JPH073643B2 - Hot water mixing device - Google Patents

Hot water mixing device

Info

Publication number
JPH073643B2
JPH073643B2 JP61196355A JP19635586A JPH073643B2 JP H073643 B2 JPH073643 B2 JP H073643B2 JP 61196355 A JP61196355 A JP 61196355A JP 19635586 A JP19635586 A JP 19635586A JP H073643 B2 JPH073643 B2 JP H073643B2
Authority
JP
Japan
Prior art keywords
hot water
valve opening
closing speed
deviation
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.)
Expired - Lifetime
Application number
JP61196355A
Other languages
Japanese (ja)
Other versions
JPS6352219A (en
Inventor
修 筒井
行宏 室屋
博文 竹内
恵司 林
Original Assignee
東陶機器株式会社
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 東陶機器株式会社 filed Critical 東陶機器株式会社
Priority to JP61196355A priority Critical patent/JPH073643B2/en
Priority to KR1019870008349A priority patent/KR900008067B1/en
Priority to US07/080,749 priority patent/US4739923A/en
Priority to CA000543559A priority patent/CA1272707A/en
Priority to EP87306862A priority patent/EP0259969B1/en
Priority to DE8787306862T priority patent/DE3782787T2/en
Publication of JPS6352219A publication Critical patent/JPS6352219A/en
Publication of JPH073643B2 publication Critical patent/JPH073643B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Control Of Temperature (AREA)

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、出湯温度と目標温度との偏差に基づいて給
湯バルブならびに給水バルブの開度を調節し、湯と水を
混合割合を変えて出湯温度の帰還制御を行なう湯水混合
装置に係り、特に給湯バルブ側の開度が極めて大きい状
態で給湯が開始された場合でも短時間で所望の温度の湯
水を供給できるようにした湯水混合装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention adjusts the opening of the hot water supply valve and the water supply valve based on the deviation between the hot water temperature and the target temperature to change the mixing ratio of hot water and water. The present invention relates to a hot and cold water mixing apparatus for feedback control of hot water temperature, and particularly to a hot and cold water mixing apparatus capable of supplying hot water at a desired temperature in a short time even when hot water supply is started in a state where the opening degree of the hot water supply valve side is extremely large. .

(従来の技術) 湯水混合装置は、周知のように、給湯バルブが設けられ
た給湯管と給水バルブが設けられた給水管とを混合水管
に接続し、混合水管内で給湯バルブを通過した湯と給水
バルブを通過した水とを混合してカラン等へ導く。
(Prior Art) As is well known, a hot water mixing device connects a hot water supply pipe provided with a hot water supply valve and a water supply pipe provided with a water supply valve to the mixed water pipe, and the hot water passed through the hot water supply valve in the mixed water pipe. And the water that has passed through the water supply valve are mixed and introduced to currants or the like.

このような湯水混合装置は、一般に、混合水管にその混
合水管内の出湯温度を検出する温度センサを設け、この
温度センサの出力信号に基づき出湯温度の設定された目
標温度との偏差に応じて給湯バルブと給水バルブとを連
動して駆動し、湯水の混合割合を調節して出湯温度の帰
還制御を行なう。
Such a hot and cold water mixing apparatus is generally provided with a temperature sensor for detecting the hot water temperature in the mixed water pipe in the mixed water pipe, and in accordance with the deviation of the hot water temperature from the set target temperature based on the output signal of the temperature sensor. The hot water supply valve and the hot water supply valve are driven in association with each other to adjust the mixing ratio of the hot water and the hot water supply temperature feedback control.

