JPH03181735A - Chilled and hot water supply system - Google Patents
Chilled and hot water supply systemInfo
- Publication number
- JPH03181735A JPH03181735A JP1321166A JP32116689A JPH03181735A JP H03181735 A JPH03181735 A JP H03181735A JP 1321166 A JP1321166 A JP 1321166A JP 32116689 A JP32116689 A JP 32116689A JP H03181735 A JPH03181735 A JP H03181735A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- flow rate
- cold
- chilled
- water pipe
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は往冷温水供給システムに係り、特に熱発生器と
負荷器との間で冷温水を循環させ、熱発生機で冷温水に
与えられた熱を負荷器において外部と熱交換する冷温水
供給システムに関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a reciprocating hot and cold water supply system, and in particular, to circulating cold and hot water between a heat generator and a load device, and supplying the cold and hot water with the heat generator. The present invention relates to a cold/hot water supply system that exchanges the generated heat with the outside in a load device.
一般に、冷温水供給システムは、熱発生器からの冷温水
を供給機により往水配管を介して負荷器に供給し、負荷
器で熱交換するとともに、その熱交換した後の冷温水を
還水配管を介して熱発生器に戻すようになっている。こ
のような冷温水供給システムでは、冷温水が常に一定流
量で負荷器側に供給される。そこで、従来は負荷器近傍
の上流側に三方弁を設け、この三方弁により負荷器側が
必要としている流量だけを負荷器に流すようにしている
。このようにして、負荷器が要求する熱量がａＩｉＩ節
されている。In general, a cold/hot water supply system supplies cold/hot water from a heat generator to a load device via outgoing water piping, exchanges heat with the load device, and returns the cold/hot water after the heat exchange. The heat is returned to the heat generator via piping. In such a cold/hot water supply system, cold/hot water is always supplied to the load device at a constant flow rate. Therefore, conventionally, a three-way valve is provided on the upstream side near the load device, and this three-way valve allows only the flow rate required by the load device to flow to the load device. In this way, the amount of heat required by the load is reduced to aIiI.
しかしながら、上記従来の冷温水供給システムでは、熱
発生器は常に一定の容量で稼働しているため、負荷器側
が要求する熱量が小さい場合は供給エネルギーの消費比
率が大きくなり無駄が多いという問題がある。このよう
なことから、熱発生源を複数段設け、要求熱量よってそ
の稼働台数を調整するようにするとともに、負荷側では
熱媒体の通流量を調整するようにすることが考えられる
。However, in the above-mentioned conventional cold/hot water supply system, the heat generator always operates at a constant capacity, so if the amount of heat required by the load device is small, the consumption ratio of the supplied energy increases and there is a problem that there is a lot of waste. be. For this reason, it is conceivable to provide multiple stages of heat generation sources and adjust the number of them in operation depending on the required amount of heat, as well as adjust the flow rate of the heat medium on the load side.
しかし、かかる場合では、稼働台数の調整により管路の
内圧が変動し、特に熱負荷の減少により一時的にシステ
ム配管内の圧力が増加し、その後の稼働台数の減少によ
り配管内圧力が規定値に達するようになる。したがって
、配管内は過大圧力となり、ウォータハンマの原因とな
る問題が発生するとともに、圧力変動が流量調節に悪影
響を与え、リニアーな調節を困難にしていた。However, in such a case, the internal pressure in the pipeline fluctuates due to adjustment of the number of operating units, and in particular, the pressure in the system piping increases temporarily due to a decrease in heat load, and then as the number of operating units decreases, the internal pressure in the pipeline increases to the specified value. will reach . Therefore, the inside of the pipe becomes over-pressured, causing problems such as water hammer, and pressure fluctuations have an adverse effect on flow rate adjustment, making linear adjustment difficult.
本発明の目的は、負荷器側が要求する熱量に流量がリニ
アーに追従し、省エネルギ効果の優れ、かつシステム全
体の信頼性が高い冷温水供給システムを提供することで
ある。An object of the present invention is to provide a cold/hot water supply system in which the flow rate linearly follows the amount of heat required by the load device, has an excellent energy saving effect, and has high reliability of the entire system.
