JPH0391650A - Hot water feeding device - Google Patents

Hot water feeding device

Info

Publication number
JPH0391650A
JPH0391650A JP22689189A JP22689189A JPH0391650A JP H0391650 A JPH0391650 A JP H0391650A JP 22689189 A JP22689189 A JP 22689189A JP 22689189 A JP22689189 A JP 22689189A JP H0391650 A JPH0391650 A JP H0391650A
Authority
JP
Japan
Prior art keywords
temperature
hot water
water
burner
water supply
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.)
Granted
Application number
JP22689189A
Other languages
Japanese (ja)
Other versions
JP2554749B2 (en
Inventor
Shuzo Ono
小野 修三
Toshiaki Aihara
粟飯原 年明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harman Co Ltd
Original Assignee
Harman Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Harman Co Ltd filed Critical Harman Co Ltd
Priority to JP1226891A priority Critical patent/JP2554749B2/en
Publication of JPH0391650A publication Critical patent/JPH0391650A/en
Application granted granted Critical
Publication of JP2554749B2 publication Critical patent/JP2554749B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)

Abstract

PURPOSE:To enable an accurate temperature control to be attained by a method wherein in the case that a sensed temperature of a temperature sensor is lower than a set temperature for controlling a burner, a water feeding capability is changed over to a high water feeding capability and in turn when the sensed temperature is higher than a set temperature, it is changed over to a lower water feeding capability. CONSTITUTION:In the case that a sensed temperature of a temperature sensor S4 is higher than a set temperature for controlling a burner, a burner 3 is diminished and at the same time hot water circulated and flowing by an auxiliary heat source 22 is kept at a set temperature for keeping the temperature. In the case that the sensed temperature of the temperature sensor S4 is lower than the set temperature for controlling the burner, a circulating pump 24 is constructed to increase a water feeding power and in turn in the case that it is higher than the set temperature for controlling the burner, the water feeding power is changed over to a low capability. Accordingly, a mean temperature of hot water within the circulating passage can be accurately sensed with a few number of temperature sensors for example by one temperature sensor. With such an arrangement, the hot water within the circulating passage can be kept stable at a set temperature for keeping its temperature.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、即時給湯が可能な給湯装置に係わるもので、
詳しくは、バーナにて加熱されろ水加熱用熱交換器への
給水路と前記水加熱用熱交換器から給湯栓へ延設された
給湯路との間に戻り湯路が介装され、前記給湯路の湯を
前記戻り湯路を通して前記給水路へ戻すように循環流動
させる循環ポンプが設けられ、前記循環ポンプによって
循環流動される湯を加熱する補助熱源と、前記給水路と
前記給湯路と前記戻り湯路で形成される循環路の湯の温
度を検出する温度センサとが設けられ、前記温度センサ
の検出温度が、保温用の設定温度よりも設定値低い温度
あるいは前記保温用の設定温度と同じ温度として設定さ
れたバーナ制御用の設定温度より低い場合には、前記バ
ーナを着火して循環流動される湯を加熱し、且つ、前記
温度センサの検出温度が前記バーナ制御用の設定温度以
上の場合には前記バーナを消火するとともに、前記補助
熱源によって前記循環流動される湯を前記保温用の設定
温度に維持するように構成されている給湯装置に関する
[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a water heater that can instantly supply hot water.
Specifically, a return hot water passage is interposed between a water supply passage heated by a burner to a heat exchanger for heating filtrate and a hot water supply passage extending from the water heating heat exchanger to a hot water tap; A circulation pump is provided that circulates hot water in the hot water supply path so as to return it to the water supply channel through the return hot water channel, and an auxiliary heat source that heats the hot water circulated by the circulation pump; A temperature sensor is provided to detect the temperature of the hot water in the circulation path formed by the return hot water path, and the temperature detected by the temperature sensor is a temperature lower than the set temperature for keeping warm or the set temperature for keeping warm. If the temperature is lower than the burner control set temperature, which is set as the same temperature, the burner is ignited to heat the circulating hot water, and the temperature detected by the temperature sensor is lower than the burner control set temperature. In the above case, the present invention relates to a water heater configured to extinguish the burner and maintain the circulating hot water at the temperature set for keeping warm by the auxiliary heat source.

〔従来の技術〕[Conventional technology]

この種の給湯装置としては、例えば特開昭63−238
356号公報に開示されるものがある。この給湯装置で
は、循環流動する湯が保温用の設定温度に達したことが
検出されると、先ず補助熱源である電熱ヒータへの通電
を停止し、前記保温用の設定温度に達していることが設
定時間連続して検出されると今度は循環ポンプを停止す
る。
As this type of water heater, for example, Japanese Patent Application Laid-Open No. 63-238
There is one disclosed in Publication No. 356. In this water heater, when it is detected that the circulating hot water has reached the set temperature for keeping warm, it first stops supplying electricity to the electric heater, which is an auxiliary heat source, and checks that the hot water has reached the set temperature for keeping warm. If is detected continuously for a set time, the circulation pump will be stopped.