このような帰還制御において偏差とバルブの開度を調整
する速度(バルブ開閉速度)との関係を規定する制御ゲ
インを大きく設定すると、ハンチングが発生しやすくな
る。このため、例えば2種類の制御ゲインを用意し、偏
差が大の時は比較的小さめの制御ゲインを選択し、偏差
が小の時は比較的大きめの制御ゲインを選択し、偏差の
大小によってバルブ開閉速度が大幅に変化しないように
制御することで、出湯温度の急激な変化を防止するとと
もに、帰還制御に伴う出湯温度のハンチングを防止する
ようにする構成が提案されている。このような偏差に応
じて制御ゲインを異ならしめこれによってバルブ開閉速
度を異ならしめ構成は、出湯が継続されている状態の帰
還制御として有効である。
In such feedback control, if the control gain that defines the relationship between the deviation and the speed for adjusting the valve opening (valve opening / closing speed) is set to a large value, hunting is likely to occur. For this reason, for example, two types of control gains are prepared, a relatively small control gain is selected when the deviation is large, and a relatively large control gain is selected when the deviation is small. There has been proposed a configuration in which the opening / closing speed is controlled so as not to change significantly to prevent a rapid change in the outlet heated water temperature and to prevent hunting of the outlet heated water temperature due to feedback control. The configuration in which the control gain is made different in accordance with such a deviation and thereby the valve opening / closing speed is made different is effective as feedback control in a state in which hot water is being continued.

(発明が解決しようとする課題) しかしながら、出湯停止状態から給湯を開始する場合に
は、次のような問題が生ずる。出湯停止状態では混合水
管内の湯温が自然放熱によって低下するため、帰還制御
系は給湯バルブ側の開度を大きくするよう制御する。こ
の結果、通常は給湯バルブの開度が全開状態となる。そ
して、給湯バルブが全開もしくはその開度が大きくなっ
た状態で給湯が開始されると、混合水管内に残留した湯
水が流出した後に、全開もしくは開度大となった給湯バ
ルブから高温の湯が大量に供給されるため、出湯温度が
目標温度よりも大幅に高くなる。さらに、この偏差が大
きい状態で低めの制御ゲインを選択する制御を行なう
と、出湯温度が目標温度に近づくまでに多大な時間を要
するようになる。すなわち、給湯停止状態からの出湯時
(コールドスタート時)に、所望の湯温よりも高い湯水
が供給されるという問題が生ずる。
(Problems to be Solved by the Invention) However, when hot water supply is started from the hot water discharge stopped state, the following problems occur. When the hot water supply is stopped, the hot water temperature in the mixed water pipe decreases due to natural heat dissipation, so the feedback control system controls to increase the opening degree on the hot water supply valve side. As a result, the opening degree of the hot water supply valve is normally in the fully open state. Then, when hot water supply is started with the hot water supply valve fully opened or with its opening increased, hot water from the hot water supply valve that is fully opened or widened after hot water remaining in the mixed water pipe flows out, Since a large amount is supplied, the hot water outlet temperature is significantly higher than the target temperature. Furthermore, if control is performed to select a lower control gain in the state where this deviation is large, it takes a long time for the outlet heated water temperature to approach the target temperature. That is, when hot water is discharged from the hot water supply stopped state (at the time of cold start), hot water having a temperature higher than a desired hot water temperature is supplied.

この発明はこのような課題を解決するためなされたもの
で、給湯停止状態からの出湯が開始されたこと(コール
ドスタート)を検出し、その場合は予め設定した時間の
間、制御ゲインを高い状態に維持してバルブの開閉速度
を早めることで、全開もしくは開度大となっている給湯
バルブの開度を早い速度で調節し、目標温度よりも高い
湯水が供給される時間を短縮するようにした湯水混合装
置を提供することを目的とする。
The present invention has been made to solve such a problem, and detects that hot water supply has started from a hot water supply stop state (cold start), in which case the control gain is high for a preset time. By keeping the valve open and closed faster, the opening of the hot water supply valve that is fully opened or has a large opening can be adjusted at a high speed to shorten the time for supplying hot water higher than the target temperature. It is an object of the present invention to provide a hot and cold water mixing device.

