JP2701800B2 - Hot water mixing equipment - Google Patents
Hot water mixing equipmentInfo
- Publication number
- JP2701800B2 JP2701800B2 JP7188876A JP18887695A JP2701800B2 JP 2701800 B2 JP2701800 B2 JP 2701800B2 JP 7188876 A JP7188876 A JP 7188876A JP 18887695 A JP18887695 A JP 18887695A JP 2701800 B2 JP2701800 B2 JP 2701800B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- mixed hot
- temperature
- mixed
- mixing
- 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
Links
Landscapes
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
- Control Of Temperature (AREA)
- Domestic Plumbing Installations (AREA)
- Multiple-Way Valves (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、湯と水の混合比率を調
節して適温を得る湯水混合装置に関するものである。
【０００２】
【従来の技術】従来この種の湯水混合装置には、図２に
示すようなものがあった（例えば実開昭５５−５９２２
３号公報）。
【０００３】図２において、湯入口１、水入口２および
混合湯温出口３を有する弁框体４の内部には、湯側弁体
５および水側弁体６が設けられており、湯と水の混合比
を調節している。この湯側弁体５および水側弁体６は軸
７に固定して設けられており、この軸７は外部のねじ機
構８および歯車９を介してモータ１０により駆動され
る。混合湯の温度は温度検出器１１で検出され、温度設
定器１２との温度偏差を解消するように制御器１３でモ
ータ１０を駆動制御して混合湯温の調節を行っている。
【０００４】すなわち、温度設定器１２で得たい混合湯
温を設定すると、温度検出器１１で混合湯温を監視しつ
つ、モータ１０で適温が得られる位置に湯側弁体５およ
び水側弁体６を臨ませる制御を行うものである。
【０００５】
【発明が解決しようとする課題】従来の湯水混合装置は
以上のように構成されていたため、次のような課題を有
していた。
【０００６】（１）駆動部であるモータ１０や歯車９の
故障や軸７の固着により温度設定器１２で設定された混
合湯温が得られない場合、特に設定値以上の熱湯が供給
される場合は危険であった。
【０００７】（２）湯圧変動や水圧変動または混合流量
の急変により混合湯温が温度設定器１２の設定値以上に
オーバーシュートした場合や、供給湯温が急激に上昇し
たためにオーバーシュートした場合は危険であった。ま
た、逆にアンダーシュートした場合は特にシャワー使用
中においては不快な思いをするものであった。
【０００８】本発明はこのような従来の課題を解決する
ものであり、混合湯温が設定値から大きくはずれること
を防止し、危険の防止と不快感の除去が行える湯水混合
装置を提供することを目的としている。
【０００９】
【課題を解決するための手段】上記の目的を達成するた
めに、本発明の第１の発明における湯水混合装置は、湯
と水の混合比率を調節する混合弁と、混合弁駆動装置
と、混合湯温を検出する混合湯温センサと、混合湯温を
設定する混合湯温設定器と、混合湯の供給開始・停止を
行う流量調節弁と、この流量調節弁を駆動する流量調節
弁駆動装置と、混合湯の供給開始・停止を指示する給湯
設定手段と、この給湯設定手段による混合湯の供給開始
指示により流量調節弁駆動装置を介して流量調節弁を開
成し混合湯の供給を開始するとともに、混合湯温設定器
の混合湯温設定値と混合湯温センサの信号を比較し、そ
の偏差に応じて混合弁駆動装置を介して混合弁を制御し
て混合湯温を調節するとともに、この混合湯温の調節中
に混合湯温センサで検出される信号が混合湯温設定器で
設定された混合湯温と異なる温度に設定された所定値を
越え、かつ所定時間経過しても温度偏差が解消されない
場合は流量調節弁駆動装置を制御して流量調節弁にて混
合湯の流量を絞る制御を行う制御器を備えて構成するも
のである。
【００１０】本発明の第２の発明における湯水混合装置
は、湯と水の混合比率を調節する混合弁と、混合弁駆動
装置と、混合湯温を検出する混合湯温センサと、混合湯
温を設定する混合湯温設定器と、混合湯の供給開始・停
止を行う流量調節弁と、この流量調節弁を駆動する流量
調節弁駆動装置と、混合湯の供給開始・停止を指示する
給湯設定手段と、給湯の停止動作を検出する給湯停止検
出手段と、給湯設定手段による混合湯の供給開始指示に
より流量調節弁駆動装置を介して流量調節弁を開成し混
合湯の供給を開始するとともに、混合湯温設定器の混合
湯温設定値と混合湯温センサの信号を比較し、その偏差
に応じて混合弁駆動装置を介して混合弁を制御して混合
湯温を調節するとともに、この混合湯温の調節中に混合
湯温センサで検出される信号が混合湯温設定器で設定さ
れた混合湯温と異なる温度に設定された所定値を越え、
かつ所定時間経過しても温度偏差が解消されない場合は
流量調節弁駆動装置を制御して流量調節弁にて混合湯の
供給を停止するとともに、給湯停止検出手段の信号によ
り給湯の停止動作を検出し混合弁駆動装置の駆動を停止
する制御器を備えて構成するものである。
【００１１】