その後、自然冷却が行われて保温用の設定温度よりも3
度程度低下したことが検出されると、再び循環ポンプの
駆動と電熱ヒータへの通電を開始し、湯が保温用の設定
温度に維持されるようにしである。
After that, natural cooling occurs and the temperature is lower than the set temperature for keeping warm.
When it is detected that the temperature has dropped, the circulation pump is driven and the electric heater is turned on again to maintain the hot water at the set temperature.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述の給湯装置では、循環流動される湯が保温用の設定
温度以上になる状態が設定時間経過した時点から保温用
の設定温度よりも3度低い温度を検出する時点までの間
は循環ポンプは停止していることになる。循環ポンプが
停止すると循環路の湯は滞ることになるが、放熱による
温度低下には場所によって差があることから、自然冷却
が進むほど循環路の湯の温度にむらが生じてくる。例え
ば、バーナや補助熱源の近くでは残熱によって温度の低
下が遅いし、外に剥き出しになった部分では温度の低下
が速い特性がある。
In the water heater described above, the circulation pump does not operate from the time when the circulating hot water exceeds the set temperature for keeping warm until the time when the temperature is detected to be 3 degrees lower than the set temperature for keeping warm. It means it's stopped. When the circulation pump stops, the hot water in the circulation path stagnates, but since the temperature drop due to heat radiation varies from place to place, the more natural cooling progresses, the more uneven the temperature of the hot water in the circulation path becomes. For example, the temperature decreases slowly near the burner or auxiliary heat source due to residual heat, and the temperature decreases quickly in exposed areas.

従って、循環路の1箇所に設けられた温度センサで湯の
温度を検出していると、たとえ保温用の設定温度よりも
3度程度低下したことが検出されたとしても、循環路の
湯の平均温度はその温度よりも高かったり低かったりす
ることが考えられる。そのことによって、循環ポンプの
駆動や電熱ヒータへの通電を再開するタイミングがずれ
、正確な温度制御がしにくい難点があった。
Therefore, if the temperature of the hot water is detected by a temperature sensor installed at one point in the circulation path, even if it is detected that the temperature has dropped by about 3 degrees from the set temperature for keeping warm, the temperature of the hot water in the circulation path will The average temperature may be higher or lower than that temperature. As a result, the timing of driving the circulation pump and restarting energization of the electric heater is delayed, making it difficult to accurately control the temperature.

この難点を解消するためには、温度センサの数を増やす
ことで循環路の湯の平均的な温度を検出できるようにし
たり、循環ポンプを常時駆動して循環路の湯を絶えず循
環させるようにする方法が考えられる。しかしながら、
温度センサの数を増やす方法では、コストが高くなった
り、取付工事が煩雑化したり、検出結果の処理が複雑に
なる難点があり、また、循環ポンプを常時駆動する方法
では、エネルギーを多く消費するためにランニングコス
トが高くつく難点があり、いずれにしても満足のいくも
のではなかった。ちなみに、循環ポンプを常時駆動させ
てもランニングコストが低くなるように、循環ポンプの
送水能力を小にすることが考えられるが、この場合、運
転開始時において、循環路全体の湯の温度を迅速に上昇
させることができないものであり、実用しにくいもので
ある。
In order to solve this problem, it is necessary to increase the number of temperature sensors so that the average temperature of the hot water in the circulation path can be detected, or to constantly drive the circulation pump to constantly circulate the hot water in the circulation path. There are ways to do this. however,
Methods of increasing the number of temperature sensors have the drawbacks of higher costs, complicated installation work, and complicated processing of detection results, and methods of constantly driving circulation pumps consume a lot of energy. Therefore, the problem was that running costs were high, and in any case, it was not satisfactory. By the way, it is possible to reduce the water supply capacity of the circulation pump to reduce running costs even if the circulation pump is driven all the time. It is difficult to put it into practical use because it cannot be raised to a certain level.

本発明は、温度センサの数を増やすことなく、そしてラ
ンニングコストを低く抑えながらも循環路の温度制御を
正確に行えるようにすることを目的とする。
An object of the present invention is to accurately control the temperature of a circulation path without increasing the number of temperature sensors and while keeping running costs low.

〔課題を解決するための手段〕[Means to solve the problem]

上記目的を達成すために本発明の給湯装置では、前記循
環ポンプは、前記温度センサの検出温度が前記バーナ制
御用の設定温度よりも低い場合には送水能力が大に、前
記バーナ制御用の設定温度以上の場合には送水能力が小
に切り換わるように構成されている点を第1の特徴構成
としている。
In order to achieve the above object, in the water heater of the present invention, the circulation pump increases the water supply capacity to a large extent when the temperature detected by the temperature sensor is lower than the set temperature for the burner control. The first feature is that the water supply capacity is switched to low when the temperature is higher than the set temperature.

そして、前記バーナは、前記水加熱用熱交換器へ供給さ
れる水量を検出する水量センサの検出量が設定水量より
も小さい場合には消火し、且つ設定水量以上の場合には
着火するように構成されており、前記循環ポンプは、送
水能力小への切換えに伴う前記循環路の水量が前記設定
水量より小になり、且つ、送水能力大への切換えに伴う
前記循環路の水量が設定水量以上になるように送水する
よう構成されている点を第2の特徴構成としている。
The burner is configured to extinguish the burner when the amount of water detected by a water amount sensor that detects the amount of water supplied to the water heating heat exchanger is smaller than a set amount of water, and to ignite when the amount of water is equal to or greater than the set amount of water. The circulation pump is configured such that the amount of water in the circulation path becomes smaller than the set amount of water when switching to a low water delivery capacity, and the amount of water in the circulation path becomes smaller than the set amount of water when switching to a large water delivery capacity. The second feature is that the system is configured to supply water in the manner described above.