(課題を解決するための手段) 前記課題を解決するためこの発明に係る湯水混合装置
は、第1図に示すように、混合水管に混合水管内の出湯
温度を検出する湯温検知手段を設け、この湯温検知手段
により検知された出湯温度と設定された目標温度との偏
差に基づいて混合水管に接続するバルブを駆動して湯と
水の混合割合を制御する湯水混合装置において、 利得が異なる複数の偏差−バルブ開閉速度制御特性を記
憶した記憶手段と、 バルブの開度を検出するバルブ開度検知手段と、 このバルブ開度検知手段により検出されたバルブ開度が
所定値を超え、かつ湯温検知手段により検出された出湯
温度が目標温度を超えた時(コールドスタート状態であ
ることを検出した時)、記憶手段から現在選択されてい
る利得よりも大きな利得の偏差−バルブ開閉速度制御特
性を選択して、選択した偏差−バルブ開閉速度制御特性
を予め設定した一定の時間の間保持した後に元の利得の
偏差−バルブ開閉速度制御特性を選択する特性選択保持
手段と、 この特性選択保持手段により選択保持された偏差−バル
ブ開閉速度制御特性に従い偏差に基づいてバルブ開閉速
度を決定するバルブ開閉速度決定手段と、 このバルブ開閉速度決定手段により決定されたバルブ開
閉速度でバルブを駆動する駆動手段 とを備えることを特徴とする。
(Means for Solving the Problems) In order to solve the above problems, in the hot and cold water mixing apparatus according to the present invention, as shown in FIG. 1, the hot water temperature detecting means for detecting the hot water temperature in the hot water mixing pipe is provided in the hot water mixing pipe. In the hot and cold water mixing device that controls the mixing ratio of hot water and water by driving the valve connected to the mixed water pipe based on the deviation between the hot water temperature detected by the hot water temperature detection means and the set target temperature, the gain is A plurality of different deviations-storage means for storing valve opening / closing speed control characteristics, valve opening detection means for detecting valve opening, and valve opening detected by the valve opening detection means exceeds a predetermined value, Further, when the hot water temperature detected by the hot water temperature detecting means exceeds the target temperature (when it is detected that the cold start state is detected), the deviation of the gain larger than the gain currently selected from the storage means is detected. And a characteristic selection holding means for selecting the valve opening / closing speed control characteristic and selecting the deviation-valve opening / closing speed control characteristic after holding the selected deviation-valve opening / closing speed control characteristic for a preset time. A valve opening / closing speed determining means for determining the valve opening / closing speed based on the deviation according to the deviation-valve opening / closing speed control characteristic selected and held by the characteristic selecting / holding means, and a valve opening / closing speed determined by the valve opening / closing speed determining means. Drive means for driving the valve.

(作用) 記憶手段には利得が異なる複数の偏差−バルブ開閉速度
制御特性が格納されている。
(Operation) The storage means stores a plurality of deviation-valve opening / closing speed control characteristics having different gains.

特性選択保持手段は、バルブ開度が所定値を超え、かつ
出湯温度が目標温度を超えた時(コールドスタート状態
であることを検出した時)に、現在選択されている利得
よりも大きい利得の偏差−バルブ開閉速度制御特性を選
択して、選択した特性をタイマ等で設定した一定の時間
の間保持した後に、元の偏差−バルブ開閉速度制御特性
に戻す。
When the valve opening exceeds the predetermined value and the outlet heated water temperature exceeds the target temperature (when it is detected that the cold start state is detected), the characteristic selection holding means provides a gain larger than the currently selected gain. The deviation-valve opening / closing speed control characteristic is selected, the selected characteristic is held for a certain period of time set by a timer or the like, and then the original deviation-valve opening / closing speed control characteristic is restored.

バルブ開度決定手段は、特性選択保持手段によって選択
保持された偏差−バルブ開閉速度制御特性と偏差に基づ
いてバルブ開閉速度を決定する。駆動手段は決定された
バルブ開閉速度に基づいてバルブの開度を調節する。
The valve opening degree determining means determines the valve opening / closing speed based on the deviation-valve opening / closing speed control characteristic and the deviation selectively held by the characteristic selecting / holding means. The drive means adjusts the opening degree of the valve based on the determined valve opening / closing speed.

