JPH0240447A - Flow controller for multi-unit type hot water supply apparatus - Google Patents
Flow controller for multi-unit type hot water supply apparatusInfo
- Publication number
- JPH0240447A JPH0240447A JP19030688A JP19030688A JPH0240447A JP H0240447 A JPH0240447 A JP H0240447A JP 19030688 A JP19030688 A JP 19030688A JP 19030688 A JP19030688 A JP 19030688A JP H0240447 A JPH0240447 A JP H0240447A
- Authority
- JP
- Japan
- Prior art keywords
- water
- amount
- solenoid valve
- flow rate
- hot water
- 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 264
- 238000001514 detection method Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 12
- 239000008400 supply water Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、加熱される水を分流させて少なくとも２つの
熱交換器へ送り、各熱交換器においてそれぞれ加熱し、
加熱後に合流させるよう給湯器を並列接続させた併設型
給湯器の水量制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides a method for dividing water to be heated and sending it to at least two heat exchangers, heating the water in each heat exchanger, and
The present invention relates to a water flow control device for an attached water heater in which water heaters are connected in parallel so that the water heaters are combined after heating.
［従来の技術］
例えば２つの熱交換器を設けた併設型給湯器では、各熱
交換器への水の流入を検知して作動する加熱装置がそれ
ぞれ備えられ、また一方の熱交換器への水管中に水の流
入を遮断する電磁弁が設けられている。そして、使用水
量が少ない場合には、電磁弁が閉じられて一方の熱交換
器への水の供給が停止されて、他方の熱交換器のみで加
熱が行われ、水流によって羽根車が回転する水量センサ
によって一定水量以上の水が検知されるときには、電磁
弁が開かれ両方の熱交換器によりそれぞれ加熱が行われ
る。[Prior Art] For example, in an attached water heater equipped with two heat exchangers, each heat exchanger is equipped with a heating device that operates by detecting the inflow of water into the heat exchanger, and A solenoid valve is provided in the water pipe to block the inflow of water. When the amount of water used is small, the solenoid valve is closed and the water supply to one heat exchanger is stopped, heating is performed only by the other heat exchanger, and the impeller is rotated by the water flow. When the water amount sensor detects a certain amount of water or more, the solenoid valve is opened and both heat exchangers perform heating.
［発明が解決しようとする課Ｂ］
しかし、水量センサの羽根車は、必ずしも流入水量に応
じ゛Ｃ回転しないため、一定水量の水が流入する場合で
も、水量センサの出力は変動する。[Problem B to be Solved by the Invention] However, since the impeller of the water flow sensor does not necessarily rotate according to the amount of inflow water, the output of the water flow sensor fluctuates even when a constant amount of water flows in.
すると、水量センサの出力に応じて電磁弁が開閉してし
まい、各熱交換器へ流入する水量が安定しない。Then, the solenoid valve opens and closes depending on the output of the water amount sensor, making the amount of water flowing into each heat exchanger unstable.
従って、水量センサの出力変動に応じて加熱装置が作動
、停止を繰り返すことになり、熱交換器から流出する湯
水の温度が変化して安定しないという問題がある。Therefore, the heating device repeats activation and deactivation in response to fluctuations in the output of the water amount sensor, causing a problem in that the temperature of the hot water flowing out from the heat exchanger changes and becomes unstable.
本発明は、複数の熱交換器を備えた併設型給湯器におい
て、流出する湯水の温度を安定させることができる水量
制御装置を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a water flow control device that can stabilize the temperature of hot water flowing out of a co-located water heater equipped with a plurality of heat exchangers.
［課題を解決するための手段］
本発明は、水供給路中に並列接続して設けられた複数の
熱交換器と、該熱交換器のうち少なくとも１つへ水を導
く流入路中に設けられた遮断用電磁弁と、前記水供給路
に供給される水量を検知する水量検知手段とを備え、前
記水量検知手段により検知される水量に基づいて前記遮
断用電磁弁を開閉する併設型給湯器の水量制御装置にお
いて、前記遮断用電磁弁を開状態にするための第１の基
準水量と、前記遮断用電磁弁を閉状態にするための第２
の基準水量とを設け、前記第２の基準水量は前記第１の
基準水量より少なく設定されたことを技術的手段とする
。[Means for Solving the Problems] The present invention provides a plurality of heat exchangers connected in parallel in a water supply path, and a plurality of heat exchangers provided in an inlet path that leads water to at least one of the heat exchangers. an attached-type hot water supply system, comprising: a shutoff solenoid valve, and a water amount detection means for detecting the amount of water supplied to the water supply path, and which opens and closes the shutoff solenoid valve based on the amount of water detected by the water amount detection means. In the water flow rate control device for a container, a first reference water flow rate for opening the shutoff solenoid valve, and a second reference water flow rate for closing the shutoff solenoid valve.