【００１２】
【００１３】上記した構成によって本発明の第１の発明
における湯水混合装置は、混合湯温センサで検出される
信号が混合湯温設定器で設定された混合湯温と異なる温
度に設定された所定値を越え、かつ所定時間経過しても
温度偏差が解消されない場合は、流量調節弁にて混合湯
の流量を絞る制御を行い、給湯開始時や過渡変動時に誤
動作を起こす事なく、設定された温度と大きく異なる温
度の湯が供給され危険な状況を招来することの防止を図
るとともに、少量の湯が徐々に排出されるため危険でな
い温度にまで混合湯温センサ部の温度を早く下げること
を可能とし復帰動作を早くできるものである。
【００１４】本発明の第２の発明における湯水混合装置
は、混合湯温センサで検出される信号が混合湯温設定器
で設定された混合湯温と異なる温度に設定された所定値
を越え、かつ所定時間経過しても温度偏差が解消されな
い場合は流量調節弁にて混合湯の供給を停止するととも
に、給湯停止検出手段の信号により給湯の停止動作を検
出し混合弁駆動装置の駆動を停止する制御器を行い、給
湯開始時や過渡変動時に誤動作を起こす事なく、設定さ
れた温度と大きく異なる温度の湯が供給され危険な状況
を招来することの防止を図るとともに、混合弁の駆動も
停止させ、自然冷却に伴い混合湯温センサ近傍の温度が
下がり混合弁が湯側をあける方向に駆動され再給湯時に
高温湯が供給される危険を、混合弁の動きを停止させる
ことにより防止し、停止動作時や再給湯時にさらなる危
険を招来することを防止しているものである。
【００１５】
【００１６】
【００１７】
【実施例】以下本発明の実施例を図面に基づいて説明す
る。
【００１８】図１において、湯の入口１４と水の入口１
５から弁框体１６内に入った湯と水は、両者の圧力を調
節し均圧にする圧力調整弁１７を経て混合弁１８に到達
する。混合弁１８は湯側弁体１９と水側弁体２０が軸２
１を介して外部に設けたモータ２２、ギヤボックス２
３、直線運動変換機構２４からなる駆動装置２５により
駆動される。そして混合弁１８では湯と水の混合比率が
変えられ、湯と水の混合した混合湯の温度は混合湯温セ
ンサ２６により検出される。また、混合湯の流量は給湯
停止検出手段である流量センサ２７により検出される。
混合湯は続いて流量調節弁２８により流量が調節・制限
される。この流量調節弁２８は外部に設けた混合弁駆動
装置２５と同様の構成を有した流量調節弁駆動装置２９
により駆動される。最終的に混合湯は混合湯出口３０か
ら給湯対象の吐出口３１を経て給湯される。吐出口３１
の近傍には混合湯温の設定と給湯の供給開始・停止を設
定する設定器３２が設けられている。この設定器３２の
信号は制御器３３に取り込まれる。制御器３３に取り込
まれる信号はこの他流量センサ２７の信号、混合湯温セ
ンサ２６の信号であり、制御器３３からは混合弁駆動装
置２２及び流量調節弁駆動装置２９へ出力信号が伝えら
れる。
【００１９】次にこの実施例の動作を説明する。給湯が
停止している状態から給湯を開始するには設定器３２の
給湯スイッチ（図示せず）を「オン」すると、流量調節
弁２８が流調節弁駆動装置２９を介して制御器３３の指
令を受けて開成される。湯の入口１４と水の入口１５か
ら供給される湯と水は圧力調整弁１７で圧力が均圧化さ
れ、混合弁１８に供給され、混合弁１８で湯と水の混合
比が調節される。この圧力調整弁１７の作用により、湯
圧や水圧に変動があっても混合湯温の大きな変動は低減
されている。混合された混合湯の温度は混合湯温センサ
２６で検出され、設定器３２で設定された混合湯温設定
値信号と混合湯温センサ２６の検出信号を制御器３２が
比較し、両信号の偏差をなくすように混合弁駆動装置２
５を駆動制御し混合湯温が調節される。流量センサ２７
は混合湯量が所定値以下に下がったら混合弁１８の動作
を止め、給湯停止動作時や停止時に混合弁が動き、更に
湯側を開成することを防止するとともに、混合湯量の積
算や混合湯の流量調節のために瞬時流量検出等も行って
いる。流量調節弁部２８では混合湯の流量が調節され給
湯対象に供給される。通常はこのようにして設定器３２
で指示された温度の混合湯が混合弁１８で調節され、給
湯対象に供給される。
【００２０】万が一、混合弁駆動装置２５や混合弁１
８、また圧力調整弁１７が故障したり、制御器３３内の
混合弁制御回路（図示せず）が故障した場合、混合湯が
設定器３２で指示された温度通りには供給されなくな
る。特に高温が供給されると熱湯を浴びる可能性もあり
危険である。このような時には、混合湯温センサ２６で
検出される混合湯温が、設定器３２で設定した温度に達
しないことを制御器３３がまず判断する。次に、混合弁
１８の制御動作に必要とされる所定時間以上たってもな
お温度偏差が解消されないことを判断し、流量調節弁駆
動装置２９を介して流量調節弁２８を閉成するように制
御器３３が指示を下す。そして流量調節弁２８が混合湯
の供給を停止し、設定温度からはずれた熱湯の供給や冷
水の供給を防止する。
【００２１】特に危険なのは熱湯が供給され、供給対象
がシャワー等の場合にそれを体に浴びることである。こ
の対策として混合湯が通常使用される温度の上限値４５
℃にある程度幅をもたせて定めた所定値５０℃を越えた
ら流量調節弁２８で混合湯を停止させることができる。
この混合湯の供給停止時には、流量センサ２７により混
合弁駆動装置２５を介し混合弁１８の駆動も止められ
る。
【００２２】また、故障しないまでも、水圧変動、湯圧
変動や供給混合湯の流量変動、また供給湯温の急変等急
激な状態変化に伴い混合湯温がオーバーシュート、アン
ダーシュートすることがある。水圧変動や湯圧変動は一
応圧力調整弁１７により均圧化されるが、圧力調整弁の
故障時や、限界を越えた圧力変動があった場合に混合湯
温に変動を生ずる。このような場合、制御器３３が設定
