JPS62245047A - Instantaneous hot water maker - Google Patents

Abstract

PURPOSE:To make the start-up of hot water supply temperature fast and eliminate variation in the hot water supply temperature when a hot water supply valve is opened or closed by conducting temperature sensing and supplying a constant amount of fuel which matches a load amount by selection of an usage mode. CONSTITUTION:When a hot water supply cock is opened, water flows into a heat exchanger 15 and a water flow switch is turned ON to pen a solenoid valve 14, igniting a burner 11 and heating the heat exchanger 15. In this first hot water discharge, the temperature of the water flowing into a hot maker is assumed to be highest and a controller 9 operates a proportional control valve 13 following an instruction from a usage mode switch 21 on an operation panel 20. In detecting the temperature of the intake water the hot water supply cock 22 is opened to let the water flow for a few seconds, and then its temperature is detected. The temperature thus detected is input into the memory of the controller 19. This stored intake water temperature is used for setting a load heat quantity when the device is used next time, and a valve opening which matches the load is given as an instruction to the proportional control valve 13.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、家庭用の給湯設備の熱源となる瞬間湯沸器に
関−するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an instantaneous water heater that serves as a heat source for domestic hot water supply equipment.

従来の技術 近年、瞬間湯沸器は、使い勝手の向上を目的として、給
湯負向串が変化しても給湯温度が常に一定になるように
比例制御弁によりバーナの燃料をコントロールしていた
。2. Description of the Related Art In recent years, instantaneous water heaters have used proportional control valves to control the fuel in the burner so that the hot water temperature remains constant even when the hot water supply direction changes, with the aim of improving usability.

第３図は従来の瞬間湯沸器の全体構成の一例を示すもの
であり、湯沸器本体は熱交換器１、給湯温度を検出する
温度検出器２、熱交換器１内の水が流れたかどうかを検
出する流水スイッチ３、バーナ４へ供給する燃料をコン
トロールする比例制御弁５、燃料管の開閉を行う電磁弁
６、および前記１〜６を制御するコントローラ７とを猫
え、操作盤８で制御指示を与えるようになされている。Figure 3 shows an example of the overall configuration of a conventional instantaneous water heater. The operation panel includes a running water switch 3 that detects whether or not the water is blown, a proportional control valve 5 that controls the fuel supplied to the burner 4, a solenoid valve 6 that opens and closes the fuel pipe, and a controller 7 that controls the above 1 to 6. 8 to give control instructions.

このように構成された瞬間湯沸器において、操作盤８に
ある温度調節目盛の設定温度に対して給湯出口温度がそ
の温度になるように温度検出器２が監視し、設定温度よ
り温度検出器２の温度が乙くなるとコントローラー７を
通じて比例制御弁５を絞るという動作をさせ、逆に設定
温度より低いと比例制御弁５を間けるという１１作をさ
せて、バーナ４の燃焼量を制御し、給湯温度を設定温度
に近づけていた。In the instantaneous water heater configured in this way, the temperature detector 2 monitors the hot water outlet temperature so that it reaches the set temperature on the temperature control scale on the operation panel 8, and When the temperature of the burner 2 reaches B, the proportional control valve 5 is throttled down through the controller 7, and conversely, when the temperature is lower than the set temperature, the proportional control valve 5 is closed. , the hot water temperature was kept close to the set temperature.

発明が解決しようとする問題魚 上記従来組成によれば、設定温［すに近づけるために制
御方法として積分回路を通して比例制御弁５をコントロ
ールしている。また給湯使用時に負荷吊が変化したこと
に対応するため微分回路を通している。いづれにしても
設定温度を維持するために積分、微分回路が使われるこ
とにより、第４図の（ａ）に示１ように給湯栓９を開い
て給湯温度が設定温度になるのに時間がかかる。また一
時、給湯栓９を閉じて再出湯したときに、温度検出器２
の部分の水温がまだ高く、設定温度との差が少いため比
例制御弁５を絞ろうとし、温湿低下を生じさせる。温度
が下がり過ぎると逆に設定温度に近づけるために急激に
比例１１１１ＪＩＩｌ弁５を開けて温度高めようとする
。そのため給湯温度は第４図の（ｂ）のように下がった
り上がったりするので、人の肌が直接触れて使用するよ
うなシャワーや台所の洗い物などは不快感を感じさせる
という問題点があった。Problems to be Solved by the Invention According to the conventional composition described above, the proportional control valve 5 is controlled through an integral circuit as a control method in order to bring the temperature close to the set temperature. In addition, in order to respond to changes in the load when hot water is being used, a differential circuit is used. In any case, since the integral and differential circuits are used to maintain the set temperature, it takes time for the hot water supply tap 9 to reach the set temperature when the hot water tap 9 is opened, as shown in FIG. 4(a). It takes. In addition, when the hot water tap 9 was temporarily closed and the hot water was turned on again, the temperature sensor 2
Since the water temperature in the area is still high and the difference from the set temperature is small, the proportional control valve 5 tries to throttle, causing a drop in temperature and humidity. If the temperature drops too much, the proportional 1111JIIl valve 5 is suddenly opened to raise the temperature in order to bring it closer to the set temperature. As a result, the hot water temperature drops and rises as shown in Figure 4 (b), which poses a problem in that people feel uncomfortable when taking a shower or washing dishes in the kitchen, which come in direct contact with their skin.