The technical means is that a reference water amount is provided, and the second reference water amount is set to be smaller than the first reference water amount.
［作用］
本発明では、水供給路に流入した水は、遮断用電磁弁が
設けられていない熱交換器へ導かれ、その水量が第１の
基準水量以上になると、遮断用電磁弁が開かれる。この
とき、流入した水量が第１の基準水量付近の場合には、
水１検知手段の出力変動により、検知される水量が第１
の基準水量以下になることがある。しかし、遮断用電磁
弁を閉状態にするための第２の基準水量は、第１の基準
水量より少なく設定されているため、検知される水量が
第１の基準水量以下になっても、Ｚ所用電磁弁が閉じら
れることはない。[Function] In the present invention, water flowing into the water supply path is guided to a heat exchanger that is not provided with a solenoid valve for shutoff, and when the amount of water exceeds a first reference water amount, the solenoid valve for shutoff opens. It will be done. At this time, if the amount of water that has flowed in is near the first reference water amount,
Due to the output fluctuation of the water 1 detection means, the amount of water detected is
The water level may be below the standard water level. However, since the second reference water volume for closing the shutoff solenoid valve is set to be smaller than the first reference water volume, even if the detected water volume is less than the first reference water volume, Z The required solenoid valve is never closed.
検知される水量が第２の基準水量以下になると、遮断用
電磁弁が閉じられる。When the detected amount of water becomes equal to or less than the second reference amount of water, the shutoff solenoid valve is closed.
［発明の効果］
本発明では、流入水量が遮断用電磁弁を開状態にするた
めの第１の基準水量前後であっても、旦、遮断用電磁弁
が開くと、第２の基準水量以下にならない限り遮断用電
磁弁が閉じることがない。[Effects of the Invention] In the present invention, even if the amount of inflow water is around the first reference water amount for opening the solenoid valve for shutoff, once the solenoid valve for shutoff is opened, the amount of water becomes equal to or less than the second standard water amount. The shutoff solenoid valve will not close unless the
従って、流入した水は各熱交換器をそれぞれ通過して、
加熱状態が変化しないため、流出する湯水の温度が変動
しない。その結果、安定した温度の湯水が流出する。Therefore, the incoming water passes through each heat exchanger,
Since the heating condition does not change, the temperature of the hot water flowing out does not fluctuate. As a result, hot water with a stable temperature flows out.
［実施例］ 次に本発明を実施例に基づいて説明する。[Example] Next, the present invention will be explained based on examples.
第２図に示す併設型ガス給湯器１は、図示しない水供給
源と接続された給水管２から供給される水を水管１０．
２０へ分流させて、熱交換器１１．２１によってそれぞ
れ加熱した後に給湯管２ａへ合流させて給湯を行うもの
で、給湯器ケース３内には、各熱交換器１１．２１を収
容し同等の加熱能力を備えた燃焼器３０．４０が備えら
れ、各熱交換器１１．２１の内部を通過する水をそれぞ
れ加熱する。燃焼器３０．４０は、制御回路５０．６０
によってそれぞれ制御される。また、各水管１０．２０
を通過する水は、中継制＃回路７０によって水量制御が
行われ、各回路はコントローラ８０の操作に応じて制御
する。The attached gas water heater 1 shown in FIG. 2 supplies water from a water pipe 10 to a water pipe 2 connected to a water supply source (not shown).
20, heated by heat exchangers 11.21, and then merged into hot water supply pipe 2a to supply hot water.Inside the water heater case 3, each heat exchanger 11.21 is housed, and hot water is supplied to the hot water supply pipe 2a. A combustor 30.40 with heating capacity is provided to respectively heat the water passing inside each heat exchanger 11.21. The combustor 30.40 has a control circuit 50.60
each controlled by In addition, each water pipe 10.20
The amount of water passing through is controlled by a relay system # circuit 70, and each circuit is controlled according to the operation of a controller 80.
給水管２には、水量センサ４と入水温サーミスタ５とが
設けられ、供給される水は水量と水温が検知された後に
、木管１０と水管２０によって各熱交換器１１．２１へ
それぞれ導かれる０分岐した一方の水管２０には、通電
時に開状態にされる水電磁弁６が設けられ、熱交換器２
１には、水電磁弁６の通電時のみに水が供給される。給
水管２は、水電磁弁６の上流と下流とが、極細径のバイ
パス管７で連通され、水電磁弁６が閉状態のときにも微
少の水が熱交換器２１内を通過することにより、燃焼器
４０の不使用時の滞留水をなくす。The water supply pipe 2 is provided with a water quantity sensor 4 and an inlet water temperature thermistor 5, and after the water quantity and water temperature are detected, the supplied water is guided to each heat exchanger 11, 21 by a wood pipe 10 and a water pipe 20, respectively. A water solenoid valve 6 that is opened when energized is provided in one of the water pipes 20 that is branched into the water pipe 20.