上記目的を達成するために、本発明は、複数台並列配置
された熱発生器からの冷温水を供給機により注水配管を
介して負荷器に供給し、該負荷器で熱交換した冷温水を
還水配管を介して前記熱発生器へ戻す冷温水供給システ
ムにおいて、前記還水配管内の冷温水の温度に応じて配
管経路内の冷温水の流量を調節する流量調節手段と、該
流量調節手段の作動により前記還水配管内の冷温水の流
量が変化したとき、その変化量に応じて前記熱発生器と
供給機の運転台数を切替制御する制御手段と、前記熱発
生器と供給機の運転台数が切替わったとき、前記往水配
管内の冷温水の圧力を所定値に調節する圧力調節手段と
、を備えたものである。In order to achieve the above object, the present invention supplies cold and hot water from a plurality of heat generators arranged in parallel to a load device via a water injection pipe using a supply device, and then exchanges heat with the cold and hot water in the load device. In the system for supplying cold and hot water that is returned to the heat generator via the return water piping, a flow rate adjustment means that adjusts the flow rate of the cold and hot water in the piping route according to the temperature of the cold and hot water in the return water piping, and the flow rate adjustment means. a control means for switching and controlling the operating number of the heat generator and the supply device according to the amount of change when the flow rate of cold and hot water in the return water pipe changes due to the operation of the means; and the heat generator and the supply device. and pressure adjusting means for adjusting the pressure of cold and hot water in the incoming water pipe to a predetermined value when the number of operating units is changed.
上記構成によれば、流量調整手段は、還水配管内の冷温
水の温度を検出し、その温度が規定値になるように配管
経路内の冷温水の流量を調整する。According to the above configuration, the flow rate adjustment means detects the temperature of the cold and hot water in the return water pipe, and adjusts the flow rate of the cold and hot water in the pipe route so that the temperature becomes a specified value.
配管経路内の冷温水の流量を調節することにより、還水
配管内の冷温水の流量が変化するので、その変化量を制
御手段が検出して、その時の還水配管内の冷温水流量、
すなわち負荷器内の冷温水流量に適するように熱発生器
と供給機の運転台数を切替制御する。熱発生器と供給機
の運転台数を切替えると、往水配管内の冷温水の圧力が
変動するため、流量調節手段による流量１ｉ！ｆｆに悪
影響を与え、リニアーな調節が難しいばかりでなく、ウ
ォータハンマの原因ともなる。そこで、流量調節により
生じた往水配管内の冷温水の圧力変動を圧力調整手段が
検知してその圧力が規定値になるように調節することが
できる。By adjusting the flow rate of cold and hot water in the piping route, the flow rate of cold and hot water in the return water pipe changes, so the control means detects the amount of change and adjusts the flow rate of cold and hot water in the return water pipe at that time,
That is, the number of operating heat generators and supply devices is switched and controlled to suit the flow rate of cold and hot water in the load device. When the number of operating heat generators and supply machines is changed, the pressure of cold and hot water in the incoming water pipe changes, so the flow rate by the flow rate adjustment means is 1i! Not only does it adversely affect ff and make linear adjustment difficult, but it also causes water hammer. Therefore, the pressure adjusting means can detect the pressure fluctuation of the cold and hot water in the outgoing water pipe caused by the flow rate adjustment and adjust the pressure to a specified value.
以下に本発明の一実施例を図面を参照して説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明に係る冷温水供給システムの概略構成を
示している。図に示すように、複数台の熱発生器１が並
列に配置され、熱発生器ｌにはそれぞれ供給機２が接続
されている。供給機２の吐出側は集合管としての往水配
管４により負荷器３と結ばれ、負荷器３は熱発生器１の
吸込側とは還水配管５の分岐部により結ばれている。負
荷器３近傍の往水配管４には三方弁７が設けられ、この
二方弁７は還水配管５に設けられた温度検出器６により
、その開度が制御される。温度検出器６により下流側の
還水配管５には流量検出器８が設けられ、この流量検出
器８からの検出信号を受けた制御器１３により、熱発生
器ｌと供給機２の運転が台数制御されるようになってい
る。また三方弁７より上流側の往水配管４には圧力調節
二方弁１０が配設され、この圧力調節二方弁１０は、そ
の下流に設けられた圧力検出器９により開度が制御され
る。圧力ｇ４節二方弁１０より上流側の往水配管４と流
量検出器８より下流側の還水配管５との間にはバイパス
配管１１が設けられ、このバイパス配管の途中に前記圧
力検出器９により開度制御される前記圧力調節二方弁１
０と同様な二方弁１２が配設されている。図中、符号１
４は供給機２の吐出例に設けられた逆止弁である。FIG. 1 shows a schematic configuration of a cold/hot water supply system according to the present invention. As shown in the figure, a plurality of heat generators 1 are arranged in parallel, and a supply device 2 is connected to each heat generator 1. The discharge side of the feeder 2 is connected to a load device 3 by an outgoing water pipe 4 as a collecting pipe, and the load device 3 is connected to the suction side of the heat generator 1 by a branch part of a return water pipe 5. A three-way valve 7 is provided in the outgoing water pipe 4 near the load device 3, and the opening degree of this two-way valve 7 is controlled by a temperature sensor 6 provided in the return water pipe 5. A flow rate detector 8 is provided in the return water pipe 5 on the downstream side of the temperature detector 6, and a controller 13 receiving a detection signal from the flow rate detector 8 controls the operation of the heat generator 1 and the feeder 2. The number of units is controlled. Further, a pressure regulating two-way valve 10 is disposed in the outgoing water pipe 4 on the upstream side of the three-way valve 7, and the opening degree of the pressure regulating two-way valve 10 is controlled by a pressure detector 9 disposed downstream thereof. Ru. A bypass pipe 11 is provided between the outgoing water pipe 4 on the upstream side of the pressure g4 node two-way valve 10 and the return water pipe 5 on the downstream side of the flow rate detector 8, and the pressure detector is installed in the middle of this bypass pipe. The pressure regulating two-way valve 1 whose opening degree is controlled by 9
A two-way valve 12 similar to 0 is provided. In the figure, code 1
4 is a check valve provided in the discharge example of the feeder 2.