本発明は上記問題点を解消するもので、給湯温度の立上
りを与１くし、かつシｔｙワーおよび台所、洗面使用時
の給湯栓開閉操作後の給湯ｉ！度変化をなくした瞬間湯
沸器を提供するものである。The present invention solves the above-mentioned problems by reducing the temperature rise of hot water and reducing the temperature of hot water after opening and closing the hot water faucet when using the room, kitchen, and washroom. To provide an instantaneous water heater that eliminates temperature changes.

問題点を解決するための手段 上記問題点を解決するために本発明は、使用モードを選
択指示可能なスイッチを設けた操作盤と、入水温度と出
口温度を検出する温度検出器と流水の静的を検出する流
水スイッチとを設けた熱交換器と、燃料の供給を可変す
る制御弁を設けた加熱装置と、前記出口温度と前記入水
温度と前記使用モードとを指標としてあらかじめ設定さ
れた所定開度に前記制御弁を作動させるコントローラと
で構成したものである。Means for Solving the Problems In order to solve the above problems, the present invention provides an operation panel equipped with a switch that can select and instruct the use mode, a temperature sensor that detects the inlet water temperature and the outlet temperature, and a still water flow. A heat exchanger equipped with a water flow switch for detecting a target, a heating device equipped with a control valve for varying the supply of fuel, and a heat exchanger equipped with a water flow switch that detects a target, a heating device equipped with a control valve that varies the supply of fuel, and a heating device that is set in advance using the outlet temperature, the water input temperature, and the use mode as indicators. The controller is configured to operate the control valve to a predetermined opening degree.

作用 上記構成により、あらかじめ給湯の使用負荷量を使用モ
ードの選択と入水温度の検出によって計粋しておいて、
流水スイッチの作！１ｌＪ４Ｉ一定時間後に入水温度を
検出して記憶し、次回流水スイッチが作動したときに前
回の記憶入水温度とその時の操作盤の使用モードのみに
よって燃料をコントロールし、負荷価に見合った燃料を
一定量供給し、出口温度の検出器は沸騰を防止するハイ
リミットの役目をザる。Effect With the above configuration, the usage load of hot water supply is calculated in advance by selecting the usage mode and detecting the incoming water temperature.
Making a running water switch! 1lJ4I Detects and stores the inlet water temperature after a certain period of time, and the next time the flow water switch is activated, the fuel is controlled only based on the previous memorized inlet water temperature and the operating mode of the operation panel at that time, and a fixed amount of fuel is delivered in accordance with the load value. The supply and outlet temperature detectors act as high limits to prevent boiling.

実施例 以下本発明の一実施例のｇ１間渇沸器について、図面に
１Ｊづいて説明する。第１図において、バーナ１１に連
結された燃料供給管１２には、燃料の供給量を可変する
比例制御弁１３とｌｌｉ磁弁１４とが介装されてＪｊす
、バーナ１１により熱供給される熱交換器１５の流入口
には入水温度検出器１６と流水の静動を検出する流水ス
イッチ１７が設けられ、流出口には出口温度検出２１！
１８が設けられており、これら入水温度検出器１６と流
水スイッチ１７と出口温度検出器１８と比例制御弁１３
および電磁弁１４はコントローラ１９に接続されている
。コントローラ１９には、比例制御弁１３の開度を、あ
らかじめ入水温度と使用モード別の給湯量とから所定温
度の給湯を行うに必要な負仙熱聞を計わして設定しであ
る。操作１１２Ｇには、コントローラ１９に使用モード
を指示する使用モードスイッチ２１が設けられており、
運転スイッチの２１ａの他に洗面、台所で使用する温度
の澗モードのスイッチ２１ｂとシャワー、風呂で使用す
る温度の瀉モードのスイッチ２１ｃがある。EXAMPLE Hereinafter, a g1 water heater according to an example of the present invention will be explained with reference to the drawing. In FIG. 1, a fuel supply pipe 12 connected to a burner 11 is provided with a proportional control valve 13 and a magnetic valve 14 for varying the amount of fuel supplied.Heat is supplied by the burner 11. The inlet of the heat exchanger 15 is provided with an inlet water temperature detector 16 and a flowing water switch 17 for detecting static motion of the flowing water, and the outlet is provided with an outlet temperature detector 21!
18 are provided, and these are an inlet water temperature detector 16, a flowing water switch 17, an outlet temperature detector 18, and a proportional control valve 13.
And the solenoid valve 14 is connected to the controller 19. The opening degree of the proportional control valve 13 is set in the controller 19 by calculating in advance the negative temperature required to supply hot water at a predetermined temperature based on the incoming water temperature and the amount of hot water supplied for each mode of use. The operation 112G is provided with a usage mode switch 21 that instructs the controller 19 to select a usage mode.
In addition to the operation switch 21a, there is a switch 21b for setting the temperature in the sink and kitchen, and a switch 21c for setting the temperature in the shower and bath.