〔作 用〕[For production]

第1の特徴構成によれば、温度センサの検出値がバーナ
制御用の設定温度よりも低い場合には、送水能力を大に
切り換えた状態で循環ポンプを駆動し、バーナから加え
られる熱が循環路内の全体の湯に迅速にいきわたるよう
にする。
According to the first characteristic configuration, when the detected value of the temperature sensor is lower than the set temperature for burner control, the circulation pump is driven with the water supply capacity switched to high, and the heat added from the burner is circulated. Ensure that hot water quickly spreads throughout the area.

また、温度センサの検出値が前記バーナ制御用の設定温
度以上の場合には、送水能力を小に切り換えた状態で循
環ポンプを引続き駆動し、補助熱源から加えられる熱が
循環流動する湯にいきわたるようにする。湯が循環流動
することによって湯の温度が均一化され、1個等の少数
の温度センサで循環路内の湯の平均温度が検出されるよ
うになる。
In addition, if the detected value of the temperature sensor is equal to or higher than the set temperature for burner control, the circulation pump is continued to be driven with the water supply capacity switched to low, so that the heat added from the auxiliary heat source is distributed to the circulating hot water. do it like this. As the hot water circulates and flows, the temperature of the hot water becomes uniform, and the average temperature of the hot water in the circulation path can be detected by a small number of temperature sensors, such as one.

尚、水加熱用熱交換器で加熱するバーナ制御用の設定温
度と補助熱源によって加熱する保温用の設定温度が同じ
である場合には、補助熱源は、自然冷却を補って保温用
の設定温度に維持する熱量を発生する能力があれば十分
である。
In addition, if the set temperature for burner control heated by the water heating heat exchanger and the set temperature for keeping warm heated by the auxiliary heat source are the same, the auxiliary heat source will supplement the natural cooling and set the set temperature for keeping warm. It is sufficient to have the ability to generate enough heat to maintain the temperature.

但し、水加熱用熱交換器で加熱するバーナ制御用の設定
温度に比べて補助熱源によって加熱する保温用の設定温
度が高い場合には、補助熱源に、湯の温度を上昇させる
だけの能力を備えさせ、そして、作動を断続することで
保温用の設定温度に維持するようにする。
However, if the set temperature for heating by the auxiliary heat source is higher than the set temperature for controlling the burner heated by the water heating heat exchanger, the auxiliary heat source must have the capacity to raise the temperature of the hot water. Then, by intermittent operation, the temperature is maintained at the set temperature for keeping warm.

第2の特徴構成によれば、第1の特徴構成に次のような
作用が加わる。
According to the second characteristic configuration, the following effects are added to the first characteristic configuration.

温度センサの検出温度がバーナ制御用の設定温度よりも
低く、循環ポンプが送水能力が大で駆動されると、循環
路の水量を検出する水量センサの検出量が設定水量以上
になり、それによってバーナが着火する。
When the temperature detected by the temperature sensor is lower than the set temperature for burner control and the circulation pump is driven with a large water supply capacity, the amount detected by the water flow sensor that detects the amount of water in the circulation path becomes higher than the set water amount, which causes The burner ignites.

温度センサの検出温度がバーナ制御用の設定温度以上に
なり、循環ポンプが送水能力が小で駆動されると、循環
路の水量を検出する水量センサの検出量が設定水量より
小になり、それによってバーナが消火する。
When the temperature detected by the temperature sensor exceeds the set temperature for burner control and the circulation pump is driven with a low water supply capacity, the amount detected by the water sensor that detects the amount of water in the circulation path becomes smaller than the set water amount, and The burner is extinguished.

〔発明の効果〕〔Effect of the invention〕

第1の特徴構成では、1個等の少数の温度センサで循環
路内の湯の平均温度を正確に検出できるようになる。そ
してその検出結果に基づいて熱容量の小さい補助熱源を
効率的に制御し、循環路内の湯を保温用の設定温度に安
定的に維持できるようになる。その際、循環ポンプは常
時駆動するようになるが、循環ポンプの送水能力を小に
切り換えるので、ランニングコストの上昇を抑制するこ
とができる。要するに、運転開始時において循環路内の
全体の湯を迅速に上昇させる機能を残した状態で、循環
ポンプのランニングコストの低下を図り、且つ、温度セ
ンサの設置数を減少させながら、循環路内の湯を保温用
の設定温度に安定的に維持できるようになった。
In the first characteristic configuration, it becomes possible to accurately detect the average temperature of hot water in the circulation path with a small number of temperature sensors, such as one. Then, based on the detection results, the auxiliary heat source with a small heat capacity is efficiently controlled, making it possible to stably maintain the hot water in the circulation path at the set temperature for keeping warm. At this time, although the circulation pump is driven all the time, the water supply capacity of the circulation pump is reduced, so that it is possible to suppress an increase in running costs. In short, we aim to reduce the running cost of the circulation pump while retaining the function of quickly raising the entire hot water in the circulation path at the start of operation, and reduce the number of temperature sensors installed. It has become possible to stably maintain the hot water at the set temperature for keeping warm.