1 is supplied with water only when the water solenoid valve 6 is energized. In the water supply pipe 2, the upstream and downstream sides of the water solenoid valve 6 are communicated with each other through an extremely small diameter bypass pipe 7, so that even when the water solenoid valve 6 is in the closed state, a small amount of water can pass through the heat exchanger 21. This eliminates accumulated water when the combustor 40 is not in use.
各熱交換器１１．２１の上流の各水管１０．２０には、
通過水量が一定水量以上になると接点を閉じる水流スイ
ッチ１２．２２と、自動水量制御切替装置１３．２３が
それぞれ設けられている。Each water pipe 10.20 upstream of each heat exchanger 11.21 includes:
A water flow switch 12.22 and an automatic water flow control switching device 13.23 are provided, respectively, which close the contacts when the amount of water passing through exceeds a certain water amount.
ここでは、水流スイッチ１２は２．１：Ｏ，’ｄ７分以
上の水量によって接点を閉じ、水量が２゜２±０５ρ／
分以下になると接点を開く。一方、水流スイッチ２２は
、水管中に水電磁弁６が設けられているため、作動水量
が水流スイッチ１２より少なく設定され、２，３±０．
４ｊ）／分以旧の水量によってそれぞれ接点を閉じ、１
．４Ｎ／分以下になると接点を開く。Here, the water flow switch 12 closes the contact when the water flow is 2.1:O,'d7 minutes or more, and the water flow is 2゜2±05ρ/
The contact opens when the temperature drops to less than 1 minute. On the other hand, since the water solenoid valve 6 is provided in the water pipe of the water flow switch 22, the operating water amount is set to be smaller than that of the water flow switch 12, and is set to 2,3±0.
4j)/minute or more, close the contacts respectively, and
．． The contact opens when it becomes less than 4N/min.
自動水量制御切替装置１３．２３は、水の温度を感知し
て通過する水量を自動的に制御する自動水量制御弁１４
．２４と、各自動水量制御弁１４．２４の上流と下流と
を連通したバイパス管１５．２５中に設けられた水量切
替弁１６．２６とを一体化したもので、各熱交換器１１
．２１への流入水星を調節する。なお、自動水量制御弁
１４．２４は、供給される水の温度が低い場合には開度
を小さくし、温度が高くなるにつれて開度を大きくする
。従って、自動水量制御切替装置１３．２３は、例えば
各水量切替弁１６．２６が閉状態の場合では、５°Ｃ〜
・２５℃の水温の変化に対応して、６− ｌ０ｆＪ／分
の水を供給するように調節し、各水量切替弁１６．２６
が開状態の場合では、５°Ｃ〜２５℃の水温の変化に対
応して、９〜１３ｐ／分の水を供給するように調節する
。The automatic water flow control switching device 13.23 is an automatic water flow control valve 14 that senses the temperature of water and automatically controls the amount of water passing through it.
．． 24 and a water volume switching valve 16.26 provided in a bypass pipe 15.25 that communicates the upstream and downstream of each automatic water volume control valve 14.24, and each heat exchanger 11
．． Adjusts the inflow Mercury into 21. Note that the automatic water flow control valve 14.24 decreases its opening degree when the temperature of the supplied water is low, and increases its opening degree as the temperature increases. Therefore, the automatic water flow control switching device 13.23 operates at a temperature of 5°C to
・In response to a change in water temperature of 25°C, each water volume switching valve 16.26 is adjusted to supply 6-10 fJ/min of water.
When it is in the open state, it is adjusted to supply water at a rate of 9 to 13 p/min in response to a change in water temperature of 5°C to 25°C.
各熱交換器１１．２１の下流の各水管１０．２０には、
加熱された湯水の温度を検知するための出湯温サーミス
タ１７．２７がそれぞれ備えられ、木管１０．２０はそ
の下流で給湯管２ａに合流される。Each water pipe 10.20 downstream of each heat exchanger 11.21 includes:
Outlet hot water temperature thermistors 17 and 27 for detecting the temperature of heated hot water are respectively provided, and the wood pipes 10 and 20 are joined to the hot water supply pipe 2a downstream thereof.