器３２の混合湯温設定値信号と混合湯温センサ２６で検
出される混合湯温信号を比較し、例えば３degというよ
うに定めた所定値以上に温度偏差が開いたら流量調節弁
２８にて流量を減少させる。この絞りこみ流量は流量セ
ンサ２７の信号を監視しつつ所定の偏差値まで、制御器
３３によって流量調節弁駆動装置２９を介して行われ
る。この際、混合湯の供給を停止してしまうと使用して
いるため不満が残るし、また湯と水が供給されないため
混合弁１８の制御も行われなくなり問題が残るので停止
はさせていない。また、停止させずに混合湯の流量を絞
るだけにとどめる場合、わずかながらも混合湯は排出さ
れるため、過渡的な混合湯温の変動の場合、混合湯の供
給を完全に停止した場合に比較し、混合湯温センサ２６
近傍の高温湯が早く排出でき、正常な制御への復帰が早
くできる。給湯が不要となった場合は、設定器３２の給
湯スイッチをオフにすると流量調節弁２８が混合湯の供
給を停止する。なお、給湯機が故障したり貯湯されてい
た湯がでつくした場合も給湯を止めることができる。ま
た瞬間湯沸器を使用した場合、初期スタート時に流量を
絞れば湯温の立上りを早くすることも可能である。
【００２３】この実施例においては、制御器３３は混合
湯温センサ２６信号と混合湯温設定器３２の設定値信号
が所定の偏差幅以上になった時に流量調節弁２８で混合
流量を絞ることができるため、過渡的な温度変動の場合
に温度の高いあるいは低い湯を大量に給湯対象に送るこ
とが防止可能であるとともに、混合弁１８の制御動作も
損なうことがないという利点を有する。
【００２４】また、シャワー等が給湯対象の場合、制御
器３３が混合湯温センサ２６ので検出される混合湯温が
所定値を越えると、混合湯の供給を停止できるため、危
険温度を偏差としてではなく絶対値して定められる利点
を有する。
【００２５】また、制御器３３は混合湯温センサ２６の
信号と設定器３２の設定値信号の偏差が所定時間解消さ
れない場合に流量調節弁２８にて混合湯の供給を停止す
るため、通常動作時に多少の温度変動があっても故障と
間違えて流量調節弁２８を閉成してしまわない利点を有
する。
【００２６】
【発明の効果】（１） 混合湯温センサで検出される信
号が混合湯温設定器で設定された混合湯温と異なる温度
に設定された所定値を越え、かつ所定時間経過しても温
度偏差が解消されない場合は流量調節弁にて混合湯の流
量を絞る制御を行うため、給湯開始時や過渡変動時に誤
動作を起こす事なく、設定された温度と大きく異なる温
度の湯が供給され危険な状況を招来することの防止が図
れるとともに、少量の湯が徐々に排出されるため危険で
ない温度にまで混合湯温センサ部の温度を早く下げるこ
とができ復帰動作が早くできる。
【００２７】（２） 混合湯温センサで検出される信号
が混合湯温設定器で設定された混合湯温と異なる温度に
設定された所定値を越え、かつ所定時間経過しても温度
偏差が解消されない場合は流量調節弁にて混合湯の供給
を停止するとともに、給湯停止検出手段の信号により給
湯の停止動作を検出し混合弁駆動装置の駆動を停止する
制御器を行うため、給湯開始時や過渡変動時に誤動作を
起こす事なく、設定された温度と大きく異なる温度の湯
が供給され危険な状況を招来することの防止が図れると
ともに、混合弁の駆動も停止させ自然冷却に伴い混合湯
温センサ近傍の温度が下がり混合弁が湯側をあける方向
に駆動され再給湯時に高温湯が供給される危険を、混合
弁の動きを停止させることにより防止し、停止動作時や
再給湯時にさらなる危険を招来することの防止ができ
る。
【００２８】
【００２９】Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing apparatus for adjusting a mixing ratio of hot water and water to obtain an appropriate temperature. 2. Description of the Related Art Conventionally, there has been a hot water mixing apparatus of this kind as shown in FIG. 2 (for example, Japanese Utility Model Laid-Open No. 55-5922).
No. 3). In FIG. 2, inside a valve frame 4 having a hot water inlet 1, a water inlet 2, and a mixed hot water outlet 3, a hot water side valve body 5 and a water side valve body 6 are provided. The mixing ratio of water is adjusted. The hot water side valve element 5 and the water side valve element 6 are fixedly provided on a shaft 7, and the shaft 7 is driven by a motor 10 via an external screw mechanism 8 and a gear 9. The temperature of the mixed hot water is detected by the temperature detector 11, and the controller 13 controls the driving of the motor 10 to adjust the temperature of the mixed hot water so as