第2の特徴構成では、循環ポンプの駆動と、バーナの着
火や消火とを連係させることを、電気的或いは機械的な
連係構造を用いずに行えるので、構造の簡略化とコスト
の低下を図ることができる。
In the second characteristic configuration, the driving of the circulation pump and the ignition and extinguishing of the burner can be linked without using an electrical or mechanical linkage structure, which simplifies the structure and reduces costs. be able to.

又、バーナ、水加熱用熱交換器、水量センサを備える単
なる給湯装置に、循環ポンプや補助熱源や温度センサな
どを加えて即時給湯式の給湯装置に改造しようとする場
合に、電気的な配線をする手間を不要にするし、機械的
な制約を少なくする長所もある。
In addition, if you want to modify a simple water heater equipped with a burner, a water heating heat exchanger, and a water flow sensor to an instant hot water supply system by adding a circulation pump, auxiliary heat source, temperature sensor, etc., you will need to install electrical wiring. It also has the advantage of eliminating the need for additional work and reducing mechanical constraints.

さらにこのことは、循環ポンプ、補助熱源、温度センサ
などを一つのケースに組み込み、それを即時給湯ユニッ
トとして取り扱えることを可能にする。そうすれば、こ
の即時給湯ユニットは、即時給湯式でない給湯装置の給
水路と給湯路の途中に容易に設けることができるものと
なる。
Furthermore, this makes it possible to incorporate a circulation pump, an auxiliary heat source, a temperature sensor, etc. into one case and treat it as an instant hot water supply unit. In this way, this instant hot water supply unit can be easily installed between the water supply channel and the hot water supply path of a hot water supply device that is not of the instant hot water supply type.

〔実施例〕〔Example〕

図に示されているのは、水を保温用の設定温度よりも設
定値低い温度として設定されたバーナ制御用の設定温度
の湯に加熱する熱源機(A)と、給湯停止時に湯を保温
しておくための即時給湯ユニット(B)とを備えてなる
給湯装置である。この給湯装置では、熱源機(A)と即
時給湯ユニット(B)とを分離した状態で設置しである
The figure shows a heat source device (A) that heats water to a set temperature for burner control, which is set lower than the set temperature for keeping warm, and a heat source unit (A) that keeps hot water warm when hot water supply is stopped. This hot water supply device includes an instant hot water supply unit (B) for storing hot water. In this water heater, the heat source device (A) and the instant hot water supply unit (B) are installed separately.

そして、この給湯装置には、ガス供給路(R1)を通し
てガスが供給され、且つ、給水路(R2)を通して水が
供給されるようになっており、又、この給湯装置は、給
湯路(R3)を通して湯が供給されるようになっている
。給湯路(R3)の先端側には、第1・第2給湯栓(1
)、 (2)のそれぞれが接続されている。尚、給水路
(R2)からの分岐路(R2°)が第1・第2給湯栓(
1)、(2)に接続されて、第1・第2給湯栓(1)、
 (2)はいわゆる混合栓として機能するようになって
いる。
Gas is supplied to this water heater through a gas supply path (R1), and water is supplied through a water supply path (R2). ).Hot water is supplied through the The first and second hot water taps (1
) and (2) are connected. In addition, the branch path (R2°) from the water supply channel (R2) is the first and second hot water taps (
1), (2), the first and second hot water taps (1),
(2) functions as a so-called mixing faucet.

前記熱源機(A)には、バーナ(3)やそのバーナ(3
)によって加熱される水加熱用熱交換器(4)(以下で
は熱交換器と略称する)などを内装しである。ガス供給
路(R1)を通して供給されるガスは、バーナ(3)へ
送られる。又、給水路(R2)を通して供給される水は
、熱交換器(4)へ送られて加熱され、給湯路(R3)
を通して第1給湯栓(1)と第2給湯栓(2)へ供給さ
れる。
The heat source device (A) includes a burner (3) and its burner (3).
) is equipped with a water heating heat exchanger (4) (hereinafter abbreviated as a heat exchanger). Gas supplied through the gas supply path (R1) is sent to the burner (3). In addition, water supplied through the water supply channel (R2) is sent to the heat exchanger (4) and heated, and is then transferred to the hot water supply channel (R3).
The hot water is supplied to the first hot water tap (1) and the second hot water tap (2) through the hot water tap.

前記熱源機(A)内におけるガス供給路(R1)には2
つのガス電磁弁(5)、(6)とガス比例弁(7)を介
装してあり、熱源機(A)内における給水路(R2)に
は熱源機用の水量センサ(S1) (特許請求の範囲中
の水量センサに相当する)を介装してあり、更に、熱源
機(A)内における給湯路(R3)には湯温サーミスタ
(S1)と水量制御バルブ(8)を介装しである。また
、熱交換器(4)には残火安全装置(9)を、熱交換器
(4)の支持部には過熱防止装置(10)を付設してあ
り、バーナ(3)の下方には燃焼用ファン(11)を設
けである。
The gas supply path (R1) in the heat source device (A) has two
Two gas solenoid valves (5), (6) and a gas proportional valve (7) are installed, and the water supply channel (R2) in the heat source device (A) is equipped with a water flow sensor (S1) for the heat source device (patent A hot water temperature thermistor (S1) and a water flow control valve (8) are installed in the hot water supply path (R3) in the heat source device (A). It is. In addition, the heat exchanger (4) is equipped with a residual flame safety device (9), the support part of the heat exchanger (4) is equipped with an overheat prevention device (10), and the lower part of the burner (3) is equipped with an overheat prevention device (10). A combustion fan (11) is provided.

