JP2962043B2 - Hot water mixing control device - Google Patents
Hot water mixing control deviceInfo
- Publication number
- JP2962043B2 JP2962043B2 JP13333192A JP13333192A JP2962043B2 JP 2962043 B2 JP2962043 B2 JP 2962043B2 JP 13333192 A JP13333192 A JP 13333192A JP 13333192 A JP13333192 A JP 13333192A JP 2962043 B2 JP2962043 B2 JP 2962043B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- hot water
- amount
- mixing
- control
- 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 - Fee Related
Links
Landscapes
- Temperature-Responsive Valves (AREA)
- Multiple-Way Valves (AREA)
- Magnetically Actuated Valves (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【産業上の利用分野】本発明は湯と水の混合比率を調節
し最適な混合湯温を得る湯水混合制御装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing control apparatus for adjusting a mixing ratio of hot water and water to obtain an optimum mixed hot water temperature.
【0002】[0002]
【従来の技術】従来この種の湯水混合装置は図9に示す
ようなものがあった。(例えば、特開平1−31227
9号公報)図9において、1は湯流路、2は水流路であ
り、各流路に関連して自動調圧弁が設けられている。自
動調圧弁3は、湯流路1の1次圧力PH1を減圧する湯
側弁体4、湯側弁座5と、水流路2の1次圧力PC1を
減圧する水側弁体6、水側弁座7と、湯側弁体4と水側
弁体6を連結する弁軸8と、湯と水の減圧後の1次圧P
H1、PC1の圧力差で動作するピストン9とで構成さ
れておる。そして、湯または水の圧力が急変してもその
圧力で自動調圧弁3が移動し、湯と水の2次圧PH2と
PC2とが常に等しく保たれるように作用する。さらに
弁軸8にバイアス手段10が設けられ、バイアス手段1
0は弁軸8の端部に結合され、ボビン11とそのボビン
11上に巻回され絶縁されたコイル12およびコイル1
2をはさむように設けられた永久磁石13を有し、前記
コイル12は可撓部14を介して制御手段18に接続さ
れている。2. Description of the Related Art Conventionally, there has been a water / water mixing apparatus of this kind as shown in FIG. (For example, see JP-A-1-31227.
No. 9) In FIG. 9, 1 is a hot water flow path, 2 is a water flow path, and an automatic pressure regulating valve is provided in connection with each flow path. The automatic pressure regulating valve 3 includes a hot water side valve body 4 and a hot side valve seat 5 for reducing the primary pressure PH1 of the hot water flow path 1, a water side valve body 6 for reducing the primary pressure PC1 of the water flow path 2, and a water side. A valve seat 7, a valve shaft 8 connecting the hot water side valve body 4 and the water side valve body 6, and a primary pressure P after decompression of hot water and water.
H1 and a piston 9 that operates with a pressure difference between PC1 and H1. Then, even if the pressure of the hot water or the water changes suddenly, the automatic pressure regulating valve 3 moves at that pressure, and acts so that the secondary pressure PH2 of the hot water and the water and the PC2 are always kept equal. Further, a bias means 10 is provided on the valve shaft 8, and the bias means 1 is provided.
0 is connected to the end of the valve shaft 8 and the bobbin 11 and the coil 12 and the coil 1 wound on the bobbin 11 and insulated.
The coil 12 is connected to a control means 18 via a flexible portion 14.
【0003】制御手段18からコイル12に電流を流す
と、その電流は永久磁石13によって発生している磁界
を横切るのでフレミングの法則によって弁軸8にバイア
ス力が付与される。このためバイアス力の分だけ自動調
圧点がずれ、例えば湯と水の2次圧PH2とPC2とが
2:1の点で常に調圧されるようになり、結果的に出湯
温度が高くなる。このようにコイル12への電流を変化
することにより混合湯温を変える。制御手段18はコイ
ル12に電流を流す際に微小交流信号を重畳している。
これはバイアス手段10の磁気回路のヒステリシス特性
や駆動開始時の摺動抵抗を軽減するためである。19は
湯と水の混合部であり、混合後は流量調節開閉弁20を
介して出湯されるが、その温度は混合湯温検出手段(例
えばサーミスタ)15によって、またその流量は流量検
出手段16によって検出され、設定手段17の値に一致
させるべく制御手段18がバイアス手段10と流量調節
開閉弁駆動手段21を付勢し温度調節を行なう。When a current flows from the control means 18 to the coil 12, the current crosses the magnetic field generated by the permanent magnet 13, so that a bias force is applied to the valve shaft 8 by Fleming's law. For this reason, the automatic pressure adjustment point is shifted by the amount of the bias force. For example, the secondary pressure PH2 and the PC2 of hot water and water are constantly adjusted at a point of 2: 1. As a result, the tapping temperature increases. . Thus, the temperature of the mixed hot water is changed by changing the current to the coil 12. The control means 18 superimposes a minute AC signal when a current flows through the coil 12.
