JPH0674558A - Hot water supply apparatus - Google Patents
Hot water supply apparatusInfo
- Publication number
- JPH0674558A JPH0674558A JP4231018A JP23101892A JPH0674558A JP H0674558 A JPH0674558 A JP H0674558A JP 4231018 A JP4231018 A JP 4231018A JP 23101892 A JP23101892 A JP 23101892A JP H0674558 A JPH0674558 A JP H0674558A
- Authority
- JP
- Japan
- Prior art keywords
- water supply
- hot water
- water
- hot
- valve
- 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 190
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 230000007423 decrease Effects 0.000 claims description 8
- 230000020169 heat generation Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000010079 rubber tapping Methods 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Details Of Fluid Heaters (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は給湯機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water heater.
【０００２】[0002]
【従来の技術】従来、出湯温度設定器で設定した設定温
度と給水温度センサｄで測定した給水温度との差及び水
量センサｅで測定した流量から要求熱量を算出し、この
要求熱量が給湯機ａの最大供給熱量を超える場合は、出
湯弁ｆで流量を絞って出湯温度の低下を防止する機能を
有する給湯機がある。2. Description of the Related Art Conventionally, a required heat amount is calculated from a difference between a set temperature set by a hot water temperature setting device and a feed water temperature measured by a feed water temperature sensor d and a flow rate measured by a water amount sensor e. There is a water heater having a function of preventing the decrease of the hot water temperature by restricting the flow rate by the hot water discharge valve f when the maximum supplied heat amount of a is exceeded.
【０００３】[0003]
【発明が解決しようとする課題】ところが、図３で示す
ように、かかる給湯機ａに接続した湯水混合栓ｂを使用
中、同給湯機ａに接続した他の湯栓ｃが開かれると出湯
量が増加するので要求熱量が増加する。このとき要求熱
量が給湯機の最大供給熱量を超えると、出湯弁ｆで流量
を絞って出湯温度の低下を防止することになる。そのた
め、図４で示すように、湯水混合栓ｂに流入する湯の量
が減少するにもかかわらず、同湯水混合栓ｂに流入する
水の量は不変であるため、同湯水混合栓ｂから流出する
混合湯水の温度が低下するという問題がある。However, as shown in FIG. 3, when the hot and cold water mixing tap b connected to the hot water supply apparatus a is in use, another hot water tap c connected to the hot water supply apparatus a is opened. Since the amount of hot water increases, the amount of heat required increases. At this time, if the required amount of heat exceeds the maximum amount of heat supplied from the water heater, the flow rate is reduced by the hot water discharge valve f to prevent the temperature of the hot water discharge from decreasing. Therefore, as shown in FIG. 4, although the amount of hot water flowing into the hot and cold water mixing tap b decreases, the amount of water flowing into the hot and cold water mixing tap b does not change. There is a problem that the temperature of the mixed hot and cold water flowing out decreases.
【０００４】[0004]
【課題を解決するための手段】本発明では、設定温度と
入水温度との差及び流量から算出される要求熱量が給湯
機の最大供給熱量を超える場合は、流量を絞って出湯温
度の低下を防止する機能を有する給湯機において、給湯
機に出湯口と出水口とを設け、出湯口と出水口の上流側
にそれぞれ出湯弁と給水弁とを設けると共に、出湯弁と
給水弁との下流間に差圧センサを介設して、差圧センサ
の出力に基づき、給水弁を上記下流間の差圧を小さくす
る方向に作動させることを特徴とする給湯機を提供せん
とするものである。According to the present invention, when the required heat quantity calculated from the difference between the set temperature and the incoming water temperature and the flow rate exceeds the maximum supply heat quantity of the water heater, the flow rate is reduced to lower the tap water temperature. In a water heater having a function to prevent, a hot water outlet and a water outlet are provided in the water heater, and a hot water outlet and a water supply valve are respectively provided on the upstream side of the hot water outlet and the hot water outlet, and between the hot water supply valve and the water supply valve downstream. The water heater is characterized in that a differential pressure sensor is provided in the valve and the water supply valve is operated in a direction to reduce the differential pressure between the downstream sides based on the output of the differential pressure sensor.
【０００５】[0005]
【実施例】本発明の実施例を図面を参照して説明する。Embodiments of the present invention will be described with reference to the drawings.