to eliminate the temperature deviation from the temperature setting device 12. [0004] That is, when the desired temperature of the mixed hot water is set by the temperature setting device 12, the temperature of the mixed hot water is monitored by the temperature detector 11, and the hot-water-side valve element 5 and the water-side valve 5 The control for bringing the body 6 is performed. [0005] Since the conventional hot water mixing apparatus is configured as described above, it has the following problems. (1) When the temperature of the mixed hot water set by the temperature setting device 12 cannot be obtained due to a failure of the motor 10 or the gear 9 serving as the drive unit or the fixation of the shaft 7, hot water of a set value or more is supplied. The case was dangerous. (2) When the temperature of the mixed hot water overshoots above the set value of the temperature setting unit 12 due to the fluctuation of the hot water pressure, the fluctuation of the water pressure, or the sudden change of the mixing flow rate, or the overshoot due to the rapid rise in the temperature of the supply hot water. Was dangerous. On the other hand, when the player undershoots, he / she feels uncomfortable especially when using the shower. SUMMARY OF THE INVENTION The present invention is to solve such a conventional problem and to provide a hot water mixing apparatus capable of preventing a mixed hot water temperature from deviating greatly from a set value and preventing danger and eliminating discomfort. It is an object. [0009] To achieve the above object, a hot water mixing apparatus according to a first aspect of the present invention comprises a mixing valve for adjusting a mixing ratio of hot water and water, and a mixing valve drive. A device, a mixed hot water temperature sensor for detecting the mixed hot water temperature, a mixed hot water temperature setting device for setting the mixed hot water temperature, and a start / stop of the mixed hot water supply
Flow control valve to perform and flow control to drive this flow control valve
Valve drive unit and hot water supply for instructing start / stop of mixed hot water supply
Setting means and start of supply of mixed hot water by the hot water supply setting means
Open the flow control valve via the flow control valve drive unit according to the instruction
Start supplying the mixed hot water and set the mixed hot water
The set value of the mixed hot water temperature is compared with the signal of the mixed hot water temperature sensor.