よって、バルブ開度が所定値を超え、かつ出湯温度が目
標温度を超えた時(コールドスタート状態であることを
検出した時)に、その時点から一定の時間の間は帰還制
御系の利得が大きく設定されので、バルブの開度が高速
に調節される。これにより、全開もしくは開度大となっ
ている給湯バルブの開度を出湯開始時点から一定時間の
間早い速度で調節することができるので、目標温度より
も高い湯水が供給される時間を短縮することができる。
Therefore, when the valve opening exceeds the specified value and the hot water outlet temperature exceeds the target temperature (when it detects that the cold start condition is detected), the gain of the feedback control system is kept constant for a certain period from that point. Since it is set to a large value, the valve opening is adjusted at high speed. As a result, the opening of the hot water supply valve that is fully opened or has a large opening can be adjusted at a high speed for a certain period of time from the start of tapping, thus shortening the time for supplying hot water higher than the target temperature. be able to.

出湯開始から一定時間経過後、すなわち、制御利得の大
きい状態で全開もしくは開度大となっている給湯バルブ
の開度を高速で調節した後は、元の(制御利得の小さ
い)偏差−バルブ開閉速度制御特性に戻すので、出湯温
度のハンチングが生じにくい安定した湯温制御がなされ
る。
After a certain period of time has passed from the start of hot water discharge, that is, after the opening of the hot water supply valve that is fully opened or has a large opening with a large control gain is adjusted at high speed, the original deviation (small control gain) -valve opening / closing Since the speed is returned to the speed control characteristic, stable hot water temperature control in which hunting of the hot water temperature is unlikely to occur is performed.

(実施例) 以下、この発明の実施例を図面に基づいて説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.

第2図から第5図はこの発明の一実施例にかかる湯水混
合装置を表し、第2図が全体概略図、第3図がフローチ
ャート、第4図がタイミングチャート、第5図がデータ
テーブルである。
2 to 5 show a hot and cold water mixing apparatus according to an embodiment of the present invention, FIG. 2 is an overall schematic view, FIG. 3 is a flow chart, FIG. 4 is a timing chart, and FIG. 5 is a data table. is there.

第2図において、(11)は比較的高温の湯が供給される
給湯管、(12)は比較的低温の水が供給される給水管、
(13)は給湯管(11)内の湯の流量を調節する給湯バル
ブ、(14)は給湯バルブ(13)に連動して給水管(12)
内の水の流量を調節する給水バルブ、(15)は給湯バル
ブ(13)を経た湯と給水バルブ(14)を経た水とを混合
してカラン(16)へ導く混合水管、(17)は給湯バルブ
(13)のバルブ開度を検出するポテンシオメータ(バル
ブ開度検知手段)、(18)は混合水管(15)内の混合水
の温度(実湯温)を検出する温度センサ(湯温検知手
段)、(19)は目標温度(ts)の設定並びに装置の駆動
・停止等の指令を行う操作器、(20)はCPUおよびROM等
を有したワンチップマイコンから構成されて操作器(1
9)の操作、ポテンシオメータ(17)および温度センサ
(18)等の出力信号に基づいた制御を行う制御器、(2
1)は駆動回路およびモータ等を有し制御器(20)の出
力信号に基づいてバルブ(13)、(14)を駆動する駆動
器である。制御器(20)のワンチップマイコンのROMに
は、第5図に示すように実温湯(t)と目標湯温(ts)
との偏差(△t)に応じてバルブの開閉速度(R)を特
定可能な2種の制御特性(A)、(B)が記憶されてい
る。なお、言うまでも無いが、制御特性は3種以上をRO
Mに記憶させることも可能である。この制御器(20)
は、記憶手段(g)、特性選択保持手段(i)およびバ
ルブ開閉速度決定手段(j)に相当し駆動器(21)は駆
動手段(k)に相当する。
In FIG. 2, (11) is a hot water supply pipe to which relatively high temperature hot water is supplied, (12) is a water supply pipe to which relatively low temperature water is supplied,
(13) is a hot water supply valve for adjusting the flow rate of hot water in the hot water supply pipe (11), and (14) is a water supply pipe (12) linked with the hot water supply valve (13).
A water supply valve that adjusts the flow rate of water in the inside, (15) is a mixing water pipe that mixes the hot water that has passed through the hot water supply valve (13) and the water that has passed through the water supply valve (14) to lead to the karan (16), (17) A potentiometer (valve opening detection means) for detecting the valve opening of the hot water supply valve (13), and (18) a temperature sensor (hot water temperature) for detecting the temperature (actual hot water temperature) of the mixed water in the mixed water pipe (15). (Detection means), (19) is an operating device for setting a target temperature (ts) and instructing driving / stopping of the device, and (20) is an operating device composed of a one-chip microcomputer having a CPU and a ROM ( 1
Controller that performs control based on the output signals of the potentiometer (17) and temperature sensor (18), etc.
1) is a driver which has a drive circuit, a motor, etc., and drives valves (13) and (14) based on the output signal of a controller (20). In the ROM of the one-chip microcomputer of the controller (20), the actual hot water (t) and the target hot water temperature (ts) are stored in the ROM as shown in FIG.
Two types of control characteristics (A) and (B) capable of specifying the opening / closing speed (R) of the valve in accordance with the deviation (Δt) from and are stored. Needless to say, RO has three or more control characteristics.
It is also possible to store in M. This controller (20)
Corresponds to the storage means (g), the characteristic selection holding means (i) and the valve opening / closing speed determining means (j), and the driver (21) corresponds to the driving means (k).

