JP2704550B2 - Automatic number control of hot water boilers - Google Patents
Automatic number control of hot water boilersInfo
- Publication number
- JP2704550B2 JP2704550B2 JP14584589A JP14584589A JP2704550B2 JP 2704550 B2 JP2704550 B2 JP 2704550B2 JP 14584589 A JP14584589 A JP 14584589A JP 14584589 A JP14584589 A JP 14584589A JP 2704550 B2 JP2704550 B2 JP 2704550B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- temperature
- load
- boilers
- boiler
- 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 - Fee Related
Links
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、温水ボイラーの多缶設置システムにおい
て、負荷の値に合わせて最適に温水ボイラーの稼動台数
を制御するようにした自動台数制御方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an automatic unit control method for controlling the number of hot water boilers to be operated optimally in accordance with a load value in a hot water boiler multi-can installation system. It is about.
近年、健康産業の増加に伴い、複数の浴槽や温水プー
ルを持った施設が増加している。これらの施設は、浴槽
や温水プールの他にシャワー、洗面等への給湯用及び室
内等の暖房用としての熱源も必要とするが、使用温水温
度はそれぞれの設備により異なっているため、使用温水
を昇温する際には個別に設けた熱交換器へ熱源温水を供
給するようになっている。In recent years, with the increase in the health industry, facilities having a plurality of bathtubs and heated pools have been increasing. These facilities require heat sources for hot water supply to showers, washbasins, etc. and for heating indoors, in addition to bathtubs and heated water pools. When the temperature is raised, the heat source hot water is supplied to a separately provided heat exchanger.
熱源温水を供給するための熱源機器としては、大容量
であっても運転管理を無資格で行うことのできる、真空
式ヒーター或いは無圧缶水式ヒーターが広く用いられて
いる。第7図に従来の実施例の系統図を示すが、図中
(1′)は真空式ヒーター、(5′)は熱交換器、
(6′)は循環ポンプを示す。As a heat source device for supplying the heat source hot water, a vacuum heater or a non-pressure canister heater capable of performing operation management without any qualification even with a large capacity is widely used. FIG. 7 shows a system diagram of a conventional embodiment, in which (1 ') is a vacuum heater, (5') is a heat exchanger,
(6 ') shows a circulation pump.
上述のシステムを用いる場合、次のような問題点があ
る。熱源温水の循環系路は、それぞれの設備ごとに独立
した構成になっており、系路相互の熱の隔通性に欠け
る。即ち、熱出力の設計を行う際、各系路毎にピーク値
を算出し熱源機器の総熱容量を設定するが、各系路のピ
ークが重なることはまずなく、実際のピーク値は算出総
熱容量よりもかなり低くなっており、結果的に効率の悪
い運転状態が多くなっている。When the above system is used, there are the following problems. The circulation path of the heat source hot water has an independent configuration for each facility, and lacks heat isolation between the paths. That is, when designing the heat output, the peak value is calculated for each path and the total heat capacity of the heat source equipment is set. However, the peak of each path is unlikely to overlap, and the actual peak value is the calculated total heat capacity. Significantly lower than this, resulting in more inefficient operating conditions.
また、各系路ごとに熱源機器側と負荷側の2つの熱交
換器を必要とするため設備コストが高く、その他、真空
式ヒーター及び無圧缶水式ヒーターには供給熱源温水温
度に上限があり、80〜85℃程度までの熱源温水しか供給
できないという問題もある。In addition, equipment costs are high because two heat exchangers, one for the heat source equipment and one for the load, are required for each system path. In addition, the vacuum heater and non-pressure boiler heater have an upper limit on the temperature of hot water supplied by the heat source. There is also a problem that only heat source hot water up to about 80 to 85 ° C. can be supplied.