This is to reduce the hysteresis characteristics of the magnetic circuit of the bias means 10 and the sliding resistance at the start of driving. Reference numeral 19 denotes a mixing section of hot water and water. After mixing, the hot water is discharged through a flow rate control opening / closing valve 20. The control means 18 biases the bias means 10 and the flow rate control on / off valve driving means 21 to adjust the temperature so as to match the value of the setting means 17.
【0004】[0004]
【発明が解決しようとする課題】しかしながら上記のよ
うな構成では、自動調圧弁3の駆動量が小さいと湯側弁
体4と湯側弁座5の間が狭くなることが多い。この場合
は自動調圧弁3の感度は高くなり少しだけ動作しても混
合湯温は大きく変化し通常のゲインではハンチングを発
生してしまう。同様に駆動量が大きく水側弁体6と水側
弁座7の間が狭くなっている場合も自動調圧弁3の感度
は高くなり、少しだけ動作しても混合湯温は大きく変化
し通常のゲインではハンチングを発生してしまう。However, in the above configuration, if the driving amount of the automatic pressure regulating valve 3 is small, the space between the hot-water-side valve element 4 and the hot-water-side valve seat 5 often becomes narrow. In this case, the sensitivity of the automatic pressure regulating valve 3 is increased, and even if the valve is slightly operated, the temperature of the mixed hot water greatly changes, and hunting occurs at a normal gain. Similarly, when the drive amount is large and the space between the water-side valve element 6 and the water-side valve seat 7 is narrow, the sensitivity of the automatic pressure regulating valve 3 is high, and even if the valve is slightly operated, the temperature of the mixed hot water changes greatly, and the normal operation is performed. Hunting occurs at a gain of.
【0005】また、前記圧力差等によって駆動量にかか
わらず湯側、水側どちらかの弁体と弁座が接近して自動
調圧弁3の感度が高くなり、そのままのゲインでは弁体
と弁座が高速で衝突し機械的に変形を生じてしまうこと
がある。[0005] Further, regardless of the driving amount due to the pressure difference or the like, the valve body and the valve seat of either the hot water side or the water side come close to each other, and the sensitivity of the automatic pressure regulating valve 3 is increased. The seat may collide at a high speed and mechanically deform.
【0006】本発明はかかる従来の課題を解消するもの
で駆動量の大きさにより駆動量の時間的変化量を調節し
混合弁の安定を図ることを第1の目的とする。The present invention has been made to solve the above-mentioned conventional problem, and has as its first object to stabilize a mixing valve by adjusting a temporal change amount of a drive amount according to a magnitude of a drive amount.
【0007】本発明の第2の目的は弁位置検出手段を用
い湯側もしくは水側の弁体と弁座が接近すると混合弁制
御手段の駆動量の時間的変化量を調節して混合弁の安定
を図り弁体や弁座が衝突により変形しないようにするこ
とである。A second object of the present invention is to use a valve position detecting means to adjust the temporal variation of the driving amount of the mixing valve control means when the hot water side or water side valve element and the valve seat come close to each other to adjust the mixing valve. The purpose is to ensure stability and prevent the valve body and valve seat from being deformed by collision.
【0008】[0008]
【課題を解決するための手段】上記課題を解決するため
に本発明の湯水混合制御装置は、湯流路および水流路
と、前記湯流路および前記水流路の流量を調節する混合
弁と、前記混合弁を駆動する混合弁駆動手段と、前記混
合弁駆動手段に駆動信号を出力する制御手段とからな
り、前記制御手段は駆動量の大きさに応じて駆動量の時
間的変化量を調節する混合弁制御手段を有する構成とし
たものである。According to the present invention, there is provided a hot and cold water mixing control apparatus comprising: a hot water flow path and a water flow path; a mixing valve for adjusting flow rates of the hot water flow path and the water flow path; A mixing valve driving unit that drives the mixing valve; and a control unit that outputs a driving signal to the mixing valve driving unit. The control unit adjusts a temporal change amount of the driving amount according to the magnitude of the driving amount. And a mixing valve control means.