この湯水混合装置は、第3図のフローチャートに示す一
連の処理を実行して出温温度の制御を行う。
This hot and cold water mixing apparatus executes a series of processes shown in the flowchart of FIG.

まず、ステッヴ(P1)において小さな利得の制御特性
(B)が初期化され次に、ステップ(P2)において、ポ
テンシオメータ(17)の出力信号に基づいて給湯バルブ
(13)のバルブ開度(θ)が最大開度(θmax)か否か
換言すれば給湯バルブ(13)が全開か否かを判断し、給
湯バルブ(13)が全開であればステップ(P3)の処理を
行い、給湯バルブ(13)が全開でなければステップ
(P5)の処理を行う。なお、この給湯バルブ(13)のバ
ルブ開度(θ)は、駆動器(21)のモータの出力軸の回
転角度によっても検知できることは言うまでも無い。ス
テップ(P3)では、温度センサ(18)の出力信号に基づ
いて出湯温度(t)が目標温度(ts)より大きいか否か
を判断し、出湯温度(t)が目標温度(ts)を超えてい
るとステプ(P4)の処理を行い、また、出湯温度(t)
が目標温度(ts)以下であればステップ(P5)の処理を
行う。ステップ(P4)では、利得の大きい偏差−バルブ
開閉速度制御特性(A)を選択するとともに、特性保持
時間(TA)計時用のタイマをリセットして計時を開始す
る。すなわち、このステップ(P4)によって、コールド
スタート時等の給湯バルブ(13)が全開でかつ出湯温度
(t)が目標温度(ts)より大きい時に大きな利得の制
御特性(A)が選択され、そして、後述するようにタイ
マに設定された時間(TA)の間この特性(A)が保持さ
れる。したがって、この制御特性(A)に従い偏差(△
t)に基づいて検索されるバルブ開閉速度(R)も大き
く、各バルブ(13)(14)は駆動器(21)により高速で
駆動され、第4図に示すように、コールドスタート時等
にあっても出湯温度(t)を速やかに目標温度(ts)へ
収束させることができる。
First, the initialization control characteristics of the small gain (B) is in Sutevvu (P 1) Next, the valve opening degree of the step in (P 2), hot water supply valve (13) based on the output signal of the potentiometer (17) (Θ) is the maximum opening (θmax) In other words, it is determined whether the hot water supply valve (13) is fully opened. If the hot water supply valve (13) is fully opened, the process of step (P 3 ) is performed, hot water supply valve (13) performs the process of step (P 5) if not fully open. Needless to say, the valve opening degree (θ) of the hot water supply valve (13) can be detected by the rotation angle of the output shaft of the motor of the driver (21). In step (P 3 ), it is determined whether or not the tap water temperature (t) is higher than the target temperature (ts) based on the output signal of the temperature sensor (18), and the tap water temperature (t) is equal to the target temperature (ts). If it exceeds the limit, the step (P 4 ) is processed, and the hot water temperature (t)
If is less than or equal to the target temperature (ts), the process of step (P 5 ) is performed. In step (P 4), a large deviation of the gain - while selecting the valve opening and closing speed control characteristic (A), it starts timing by resetting the timer of the characteristic retention time (T A) for counting. That is, in this step (P 4 ), the control characteristic (A) with a large gain is selected when the hot water supply valve (13) is fully opened and the tapping temperature (t) is higher than the target temperature (ts) at the cold start. Then, as will be described later, this characteristic (A) is held for the time (T A ) set in the timer. Therefore, according to this control characteristic (A), the deviation (Δ
The valve opening / closing speed (R) retrieved based on t) is also large, and the valves (13) and (14) are driven at high speed by the driver (21). As shown in FIG. Even if there is, the tap water temperature (t) can be quickly converged to the target temperature (ts).