上述の問題点を解決するための手段として、特開昭59
−189247号公報に示されるような温水ボイラーの多缶設
置用制御装置が発明され、高効率運転と熱の安定供給等
の点で優れた効果を得ているが、この発明は、この多缶
設置システムをさらに改良したもので、具体的には、複
数台の温水ボイラーと負荷とを給湯系路及び戻り系路で
連結した給湯システムにおいて、戻り側集合部における
湯温を検出し、この検出温度と予め設定しておいた温度
との温度差に応じ、或いは温水の循環量を検出し、この
検出値に応じ、前記温水ボイラーの稼動台数を制御する
操作を含むことを特徴としている。As means for solving the above problems, Japanese Patent Laid-Open No.
A control device for installing a multi-can of a hot water boiler as disclosed in -189247 has been invented and has obtained excellent effects in terms of high efficiency operation and stable supply of heat. This is a further improvement of the installation system.Specifically, in a hot water supply system in which a plurality of hot water boilers and loads are connected by a hot water supply path and a return path, the hot water temperature in a return side collecting part is detected, and this detection is performed. It is characterized by including an operation of detecting the circulating amount of hot water according to a temperature difference between the temperature and a preset temperature, and controlling the number of operating hot water boilers according to the detected value.
この発明によれば、戻り集合部の湯温、或いは熱源温
水の循環量に応じて複数台設置した温水ボイラーの稼動
台数を制御するようにしたので、負荷の状態を正確に把
握でき、負荷状態に合わせて常に適切なボイラーの稼動
状態が得られる。According to the present invention, the number of operating hot water boilers installed in a plurality of units is controlled in accordance with the hot water temperature of the return collecting section or the circulation amount of the heat source hot water, so that the load state can be accurately grasped and the load state can be grasped. Therefore, an appropriate operating state of the boiler can always be obtained.
以下、この発明の好ましい実施例を図面に基づいて説
明する。Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
図中(1)は温水ボイラーで複数台並列に設置してお
り、これらの温水ボイラーと、給湯設備、暖房設備、温
水プール、浴槽等の負荷(2)とを給湯系路(3)及び
戻り系路(4)で連結している。(5)は熱交換器、
(6)は循環ポンプ、(7)は温度センサー、(8)は
流量センサー、(9)は自動台数制御器を示す。In the figure, (1) is a plurality of hot water boilers installed in parallel, and these hot water boilers and loads (2) of hot water supply equipment, heating equipment, hot water pools, bathtubs, etc. are connected to a hot water supply system (3) and return. They are connected by the system (4). (5) is a heat exchanger,
(6) shows a circulation pump, (7) shows a temperature sensor, (8) shows a flow rate sensor, and (9) shows an automatic number controller.
温水ボイラー(1)で加熱されて所定の温度になった
熱源温水は、循環ポンプ(6)の作動により、給湯系路
(3)、熱交換器(5)、戻り系路(4)の循環系路を
循環するようになっており、負荷(2)に個別に設けた
熱交換器(5)で熱交換を行い、それぞれの負荷に熱を
供給するようになっている。この発明においては、検出
器を設けて負荷の状態を正確に把握し、検出した負荷の
状態に合わせて所定の熱量を最も効率良く供給できるよ
うに、ボイラーの稼動台数を制御する。The heat source hot water heated to a predetermined temperature by the hot water boiler (1) is circulated through a hot water supply system (3), a heat exchanger (5), and a return system (4) by the operation of a circulation pump (6). The system circulates through the system, and heat is exchanged by a heat exchanger (5) provided separately for the load (2), and heat is supplied to each load. In the present invention, a detector is provided to accurately grasp the state of the load, and the number of operating boilers is controlled so that a predetermined amount of heat can be supplied most efficiently according to the detected state of the load.