【0009】また第2の目的を達成するために本発明の
湯水混合制御装置は、湯流路および水流路と、前記湯流
路および前記水流路の流量を調節する混合弁と、前記混
合弁を駆動する混合弁駆動手段と、前記混合弁の弁位置
を検出する弁位置検出手段と、前記混合弁駆動手段に駆
動信号を出力する制御手段とからなり、前記制御手段は
前記弁位置検出手段の信号により駆動量の時間的変化量
を調節する混合弁制御手段を有する構成としたものであ
る。According to another aspect of the present invention, there is provided a hot water mixing control apparatus comprising: a hot water flow path and a water flow path; a mixing valve for adjusting flow rates of the hot water flow path and the water flow path; Valve driving means for driving the mixing valve, valve position detecting means for detecting the valve position of the mixing valve, and control means for outputting a drive signal to the mixing valve driving means, wherein the control means is the valve position detecting means And a mixing valve control means for adjusting a temporal change amount of the driving amount by the signal of (1).
【0010】[0010]
【作用】本発明は、駆動量の大きさにより駆動量の時間
的変化量を調節し混合弁の安定を図る。According to the present invention, the temporal variation of the drive amount is adjusted according to the magnitude of the drive amount to stabilize the mixing valve.
【0011】さらに、弁位置検出手段を用い湯側もしく
は水側の弁体と弁座が接近すると混合弁制御手段の駆動
量の時間的変化量を調節して混合弁の安定を図り弁体や
弁座が衝突により変形しないようにすることである。When the valve seat on the hot water side or the water side approaches the valve seat using the valve position detecting means, the amount of change in the driving amount of the mixing valve control means with time is adjusted to stabilize the mixing valve. The purpose is to prevent the valve seat from being deformed by collision.
【0012】[0012]
【実施例】以下本発明の一実施例を図面を用いて説明す
る。図1は湯水混合制御装置の断面図で、従来例の図9
と同一部分には同一符号を付して詳細な説明を省略して
いる。22は付勢手段で、自動調圧弁3と付勢手段22
で混合弁23を形成する。24は前記付勢手段22の力
と対向して可変バイアス力を混合弁23に付与する混合
弁駆動手段である。混合弁駆動手段24は、磁性体から
なる第1のプランジャ25と、前記第1のプランジャ2
5の周りに防水および絶縁された第1のコイル26を有
し、前記第1のコイル26は制御手段18に接続されて
いる。混合湯温は混合湯温検出手段15によって検出す
る。40は弁位置検出手段で、ここでは一例として差動
トランスをもちいている。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a hot and cold water mixing control device, and FIG.
The same reference numerals are used to denote the same parts, and detailed description is omitted. Reference numeral 22 denotes an urging means, which includes the automatic pressure regulating valve 3 and the urging means 22.
Forms the mixing valve 23. Numeral 24 denotes a mixing valve driving means for applying a variable bias force to the mixing valve 23 in opposition to the force of the urging means 22. The mixing valve driving means 24 includes a first plunger 25 made of a magnetic material and the first plunger 2.
5 has a first coil 26 which is waterproof and insulated, said first coil 26 being connected to the control means 18. The mixed hot water temperature is detected by the mixed hot water temperature detecting means 15. Numeral 40 denotes a valve position detecting means, which uses a differential transformer as an example here.
【0013】混合湯の流量は混合部19より下流におい
て流量調節開閉弁20により調節する。流量調節開閉弁
20は弁きょう体27と、この弁きょう体内に流量を調
節する円錐状の流量制御弁体28とそれに対応する弁座
29を設けている。流量制御弁体28と流体の1次圧
(混合部19の圧力)とバランスをとるため、可撓性受
圧体としての溝付ダイヤフラム30を流量制御弁体28
と弁きょう体27の間に連結しており、さらに溝30a
を深くして、流量制御弁体28のリフト量にかかわら
ず、有効受圧面積が前記弁座29の口径と常に等しくな
るように構成している。ダイヤフラム30で1次側と完
全に仕切られた背圧室31と前記流量制御弁体28の2
次側とは、連通孔32により連通している。流量制御弁
体28は、付勢手段としてのスプリング34により、便
座29に当接する方向に付勢されている。また、第2の
コイル35と、一方の端面を密閉したパイプ36があ
り、第2のコイル35への通電量により駆動される第2
のプランジャ37がパイプ36内を摺動する。第2のプ
ランジャ37はシャフト38を介して流量制御弁体28
と連動する構成となっている。第2のコイル35、パイ
プ36および第2のプランジャ37で流量調節開閉弁駆
動手段21を形成している。The flow rate of the mixed hot water is adjusted downstream of the mixing section 19 by a flow control on-off valve 20. The flow rate control on-off valve 20 is provided with a valve housing 27, a conical flow control valve body 28 for adjusting the flow rate in the valve housing, and a corresponding valve seat 29. In order to balance the flow control valve body 28 and the primary pressure of the fluid (the pressure of the mixing section 19), the grooved diaphragm 30 as a flexible pressure receiving body is connected to the flow control valve body 28.