更に、これらはいずれも統括用のバーナコントローラ(
12)に接続してあり、このバーナコントローラ(12
)には、給湯装置本体から離れた位置に設置されたメイ
ンコントローラ(13)を接続しである。メインコント
ローラ(13)には、運転スイッチ(14)、運転ラン
プ(15)、燃焼ランプ(16)、2個の湯温調節ボタ
ン(17)を設けである。
Furthermore, all of these are equipped with a burner controller (
This burner controller (12) is connected to the burner controller (12).
) is connected to a main controller (13) installed at a location away from the main body of the water heater. The main controller (13) is equipped with an operation switch (14), an operation lamp (15), a combustion lamp (16), and two hot water temperature adjustment buttons (17).

バーナコントローラ(12)の電源には家庭用の交流1
00Vを使用している。尚、図中で示される(18)は
点火プラグ、(19)はバーナ(3)が着火したか否か
を検出するフレームロッド、(20)は水抜栓、(21
)は過圧逃し弁である。
The burner controller (12) is powered by household AC 1
00V is used. In addition, (18) shown in the figure is a spark plug, (19) is a flame rod that detects whether or not the burner (3) is ignited, (20) is a water drain plug, (21)
) is an overpressure relief valve.

このように構成される熱源機(A)は、前記運転スイッ
チ(14)をONにした状態において、熱源機用の水量
センサ(St)が設定水量以上の水量であることを検出
すると、燃焼用ファン(11)が駆動され、2つのガス
電磁弁(5)、(6)が開かれてバーナ(3)が着火さ
れ、そして湯が供給されることになる。供給される湯の
温度は、湯温サーミスタ(S1)によって検出されてお
り、この検出結果に基づいてガス比例弁(7)の開度が
調節され、湯温調節ボタン(17)で設定された温度(
給湯用の設定温度)に維持される。もし、供給される水
の温度が低すぎたり高すぎることでガス比例弁(7)に
よる調節では不十分な場合には、水量制御バルブ(8)
による水量調節がなされる。
When the heat source device (A) configured as described above detects that the water amount sensor (St) for the heat source device is equal to or more than the set water amount while the operation switch (14) is turned on, the heat source device (A) switches the combustion The fan (11) is driven, the two gas solenoid valves (5) and (6) are opened, the burner (3) is ignited, and hot water is supplied. The temperature of the supplied hot water is detected by a hot water temperature thermistor (S1), and based on this detection result, the opening degree of the gas proportional valve (7) is adjusted, and the opening degree is adjusted using the hot water temperature adjustment button (17). temperature(
The temperature is maintained at the set temperature for hot water supply. If the temperature of the supplied water is too low or too high and the adjustment by the gas proportional valve (7) is insufficient, the water flow control valve (8)
The amount of water is adjusted by

ここで、湯温サーミスタ(S1)が故障したり、水やガ
スの流量が旨く調節できずに熱交換器(3)が異常過熱
する場合には、残火安全装置(9〉が作動して2つのガ
ス電磁弁(5)、(6)が閉じられる。残火安全装置(
9)が作動せず、熱交換器(4)が異常過熱する場合に
は、過熱防止装置(10)が作動して2つのガス電磁弁
(5)、(6)が閉じられる。つまり2重の安全対策が
施されている。
If the hot water temperature thermistor (S1) malfunctions or the heat exchanger (3) overheats abnormally due to the inability to properly adjust the flow rate of water or gas, the residual fire safety device (9) will be activated. The two gas solenoid valves (5), (6) are closed.The embers safety device (
9) is not activated and the heat exchanger (4) is abnormally overheated, the overheat prevention device (10) is activated and the two gas solenoid valves (5) and (6) are closed. In other words, double safety measures are in place.

前記即時給湯ユニット(B)には、補助熱源の一例であ
る電熱式のヒータ(22)、電熱式のヒータ(22)を
収納するタンク(23)、循環ポンプ(24)などを内
装しである。給水路(R2〉を通して熱源機(A)へ供
給される水は、即時給湯ユニット(’B)内を通過して
から供給されるようになっており、又、給湯路(R3)
を通して第■給湯栓(1)や第2給湯栓(2)へ供給さ
れる湯も、即時給湯ユニット(B)を通過して供給され
るようになっている。
The instant hot water supply unit (B) is internally equipped with an electric heater (22), which is an example of an auxiliary heat source, a tank (23) housing the electric heater (22), a circulation pump (24), etc. . Water supplied to the heat source device (A) through the water supply channel (R2) is supplied after passing through the instant hot water supply unit ('B), and water is supplied to the heat source device (A) through the water supply channel (R3).
The hot water supplied to the No. 1 hot water tap (1) and the second hot water tap (2) through the instant hot water supply unit (B) is also supplied through the immediate hot water supply unit (B).