ステップ(P5)においては、大きな利得の偏差−バルブ
開閉速度制御特性(A)が選択されているか否かを判断
し、上記制御特性(A)が選択されているとコールドス
タート時等の制御中であると判断しステップ(P6)の処
理を行い、上記制御特性(A)が選択されていなければ
コールドスタートではないと判断しステップ(P2)に戻
る。したがって、給湯バルブ(13)が全開でなければ各
バルブ(13)(14)のバルブ開閉速度(R)は制御特性
(B)に従い偏差(△t)に基づき検索されて小さくな
り、出湯温度(t)の変化が小さくなって使用感を損う
ことも無くなる。ステップ(P6)では、前述したステッ
プ(P4)の処理で計時を開始したタイマが所定時間
(TA)の計時を完了したか否か、換言すれば上記特性
(A)が所定時間(TA)保持されたか否かを判断する。
そして、上記所定時間(TA)の計時が完了しているとス
テップ(P7)で小さな利得の偏差−バルブ開閉速度制御
特性(B)を選択し、また、上記所定時間(TA)の計時
が未完了であれば、再度一連の処理を繰り返す。したが
って第4図に示すように、大きな利得の制御特性(A)
は上記所定時間(TA)の間のみ保持され、出湯温度
(t)が目標温度(ts)に対して変動するいわゆるハン
チングの発生が防止できる。
In step (P 5 ), it is judged whether or not the large gain deviation-valve opening / closing speed control characteristic (A) is selected, and if the control characteristic (A) is selected, control at cold start or the like is performed. If it is determined that it is in the middle, the process of step (P 6 ) is performed. If the control characteristic (A) is not selected, it is determined that it is not a cold start and the process returns to step (P 2 ). Therefore, if the hot water supply valve (13) is not fully opened, the valve opening / closing speed (R) of each valve (13) (14) is searched for based on the deviation (Δt) according to the control characteristic (B) and becomes small, and the hot water temperature ( The change in t) becomes small and the usability is not impaired. In step (P 6 ), it is determined whether or not the timer, which has started time counting in the process of step (P 4 ), completes counting of a predetermined time (T A ), in other words, the characteristic (A) is the predetermined time ( T A ) Judge whether or not it was retained.
Then, when the time measurement for the predetermined time (T A ) is completed, a small gain deviation-valve opening / closing speed control characteristic (B) is selected in step (P 7 ), and the predetermined time (T A ) If the time measurement is not completed, the series of processes is repeated again. Therefore, as shown in FIG. 4, a large gain control characteristic (A)
Is held only for the predetermined time (T A ) and the occurrence of so-called hunting in which the outlet heated water temperature (t) fluctuates with respect to the target temperature (ts) can be prevented.