And between the valve housing 27 and the groove 30a.
And the effective pressure receiving area is always equal to the diameter of the valve seat 29 regardless of the lift amount of the flow control valve body 28. The back pressure chamber 31 completely separated from the primary side by the diaphragm 30 and the flow control valve body 28
It communicates with the next side through a communication hole 32. The flow control valve body 28 is urged by a spring 34 as an urging means in a direction in which it comes into contact with the toilet seat 29. In addition, there is a second coil 35 and a pipe 36 having one end surface sealed, and the second coil 35 is driven by the amount of electricity supplied to the second coil 35.
Plunger 37 slides inside the pipe 36. The second plunger 37 is connected to the flow control valve body 28 via a shaft 38.
It is structured to work with. The second coil 35, the pipe 36, and the second plunger 37 form the flow rate adjusting on / off valve driving means 21.
【0014】上記構成において、制御手段18は第2の
コイル35への通電量を制御することにより流量を調節
するもので、流量を零(停止)にするには、制御手段1
8は第2のコイル35への通電を切ることで、スプリン
グ34により付勢された流量制御弁体28は便座29に
当接し、流体は流れなくなる。第2のコイル35に通電
すると、第2のプランジャ37を吸引あるいは押しだ
し、スプリング34の付勢力に対抗して、流量制御弁体
28をリフトさせ、流体(混合湯)が流れ始める。つま
り、制御手段18は第2のコイル35への通電量を変え
ることにより、流量制御弁体28を任意のリフト量に調
節し、流量を制御するものである。In the above arrangement, the control means 18 adjusts the flow rate by controlling the amount of current supplied to the second coil 35. To reduce the flow rate to zero (stop), the control means 18 controls the flow rate.
In 8, when the power supply to the second coil 35 is cut off, the flow control valve body 28 urged by the spring 34 comes into contact with the toilet seat 29, and the fluid stops flowing. When the second coil 35 is energized, the second plunger 37 is sucked or pushed out, the flow control valve body 28 is lifted against the urging force of the spring 34, and the fluid (mixed hot water) starts flowing. That is, the control means 18 adjusts the flow control valve body 28 to an arbitrary lift amount by changing the amount of current supplied to the second coil 35 to control the flow amount.
【0015】図2は制御手段18の例である。41は混
合湯温検出手段15と設定手段17の信号を入力し混合
弁23の駆動量を演算する混合弁制御手段、42は前記
混合弁制御手段41の信号により混合弁駆動手段(第1
のコイル)26の駆動量を設定する第1の駆動量設定手
段、43は設定手段17の信号を入力し流量調節開閉弁
20の駆動量を演算する流量調節開閉弁制御手段、44
は前記流量調節開閉弁制御手段43の信号により流量調
節開閉弁駆動手段21の駆動量を設定する第2の駆動量
設定手段である。FIG. 2 shows an example of the control means 18. 41 is a mixing valve control means for inputting signals from the mixed hot water temperature detecting means 15 and the setting means 17 to calculate a driving amount of the mixing valve 23, and 42 is a mixing valve driving means (first signal) based on a signal from the mixing valve control means 41.
A first drive amount setting means 43 for setting a drive amount of the coil 26; a flow control valve control means 43 for inputting a signal of the setting means 17 and calculating a drive amount of the flow control valve 20;
Is a second drive amount setting means for setting the drive amount of the flow control on / off valve drive means 21 based on a signal from the flow control on / off valve control means 43.
