離を調整して行なえる。Note that the detection of the increase in cooling water temperature and the adjustment of the opening adjustment timing (10) of the cooling water population valve 6 are performed from the condenser 1 to the installation position of the temperature detector 8 in the cooling water pipe 7 on the inlet side of the cooling pipe 2. You can adjust the distance.
［発明の効果］
以上本発明によれば、凝縮器の負荷変化及び特に冷却水
の温度変化に際して、凝縮器内の圧力に影響が生じる以
前に冷却水人口弁の開度調節を行って、凝縮器内の圧力
の調整、即ち冷媒の冷却、液化を効果的に実施できるこ
とと、冷却水の流量も効率良く制御するので冷却水供給
設備を小形化できる効果がある。[Effects of the Invention] According to the present invention, when the load of the condenser changes and especially the temperature of the cooling water changes, the opening degree of the cooling water valve is adjusted before the pressure inside the condenser is affected, and the condensation is reduced. Since the pressure inside the vessel can be effectively adjusted, that is, the refrigerant can be cooled and liquefied, and the flow rate of cooling water can also be efficiently controlled, the cooling water supply equipment can be made smaller.
第１図は本発明の一実施例の構成図、第２図は本発明の
特性曲線図、第３図は従来の
冷却制御装置の構成図、第４図は従来の特性曲線図であ
る。
１・・・凝縮器、 ２・・・冷却管、３・
・・冷媒、 ４・・・圧力検出器、６・
・・冷却水人口弁、 ７・・・冷却水配管、８・
・・温度検出器、 ９・・・演算装置、１０、
１０ａ・・・圧力曲線、
１３・・・開度曲線。
代理人 弁理士 大 胡 典 夫
＠ １ 図
第２図FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a characteristic curve diagram of the present invention, FIG. 3 is a block diagram of a conventional cooling control device, and FIG. 4 is a conventional characteristic curve diagram. 1... Condenser, 2... Cooling pipe, 3...
...Refrigerant, 4...Pressure detector, 6.
...Cooling water population valve, 7...Cooling water piping, 8.
...Temperature detector, 9...Arithmetic device, 10,
10a...Pressure curve, 13...Opening degree curve. Agent Patent Attorney Norio Ogo @ 1 Figure 2
Claims (1)
、凝縮器に設けた圧力検出手段と、凝縮器内の冷却管え
の冷却水配管で凝縮器入口より任意の距離手前に設けた
温度検出手段と、前記圧力検出手段からの圧力信号と前
記温度検出手段からの温度信号とを入力して冷却水の流
量調節手段を制御する演算手段からなることを特徴とす
る冷凍機の冷却制御装置。In a cooling control device for a condenser that cools the refrigerant of a refrigerator, there is a pressure detection means installed in the condenser and a temperature detection means installed at an arbitrary distance before the condenser inlet in the cooling water piping of the cooling pipe inside the condenser. 1. A cooling control device for a refrigerator, comprising: a means for controlling a flow rate of cooling water; and a calculating means for inputting a pressure signal from the pressure detecting means and a temperature signal from the temperature detecting means to control a cooling water flow rate adjusting means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6129789A JPH02242049A (en) | 1989-03-14 | 1989-03-14 | Cooling control device for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6129789A JPH02242049A (en) | 1989-03-14 | 1989-03-14 | Cooling control device for refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02242049A true JPH02242049A (en) | 1990-09-26 |
Family
ID=13167118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6129789A Pending JPH02242049A (en) | 1989-03-14 | 1989-03-14 | Cooling control device for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02242049A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016080202A (en) * | 2014-10-10 | 2016-05-16 | 三菱重工業株式会社 | Heat source system, and cooling water control device and control method therefor |
-
1989
- 1989-03-14 JP JP6129789A patent/JPH02242049A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016080202A (en) * | 2014-10-10 | 2016-05-16 | 三菱重工業株式会社 | Heat source system, and cooling water control device and control method therefor |
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