以下、上記構成における作用について説明する。Hereinafter, the effects of the above configuration will be explained.

まず操作１２０の運転スイッチ２１ａを人にし、コント
ローラ１９をスタンバイさせる。給湯栓２２を開くと熱
交換ＷＡ１５内に水が流れ、流水スイッチ１７がオンさ
れて電磁弁１４が開になり、バーナ１１を点火させて熱
交換器１５を加熱する。この初回の出湯時には、安全の
ために入水温度は最も高いものとして操作！！１１１２
０の使用モードスイッチ２１からの指示と合わせて、コ
ントローラ１９が比例制徐ｕ弁１３を作動させる。入水
温度検出については、真の温度を検出するために、給湯
栓２２を聞いて、数秒間通水俊に検出づる。そして検出
した湿度は次回の給湯使用時のためにコントローラ１９
の記憶回路に記１！にさせておく。そうして記憶した入
水温度を次回給湯使用時に負荷熱量設定に使用し、負荷
に見合う開度を比例制御弁１３に指示する。ここで負荷
設定の一例を説明する入水温度は大きく３段階に分ける
。First, the operation switch 21a of the operation 120 is set to human, and the controller 19 is put on standby. When the hot water tap 22 is opened, water flows into the heat exchange WA 15, the water flow switch 17 is turned on, the solenoid valve 14 is opened, and the burner 11 is ignited to heat the heat exchanger 15. When pouring hot water for the first time, set the water temperature to be the highest for safety reasons! ! 1112
In conjunction with the instruction from the use mode switch 21 of 0, the controller 19 operates the proportional control U valve 13. Regarding the temperature detection of incoming water, in order to detect the true temperature, listen to the hot water tap 22 and detect the water flowing rapidly for several seconds. The detected humidity is stored in the controller 19 for the next time when hot water is used.
Record 1 in the memory circuit of ! Let it be. The stored incoming water temperature is used to set the load heat amount the next time hot water supply is used, and the proportional control valve 13 is instructed to open the opening degree commensurate with the load. Here, an example of load setting will be explained.The inlet water temperature is roughly divided into three stages.