第1図に示す実施例では、温度センサー(7)を戻り
側集合部に設けてこの部分の湯温t2を検出し、この検出
温度と予め設定しておいた温度t0と比較して負荷の状態
を把握し、両者の温度差に応じて自動台数制御器(9)
により温水ボイラー(1)の稼動台数を制御するように
なっている。例えば、負荷量が増加すれば湯温t2が低下
し、温度差が大きくなるので、温水ボイラーの稼動台数
を増やして供給総熱量を増加させる(第2図参照)。戻
り側集合部の湯温t2を検出することにより、負荷の変動
に対して応答性の良い台数制御を行うことができる。In the embodiment shown in FIG. 1, as compared to the temperature t 0 which is provided on the return side collecting portion temperature sensor (7) detecting the water temperature t 2 of this part, which had been previously set as the detected temperature Automatic load controller (9) that grasps the load status and responds to the temperature difference between the two.
Controls the number of operating hot water boilers (1). For example, water temperature t 2 is decreased when increasing load is, the temperature difference increases, thereby increasing the supply total heat by increasing the operating number of hot water boilers (see Figure 2). By detecting the water temperature t 2 of the return-side collecting portion, it is possible to perform good response volume control for variations in load.
温水ボイラーを台数制御する際には、起動・停止の優
先順位を予め設定しておき、その順位に従って起動・停
止させる。また、それぞれの温水ボイラーの稼動率を平
均化するために、適宜、優先順位のローテーションを行
い、異常ボイラーが発生した場合は、次の優先順位のボ
イラーが直ちに稼動してバックアップする。温水ボイラ
ーの燃焼制御方式としては、ON−OFF制御式のものの他
に、三位置制御式或いは比例制御式のものも用いること
ができ、その場合は、稼動台数と同時に個々の温水ボイ
ラーの燃焼量も制御するようにする。When controlling the number of hot water boilers, the starting and stopping priorities are set in advance, and the hot water boilers are started and stopped according to the priorities. In addition, in order to average the operation rates of the respective hot water boilers, priority rotation is appropriately performed, and when an abnormal boiler occurs, the boiler having the next priority immediately operates and backs up. As the combustion control method of the hot water boiler, besides the ON-OFF control type, a three-position control type or a proportional control type can also be used. Also to control.
尚、前記温度センサー(7)の取付位置としては、複
数の熱交換器(5)を上部ヘッダーと下部ヘッダーとの
間に並列に設け(図示せず)、下部ヘッダーに戻り側の
湯温を測定する温度センサーを取付けるようにしてもよ
い。そうすれば、湯温を均一化させて正確な値を検出す
ることが可能である。In addition, as a mounting position of the temperature sensor (7), a plurality of heat exchangers (5) are provided in parallel between the upper header and the lower header (not shown), and the temperature of the hot water on the return side is provided to the lower header. A temperature sensor for measurement may be attached. Then, it is possible to make the hot water temperature uniform and detect an accurate value.
第3図に示す実施例では、流量センサー(8)で熱源
温水の循環量Qも検出し、この検出値に応じて複数台設
置した温水ボイラー(1)の稼動台数を制御するように
なっている。負荷の状態に応じて熱源温水の循環量を可
変する場合、例えば、負荷側の循環水の温度を温度セン
サー(10)で検出して熱源温水用の循環ポンプ(6)の
作動を制御するようにし、負荷が減少して熱源温水の循
環量が減少すれば、それを流量センサーで検出して温水
ボイラー(1)の稼動台数を減少させる。また、負荷増
加時には熱源温水の循環量が増大するので、温水ボイラ
ーの稼動台数を増やすようにする(第4図参照)。In the embodiment shown in FIG. 3, the circulation amount Q of the heat source hot water is also detected by the flow rate sensor (8), and the number of hot water boilers (1) installed is controlled in accordance with the detected value. I have. When the circulation amount of the heat source hot water is varied according to the load state, for example, the operation of the heat source hot water circulation pump (6) is controlled by detecting the temperature of the load side circulating water by the temperature sensor (10). When the load decreases and the circulation amount of the heat source hot water decreases, this is detected by the flow rate sensor and the number of operating hot water boilers (1) is reduced. When the load increases, the circulation amount of the heat source hot water increases, so the number of operating hot water boilers is increased (see FIG. 4).