【０００６】図１は、本発明に係る給湯機Ａの構成と、
これに接続された湯水混合栓Ｂと、他の湯栓Ｃとを示し
ており、１はバーナ、２は熱交換部、３は給水温度を測
定する給水温度センサ、４は出湯温度を測定する出湯温
度センサ、５は熱交換部２への給水量を測定する水量セ
ンサ、６は制御部、７は出湯温度を設定する出湯温度設
定器、８はバーナ１に供給するガスの量を制御するガス
比例弁、９は出湯量すなわち熱交換部２への給水量を制
御する出湯弁、10は出湯口、11は給水口である。FIG. 1 shows the structure of a water heater A according to the present invention,
Shown are a hot and cold water mixing tap B and another hot tap C which are connected to this, where 1 is a burner, 2 is a heat exchange section, 3 is a feed water temperature sensor for measuring the feed water temperature, and 4 is a tap water temperature. Hot water temperature sensor, 5 is a water amount sensor for measuring the amount of water supplied to the heat exchange unit 2, 6 is a control unit, 7 is a hot water temperature setting device for setting the hot water temperature, and 8 is the amount of gas supplied to the burner 1. A gas proportional valve, 9 is a hot water outlet valve for controlling the amount of hot water discharged, that is, the amount of water supplied to the heat exchange section 2, 10 is a hot water outlet, and 11 is a water inlet.
【０００７】そして、給水温度と設定温度との差に熱交
換部２への給水量を乗じて得た要求熱量に応じてガス比
例弁８を開閉することにより、バーナ１の発熱量を要求
熱量に一致させるというフィードフォワード制御を行っ
ている。そして、上記要求熱量がバーナ１の最大供給発
熱量を超える場合は、出湯弁９を絞って熱交換部２への
給水量を減らすことにより、出湯温度を維持するように
している。Then, the calorific value of the burner 1 is changed by opening and closing the gas proportional valve 8 in accordance with the required heat quantity obtained by multiplying the difference between the water supply temperature and the set temperature by the water supply quantity to the heat exchange section 2. Feed-forward control is performed so that When the required heat amount exceeds the maximum heat generation amount of the burner 1, the hot water discharge temperature is maintained by reducing the hot water supply valve 9 to reduce the amount of water supplied to the heat exchange section 2.
【０００８】また、上記フィードフォワード制御と、設
定温度と出湯温度との差に基づいてガス比例弁８及び出
湯弁９を開閉するフィードバック制御とを複合した制御
を行っている。Further, the feedforward control is combined with the feedback control for opening and closing the gas proportional valve 8 and the hot water outlet valve 9 based on the difference between the set temperature and the hot water outlet temperature.
【０００９】かかる給湯機Ａにおいて、本発明では、水
道管12を給湯機Ａ内部に引込んで、熱交換部２への管路
と湯水混合栓Ｂに給水する給水管13とに分岐させて、給
水管13に給水弁14を設けると共に、前記出湯弁９及び給
水弁14の下流において給湯管15と給水管13との間に接続
した差圧センサ16を介設して、給湯圧力と給水圧力との
差圧を測定し、制御部６により給水弁14を差圧が小さく
なる方向に作動させるようにしている。17は出水口であ
る。In such a water heater A, according to the present invention, the water pipe 12 is drawn into the water heater A and is branched into a pipe line to the heat exchange section 2 and a water pipe 13 for supplying water to the hot and cold water mixing tap B. A water supply valve 14 is provided in the water supply pipe 13, and a pressure difference sensor 16 connected between the hot water supply pipe 15 and the water supply pipe 13 is provided downstream of the hot water supply valve 9 and the water supply valve 14 to provide hot water supply pressure and water supply pressure. The pressure difference is measured and the control unit 6 operates the water supply valve 14 in the direction in which the pressure difference decreases. 17 is a water outlet.
【００１０】上記構成によって、給湯機Ａに接続した他
の湯栓Ｃが開かれて、要求熱量が最大供給熱量を超えた
ときの湯水混合栓Ｂから流出する混合湯水の温度が低下
するのを防止することができる。With the above structure, the temperature of the mixed hot water flowing out of the hot and cold water mixing tap B when the other hot water tap C connected to the water heater A is opened and the required heat quantity exceeds the maximum supplied heat quantity is lowered. Can be prevented.
【００１１】すなわち、図２で示すように、他の湯栓Ｃ
が開かれると出湯量が増加する。そして、要求熱量が増
加してバーナ１の最大供給熱量を超えると、出湯弁９が
絞られ出湯量が減少し、給湯圧力が低下して湯水混合栓
Ｂへの入湯量が減少する。That is, as shown in FIG. 2, another tap C
The amount of tap water increases when is opened. Then, when the required heat amount increases and exceeds the maximum heat supply amount of the burner 1, the hot water outlet valve 9 is throttled to reduce the hot water supply amount, the hot water supply pressure decreases, and the hot water supply amount to the hot and cold water mixing tap B decreases.