(発明の効果) 以上説明したようにこの発明に係る湯水混合装置は、バ
ルブ開度が所定値を超え、かつ出湯温度が目標温度を超
えた時(コールドスタート状態であることを検出した
時)に、現在選択されている利得よりも大きな利得の偏
差−バルブ開閉速度制御特性を選択して、選択した特性
をタイマ等で設定した一定の時間の間保持した後に、元
の偏差−バルブ開閉速度制御特性に戻す構成としたの
で、混合水管内の湯水の温度が低下し、これに伴って湯
側のバルブが全開もしくは開度大となった状態で給湯が
開始され、湯側開度が大であるため目標温度よいも高温
の湯が供給され始めたことを検出した時点から一定時間
の間は、バルブの開度を高速に調節するので、目標温度
よりも高い温度の出湯がなされる時間を短縮することが
できる。また、一定時間経過後は元の利得の偏差−バル
ブ開閉速度制御特性に戻すので、出湯温度のハンチング
が生じにくい安定した湯温制御がなされる。
(Effects of the Invention) As described above, in the hot and cold water mixing apparatus according to the present invention, when the valve opening exceeds the predetermined value and the hot water discharge temperature exceeds the target temperature (when it is detected that it is in the cold start state). In addition, after selecting the deviation-valve opening / closing speed control characteristic with a gain larger than the currently selected gain and holding the selected characteristic for a certain time set by a timer, etc., the original deviation-valve opening / closing speed Since the configuration is restored to the control characteristics, the temperature of the hot water in the mixed water pipe decreases, and in response to this, hot water supply is started with the hot water valve fully opened or the opening is large, and the hot water opening is large. Therefore, the opening of the valve is adjusted at a high speed for a certain period from the time when it is detected that hot water at the target temperature is starting to be supplied, so it is the time when hot water at a temperature higher than the target temperature is discharged. Can be shortened . Further, since the original gain deviation-valve opening / closing speed control characteristic is restored after a lapse of a certain time, stable hot water temperature control is achieved in which hunting of the hot water outlet temperature is unlikely to occur.

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

第1図はこの発明にかかる湯水混合装置の構成図であ
る。第2図から第5図はこの発明の一実施例にかかる湯
水混合装置を示し、第2図が概略全体図、第3図がフロ
ーチャート、第4図がタイミングチャート、第5図が偏
差−バルブ開閉速度制御特性を表すデータテーブルであ
る。 11……給湯管(b)、12……給水管(d) 13……給湯バルブ(a)、14……給水バルブ(c) 15……混合水管(e) 17……ポテンシオメータ(バルブ開度検知手段(h)) 18……温度センサ(湯温検知手段(f)) 19……操作器 20……制御器(記憶手段(g),特性選択保持手段
(i),バルブ開閉速度決定手段(j)) 21……駆動器(駆動手段(k))
FIG. 1 is a block diagram of a hot and cold water mixing apparatus according to the present invention. 2 to 5 show a hot and cold water mixing apparatus according to an embodiment of the present invention, FIG. 2 is a schematic overall view, FIG. 3 is a flowchart, FIG. 4 is a timing chart, and FIG. 5 is a deviation-valve. It is a data table showing opening / closing speed control characteristics. 11 …… Hot water supply pipe (b), 12 …… Water supply pipe (d) 13 …… Hot water supply valve (a), 14 …… Water supply valve (c) 15 …… Mixed water pipe (e) 17 …… Potentiometer (valve open Degree detecting means (h)) 18 ... Temperature sensor (hot water temperature detecting means (f)) 19 ... Manipulator 20 ... Controller (memory means (g), characteristic selection holding means (i), valve opening / closing speed determination) Means (j)) 21 ... Driver (driving means (k))

フロントページの続き (72)発明者 林 恵司 福岡県北九州市小倉北区中島2丁目1番1 号 東陶機器株式会社内 (56)参考文献 特開 昭60−3705(JP,A) 実開 昭52−129061(JP,U)Front page continuation (72) Keiji Hayashi, Inventor Keiji Hayashi, 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City, Fukuoka Prefecture (56) References JP-A-60-3705 (JP, A) 52-129061 (JP, U)