各燃焼器３０．４０内には、複数のリボン式のバーナ３
１．４１が設けられ、バーナ３１．４１には、各バーナ
３１．４１に対応して形成された噴出口を有するノズル
管３２．４２が備えられている。ノズル管３２．４２に
は、図示しない燃料供給源から燃料ガスを供給するガス
管８から分岐した燃料管３３．４３によって燃料ガスが
導かれる。各燃料管３３．４３には、元電磁弁３４．４
４、主電磁弁３５．４５、比例弁３６．４６がそれぞれ
備えられている。また、燃焼器３０．４．０には、燃焼
用空気を各バーナ３１．４１へ供給する送風機３７．４
７が備えられている。Within each combustor 30, 40 are a plurality of ribbon burners 3.
1.41 are provided, and each burner 31.41 is provided with a nozzle pipe 32.42 having a spout formed corresponding to each burner 31.41. Fuel gas is guided to the nozzle pipe 32.42 by a fuel pipe 33.43 branched from the gas pipe 8 that supplies fuel gas from a fuel supply source (not shown). Each fuel pipe 33.43 has a former solenoid valve 34.4.
4. A main solenoid valve 35.45 and a proportional valve 36.46 are provided, respectively. The combustor 30.4.0 also includes a blower 37.4 that supplies combustion air to each burner 31.41.
7 is provided.
さらに、燃焼器３０．４０内の各バーナ３１．４１の近
傍には、点火のためのスパーカ３８．４８と、炎を検知
するフレームロッド３９．４つがそれぞれ備えられてい
る。Furthermore, in the vicinity of each burner 31.41 in the combustor 30.40, a sparker 38.48 for ignition and four flame rods 39.4 for detecting flame are respectively provided.
制御回路５０と制御回路６０は、互いに独立して作動し
て燃焼器３０と燃焼器４０をそれぞれ独立して制御する
もので、第３図に示すとおり、それぞれシーケンス制御
部５１．６１と燃焼制御部５２．６２の機能部からなる
。The control circuit 50 and the control circuit 60 operate independently of each other to independently control the combustor 30 and the combustor 40, respectively, and as shown in FIG. It consists of 52 and 62 functional parts.
制ｔｎ回路５０において、シーケンス制御部５１は、水
流スイッチ１２によって水流が検知されると、所定のシ
ーケンスで点火制御を行い、送風機３７を作動させて燃
焼用空気をバーナ３１へ供給して、送風機３７の回転数
が所定回転数になると、スパーカ３８を作動させるとと
もに、元電磁弁３４および主電磁弁３５を開いて燃料ガ
スをバーナ３１へ供給する。In the control tn circuit 50, when the water flow is detected by the water flow switch 12, the sequence control unit 51 performs ignition control in a predetermined sequence, operates the blower 37 to supply combustion air to the burner 31, and operates the blower 37 to supply combustion air to the burner 31. When the rotation speed of the burner 37 reaches a predetermined rotation speed, the sparker 38 is activated, and the main solenoid valve 34 and the main solenoid valve 35 are opened to supply fuel gas to the burner 31 .
また、炎がフレームロッド３っで検知されると、スパー
カ３８の作動を停止し、炎がフレームロッド３っで検知
されなくなると失火を検知し、安全確保のために燃料管
３３に設けられた各電磁弁を閉じる６
燃焼制御部５２は、中継制御回路７０を介して伝送され
るコントローラ８０による設定温度と、出湯温サーミス
タ１７により検知される出湯温度に基づいて、送風機３
７および比例弁３６をそれぞれ制御し、燃焼器３０の燃
焼量を調節する。Further, when flame is detected by the flame rod 3, the operation of the sparker 38 is stopped, and when the flame is no longer detected by the flame rod 3, a misfire is detected. Close each electromagnetic valve 6 Combustion control unit 52 controls blower 3
7 and the proportional valve 36 to adjust the amount of combustion in the combustor 30.
制御回路６０は、制御回路５０と全く同様に、かつ制御
回路５０とは独立して燃焼器４０の制御を行うものであ
るため、説明を省く６
中継制御回路７０は、多量の温水が必要な場合に、熱交
換器１１と熱交換器２１および燃焼器３０と燃焼器４０
をともに使用するために、水１センサ４により検知され
る水量［、に応じて水電磁弁６を制御する。The control circuit 60 controls the combustor 40 in exactly the same way as the control circuit 50 and independently of the control circuit 50, so a description thereof will be omitted. In this case, the heat exchanger 11 and the heat exchanger 21 and the combustor 30 and the combustor 40
The water solenoid valve 6 is controlled according to the amount of water detected by the water 1 sensor 4.