【００１２】上記圧力低下は給湯圧力と給水圧力との差
圧として現れるので、これを差圧センサ16が検知して、
給水弁14を絞り（給湯圧力と給水圧力との差圧を少くす
る方向への作動）、給湯圧力とほぼ等しくなるまで給水
圧力を低下させるので、湯水混合栓Ｂでの湯水の混合比
率の変動が防止され、同湯水混合栓Ｂからの出湯温度を
一定に維持することができる。Since the above pressure drop appears as a pressure difference between the hot water supply pressure and the water supply pressure, the differential pressure sensor 16 detects this and
The water supply valve 14 is throttled (actuated in a direction to reduce the pressure difference between the hot water supply pressure and the water supply pressure), and the water supply pressure is reduced until it becomes substantially equal to the hot water supply pressure. Therefore, the temperature of the hot water discharged from the hot water / water mixing tap B can be maintained constant.
【００１３】また、他の湯栓Ｃを閉じたために、要求熱
量が最大供給熱量を下回ったときには、出湯弁９が開か
れて給湯圧力が上昇するが、給水弁14が開かれ（差圧を
小さくする方向への作動）、給水圧力が給湯圧力とほぼ
等しくなるまで上昇するので、湯水混合栓Ｂでの湯水の
混合比率が変動せず、同湯水混合栓Ｂからは一定温度の
混合湯水を吐出することになる。When the required amount of heat falls below the maximum amount of heat supplied due to the closing of the other tap C, the hot water supply valve 9 is opened to increase the hot water supply pressure, but the water supply valve 14 is opened (the differential pressure Since the water supply pressure rises until the water supply pressure becomes substantially equal to the hot water supply pressure, the mixing ratio of hot and cold water in the hot and cold water mixing tap B does not fluctuate, and mixed hot and cold water having a constant temperature is supplied from the hot and cold water mixing tap B. It will be discharged.
【００１４】また、給湯圧力と給水圧力との差圧が小さ
くなる方向に給水弁14を作動させるようにしたことで、
給水圧力が変動しても、給湯圧力と給水圧力とが等しい
状態が維持され、湯水混合栓Ｂでの湯水の混合比率が変
動せず、吐出水の温度を一定に保つことができる。Further, since the water supply valve 14 is operated in the direction in which the pressure difference between the hot water supply pressure and the water supply pressure decreases,
Even if the water supply pressure fluctuates, the hot water supply pressure and the water supply pressure remain the same, the mixing ratio of the hot and cold water in the hot and cold water mixing tap B does not fluctuate, and the temperature of the discharged water can be kept constant.
【００１５】[0015]
【発明の効果】本発明によれば、設定温度と入水温度と
の差及び流量から算出される要求熱量が給湯機の最大供
給熱量を超える場合は、流量を絞って出湯温度の低下を
防止する機能を有する給湯機において、給湯機に出湯口
と出水口とを設け、出湯口と出水口の上流側にそれぞれ
出湯弁と給水弁とを設けると共に、出湯弁と給水弁との
下流間に差圧センサを介設して、差圧センサの出力に基
づき、給水弁を上記下流間の差圧を小さくする方向に作
動させるようにしたので、他の湯栓が開かれて要求熱量
が増加して出湯弁が絞られ出湯量が減少し給湯圧力が低
下した場合でも、湯水混合栓からの吐出水温度を一定に
維持することができる。According to the present invention, when the required heat quantity calculated from the difference between the set temperature and the incoming water temperature and the flow rate exceeds the maximum supply heat quantity of the water heater, the flow rate is throttled to prevent the tapping temperature from lowering. In a water heater having a function, the hot water supply device is provided with a hot water outlet and a water outlet, and a hot water outlet and a water supply valve are respectively provided on the upstream side of the hot water outlet and the hot water outlet, and a difference between the hot water supply valve and the downstream of the hot water supply valve is provided. Since the pressure sensor is installed to operate the water supply valve based on the output of the differential pressure sensor in the direction to reduce the differential pressure between the above-mentioned downstream, other hot taps are opened and the required heat quantity increases. Even when the hot water outlet valve is throttled to reduce the amount of hot water discharged and the hot water supply pressure is lowered, the temperature of the water discharged from the hot and cold water mixing tap can be maintained constant.