【0016】次に本発明の構成の動作を説明する。温度
調節を行なう場合、制御手段18から第1のコイル26
に電流を流すと、磁性体からなる第1のプランジャ25
はフレミングの法則により弁軸8にバイアス力を付与す
る。このバイアス力と付勢手段22の付勢力がつりあっ
たところで自動調圧弁3はバランスする。したがって、
第1のコイル26に流す電流を変化することにより自動
調圧弁3のバランス点を移動することができる。例え
ば、電流の小さい場合は付勢手段22の力の方が強いた
め湯側弁体4より水側弁体6の方が大きく開き、出湯温
度が低くなる。電流を大きくすると付勢手段22の力に
対向してプランジャ25を押し出すことにより湯側弁体
4が開きだし結果的に出湯温度が高くなる。Next, the operation of the configuration of the present invention will be described. When performing temperature control, the control unit 18 sends the first coil 26
When a current flows through the first plunger 25 made of a magnetic material,
Applies a biasing force to the valve shaft 8 according to Fleming's law. When the bias force and the urging force of the urging means 22 are balanced, the automatic pressure regulating valve 3 is balanced. Therefore,
By changing the current flowing through the first coil 26, the balance point of the automatic pressure regulating valve 3 can be moved. For example, when the current is small, the force of the urging means 22 is stronger, so that the water-side valve body 6 opens more widely than the hot-water-side valve body 4, and the tapping temperature decreases. When the current is increased, the plunger 25 is pushed out against the force of the urging means 22, whereby the hot-water-side valve body 4 is opened, and as a result, the hot-water temperature rises.
【0017】このようにして、制御手段18は混合湯温
検出手段15の信号と設定手段17の信号を入力するこ
とにより出湯温度が設定温度になるように混合弁制御手
段41、第1の駆動量設定手段42により第1のコイル
26に流す電流を可変し混合弁23を調節する。In this way, the control means 18 receives the signal from the mixed hot water temperature detecting means 15 and the signal from the setting means 17 so that the mixing valve control means 41 and the first drive unit control the temperature of the hot water to the set temperature. The amount of current flowing through the first coil 26 is varied by the amount setting means 42 to adjust the mixing valve 23.
【0018】通常の出湯を行っている場合は以上のよう
な方法で問題は生じないが、出湯温度が、供給される水
温に近い場合は混合する湯量が少なく、湯側弁体4と湯
側弁座5の間は大変狭くなっている。また湯流路1の湯
温が出湯温度に近い場合は反対に混合する水量が少な
く、水側弁体6と水側弁座7の間は大変狭くなってい
る。このような場合は混合弁を安定に維持するのが困難
でよくハンチングを生じてしまった。If the tapping temperature is close to the supplied water temperature, the amount of hot water to be mixed is small, and the hot water side valve body 4 and the hot water side have no problem. The space between the valve seats 5 is very narrow. On the other hand, when the temperature of the hot water in the hot water flow path 1 is close to the hot water temperature, the amount of water to be mixed is small, and the space between the water-side valve body 6 and the water-side valve seat 7 is very narrow. In such a case, it is difficult to stably maintain the mixing valve, and hunting often occurs.
【0019】そこで本発明は上記の現象を防ぐために次
のような手段を講じている。通常の出湯時においてはあ
らかじめ設定された温度(もしくは設定手段17により
設定した温度:以下設定温度Tsとする)に混合湯温検
出手段15により検出した温度が一致するように混合弁
制御手段41は駆動量を設定して第1の駆動量設定手段
42を介して第1のコイル26を流れる電流を調節して
いる。Therefore, the present invention takes the following measures to prevent the above phenomenon. At the time of normal tapping, the mixing valve control means 41 is controlled so that the temperature detected by the mixed hot water temperature detecting means 15 coincides with a preset temperature (or a temperature set by the setting means 17; hereinafter, referred to as a set temperature Ts). The drive amount is set to adjust the current flowing through the first coil 26 via the first drive amount setting means 42.
【0020】ここで供給湯温が変動した場合の制御動作
を図3のフローチャートと図4の出力特性図、図5の係
数特性図を用いて説明する。図3においてステップ10
0の温度制御ではまず、設定温度と混合湯温検出手段1
5の信号の差を求めてこれを偏差E(ステップ101)
とする。偏差Eを用いて制御量f(E)をステップ10
2で演算する。ここでf(E)はよく知られているPI
D制御やファジイ制御等どれを用いてもよく制御則の種
類は固定しない。駆動量をPとすると前回のサンプリン
グ時点で出力した駆動量はPn−1となる。この前回の
駆動量Pn−1を変数としてゲインの係数g(Pn−
1)をステップ103で演算する。そして制御量f
(E)をステップ104で係数g(Pn−1)倍し駆動
変化量ΔPを求める。ステップ105で前回の駆動量P
n−1にこのΔPを付加し駆動量Pとする。これを用い
て第1の駆動量設定手段40に信号を出し第1のコイル
26に流す電流を設定し駆動を行なう。この温度制御は
一定のサンプリング周期で繰り返し行なっている。The control operation when the supply hot water temperature fluctuates will be described with reference to the flowchart of FIG. 3, the output characteristic diagram of FIG. 4, and the coefficient characteristic diagram of FIG. Step 10 in FIG.