ここでは、入水温サーミスタ５によって検知される入水
温度ＴＩＮとコントローラ８０によって設定される設定
温度Ｔ Ｓ ＲＴとに基づいて、第１図に示す回路によ
って、それぞれ次のとおり基準水量Ｌｏを決定し、水電
磁弁６を制御する。Here, based on the inlet water temperature TIN detected by the inlet water temperature thermistor 5 and the set temperature T S RT set by the controller 80, the reference water amount Lo is determined as follows by the circuit shown in FIG. Controls the water solenoid valve 6.
第１図において、７１は水量センサ４からのパルスをそ
のパルス数に応じた電圧に変換するＦ／■変換回路、７
２はＦ／Ｖ変換回路７１の出力電圧を反転増幅するオペ
アンプ、７３は入水温サーミスタ５の抵抗値に基づいて
決定される基準電圧よりオペアングア２の出力電圧が低
いときハイレベルの出力をする比１咬器、７４はオペア
ンプ７２の出力電圧が基準電圧より低いときハイレベル
の出力をする比較器、７５はコントローラ８０による設
定温度が５５℃以」のときローレベルの出力をする比較
器、７６は比較器７５の出力を反転するトランジスタ、
７７は比較器７４の出力とトランジスタ７６の出力を入
力するアンド回路、７８は比較３７３の出力とアンド回
路７７の出力に応じて水電磁弁６を駆動する駆動回路で
ある。In FIG. 1, 71 is an F/■ conversion circuit that converts the pulses from the water amount sensor 4 into a voltage according to the number of pulses;
2 is an operational amplifier that inverts and amplifies the output voltage of the F/V conversion circuit 71, and 73 is a ratio that outputs a high level when the output voltage of the operational amplifier 2 is lower than the reference voltage determined based on the resistance value of the inlet water temperature thermistor 5. 1, 74 is a comparator that outputs a high level when the output voltage of the operational amplifier 72 is lower than the reference voltage; 75 is a comparator that outputs a low level when the temperature set by the controller 80 is 55° C. or higher; 76; is a transistor that inverts the output of the comparator 75,
77 is an AND circuit that inputs the output of the comparator 74 and the output of the transistor 76, and 78 is a drive circuit that drives the water electromagnetic valve 6 according to the output of the comparator 373 and the output of the AND circuit 77.
ここで、比較器７３および比較）７ｉ７４は、それぞれ
入力弁別感度を低下させるとともに不感帯幅をもなぜる
ために、抵抗７３ａ、７４ａによってそれぞれ正帰還を
かけている。従って、各負入力端子７３ｂ、７４ｂへの
印加電圧が変化したとき、各比較器７３．７４がそれぞ
れローレベルに反転するための印加電圧は、ハイレベル
に反転するための印加電圧より低く設定され、水電磁弁
６が閉状態に制御されるための基準水ｊｔｌ１、は、水
電磁弁６が開状態に制御されるための基準水Ｍ、Ｌｏよ
りΔＬ（１，２ｆｌ１分）だけ少なく設定され、Ｌ ｒ
＝ Ｌ ｏ−ΔＬ
の関係を有する。Here, the comparator 73 and the comparator 7i74 each apply positive feedback through resistors 73a and 74a in order to reduce the input discrimination sensitivity and increase the dead band width. Therefore, when the voltage applied to each negative input terminal 73b, 74b changes, the applied voltage for inverting each comparator 73, 74 to a low level is set lower than the applied voltage for inverting each comparator to a high level. , the reference water jtl1 for controlling the water solenoid valve 6 to be in the closed state is set to be less than the reference water M, Lo for controlling the water solenoid valve 6 to be in the open state by ΔL (1,2fl1 min). , L r
=Lo−ΔL.
なお、比較器７５にも抵抗７５ａによって正帰還がかけ
られていて、同様に異なった設定温度によってそれぞれ
出力を反転する。Incidentally, the comparator 75 is also subjected to positive feedback by a resistor 75a, and its output is similarly inverted depending on different set temperatures.
設定温度ＴＳＩ！□が５５℃以」・の場合には、入水温
度ＴＩＮとは関係なく、基準水呈し。は７．０±１．０
ＩＱ／分とされ、基準水量１１、は５．８；：０゜８１
０／分とされる。Set temperature TSI! If □ is 55℃ or higher, the standard water is used regardless of the water input temperature TIN. is 7.0±1.0
IQ/min, standard water volume 11, is 5.8;: 0°81
0/min.
設定温度ｒｓｇ、ｒが５５℃未満の場合には、第４図に
示すとおり、入水温度１゛、に応じて水電磁弁６を切り
替えるための基準水ＪｔＬｏおよび基準水量Ｉ、ｌは、
それぞれ実線Ａおよび破線Ｂに示されるとおり、それぞ
れ次のとおり決定される。When the set temperature rsg, r is less than 55°C, as shown in FIG.