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】混合水管に該混合水管内の出湯温度を検出
する湯温検知手段を設け、該湯温検知手段により検知さ
れた出湯温度と設定された目標温度との偏差に基づいて
前記混合水管に接続するバルブを駆動して湯と水との混
合割合を制御する湯水混合装置において、 利得が異なる複数の偏差−バルブ開閉速度制御特性を記
憶した記憶手段と、 前記給湯バルブのバルブ開度を検出するバルブ開度検知
手段と、 該バルブ開度検知手段により検出されたバルブ開度が所
定値を超え、かつ前記湯温検知手段により検出された出
湯温度が前記目標温度を超えた時、前記記憶手段から現
在選択されている利得よりも大きな利得の偏差−バルブ
開閉速度制御特性を選択して該偏差−バルブ開閉速度制
御特性を予め設定した一定の時間の間保持した後に元の
利得の偏差−バルブ開閉速度特性を選択する特性選択保
持手段と、 該特性選択保持手段により選択保持された偏差−バルブ
開閉速度制御特性に従い前記偏差に基づいてバルブ開閉
速度を検索するバルブ開閉速度決定手段と、 該バルブ開閉速度決定手段により検索されたバルブ開閉
速度で前記給湯バルブと給水バルブとを連動して駆動す
る駆動手段と、 を備えることを特徴とする湯水混合装置。
1. A mixed water pipe is provided with hot water temperature detecting means for detecting a hot water temperature in the mixed water pipe, and the mixing is performed based on a deviation between a hot water temperature detected by the hot water temperature detecting means and a set target temperature. In a hot and cold water mixing apparatus for controlling a mixing ratio of hot water and water by driving a valve connected to a water pipe, a storage unit storing a plurality of deviation-valve opening / closing speed control characteristics having different gains, and a valve opening degree of the hot water supply valve And a valve opening degree detection means for detecting the valve opening degree, the valve opening degree detected by the valve opening degree detection means exceeds a predetermined value, and the outlet hot water temperature detected by the hot water temperature detection means exceeds the target temperature, The deviation-valve opening / closing speed control characteristic having a gain larger than the gain currently selected from the storage means is selected, and the deviation-valve opening / closing speed control characteristic is held for a preset period of time. Characteristic selection holding means for selecting the obtained deviation-valve opening / closing speed characteristic, and valve opening / closing speed determination for searching the valve opening / closing speed based on the deviation according to the deviation-valve opening / closing speed control characteristic selected and held by the characteristic selection holding means A hot and cold water mixing apparatus comprising: a means and a driving means that drives the hot water supply valve and the water supply valve in conjunction with each other at the valve opening and closing speed retrieved by the valve opening and closing speed determining means.
JP61196355A 1986-08-01 1986-08-21 Hot water mixing device Expired - Lifetime JPH073643B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP61196355A JPH073643B2 (en) 1986-08-21 1986-08-21 Hot water mixing device
KR1019870008349A KR900008067B1 (en) 1986-08-01 1987-07-30 Hot water and cold water mixer
US07/080,749 US4739923A (en) 1986-08-01 1987-07-31 Hot/cold water mixing device
CA000543559A CA1272707A (en) 1986-08-01 1987-07-31 Hot/cold water mixing device
EP87306862A EP0259969B1 (en) 1986-08-01 1987-08-03 Hot/cold water mixing device
DE8787306862T DE3782787T2 (en) 1986-08-01 1987-08-03 MIXING DEVICE FOR HOT AND COLD WATER.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61196355A JPH073643B2 (en) 1986-08-21 1986-08-21 Hot water mixing device

Publications (2)

Publication Number Publication Date
JPS6352219A JPS6352219A (en) 1988-03-05
JPH073643B2 true JPH073643B2 (en) 1995-01-18

Family

ID=16356459

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61196355A Expired - Lifetime JPH073643B2 (en) 1986-08-01 1986-08-21 Hot water mixing device

Country Status (1)

Country Link
JP (1) JPH073643B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02263037A (en) * 1989-03-31 1990-10-25 Harman Co Ltd Hot water feeding device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5512244Y2 (en) * 1976-03-29 1980-03-17
JPS603705A (en) * 1983-06-21 1985-01-10 Matsushita Electric Ind Co Ltd Control valve device

Also Published As

Publication number Publication date
JPS6352219A (en) 1988-03-05

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