０〜９℃、１０〜１９℃、２０〜２９℃としレンター値
をそれぞれ、５℃、１５℃、１５℃と゛りる。台所、洗
面の給湯量は５ρ／分、シ↑・ワー、風呂、給湯は１０
Ω／分とし、その温度は４０℃とする。そのときの負荷
量は 第１表 第１表のようになる。これを・６つと細かく別けても良
いが、この程度であればＡ−ルシーズン対応は十分であ
る。燃料供給量は一定なので常に一定の出力となり給湯
温度は入水温度の段室範囲内で成り行きとなる。それに
ついても混合栓を使い給水、給湯量を調節してやれば希
望の給′６Ａ温度が可能となる。給湯温廓と時間の関係
を第２図のグラフに承り。従来のものを示す第４図と較
べてあきらかなように、出湯初期から所定温度に達する
までの立ち上り時間が少なく、所定温度付近での変動が
ほとんどない。これは出湯初期から入水温度と使用モー
ドに対応１Ｊる一定熱吊を供給するために可能となった
ものである。次に潟湘器に供給する給水量が突然変化し
たとき、特に給水量が少くなったときは、給湯温度が上
冒し危険となるので、そのどきは熱交換器１５の出口側
に設【プた温度検出器１８で検出される温度がある温度
以上になったら燃料の供給を電磁弁１４でカットし、あ
る温度以下になったら復帰させる。なお給水量を一定に
保つために瞬間湯沸器の入口側にガバナを設ければ更に
温度変化が少くなる。The temperatures were 0 to 9°C, 10 to 19°C, and 20 to 29°C, and the Renter values were 5°C, 15°C, and 15°C, respectively. The amount of hot water for the kitchen and washroom is 5ρ/min, and for the shower, bath, and hot water is 10ρ/min.
Ω/min, and the temperature is 40°C. The load amount at that time is as shown in Table 1. This may be divided into 6 parts, but this level is sufficient for the A-le season. Since the amount of fuel supplied is constant, the output is always constant and the hot water supply temperature remains within the range of the inlet water temperature in the tray chamber. In this case, if you use a mixing faucet to adjust the amount of water and hot water supplied, you can achieve the desired temperature of 6A. The relationship between hot water supply temperature and time is shown in the graph in Figure 2. As is clear from comparison with FIG. 4, which shows the conventional type, the rising time from the initial stage of hot water tap until reaching the predetermined temperature is short, and there is almost no fluctuation around the predetermined temperature. This was made possible by providing a constant 1J heat load that corresponds to the incoming water temperature and usage mode from the beginning of the tap. Next, when the amount of water supplied to the lagooner suddenly changes, especially when the amount of water supplied becomes small, the temperature of the hot water may rise and become dangerous. When the temperature detected by the temperature detector 18 exceeds a certain temperature, the electromagnetic valve 14 cuts off the fuel supply, and when the temperature falls below the certain temperature, the fuel supply is restored. If a governor is installed on the inlet side of the instantaneous water heater to keep the amount of water supplied constant, temperature changes will be further reduced.

発明の効果 以上延べたごとく本発明によれば、入水温［αの検出と
使用モードの選択による負荷量に見合う燃料を一定供給
することにより、給湯温度の立上りを♀くし、給湯栓開
閉時の給湯温度変化をなくすることができる。又制御回
路も面木なもので済みコストダウンを図れる。Effects of the Invention As described above, according to the present invention, by detecting the incoming water temperature [α] and supplying a constant amount of fuel commensurate with the load amount by selecting the usage mode, the rise in hot water temperature is reduced to Changes in hot water temperature can be eliminated. In addition, the control circuit can also be a simple one, reducing costs.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の第１の実施例における瞬間湯沸器の全
体構成図、第２図は第１の実施例にｊメける給湯温度の
過渡特性を示す図、第３図は従来の瞬間湯沸器の全体構
成図、第４図は従来の瞬間潮洲器の給湯温度の過渡特性
を示す図である。 １３・・・比例制御弁、１５・・・熱交換器、１６・・
・入水温度検出器、１７・・・流水スイッチ、１８・・
・出口温度検出器、１９・：］ントローラ、２０−・・
操作盤、２１ａ、２１ｂ、２１ｃ　−・・使用モードス
イッチ 代理人　　　森　　木　　義　　弘 第１図 第２図 ０　　　　−８：＋悶 第３図Fig. 1 is an overall configuration diagram of an instantaneous water heater according to a first embodiment of the present invention, Fig. 2 is a diagram showing transient characteristics of hot water supply temperature in accordance with the first embodiment, and Fig. 3 is a diagram showing a conventional instantaneous water heater. FIG. 4, which is an overall configuration diagram of an instantaneous water heater, is a diagram showing transient characteristics of hot water supply temperature of a conventional instantaneous water heater. 13... Proportional control valve, 15... Heat exchanger, 16...
・Water temperature detector, 17...Flowing water switch, 18...
・Outlet temperature detector, 19.:] Controller, 20-...
Operation panel, 21a, 21b, 21c ---Usage mode switch agent Yoshihiro Moriki Figure 1 Figure 2 0 -8: + Agony Figure 3

Claims (1)

【特許請求の範囲】[Claims] １、使用モードを選択指示可能なスイッチを設けた操作
盤と、入水温度と出口温度を検出する温度検出器と流水
の静動を検出する流水スイッチを設けた熱交換器と、燃
料の供給を可変する制御弁を設けた加熱装置と、前記出
口温度と前記入水温度と前記使用モードとを指標として
あらかじめ設定された所定開度に前記制御弁を作動させ
るコントローラとを備えた瞬間湯沸器。1. An operation panel equipped with a switch that allows you to select and instruct the usage mode, a heat exchanger equipped with a temperature detector that detects the inlet water temperature and outlet temperature, a running water switch that detects the static movement of running water, and a fuel supply. An instantaneous water heater comprising: a heating device provided with a variable control valve; and a controller that operates the control valve to a predetermined opening degree set in advance using the outlet temperature, the water input temperature, and the usage mode as indicators. .