As shown by solid line A and broken line B, respectively, they are determined as follows.
入水温度Ｔ１Ｎが１５°Ｃ未満では、基準水ｆｆ１Ｌ。When the inlet water temperature T1N is less than 15°C, the reference water ff1L.
は−律に７．０±１．０．Ｉｌ／分とされ、基準水量し
□は５．８±０．８ｆ）／分とされる。is 7.0±1.0. Il/min, and the standard water amount □ is 5.8±0.8 f)/min.
入水温度ＴＩＮが１５°Ｃ以上２５°Ｃ未満の場合には
、基準水ＩＬＯは次の式で近似的に示される関係で、入
水温度ＴＩＮに基づいて決定される。When the inlet water temperature TIN is 15°C or more and less than 25°C, the reference water ILO is determined based on the inlet water temperature TIN in a relationship approximately expressed by the following equation.
Ｌｏ ＝０．１６ＸＴＩＮ＋４．６±１．０また、基準
水散Ｉ、１は、
Ｌｌ ＝０．１６ＸＴＩＮ＋３．４±０．８の関係で入
水温度ＴＩＮＧ′ニー基づいて決定される。Lo =0.16XTIN+4.6±1.0 Also, the reference water spray I,1 is determined based on the water inlet temperature TING' knee with the relationship Ll =0.16XTIN+3.4±0.8.
入水温度ＴＩＮが２５°Ｃ以上の場合には、基準水量Ｉ
５゜は−律に８．６±１．０１１／分とされ、基準水Ｊ
ｔ Ｌ ｔは７．４±０．８９／分とされる。If the inlet water temperature TIN is 25°C or higher, the standard water amount I
5° is generally 8.6±1.011/min, and the reference water J
t L t is 7.4±0.89/min.
また、中継制御回路７０は、コントローラ８０による設
定温度Ｔ ５ｌｌＴが高く、５５℃以上の場合には、水
電磁弁６が開状態の場合に限って、水量切替弁１６．２
６を閉状態にして、各熱交換器１１．２１を通過する水
量を減少させ、水を確実に昇温させる。この場合、水電
磁弁６が開く前に水量切替弁１６が閉じると、水量が基
準水量■、。より増えなくなるため、検知される水ＭＬ
が基準水量Ｉ、。以」・になるようにするために、水量
切替弁１６は、水電磁弁６が開いた後に閑じられる。In addition, when the set temperature T5llT by the controller 80 is high and is 55° C. or higher, the relay control circuit 70 controls the water amount switching valve 16.2 only when the water solenoid valve 6 is in the open state.
6 is closed to reduce the amount of water passing through each heat exchanger 11.21 and ensure that the water is heated. In this case, if the water amount switching valve 16 closes before the water electromagnetic valve 6 opens, the water amount becomes the reference water amount ■. Water ML detected because it stops increasing
is the standard water amount I. In order to achieve this, the water amount switching valve 16 is turned off after the water solenoid valve 6 is opened.
さらに、中継制御回路７０は、コントローラ８０による
設定温度’ｒｓＩ１．ｒの信号を各制御回路５０．６０
へ伝送する。Further, the relay control circuit 70 controls the set temperature 'rsI1.' by the controller 80. r signal to each control circuit 50.60
Transmit to.
以上の構成からなる併設型ガス給湯器１は、次のとおり
作動する。The attached gas water heater 1 having the above configuration operates as follows.
使用者が図示しない水栓を開くと、給水管２内に水が供
給される。このとき、水電磁弁６は閉じられていて、流
入した水は水管１０内のみに流入する。水の流入が検知
されると、水量切替弁１６が開状態にされ、水１センサ
４と入水温サーミスタ５により水量りと入水温度ＴＩＮ
がそれぞれ検知される。以下、それぞれ上記のとおり決
定された基準水量Ｉ７゜に応じて水電磁弁６が制御され
る。When a user opens a faucet (not shown), water is supplied into the water supply pipe 2. At this time, the water electromagnetic valve 6 is closed, and the inflowing water flows only into the water pipe 10. When the inflow of water is detected, the water amount switching valve 16 is opened, and the water level and inlet temperature TIN are determined by the water 1 sensor 4 and the inlet water temperature thermistor 5.
are detected respectively. Thereafter, the water electromagnetic valve 6 is controlled according to the reference water amount I7° determined as described above.