Control the mixing valve via the mixing valve drive according to the deviation of
While adjusting the temperature of the mixed hot water.
The signal detected by the mixed water temperature sensor is
The specified value set at a temperature different from the set
Temperature deviation is not eliminated even after exceeding the specified time
In this case, control the flow control valve drive and mix with the flow control valve.
The apparatus is provided with a controller for controlling the flow rate of the hot water . A hot water mixing apparatus according to a second aspect of the present invention includes a mixing valve for adjusting a mixing ratio of hot water and water, a mixing valve driving device, a mixed hot water temperature sensor for detecting a mixed hot water temperature, and a mixed hot water temperature. Hot water setting device for setting the temperature, a flow control valve for starting and stopping the supply of the mixed hot water, a flow control valve driving device for driving the flow control valve, and a hot water supply setting for instructing the start and stop of the supply of the mixed hot water Means and hot water supply stop detection for detecting a hot water supply stop operation
And an instruction to start supplying mixed water by the hot water supply setting means.
Open the flow control valve via the flow control valve drive unit
Start supplying hot water and mix the hot water
Compare the hot water set value with the signal of the mixed hot water temperature sensor and calculate the deviation.
Control the mixing valve via the mixing valve drive according to the
Adjust the hot water temperature and mix while adjusting the hot water temperature.
The signal detected by the hot water temperature sensor is set by the mixed hot water temperature setter.
Exceeds a predetermined value set at a temperature different from the mixed hot water temperature,
If the temperature deviation is not resolved even after the specified time
By controlling the flow control valve drive, the flow control valve
When the supply is stopped, the signal from the hot water supply
The operation of the mixing valve drive is stopped by detecting the stop operation of the hot water supply.
It is provided with a controller that performs the operation. With the above-described configuration, the hot and cold water mixing apparatus according to the first aspect of the present invention is detected by a mixed hot water temperature sensor.
The temperature of the signal is different from the mixed hot water temperature set by the mixed hot water temperature setter.
Exceeds the specified value at a time and the specified time has passed.
If the temperature deviation does not disappear, use the flow control valve to
Control at the beginning of hot water supply or during transient fluctuations.
Temperature that differs greatly from the set temperature without causing operation
To prevent dangerous hot water from being supplied and create a dangerous situation
And a small amount of hot water is gradually drained.
To quickly lower the temperature of the mixed hot water sensor to a suitable temperature
And the return operation can be accelerated. According to a second aspect of the present invention, there is provided a hot water mixing apparatus in which a signal detected by a mixed hot water temperature sensor is used as a mixed hot water temperature setting device.
Preset value set to a temperature different from the mixed hot water temperature set in
Temperature deviation does not disappear even after the specified time
When the supply of mixed hot water is stopped by the flow control valve,
The stop operation of the hot water supply is detected by the signal of the hot water supply stop detection means.
A controller that stops the driving of the mixing valve drive
The setting can be performed without causing malfunction at the start of hot water or during transient fluctuation.
Dangerous situation when hot water with a temperature significantly different from the supplied temperature is supplied
And the driving of the mixing valve
Stop, and the temperature near the mixed hot water temperature sensor rises with natural cooling.
The descending mixing valve is driven in the direction to open the hot water side and
Stop the operation of the mixing valve, the danger of hot water being supplied
To prevent further danger during stop operation or re-hot water supply.
This is to prevent incursions. Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, an inlet 14 for hot water and an inlet 1 for water
Hot water and water entering the valve frame 16 from 5 reach the mixing valve 18 via the pressure regulating valve 17 which regulates the pressure of both and equalizes the pressure. The mixing valve 18 includes a hot water side valve element 19 and a water side valve
1, a motor 22 and a gear box 2 provided outside via
3. Driven by a drive unit 25 including a linear motion conversion mechanism 24. The mixing ratio of the hot water and the water is changed by the mixing valve 18, and the temperature of the mixed hot water mixed with the hot water and the water is detected by the mixed hot water temperature sensor 26. Further, the flow rate of the mixed hot water is detected by a flow rate sensor 27 serving as hot water supply stop detecting means.
Subsequently, the flow rate of the mixed hot water is adjusted and limited by the flow rate control valve 28. The flow control valve 28 has a configuration similar to that of the mixing valve drive 25 provided externally.