そして、即時給湯ユニット(B)内の給湯路(R3)中
に前記タンク(23)が配置されている。
The tank (23) is arranged in the hot water supply path (R3) in the instant hot water supply unit (B).

また、給湯路(R3)の先端に戻り湯路(R4)を接続
してあり、この戻り湯路(R4)の先端は、循環ポンプ
(24)を介して即時給湯ユニット(B)内の給水路(
R2)に接続しである。循環ポンプ(24)の作動によ
り、給湯路(R3)を通して供給される湯は戻り湯路(
R4)を通して給水路(R2)へ戻されるようになって
いる。尚、給水路(R2)、給湯路(R3)、戻り湯路
(R4)とで循環路(R5)が形成されることになる。
In addition, a return hot water path (R4) is connected to the tip of the hot water supply path (R3), and the tip of this return hot water path (R4) is connected to the water supply in the instant hot water supply unit (B) via the circulation pump (24). Road (
R2). By the operation of the circulation pump (24), the hot water supplied through the hot water supply path (R3) is transferred to the return hot water path (
R4) and is returned to the water supply waterway (R2). Note that a circulation path (R5) is formed by the water supply channel (R2), the hot water supply channel (R3), and the return hot water channel (R4).

前記即時給湯ユニッ) (B)内における給水路(R2
)には、循環路(R5)の湯が給水路(R2)の上流側
へ逆流するのを防止する2つの逆止弁(25)。
the immediate hot water supply unit) (B) in the water supply channel (R2
) are two check valves (25) that prevent the hot water in the circulation path (R5) from flowing back to the upstream side of the water supply channel (R2).

(26)と、循環ポンプ(24)の送水能力を監視する
循環用の水量センサ(S3)を介装しである。また、即
時給湯ユニット(B)内の戻り湯路(R4)には、循環
湯温サーミスタ(S4) (特許請求の範囲中の温度セ
ンサに相当する〉と、給湯時に給水路(R2)の水が戻
り湯路(R4)に流入するのを防止する逆止弁(27)
を介装しである。更に、タンク(23〉には、ヒータ(
22)の異常過熱を検出するとヒータ(22)への通電
を停止させる過昇温防止装置(28)を設けである。
(26) and a circulating water amount sensor (S3) that monitors the water supply capacity of the circulation pump (24). In addition, the return hot water path (R4) in the immediate hot water supply unit (B) is equipped with a circulating hot water temperature thermistor (S4) (corresponding to a temperature sensor in the claims) and a circulating hot water temperature thermistor (S4) (corresponding to the temperature sensor in the claims), and a Check valve (27) that prevents water from flowing into the return waterway (R4)
It is interposed. Furthermore, the tank (23) is equipped with a heater (
An excessive temperature rise prevention device (28) is provided which stops the power supply to the heater (22) when abnormal overheating of the heater (22) is detected.

前記ヒータ(22)、循環ポンプ(24)、循環用の水
量センサ(S3)、循環湯温サーミスタ(S4)はいず
れも統括用のコントローラ(29)に接続しである。こ
のコントローラ(29)には運転スイッチ(30)、2
4時間タイマー(31)、漏電ブレーカ(32)を接続
しである。コントローラ(29)の電源には家庭用の交
流100Vを使用している。尚、図中(33)は水抜栓
、(34)は過圧逃し弁である。
The heater (22), circulation pump (24), circulation water amount sensor (S3), and circulation hot water temperature thermistor (S4) are all connected to a general controller (29). This controller (29) includes an operation switch (30), 2
A 4-hour timer (31) and an earth leakage breaker (32) are connected. Household AC 100V is used as the power source for the controller (29). In the figure, (33) is a water drain valve, and (34) is an overpressure relief valve.

このように構成された即時給湯ユニット(B)は、前記
運転スイッチ(30)がONの状態においては、循環ポ
ンプ(24)が送水能力が大か小のいずれかの状態で連
続的に駆動され、循環路(R5)では常に湯が循環流動
している。ここで循環湯温サーミスタ(S4)によって
検出される温度と予め設定された温度(保温用の設定温
度で例えば60度)との差が第1偏差(例えば15度)
より大きければ、循環ポンプ(24)が送水能力大の状
態で駆動されて水量が増加し、それによって熱源機用の
水量センサ(St)によって設定水量以上として検出さ
れる。それに伴い、上述の如く燃焼用ファン(11)が
駆動され、2つのガス電磁弁(5)。
In the instant hot water supply unit (B) configured in this way, when the operation switch (30) is in the ON state, the circulation pump (24) is continuously driven with either a large or a small water supply capacity. , Hot water is constantly circulating and flowing in the circulation path (R5). Here, the difference between the temperature detected by the circulating hot water temperature thermistor (S4) and the preset temperature (for example, 60 degrees for heat retention) is the first deviation (for example, 15 degrees).
If it is larger, the circulation pump (24) is driven in a state where the water supply capacity is large, and the amount of water increases, and the water amount sensor (St) for the heat source device detects the amount of water as being equal to or greater than the set amount of water. Accordingly, the combustion fan (11) is driven as described above, and the two gas solenoid valves (5) are driven.