ア）水量センサ４によって検知される水量りが基準水ｆ
ｉｔ、１．未満のときには、水電磁弁６が開かれず、水
は木管１０から熱交換器１１のみへ供給される。従って
、水流スイッチ１２のみが閉じ、制御回路５０が燃焼制
御を開始し、所定のシーケンスで燃焼器３０の燃焼を開
始し、流入した水は熱交換器１１のみによつ゛Ｃ加熱さ
れ、給湯ｇ２ａから流出する。その後はコントローラ８
０や各センサ等の信号に基づいて燃焼量が調節される。a) The water level detected by the water level sensor 4 is the reference water f
it, 1. When it is below, the water solenoid valve 6 is not opened and water is supplied from the wood pipe 10 only to the heat exchanger 11. Therefore, only the water flow switch 12 is closed, the control circuit 50 starts combustion control, and the combustion of the combustor 30 is started in a predetermined sequence. flows out from. Then controller 8
The amount of combustion is adjusted based on signals from 0 and each sensor.
イ）水量センサ４によって検知される水量１．が基準水
ｉ”＝−ｏ以上のときには、水電磁弁６が開かれ、給水
管２へ流入した水は、水管１０と水管２０に分流して供
給される。すると、水流スイッチ２２も閉じ、制御回路
５０と制御回路６０はともに作動して燃焼制御を開始す
るため、燃焼器４０も燃焼を開始し、流入した水は、熱
交換器１１と熱交換器２１によってそれぞれ加熱され、
合流して給湯管２ａから流出する。b) Water amount detected by water amount sensor 4 1. When the water is equal to or higher than the reference water i"=-o, the water solenoid valve 6 is opened, and the water flowing into the water supply pipe 2 is divided and supplied to the water pipe 10 and the water pipe 20. Then, the water flow switch 22 is also closed, Since both the control circuit 50 and the control circuit 60 operate to start combustion control, the combustor 40 also starts combustion, and the inflow water is heated by the heat exchanger 11 and the heat exchanger 21, respectively.
The water joins together and flows out from the hot water pipe 2a.
検知される水ＭＬが基準水ｉＬ。未満で、基準水量Ｌ７
１以上のときには、水電磁弁６は、閉じられない。The detected water ML is the reference water iL. less than the standard water amount L7
When the number is 1 or more, the water solenoid valve 6 is not closed.
従って、各燃焼器３０．４０が安定して作動するため、
給湯管２ａから流出する湯水の温度を安定させることが
できる。Therefore, in order for each combustor 30.40 to operate stably,
The temperature of the hot water flowing out from the hot water supply pipe 2a can be stabilized.
検知される水量りが、基準水ｉＬｓ以下になると、水電
磁弁６が閉じられる。When the detected water level becomes equal to or less than the reference water iLs, the water solenoid valve 6 is closed.
以上のとおり、本発明では、供給される水を分流させる
ための水電磁弁６の制御において、開状態から閉状態へ
変更する場合と、閉状態から開状態へ変更する場合とで
は、制御の基準水量が異なるため、多少の検知水量の変
化があっても、−旦開状態にされた水電磁弁はそのまま
開状態を維持される。従って、流出する湯水の温度を安
定させることができる。As described above, in the present invention, in controlling the water electromagnetic valve 6 for dividing supplied water, the control is different when changing from an open state to a closed state and when changing from a closed state to an open state. Since the reference water volume is different, even if there is a slight change in the detected water volume, the water solenoid valve that is previously opened will remain open. Therefore, the temperature of the hot water flowing out can be stabilized.
以上の実施例では、熱交換器１１、燃焼器３０および制
御回路５０等によって構成される給湯器の出湯能力と、
熱交換器２１、燃焼器４０および制御回路６０等によっ
て構成される給湯器の出湯能力とが同等であることを前
提にしたものであるが、出湯能力の異なる２つの給湯器
を設け、使用給湯量が少ない場合には出湯ｆｆｆｉ力の
小さな給湯器のみ、を作動させ、使用給湯量が多くなっ
た場合に、出湯能力の大きな給湯器も作動させるように
するようにしてもよい、この場合には、特に使用給湯量
が少ない場合において、燃焼器を確実に作動させる制御
が容易になるため、さらに使いやすくすることができる
。In the above embodiment, the hot water output capacity of the water heater configured by the heat exchanger 11, the combustor 30, the control circuit 50, etc.
Although this is based on the premise that the hot water output capacities of the water heaters composed of the heat exchanger 21, combustor 40, control circuit 60, etc. are the same, two water heaters with different hot water output capacities are installed, and the hot water used is When the amount of hot water is small, only the water heater with a small output power is operated, and when the amount of hot water used increases, the water heater with a large output capacity may also be operated.In this case, Especially when the amount of hot water used is small, it becomes easier to control the combustor to operate reliably, making it even easier to use.