In the temperature control of 0, first, the set temperature and mixed hot water temperature detecting means 1
5 and obtains the difference E (step 101).
And The control amount f (E) is calculated using the deviation E in step 10.
Calculate with 2. Where f (E) is the well-known PI
Any of D control, fuzzy control, etc. may be used, and the type of control law is not fixed. Assuming that the driving amount is P, the driving amount output at the time of the previous sampling is Pn-1. The gain coefficient g (Pn−
1) is calculated in step 103. And the control amount f
(E) is multiplied by a coefficient g (Pn-1) in step 104 to obtain a drive change amount ΔP. In step 105, the previous drive amount P
This ΔP is added to n−1 to obtain a drive amount P. Using this, a signal is sent to the first drive amount setting means 40 to set the current flowing through the first coil 26, and drive is performed. This temperature control is repeatedly performed at a constant sampling cycle.
【0021】図4において、供給湯温Thが変動した場
合、駆動量がP01のように大きく図5においてb−c
間に入っているような場合は通常の制御でも出湯温度が
T01のように安定している。出湯温度が低いと駆動量
が小さくてすむ。図5のaーb間に入っているP02の
ような時は制御量を求める際にg(Pn−1)を用いな
いと混合弁の感度が高くなっているため駆動量はP02
のXのようになり出湯温度もT02のXのようにハンチ
ングを生じてしまう。g(Pn−1)を用いると駆動変
化量ΔPは小さくなるため駆動量はP02のYのように
なり感度の高い混合弁も安定して動作しT02のYのよ
うにハンチングを生じることなく出湯温度特性を維持す
ることが可能となる。具体的には図3のようにステップ
103で求める係数g(Pn−1)は湯側もしくは水側
の弁体と弁座が接近するような駆動量の場合は小さく
し、それ以外は1とする。上記の係数g(Pn−1)は
流量によって補正を加えることも可能である。In FIG. 4, when the supply hot water temperature Th fluctuates, the driving amount is large as shown by P01 and bc in FIG.
In the case where there is a gap, the tapping temperature is stable as in T01 even under normal control. When the tapping temperature is low, the amount of driving is small. In the case of P02 which is between a and b in FIG. 5, the drive amount is P02 because the sensitivity of the mixing valve is high unless g (Pn-1) is used in obtaining the control amount.
X, and the tapping temperature also causes hunting like X in T02. When g (Pn-1) is used, the driving change amount ΔP becomes small, so that the driving amount becomes like Y in P02, the highly sensitive mixing valve operates stably, and the tapping does not occur as in Y in T02 without hunting. Temperature characteristics can be maintained. Specifically, as shown in FIG. 3, the coefficient g (Pn-1) obtained in step 103 is reduced in the case of a drive amount such that the valve element on the hot water side or the water side approaches the valve seat, and 1 otherwise. I do. The coefficient g (Pn-1) can be corrected by the flow rate.
【0022】また本発明の他の実施例について図6、図
7、図8にしたがい説明する。なお、上記の実施例にお
ける図3のフローチャートと同一部分には同一符号を付
して詳細な説明を省略し異なる部分を中心に説明する。
前記圧力差等によって駆動量にかかわらず湯側、水側ど
ちらかの弁体と弁座が接近して自動調圧弁3の感度が高
くなり、そのままのゲインでは弁体と弁座が高速で衝突
し機械的に変形を生じてしまうことがある。そこで弁位
置を検出する弁位置検出手段40を用いて制御する方法
を以下に説明する。Another embodiment of the present invention will be described with reference to FIGS. 6, 7, and 8. FIG. The same parts as those in the flowchart of FIG. 3 in the above embodiment are denoted by the same reference numerals, detailed description is omitted, and different parts will be mainly described.
Regardless of the drive amount due to the pressure difference or the like, the valve body and the valve seat on either the hot side or the water side approach each other to increase the sensitivity of the automatic pressure regulating valve 3, and the valve body and the valve seat collide at high speed with the same gain. In some cases, it may be mechanically deformed. Therefore, a method of controlling using the valve position detecting means 40 for detecting the valve position will be described below.