(6)が開かれてバーナ(3)が着火され、循環流動す
る湯が万遍なく加熱される。湯温か上昇して保温用の設
定温度との差が第2偏差(例えば5度)になれば、循環
ポンプ(24)が送水能力小の状態で駆動されて先程よ
りも水量が減少し、それによって熱源機用の水量センサ
(St)によって設定水量以下として検出される。それ
に伴い燃焼用ファン(11〉が停止し、2つのガス電磁
弁(5)、 (6)が閉じられてバーナ(3)が消火さ
れ、それに代えてヒータ(22)に通電され、循環流動
する湯がタンク(23)内から万遍なく加熱される。
(6) is opened, burner (3) is ignited, and the circulating hot water is evenly heated. When the water temperature rises and the difference from the set temperature for warming becomes the second deviation (for example, 5 degrees), the circulation pump (24) is driven with a small water supply capacity, and the water volume is reduced compared to before. Accordingly, the water amount sensor (St) for the heat source device detects that the water amount is less than the set water amount. Accordingly, the combustion fan (11) is stopped, the two gas solenoid valves (5) and (6) are closed, the burner (3) is extinguished, and the heater (22) is energized instead, causing circulation. The hot water is evenly heated from within the tank (23).

湯温か更に上昇して保温用の設定温度に達したら、ヒー
タ(22)への通電が停止される。そして自然冷却によ
って保温用の設定温度との差が第2偏差より大きくなる
と再びヒータ(22)に通電される。
When the temperature of the water further rises and reaches the set temperature for keeping warm, the power supply to the heater (22) is stopped. Then, when the difference from the set temperature for keeping warm becomes larger than the second deviation due to natural cooling, the heater (22) is energized again.

前記即時給湯ユニット(B)は、運転スイッチ(30)
を0N−OFFすることで作動したり停止したりするが
、24時間タイマー(31)によって設定時刻になった
ら自動的に起動・停止することもできるようになってい
る。
The instant hot water supply unit (B) has an operation switch (30).
It can be activated or stopped by turning it ON or OFF, but it can also be started or stopped automatically at a set time using a 24-hour timer (31).

〔別実施例〕[Another example]

上記実施例で述べた如く、一般には、パーナ制御用の設
定温度に、消火用の温度とそれよりも低い着火用の温度
とを別個に設けることになるが、消火用の温度と着火用
の温度とを同じ温度に設定して実施してもよい。さらに
は、バーナ制御用の設定温度を保温用の設定温度と同じ
温度に設定して実施することもできる。
As described in the above embodiment, generally, the set temperature for PANA control is set separately for extinguishing temperature and lower ignition temperature. The temperature may be set to the same temperature. Furthermore, the set temperature for burner control can be set to the same temperature as the set temperature for heat retention.

熱源機(A)と即時給湯ユニット(B)は、1個のケー
ス内に一体的に組み込むことも可能である。
The heat source device (A) and the instant hot water supply unit (B) can also be integrated into one case.

熱源機(A)のメインコントローラ(13)と即時給湯
ユニット(B)のコントローラ(29)を電気的に接続
し、即時給湯ユニット(B)をメインコントローラ(1
3)で操作できるようにしてもよい。
The main controller (13) of the heat source device (A) and the controller (29) of the instant hot water supply unit (B) are electrically connected, and the instant hot water supply unit (B) is connected to the main controller (13) of the instant hot water supply unit (B).
3) may be operated.

補助熱源(22)としては、赤外線を利用したヒータで
あってもよいし、化石燃料を燃焼させる小型のヒータで
あってもよい。
The auxiliary heat source (22) may be a heater using infrared rays or a small heater that burns fossil fuel.

又、循環路(R5)に、温水暖房装置を接続してもよい
。この場合、温水暖房装置への湯供給を断続する弁を組
み込むことは勿論である。
Further, a hot water heating device may be connected to the circulation path (R5). In this case, it goes without saying that a valve may be incorporated to cut off and cut off the supply of hot water to the hot water heating device.

尚、特許請求の範囲の項に図面との対照を便利にするた
めに符号を記すが、この記入により本発明は添付図面の
構造に限定されるものではない。
Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

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

図面は本発明に係る給湯装置の全体構成図である。 (R2)・・・・・・給水路、(R3)・・・・・・給
湯路、(R4)・・・・・・戻り湯路、(R5)・・・
・・・循環路、(S1)・・・・・・水量センサ、(S
4)・・・・・・温度センサ、(1)、(2)・・・・
・・給湯栓、(3)・・・・・・バーナ、(4)・・・
・・・水加熱用熱交換器、(22)・・・・・・補助熱
源、(24)・・・・・・循環ポンプ。
The drawing is an overall configuration diagram of a water heater according to the present invention. (R2)...... Water supply channel, (R3)... Hot water supply channel, (R4)... Return hot water channel, (R5)...
...Circulation path, (S1) ...Water amount sensor, (S
4)...Temperature sensor, (1), (2)...
...Hot water tap, (3)...Burner, (4)...
... Heat exchanger for water heating, (22) ... Auxiliary heat source, (24) ... Circulation pump.