なお、本実施例では、温度検出器６および二方弁７は流
量ｔｉｉｖ手段を、流量検出器８および制御器９は制御
手段を、圧力検出器９、圧力調節二方弁１０、バイパス
配管１１および二方弁１２は圧力調節手段をそれぞれ構
成している。In this embodiment, the temperature detector 6 and the two-way valve 7 serve as the flow rate TIIV means, the flow rate detector 8 and the controller 9 serve as the control means, the pressure detector 9, the pressure regulating two-way valve 10, and the bypass piping 11. and the two-way valve 12 constitute pressure regulating means.
次に本実施例の作用について説明する。Next, the operation of this embodiment will be explained.
熱発生機１で熱の供給を受けた冷温水は供給機２により
加圧され、往水配管４を介して矢印Ａのように負荷器３
に送られる。そして、その冷温水は負荷Ｂ３で熱交換さ
れた後、還水配管５を介して矢印Ｂのように熱発生機１
へ戻される。このとき、還水配管５内の冷温水の温度は
温度検出器６により検出され、その検出結果に基づいて
二方弁７の開度が制御され、往水配管４内の冷温水の流
量が調節される。往水配管４内の冷温水の流量を調節す
ることにより、還水配管５内の冷温水の流量も変化する
ので、その変化量を流量検出器８で検出して、その時の
還水配管５内の冷温水流量に適するように、制御器９が
熱発生器１と供給機２の運転台数を切替制御する。この
とき、供給機２の運転台数を切替えることにより往水配
管４内の冷温水の圧力が変動して、二方弁７による流Ｎ
調節が難しくなり、また、ウォータハンマの原因ともな
る。そこで、本実施例では、往水配管４内の圧力変動を
圧力検出器９により検出し、その検出結果に応して圧力
調節二方弁ＩＯの開度を制御するとともに、二方弁１２
の開度も制御してバイパス配管１１に冷温水を流すよう
にする。これにより、供給機２の運転台数が切替わって
も往水配管４内の圧力を規定値に保持することが可能と
なる。The cold and hot water that has been supplied with heat by the heat generator 1 is pressurized by the supply device 2, and is sent to the load device 3 as shown by arrow A via the outgoing water pipe 4.
sent to. After the cold/hot water undergoes heat exchange with the load B3, it passes through the return water pipe 5 to the heat generator 1 as shown by arrow B.
be returned to. At this time, the temperature of the cold and hot water in the return water pipe 5 is detected by the temperature detector 6, and the opening degree of the two-way valve 7 is controlled based on the detection result, and the flow rate of cold and hot water in the outgoing water pipe 4 is controlled. adjusted. By adjusting the flow rate of cold and hot water in the outgoing water pipe 4, the flow rate of cold and hot water in the return water pipe 5 also changes, so the amount of change is detected by the flow rate detector 8, and the flow rate of the cold and hot water in the return water pipe 5 at that time is detected. A controller 9 switches and controls the number of operating heat generators 1 and supply devices 2 to suit the flow rate of cold and hot water within. At this time, by switching the number of operating supply machines 2, the pressure of cold and hot water in the outgoing water pipe 4 changes, and the flow of N by the two-way valve 7 is changed.
Adjustment becomes difficult and may also cause water hammer. Therefore, in this embodiment, the pressure fluctuation in the outgoing water pipe 4 is detected by the pressure detector 9, and the opening degree of the pressure regulating two-way valve IO is controlled according to the detection result.
The opening degree of the bypass pipe 11 is also controlled to allow cold and hot water to flow through the bypass pipe 11. Thereby, even if the number of operating supply machines 2 is changed, it is possible to maintain the pressure in the outgoing water pipe 4 at a specified value.
なお、熱媒体としては冷温水以外の液体であっても、本
発明は適用可能である。Note that the present invention is applicable to liquids other than cold and hot water as the heat medium.