【0023】図6においてステップ100の温度制御で
はまず、設定温度と混合湯温検出手段15の信号の差を
求めてこれを偏差E(ステップ101)とする。偏差E
を用いて制御量f(E)をステップ102で演算する。
ステップ106において差動トランスによる弁位置検出
手段40の信号により弁位置Rを検出する。この弁位置
Rを変数としてゲインの係数h(R)をステップ107
で演算する。そして制御量f(E)をステップ108で
係数h(R)倍し駆動変化量ΔPを求める。ステップ1
09で前回の駆動量Pn−1にこのΔPを付加し駆動量
Pとする。これを用いて第1の駆動量設定手段42に信
号を出し第1のコイル26に流す電流を設定し駆動を行
なう。この温度制御は一定のサンプリング周期で繰り返
し行なっている。In FIG. 6, in the temperature control of step 100, first, a difference between the set temperature and the signal of the mixed hot water temperature detecting means 15 is obtained, and this difference is set as a deviation E (step 101). Deviation E
Is used to calculate the control amount f (E) in step 102.
In step 106, the valve position R is detected from the signal of the valve position detecting means 40 by the differential transformer. Using the valve position R as a variable, the gain coefficient h (R) is calculated in step 107.
Calculate with. Then, in step 108, the control amount f (E) is multiplied by the coefficient h (R) to obtain the drive change amount ΔP. Step 1
In step 09, this ΔP is added to the previous drive amount Pn−1 to obtain a drive amount P. Using this, a signal is sent to the first drive amount setting means 42 to set the current flowing through the first coil 26 and drive is performed. This temperature control is repeatedly performed at a constant sampling cycle.
【0024】図7において、混合弁の位置Rが図8のR
1からR2に入っているような場合には通常の温度制御
でも供給湯温が変動しても対応でき出湯温度は図7の
(a)の如くT01のようになる。しかし、出湯温度が
低くて弁位置が図8の全閉位置R0からR1の間にある
場合は湯側弁体4と湯側弁座5が接近して弁感度が高く
なっている。このため駆動量の変化量を小さくし図7の
(b)の如くP2のように駆動量が変化するようにす
る。そうすると出湯温度は図7の(b)の如くT02の
ように安定した温度を維持することができる。さらに駆
動量を小さくしているため弁体と弁座が早い速度で衝突
することがなく弁の機械的変形を生じる危険性がなくな
る。In FIG. 7, the position R of the mixing valve is set to R in FIG.
In the case where the temperature falls within the range from 1 to R2, even if the temperature of the supplied hot water fluctuates even with normal temperature control, the hot water temperature becomes T01 as shown in FIG. 7A. However, when the tapping temperature is low and the valve position is between the fully closed positions R0 and R1 in FIG. 8, the hot-side valve body 4 and the hot-side valve seat 5 are close to each other, and the valve sensitivity is high. For this reason, the amount of change in the drive amount is reduced so that the drive amount changes as indicated by P2 in FIG. 7B. Then, the tapping temperature can be maintained at a stable temperature like T02 as shown in FIG. 7B. Further, since the driving amount is reduced, the valve body and the valve seat do not collide at a high speed, and the risk of mechanical deformation of the valve is eliminated.
【0025】[0025]
【発明の効果】以上のように本発明の湯水混合制御装置
によれば、前回のサンプリング時の駆動量の大きさによ
り駆動量の時間的変化量を調節するため弁感度が高くな
っている場合は駆動量の時間変化量が小さく混合弁を安
定に動作することができる。As described above, according to the hot and cold water mixing control device of the present invention, when the valve sensitivity is high because the temporal change of the drive amount is adjusted by the magnitude of the drive amount at the time of the previous sampling. The driving valve has a small amount of change over time and can operate the mixing valve stably.
【0026】また、圧力差等によって駆動量にかかわら
ず湯側、水側どちらかの弁体と弁座が接近している場合
は弁位置検出手段により弁位置を検出しているから、混
合弁の感度が高くなる弁位置では混合弁制御手段の駆動
量の時間的変化量を調節して混合弁の安定を図り弁体や
弁座が衝突により変形しないようにすることができる。When the valve seat is close to the valve body on either the hot water side or the water side irrespective of the driving amount due to a pressure difference or the like, the valve position is detected by the valve position detecting means. In a valve position where the sensitivity of the mixing valve increases, the amount of temporal change in the driving amount of the mixing valve control means can be adjusted to stabilize the mixing valve and prevent the valve element and the valve seat from being deformed by collision.