【００１６】また、他の湯栓を閉じたために、要求熱量
が最大供給熱量を下回ったときには、出湯弁が開かれて
給湯圧力が上昇するが、給水弁が開かれる（給湯圧力と
給水圧力との差圧を小さくする方向への作動）ので、給
水圧力が給湯圧力とほぼ等しくなるまで上昇するので、
湯水混合栓Ｂでの湯水の混合比率が変動せず、同湯水混
合栓Ｂからは一定温度の混合湯水を吐出することにな
る。When the required heat quantity falls below the maximum supply heat quantity due to the closing of the other hot water tap, the hot water supply valve is opened and the hot water supply pressure rises, but the water supply valve is opened (the hot water supply pressure and the water supply pressure Operation in the direction of decreasing the differential pressure of), so the water supply pressure rises until it becomes almost equal to the hot water supply pressure.
The mixing ratio of hot and cold water in the hot and cold water mixing tap B does not change, and the hot and cold water mixing tap B discharges hot and cold mixed water having a constant temperature.
【００１７】また、給水圧力が変動しても、給湯圧力と
給水圧力とが等しい状態が維持されるので、湯水混合栓
Ｂでの湯水の混合比率が変動せず、吐出水の温度を一定
に保つことができる。Further, even if the water supply pressure fluctuates, the hot water supply pressure and the water supply pressure remain the same, so that the mixing ratio of the hot and cold water in the hot and cold water mixing tap B does not fluctuate and the discharge water temperature is kept constant. Can be kept.
【図１】本発明に係る給湯機の構成を示す説明図。FIG. 1 is an explanatory diagram showing a configuration of a water heater according to the present invention.
【図２】湯水混合栓の出湯特性を示すグラフ。FIG. 2 is a graph showing tapping characteristics of a tap tap.
【図３】従来給湯機の構成を示す説明図。FIG. 3 is an explanatory view showing a configuration of a conventional water heater.
【図４】従来給湯機の出湯特性を示すグラフ。FIG. 4 is a graph showing tapping characteristics of a conventional water heater.
ａ 出湯弁 Ａ 給湯機 10 出湯口 14 給水弁 16 差圧センサ 17 出水口 a Hot water supply valve A Hot water supply device 10 Hot water outlet 14 Water supply valve 16 Differential pressure sensor 17 Water outlet
Claims (1)
算出される要求熱量が給湯機Ａの最大供給熱量を超える
場合は、流量を絞って出湯温度の低下を防止する機能を
有する給湯機(A) において、 給湯機(A) に出湯口(10)と出水口(17)とを設け、出湯口
(10)と出水口(17)の上流側にそれぞれ出湯弁(9) と給水
弁(14)とを設けると共に、出湯弁(9) と給水弁(14)との
下流間に差圧センサ(16)を介設して、差圧センサ(16)の
出力に基づき、給水弁(14)を上記下流間の差圧を小さく
する方向に作動させることを特徴とする給湯機。1. A water heater having a function of preventing a decrease in hot water discharge temperature by limiting the flow rate when the required heat quantity calculated from the difference between the set temperature and the incoming water temperature and the flow rate exceeds the maximum heat supply quantity of the hot water supply apparatus A. In (A), the water heater (A) is equipped with a hot water outlet (10) and a hot water outlet (17).
A hot water outlet valve (9) and a water supply valve (14) are installed on the upstream side of (10) and the water outlet (17), respectively, and a differential pressure sensor (9) is provided between the hot water outlet valve (9) and the water supply valve (14). A water heater characterized in that a water supply valve (14) is actuated in such a direction as to reduce the differential pressure between the downstream sides based on the output of the differential pressure sensor (16) via the (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4231018A JPH0674558A (en) | 1992-08-31 | 1992-08-31 | Hot water supply apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4231018A JPH0674558A (en) | 1992-08-31 | 1992-08-31 | Hot water supply apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0674558A true JPH0674558A (en) | 1994-03-15 |
Family
ID=16916968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4231018A Pending JPH0674558A (en) | 1992-08-31 | 1992-08-31 | Hot water supply apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0674558A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015209984A (en) * | 2014-04-23 | 2015-11-24 | 株式会社ノーリツ | Hot water mixing device |
-
1992
- 1992-08-31 JP JP4231018A patent/JPH0674558A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015209984A (en) * | 2014-04-23 | 2015-11-24 | 株式会社ノーリツ | Hot water mixing device |
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