Driven by Finally, the mixed hot water is supplied from the mixed hot water outlet 30 through the discharge port 31 to be supplied. Discharge port 31
A setting unit 32 for setting the temperature of the mixed hot water and starting / stopping the supply of hot water is provided in the vicinity of. The signal of the setting device 32 is taken into the controller 33. The signals taken into the controller 33 are the signal of the flow rate sensor 27 and the signal of the mixed hot water temperature sensor 26, and output signals are transmitted from the controller 33 to the mixing valve driving device 22 and the flow control valve driving device 29. Next, the operation of this embodiment will be described. When the hot water supply switch (not shown) of the setter 32 is turned on to start hot water supply from a state where hot water supply is stopped, the flow control valve 28 is instructed by the controller 33 via the flow control valve drive device 29. It is opened in response to it. The pressure of the hot water and the water supplied from the hot water inlet 14 and the water inlet 15 is equalized by the pressure regulating valve 17, supplied to the mixing valve 18, and the mixing ratio of the hot water and the water is adjusted by the mixing valve 18. . Due to the action of the pressure adjusting valve 17, even if there is a change in the hot water pressure or the water pressure, a large change in the mixed hot water temperature is reduced. The temperature of the mixed hot water mixed is detected by the mixed hot water temperature sensor 26, and the controller 32 compares the mixed hot water temperature set value signal set by the setting device 32 with the detection signal of the mixed hot water temperature sensor 26, and the two signals are compared. Mixing valve driving device 2 to eliminate deviation
5 is driven to control the temperature of the mixed hot water. Flow sensor 27
Stops the operation of the mixing valve 18 when the amount of mixed hot water falls below a predetermined value, prevents the mixing valve from moving during a hot water supply stop operation or a stop, and further prevents the hot water side from being opened. Instantaneous flow rate detection is also performed for flow rate adjustment. The flow rate of the mixed hot water is adjusted by the flow rate adjusting valve section 28 and supplied to the hot water supply target. Usually, the setting device 32 is set in this way.
Is adjusted by the mixing valve 18 and supplied to the hot water supply target. The mixing valve driving device 25 and the mixing valve 1
8, when the pressure regulating valve 17 fails or the mixing valve control circuit (not shown) in the controller 33 fails, the mixed hot water is not supplied at the temperature specified by the setter 32. Particularly when a high temperature is supplied, there is a possibility that hot water may be applied, which is dangerous. In such a case, the controller 33 first determines that the mixed hot water temperature detected by the mixed hot water temperature sensor 26 does not reach the temperature set by the setter 32. Next, it is determined that the temperature deviation has not been resolved even after the predetermined time required for the control operation of the mixing valve 18 has elapsed, and control is performed to close the flow control valve 28 via the flow control valve driving device 29. The vessel 33 gives an instruction. Then, the flow control valve 28 stops the supply of the mixed hot water, thereby preventing the supply of hot water or the supply of cold water that is out of the set temperature. A particularly dangerous situation is that hot water is supplied, and when the object to be supplied is a shower or the like, it is bathed in the body. As a countermeasure against this, the upper limit value 45 of the temperature at which the mixed hot water is usually used is used.
When the temperature exceeds a predetermined value of 50 ° C. with a certain width, the flow rate control valve 28 can stop the mixed hot water.