Claims (1)

【特許請求の範囲】 1、バーナ(3)にて加熱される水加熱用熱交換器(4
)への給水路(R2)と前記水加熱用熱交換器(4)か
ら給湯栓(1)、(2)へ延設された給湯路(R3)と
の間に戻り湯路(R4)が介装され、前記給湯路(R3
)の湯を前記戻り湯路(R4)を通して前記給水路(R
2)へ戻すように循環流動させる循環ポンプ(24)が
設けられ、前記循環ポンプ(24)によって循環流動さ
れる湯を加熱する補助熱源(22)と、前記給水路(R
2)と前記給湯路(R3)と前記戻り湯路(R4)で形
成される循環路(R5)の湯の温度を検出する温度セン
サ(S4)とが設けられ、前記温度センサ(S4)の検
出温度が、保温用の設定温度よりも設定値低い温度ある
いは前記保温用の設定温度と同じ温度として設定された
バーナ制御用の設定温度より低い場合には、前記バーナ
(3)を着火して循環流動される湯を加熱し、且つ、前
記温度センサ(S4)の検出温度が前記バーナ制御用の
設定温度以上の場合には前記バーナ(3)を消火すると
ともに、前記補助熱源(22)によって前記循環流動さ
れる湯を前記保温用の設定温度に維持するように構成さ
れている給湯装置であって、前記循環ポンプ(24)は
、前記温度センサ(S4)の検出温度が前記バーナ制御
用の設定温度よりも低い場合には送水能力が大に、前記
バーナ制御用の設定温度以上の場合には送水能力が小に
切り換わるように構成されている給湯装置。 2、前記バーナ(3)は、前記水加熱用熱交換器(4)
へ供給される水量を検出する水量センサ(S1)の検出
量が設定水量よりも小さい場合には消火し、且つ設定水
量以上の場合には着火するように構成されており、前記
循環ポンプ(24)は、送水能力小への切換えに伴う前
記循環路(R5)の水量が前記設定水量より小になり、
且つ、送水能力大への切換えに伴う前記循環路(R5)
の水量が設定水量以上になるように送水するよう構成さ
れている請求項1記載の給湯装置。
[Claims] 1. A water heating heat exchanger (4) heated by a burner (3).
) and a hot water supply path (R3) extending from the water heating heat exchanger (4) to the hot water taps (1) and (2), a return hot water path (R4) is provided. The hot water supply path (R3
) through the return waterway (R4) to the water supply channel (R4).
A circulation pump (24) is provided to circulate hot water back to the water supply channel (R
2) and a temperature sensor (S4) that detects the temperature of hot water in the circulation path (R5) formed by the hot water supply path (R3) and the return hot water path (R4), and If the detected temperature is lower than the set temperature for heat retention or lower than the set temperature for burner control, which is set as the same temperature as the set temperature for heat retention, the burner (3) is ignited. The circulating hot water is heated, and when the temperature detected by the temperature sensor (S4) is equal to or higher than the set temperature for controlling the burner, the burner (3) is extinguished and the auxiliary heat source (22) is used to heat the hot water. The hot water supply device is configured to maintain the circulating hot water at the set temperature for heat retention, and the circulation pump (24) is configured to maintain the circulating hot water at the set temperature for heat retention, and the circulation pump (24) is configured to maintain the temperature detected by the temperature sensor (S4) for controlling the burner. The water supply device is configured such that the water supply capacity is increased when the temperature is lower than the set temperature for controlling the burner, and the water supply capacity is switched to the lower water supply capacity when the temperature is higher than the set temperature for controlling the burner. 2. The burner (3) is connected to the water heating heat exchanger (4)
It is configured to extinguish the fire if the detected amount of water by a water amount sensor (S1) that detects the amount of water supplied to the circulation pump (24 ), the amount of water in the circulation path (R5) becomes smaller than the set amount of water due to switching to low water supply capacity,
In addition, the above-mentioned circulation path (R5) due to switching to a large water supply capacity
2. The hot water supply device according to claim 1, wherein the water supply device is configured to feed water so that the amount of water in the water is equal to or greater than a set amount of water.
JP1226891A 1989-08-31 1989-08-31 Water heater Expired - Fee Related JP2554749B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1226891A JP2554749B2 (en) 1989-08-31 1989-08-31 Water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1226891A JP2554749B2 (en) 1989-08-31 1989-08-31 Water heater

Publications (2)

Publication Number Publication Date
JPH0391650A true JPH0391650A (en) 1991-04-17
JP2554749B2 JP2554749B2 (en) 1996-11-13

Family

ID=16852205

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1226891A Expired - Fee Related JP2554749B2 (en) 1989-08-31 1989-08-31 Water heater

Country Status (1)

Country Link
JP (1) JP2554749B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014228174A (en) * 2013-05-21 2014-12-08 リンナイ株式会社 Hot water supply system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02187559A (en) * 1989-01-13 1990-07-23 Osaka Gas Co Ltd Hot water supplying device and heat insulation device for hot water supply

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02187559A (en) * 1989-01-13 1990-07-23 Osaka Gas Co Ltd Hot water supplying device and heat insulation device for hot water supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014228174A (en) * 2013-05-21 2014-12-08 リンナイ株式会社 Hot water supply system

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