【図1】本発明の湯水混合制御装置の一実施例を示す断
面図FIG. 1 is a sectional view showing an embodiment of a hot and cold water mixing control device of the present invention.
【図2】同湯水混合制御装置の制御ブロック図FIG. 2 is a control block diagram of the hot and cold water mixing control device.
【図3】同制御ブロックのフローチャートFIG. 3 is a flowchart of the control block.
【図4】(a)は本発明装置の高温出湯時における出力
特性図 (b)は同装置の低温出湯時における出力特性図FIG. 4 (a) is an output characteristic diagram of the device of the present invention at the time of hot water tapping, and FIG.
【図5】本発明の係数g(Pn−1)の特性図FIG. 5 is a characteristic diagram of a coefficient g (Pn-1) of the present invention.
【図6】本発明装置の第2の実施例の制御ブロックのフ
ローチャートFIG. 6 is a flowchart of a control block of a second embodiment of the device of the present invention.
【図7】(a)は本発明装置の第2実施例の高温出湯時
における出力特性図 (b)は同装置の第2実施例における低温出湯時の出力
特性図FIG. 7 (a) is an output characteristic diagram at the time of hot water tapping of the second embodiment of the present invention device, and (b) is an output characteristic diagram at the time of low temperature tapping in the second embodiment of the same device.
【図8】本発明装置の第2の実施例の係数h(R)の特
性図FIG. 8 is a characteristic diagram of a coefficient h (R) according to a second embodiment of the present invention;
【図9】従来例の湯水混合装置の断面図FIG. 9 is a cross-sectional view of a conventional hot and cold water mixing apparatus.
1 湯流路 2 水流路 3 自動調圧弁(混合弁) 18 制御手段 24 混合弁駆動手段 40 弁位置検出手段 Reference Signs List 1 hot water flow path 2 water flow path 3 automatic pressure regulating valve (mixing valve) 18 control means 24 mixing valve driving means 40 valve position detecting means
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6,DB名) F16K 31/06 F16K 11/00 F16K 31/66 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) F16K 31/06 F16K 11/00 F16K 31/66
Claims (2)
前記水流路の流量を調節する混合弁と、前記混合弁を駆
動する混合弁駆動手段と、前記混合弁駆動手段に駆動信
号を出力する制御手段とからなり、前記制御手段は駆動
量の大きさに応じて駆動量の時間的変化量を調節する混
合弁制御手段を有する湯水混合制御装置。1. A hot water flow path and a water flow path, a mixing valve for adjusting flow rates of the hot water flow path and the water flow path, a mixing valve driving means for driving the mixing valve, and a drive signal to the mixing valve driving means. A hot water mixing control device having mixing valve control means for adjusting a temporal change amount of the driving amount according to the magnitude of the driving amount.
前記水流路の流量を調節する混合弁と、前記混合弁を駆
動する混合弁駆動手段と、前記混合弁の弁位置を検出す
る弁位置検出手段と、前記混合弁駆動手段に駆動信号を
出力する制御手段とからなり、前記制御手段は前記弁位
置検出手段の信号により駆動量の時間的変化量を調節す
る混合弁制御手段を有する湯水混合制御装置。2. A hot water flow path and a water flow path, a mixing valve for adjusting flow rates of the hot water flow path and the water flow path, a mixing valve driving means for driving the mixing valve, and detecting a valve position of the mixing valve. Valve position detecting means, and a control means for outputting a drive signal to the mixing valve driving means, wherein the control means adjusts a temporal change of a driving amount by a signal of the valve position detecting means. A hot and cold water mixing control device having:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13333192A JP2962043B2 (en) | 1992-05-26 | 1992-05-26 | Hot water mixing control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13333192A JP2962043B2 (en) | 1992-05-26 | 1992-05-26 | Hot water mixing control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05332472A JPH05332472A (en) | 1993-12-14 |
JP2962043B2 true JP2962043B2 (en) | 1999-10-12 |
Family
ID=15102224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13333192A Expired - Fee Related JP2962043B2 (en) | 1992-05-26 | 1992-05-26 | Hot water mixing control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2962043B2 (en) |
-
1992
- 1992-05-26 JP JP13333192A patent/JP2962043B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH05332472A (en) | 1993-12-14 |
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