本実施例では、ガス燃焼器を備えた併設型給湯器につい
て説明したが、他の燃料を使用するものや、電気ヒータ
を加熱源とするものでもよい。In this embodiment, an attached water heater equipped with a gas combustor has been described, but a water heater using other fuels or an electric heater as the heat source may be used.
第１図は本発明の実施例を示す併設型ガス給湯器の中継
制御回路における水量制御にががる基本回路を示す部分
回路図、第２図は本実施例の併設型ガス給湯器の概略を
示す構成図、第３図は本実施例の併設型ガス給湯器にお
ける制御系統を示すブロック図、第４図は中継制御回路
の水量制御の一部を示す制御特性図である。
図中、４・・・水量センサ（水量検知手段）、６・・・
水電磁弁（遮断用電磁弁）、７０・・・中継制御回路（
水量制御装置ｌり。Fig. 1 is a partial circuit diagram showing the basic circuit for water flow control in the relay control circuit of a combined gas water heater according to an embodiment of the present invention, and Fig. 2 is a schematic diagram of the combined gas water heater according to the present embodiment. FIG. 3 is a block diagram showing the control system in the annexed gas water heater of this embodiment, and FIG. 4 is a control characteristic diagram showing part of the water flow control of the relay control circuit. In the figure, 4... water amount sensor (water amount detection means), 6...
Water solenoid valve (shutoff solenoid valve), 70...Relay control circuit (
Water flow control device.
Claims (1)
器と、 該熱交換器のうち少なくとも１つへ水を導く流入路中に
設けられた遮断用電磁弁と、 前記水供給路に供給される水量を検知する水量検知手段
とを備え、 前記水量検知手段により検知される水量に基づいて前記
遮断用電磁弁を開閉する併設型給湯器の水量制御装置に
おいて、 前記遮断用電磁弁を開状態にするための第１の基準水量
と、前記遮断用電磁弁を閉状態にするための第２の基準
水量とを設け、前記第２の基準水量は前記第１の基準水
量より少なく設定されたことを特徴とする併設型給湯器
の水量制御装置。[Claims] 1) A plurality of heat exchangers connected in parallel in a water supply path, and a blocking electromagnetic device provided in an inlet path that leads water to at least one of the heat exchangers. A water flow control device for an attached water heater, comprising: a valve; and a water amount detection means for detecting the amount of water supplied to the water supply path, and opens and closes the shutoff solenoid valve based on the amount of water detected by the water amount detection means. A first reference water amount for opening the cut-off solenoid valve and a second reference water amount for putting the cut-off solenoid valve in a closed state are provided, and the second reference water amount is the A water flow control device for an attached water heater, characterized in that the water flow is set to be lower than a first reference water flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19030688A JPH0240447A (en) | 1988-07-29 | 1988-07-29 | Flow controller for multi-unit type hot water supply apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19030688A JPH0240447A (en) | 1988-07-29 | 1988-07-29 | Flow controller for multi-unit type hot water supply apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0240447A true JPH0240447A (en) | 1990-02-09 |
Family
ID=16255967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19030688A Pending JPH0240447A (en) | 1988-07-29 | 1988-07-29 | Flow controller for multi-unit type hot water supply apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0240447A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06281249A (en) * | 1992-01-07 | 1994-10-07 | Noritz Corp | Parallel type hot-water device |
| JP2013501208A (en) * | 2010-10-21 | 2013-01-10 | キョンドン ネットワーク カンパニー リミテッド | Control method for parallel operation of multiple water heaters |
| CN104913512A (en) * | 2015-06-30 | 2015-09-16 | 厦门阿玛苏电子卫浴有限公司 | Control method of instant-heating water heater based on parallel structure of multiple heating cups |
| CN105783240A (en) * | 2014-12-26 | 2016-07-20 | 林内株式会社 | Immediate hot water supply system |
-
1988
- 1988-07-29 JP JP19030688A patent/JPH0240447A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06281249A (en) * | 1992-01-07 | 1994-10-07 | Noritz Corp | Parallel type hot-water device |
| JP2013501208A (en) * | 2010-10-21 | 2013-01-10 | キョンドン ネットワーク カンパニー リミテッド | Control method for parallel operation of multiple water heaters |
| CN105783240A (en) * | 2014-12-26 | 2016-07-20 | 林内株式会社 | Immediate hot water supply system |
| CN104913512A (en) * | 2015-06-30 | 2015-09-16 | 厦门阿玛苏电子卫浴有限公司 | Control method of instant-heating water heater based on parallel structure of multiple heating cups |
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