When the supply of the mixed hot water is stopped, the driving of the mixing valve 18 via the mixing valve driving device 25 by the flow rate sensor 27 is also stopped. Even if there is no failure, the temperature of the mixed hot water may overshoot or undershoot due to a sudden change in water pressure, a change in the hot water pressure, a change in the flow rate of the supplied mixed hot water, or a sudden change in the temperature of the supplied hot water. . Fluctuations in water pressure and hot water pressure are tentatively equalized by the pressure regulating valve 17, but when the pressure regulating valve fails or when there is a pressure fluctuation exceeding the limit, the temperature of the mixed hot water fluctuates. In such a case, the controller 33 compares the mixed hot water temperature set value signal of the setter 32 with the mixed hot water temperature signal detected by the mixed hot water temperature sensor 26, and determines that the temperature deviation exceeds a predetermined value such as 3 deg. Is opened, the flow rate is reduced by the flow rate control valve 28. The throttle flow is controlled by the controller 33 through the flow control valve driving device 29 up to a predetermined deviation value while monitoring the signal of the flow sensor 27. At this time, if the supply of the mixed hot water is stopped, dissatisfaction remains because the hot water and the water are used, and since the hot water and the water are not supplied, the control of the mixing valve 18 is not performed and a problem remains, so the stop is not performed. In addition, when the flow rate of the mixed hot water is merely reduced without stopping, the mixed hot water is slightly discharged, so in the case of a transient fluctuation of the mixed hot water temperature, when the supply of the mixed hot water is completely stopped. Compare the mixed hot water temperature sensor 26
High-temperature hot water in the vicinity can be quickly discharged, and the return to normal control can be quickly performed. When the hot water supply becomes unnecessary, the hot water supply switch of the setter 32 is turned off, and the flow control valve 28 stops supplying the mixed hot water. It should be noted that the hot water supply can also be stopped when the hot water supply device breaks down or hot water stored in the hot water supply runs out. In addition, when an instantaneous water heater is used, the rise of the hot water temperature can be accelerated by reducing the flow rate at the time of the initial start. In this embodiment, the controller 33 reduces the mixing flow rate by the flow rate control valve 28 when the signal of the mixed hot water temperature sensor 26 and the set value signal of the mixed hot water temperature setting device 32 exceed a predetermined deviation width. Therefore, it is possible to prevent a large amount of hot or cold hot water from being sent to a hot water supply object in the case of a transient temperature change, and to have an advantage that the control operation of the mixing valve 18 is not impaired. When the temperature of the mixed hot water detected by the mixed hot water temperature sensor 26 exceeds a predetermined value when the shower or the like is a hot water supply target, the supply of the mixed hot water can be stopped. It has the advantage of being determined not as an absolute value. The controller 33 stops the supply of the mixed hot water by the flow control valve 28 when the deviation between the signal of the mixed hot water temperature sensor 26 and the set value signal of the setter 32 is not eliminated for a predetermined time. There is an advantage that the flow control valve 28 is not closed by mistake even if there is some temperature fluctuation. (1) The signal detected by the mixed hot water temperature sensor
No. is different from the mixed water temperature set by the mixed water temperature setting device
Exceeds the specified value set for
If the deviation does not disappear, use the flow control valve to
Control is performed to reduce the amount of water.
Temperature that differs greatly from the set temperature without causing operation
To prevent dangerous hot water from being supplied and create a dangerous situation
And a small amount of hot water is gradually discharged, which is dangerous.
Temperature of the mixed water temperature sensor
The return operation can be performed quickly. (2) Signal detected by mixed hot water temperature sensor
Is different from the mixed water temperature set by the mixed water temperature setting device.
Even if the temperature exceeds the set value and the specified time elapses
If the deviation is not resolved, supply mixed hot water with a flow control valve
Is stopped, and the hot water supply
Detects hot water stop operation and stops driving of mixing valve drive unit
Since the controller operates, malfunction may occur at the start of hot water supply or during transient fluctuations.
Hot water with a temperature significantly different from the set temperature without causing
Can prevent dangerous situations from being supplied
In both cases, stop the operation of the mixing valve and mix the hot water with natural cooling.
Direction where the temperature near the temperature sensor drops and the mixing valve opens the hot water side