熱源温水の循環量を検出するには、上述のように流量
センサーを用いて直接検出するようにしてもよいが、そ
の他に、系路内の循環流速を測る方法、給湯側集合部の
圧力と戻り側集合部の圧力との差圧を測る方法などがあ
る。In order to detect the circulation amount of the heat source hot water, it may be directly detected using the flow rate sensor as described above, but in addition, a method of measuring the circulation flow velocity in the system, the pressure of the hot water supply side collecting part and There is a method of measuring the pressure difference from the pressure of the return-side collecting part.
尚、熱源温水の循環量が変化する場合、循環量が所定
のレベル以下になると個々の温水ボイラー内の湯温が上
昇し、安全スイッチが働いて不必要にボイラーの停止イ
ンターロックがかかることがあるので、最低循環量を確
保する必要がある。そのための方法としては、個々の温
水ボイラーの出湯口部に挿入した電動弁(12)の開度を
流量センサー(8)で検出した循環量の値に基づいて調
節する方法(第5図参照)、給湯系路(3)と戻り系路
(4)とをバイパスライン(13)で連結し、このバイパ
スライン中に挿設したバイパスポンプ(14)の稼動を、
流量センサー(8)で検出した循環量の値に基づいて制
御する方法(第6図)などがある。(11)は制御器を示
す。When the circulation amount of the heat source hot water changes, if the circulation amount falls below a predetermined level, the temperature of the hot water in each of the hot water boilers rises, and a safety switch is activated to unnecessarily interlock the stop of the boiler. Therefore, it is necessary to secure the minimum circulation volume. As a method therefor, a method of adjusting the opening degree of the motor-operated valve (12) inserted into the tap hole of each hot water boiler based on the value of the circulation amount detected by the flow rate sensor (8) (see FIG. 5) The hot water supply line (3) and the return line (4) are connected by a bypass line (13), and the operation of a bypass pump (14) inserted in the bypass line is controlled.
There is a method of controlling based on the value of the circulation amount detected by the flow rate sensor (8) (FIG. 6). (11) indicates a controller.
この発明における多缶設置システムに使用する温水ボ
イラーとしては、貫流式のものが適している。即ち、貫
流式温水ボイラーは複数のボイラーを一次側で連結する
ことができるので、複数のボイラーが互いにバックアッ
プ機能を有し、しかも熱交換器は負荷側のみでよく、設
備コストの低減が図れる。また、ボイラーの一次缶水を
加圧して使用できるので、高温のお湯(100℃以上)を
簡単に取出すことができる。As a hot water boiler used in the multi-can installation system according to the present invention, a once-through type is suitable. That is, since the once-through type hot water boiler can connect a plurality of boilers on the primary side, the plurality of boilers have a backup function for each other, and the heat exchanger only needs to be on the load side, so that equipment cost can be reduced. In addition, since the boiler primary can water can be used under pressure, high-temperature hot water (100 ° C. or higher) can be easily taken out.
この発明は、以上のような構成であるので、各温水ボ
イラーを高効率で運転してシステム全体の高効率化が図
れ、燃料費等のランニングコストを低減することができ
るとともに、負荷の状態を正確に把握して所定の熱量を
安定供給することができる。また、一定温度幅の熱源温
水を負荷に安定供給することで負荷側熱交換器の設計が
容易になり、戻り側集合部の湯温を検出してそれを設定
値と比較してボイラーの稼動台数を制御したり、熱源温
水の循環量を検出しその値に応じてボイラーの稼動台数
を制御することで、負荷の変動に対する応答性及び応答
の正確さがさらに向上する。Since the present invention has the above-described configuration, each hot water boiler can be operated with high efficiency to increase the efficiency of the entire system, reduce running costs such as fuel costs, and reduce the load condition. It is possible to supply a predetermined amount of heat stably by accurately grasping. In addition, the stable supply of hot water with a constant temperature range to the load facilitates the design of the load-side heat exchanger, and detects the hot water temperature at the return-side gathering section and compares it with the set value to operate the boiler. By controlling the number of units or detecting the circulation amount of the heat source hot water and controlling the number of operating boilers according to the value, the responsiveness to load fluctuations and the accuracy of the response are further improved.