〔発明の効果］
以上説明したように、本発明によれば、負荷にＭ通な流
量の冷温水を流すようにして、熱発生器および供給機の
無用な運転をなくすことができるので、省エネルギ効果
を向上させることができ、エネルギコストを大幅に低減
させることが可能となる。[Effects of the Invention] As explained above, according to the present invention, it is possible to flow cold and hot water at a flow rate of M through the load, thereby eliminating unnecessary operation of the heat generator and the supply machine. Energy efficiency can be improved and energy costs can be significantly reduced.
また、往水配管内に過大の圧力を生しさせず、リニアの
流ｔｍｉｆｆを行うことができるので、システムの操作
性と信頼性を向上させることが可能となる。Further, since it is possible to perform linear flow tmiff without creating excessive pressure in the incoming water pipe, it is possible to improve the operability and reliability of the system.
第１図は本発明に係る冷温水供給システムの概略構成図
である。
１・・・・・・熱発生器、２・・・・・・供給機、３・
・・・・・負荷器４・・・・・・往水配管、５・・・・
・・還水配管、６・・・・・・温度検出器、７．１２・
・・・・・二方弁、８・・・・・・流量検出器、９・・
・・・・圧力検出器、ＩＯ・・・・・・圧力１１節二方
弁、１１・・・・・・バイパス配管、１３・・・・・・
制御器、１４・・・・・・逆止弁。FIG. 1 is a schematic diagram of a cold/hot water supply system according to the present invention. 1...Heat generator, 2...Supplier, 3.
... Load device 4 ... Incoming water piping, 5 ...
...Return water piping, 6...Temperature detector, 7.12.
...Two-way valve, 8...Flow rate detector, 9...
...Pressure detector, IO...Pressure 11-section two-way valve, 11...Bypass piping, 13...
Controller, 14...Check valve.
Claims (1)
供給機により往水配管を介して負荷器に供給し、該負荷
器で熱交換した冷温水を還水配管を介して前記熱発生器
へ戻す冷温水供給システムにおいて、 前記還水配管内の冷温水の温度に基づいて配管経路内の
冷温水の流量を調節する流量調節手段と、該流量調節手
段の作動により前記還水配管内の冷温水の流量が変化し
たとき、その変化量に基づいて前記熱発生器と供給機の
運転台数を切替制御する制御手段と、前記熱発生器と供
給機の運転台数が切替わったとき、前記往水配管内の冷
温水の圧力を所定値に調節する圧力調節手段と、を備え
たことを特徴とする冷温水供給システム。(1) Cold/hot water from a plurality of heat generators arranged in parallel is supplied to the load device via the outgoing water piping by a supply device, and the cold/hot water heat exchanged by the load device is sent to the load device via the return water piping. In a system for supplying cold and hot water to be returned to a heat generator, a flow rate adjusting means for adjusting the flow rate of cold and hot water in a piping route based on the temperature of the cold and hot water in the return water piping, and a flow rate adjusting means for adjusting the flow rate of the cold and hot water in the piping route based on the temperature of the cold and hot water in the return water piping; A control means for switching and controlling the number of operating heat generators and supply machines based on the amount of change when the flow rate of cold and hot water in the pipe changes, and switching the number of operating heat generators and supply machines. A cold/hot water supply system comprising: a pressure regulating means for adjusting the pressure of the cold/hot water in the outgoing water pipe to a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1321166A JPH03181735A (en) | 1989-12-11 | 1989-12-11 | Chilled and hot water supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1321166A JPH03181735A (en) | 1989-12-11 | 1989-12-11 | Chilled and hot water supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03181735A true JPH03181735A (en) | 1991-08-07 |
Family
ID=18129538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1321166A Pending JPH03181735A (en) | 1989-12-11 | 1989-12-11 | Chilled and hot water supply system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03181735A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004245560A (en) * | 2002-10-18 | 2004-09-02 | Mitsubishi Jisho Sekkei Inc | Heat source system, control method of heat source system, heat source and control method of heat source |
| JP2014001872A (en) * | 2012-06-15 | 2014-01-09 | Toenec Corp | Heat source performance evaluation system for air conditioning |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6159042A (en) * | 1984-08-29 | 1986-03-26 | Shigeru Ueki | Roller of power unit |
| JPS6299697A (en) * | 1985-10-25 | 1987-05-09 | Meiden Eng Kk | Pumping device |
-
1989
- 1989-12-11 JP JP1321166A patent/JPH03181735A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6159042A (en) * | 1984-08-29 | 1986-03-26 | Shigeru Ueki | Roller of power unit |
| JPS6299697A (en) * | 1985-10-25 | 1987-05-09 | Meiden Eng Kk | Pumping device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004245560A (en) * | 2002-10-18 | 2004-09-02 | Mitsubishi Jisho Sekkei Inc | Heat source system, control method of heat source system, heat source and control method of heat source |
| JP2014001872A (en) * | 2012-06-15 | 2014-01-09 | Toenec Corp | Heat source performance evaluation system for air conditioning |
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