第1図はこの発明の一実施例を示す系統図、第2図は第
1図の実施例における制御の一例を示すグラフ、第3図
はこの発明における他の実施例を示す系統図、第4図は
第3図の実施例における制御の一例を示すグラフ、第5
図、第6図はこの発明におけるさらに他の実施例を示す
系統図、第7図は従来の実施例を示す系統図である。 (1)……温水ボイラー、(2)……負荷 (3)……給湯系路、(4)……戻り系路 (5)……熱交換器、(6)……循環ポンプ (7)……温度センサー、(8)……流量センサー (9)……自動台数制御器1 is a system diagram showing one embodiment of the present invention, FIG. 2 is a graph showing an example of control in the embodiment of FIG. 1, FIG. 3 is a system diagram showing another embodiment of the present invention, FIG. FIG. 4 is a graph showing an example of control in the embodiment of FIG. 3, and FIG.
FIG. 6 is a system diagram showing still another embodiment of the present invention, and FIG. 7 is a system diagram showing a conventional embodiment. (1) hot water boiler, (2) load (3) hot water supply line, (4) return line (5) heat exchanger, (6) circulating pump (7) …… Temperature sensor (8)… Flow sensor (9) …… Automatic unit controller
Claims (2)
とを給湯系路(3)及び戻り系路(4)で連結した給湯
システムにおいて、戻り側集合部における湯温t2を検出
し、この検出温度と予め設定しておいた温度t0との温度
差(t0−t2)に応じ、所定の温度幅ごとに前記温水ボイ
ラーの稼動台数を制御するごとく操作することを特徴と
する温水ボイラーの自動台数制御方法。1. A plurality of hot water boilers (1) and a load (2)
The hot water system coupled the door in hot water pathways (3) and a return pathway (4), detects the hot water temperature t 2 in the return-side collecting portion, the temperature t 0 set in advance and the detected temperature depending on the temperature difference (t 0 -t 2), automatic number control method for the hot water boiler, characterized by operating as controlling the operation number of the hot water boiler for each predetermined temperature range.
とを給湯系路(3)及び戻り系路(4)で連結した給湯
システムにおいて、前記負荷の値に応じ、温水の循環量
を可変する操作と、温水の循環量Qを検出し、この検出
値に応じて前記温水ボイラーの稼動台数を制御する操作
とを含むことを特徴とする温水ボイラーの自動台数制御
方法。2. A plurality of hot water boilers (1) and a load (2).
In the hot water supply system connecting the hot water supply system (3) and the return system (4), the operation of varying the circulation amount of the hot water according to the value of the load and the circulation amount Q of the hot water are detected. Controlling the number of operating hot water boilers in accordance with the value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14584589A JP2704550B2 (en) | 1989-06-07 | 1989-06-07 | Automatic number control of hot water boilers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14584589A JP2704550B2 (en) | 1989-06-07 | 1989-06-07 | Automatic number control of hot water boilers |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0311262A JPH0311262A (en) | 1991-01-18 |
JP2704550B2 true JP2704550B2 (en) | 1998-01-26 |
Family
ID=15394431
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14584589A Expired - Fee Related JP2704550B2 (en) | 1989-06-07 | 1989-06-07 | Automatic number control of hot water boilers |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2704550B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3078712B2 (en) * | 1994-09-20 | 2000-08-21 | 三浦工業株式会社 | Startup control method in the number control system of fluid heaters |
KR101233893B1 (en) * | 2009-09-24 | 2013-02-15 | 주식회사 경동원 | The Method Of Controlling Parallel Operation of Muti-Water Heater |
JP5416284B2 (en) * | 2010-10-21 | 2014-02-12 | キョンドン ワン コーポレーション | Control method for parallel operation of multiple water heaters |
-
1989
- 1989-06-07 JP JP14584589A patent/JP2704550B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0311262A (en) | 1991-01-18 |
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