The danger of hot water being supplied when
This is prevented by stopping the movement of the valve.
It can prevent further danger when re-watering.
You. [0029]
【図面の簡単な説明】
【図１】本発明の一実施例を示す湯水混合装置の一部切
欠き断面図
【図２】従来の湯水混合装置の断面図
【符号の説明】
１７ 圧力調整弁
１８ 混合弁
２５ 混合弁駆動装置
２６ 混合湯温センサ
２７ 流量センサ（給湯停止検出手段）
２８ 流量調節弁
２９ 流量調節弁駆動装置
３２ 設定器（混合湯温設定器）
３３ 制御器BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway sectional view of a hot water mixing apparatus showing an embodiment of the present invention. FIG. 2 is a cross sectional view of a conventional hot water mixing apparatus. Reference Signs List 18 mixing valve 25 mixing valve driving device 26 mixed hot water temperature sensor 27 flow sensor (hot water supply stop detecting means) 28 flow control valve 29 flow control valve driving device 32 setting device (mixed hot water temperature setting device) 33 controller
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭59−126180（ＪＰ，Ａ) 特開 昭58−60321（ＪＰ，Ａ) 特開 昭56−40917（ＪＰ，Ａ) 実開 昭58−138875（ＪＰ，Ｕ) 実開 昭57−145874（ＪＰ，Ｕ) 実開 昭59−58054（ＪＰ，Ｕ) 実開 昭47−34656（ＪＰ，Ｕ) 実開 昭57−50712（ＪＰ，Ｕ) ────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-59-126180 (JP, A) JP-A-58-60321 (JP, A) JP-A-56-40917 (JP, A) Actual opening 58-138875 (JP, U) Shokai Sho 57-145874 (JP, U) Shokai Sho 59-58054 (JP, U) 47-34656 (JP, U) Shokai Sho 57-50712 (JP, U)
Claims (1)
を駆動する混合弁駆動装置と、混合湯温を検出する混合
湯温センサと、混合湯温を設定する混合湯温設定器と、
混合湯の供給開始・停止を行う流量調節弁と、この流量
調節弁を駆動する流量調節弁駆動装置と、混合湯の供給
開始・停止を指示する給湯設定手段と、この給湯設定手
段による混合湯の供給開始指示により前記流量調節弁駆
動装置を介して前記流量調節弁を開成し混合湯の供給を
開始するとともに、前記混合湯温設定器の混合湯温設定
値と前記混合湯温センサの信号を比較し、その偏差に応
じて前記混合弁駆動装置を介して前記混合弁を制御して
混合湯温を調節するとともに、この混合湯温の調節中に
前記混合湯温センサで検出される信号が前記混合湯温設
定器で設定された混合湯温と異なる温度に設定された所
定値を越え、かつ所定時間経過しても温度偏差が解消さ
れない場合は前記流量調節弁駆動装置を制御して前記流
量調節弁にて混合湯の流量を絞る制御を行う制御器を備
えた湯水混合装置。 ２．湯と水の混合比率を調節する混合弁と、この混合弁
を駆動する混合弁駆動装置と、混合湯温を検出する混合
湯温センサと、混合湯温を設定する混合湯温設定器と、
混合湯の供給開始・停止を行う流量調節弁と、この流量
調節弁を駆動する流量調節弁駆動装置と、混合湯の供給
開始・停止を指示する給湯設定手段と、給湯の停止動作
を検出する給湯停止検出手段と、前記給湯設定手段によ
る混合湯の供給開始指示により前記流量調節弁駆動装置
を介して前記流量調節弁を開成し混合湯の供給を開始す
るとともに、前記混合湯温設定器の混合湯温設定値と前
記混合湯温センサの信号を比較し、その偏差に応じて前
記混合弁駆動装置を介して前記混合弁を制御して混合湯
温を調節するとともに、この混合湯温の調節中に前記混
合湯温センサで検出される信号が前記混合湯温設定器で
設定された混合湯温と異なる温度に設定された所定値を
越え、かつ所定時間経過しても温度偏差が解消されない
場合は前記流量調節弁駆動装置を制御して前記流量調節
弁にて混合湯の供給を停止するとともに、前記給湯停止
検出手段の信号により給湯の停止動作を検出し前記混合
弁駆動装置の駆動を停止する制御器を備えた湯水合装
置。(57) [Claims] A mixing valve for adjusting the mixing ratio of hot water and water, a mixing valve driving device for driving the mixing valve, a mixed hot water temperature sensor for detecting the mixed hot water temperature, and a mixed hot water temperature setting device for setting the mixed hot water temperature,
Flow control valve for starting and stopping the supply of mixed hot water, and this flow rate
Flow control valve drive for driving control valve and supply of mixed hot water
Hot water supply setting means for instructing start / stop,
The flow control valve drive is operated by an instruction
The flow control valve is opened via a moving device to supply mixed hot water.
Starting and setting the mixed hot water temperature of the mixed hot water temperature setting device
The value is compared with the signal of the mixed hot water temperature sensor, and
Controlling the mixing valve via the mixing valve driving device
While adjusting the temperature of the mixed water, while adjusting the temperature of the mixed water
The signal detected by the mixed hot water temperature sensor is
A place set to a temperature different from the temperature of the mixed hot water set by the meter
Temperature deviation is eliminated even after the specified value has passed and the specified time has passed.
If not, control the flow control valve drive to control the flow.
A hot and cold water mixing device provided with a controller for controlling the flow rate of the mixed hot water with a flow rate adjusting valve . 2. A mixing valve for adjusting the mixing ratio of hot water and water, a mixing valve driving device for driving the mixing valve, a mixed hot water temperature sensor for detecting the mixed hot water temperature, and a mixed hot water temperature setting device for setting the mixed hot water temperature,
A flow control valve for starting and stopping the supply of mixed hot water, a flow control valve driving device for driving the flow control valve, hot water supply setting means for instructing start and stop of the supply of the mixed hot water, and a stop operation of the hot water supply
Hot water supply stop detecting means for detecting
The flow control valve driving device according to the instruction to start the supply of mixed hot water
The flow control valve is opened via the
And the mixed hot water set value of the mixed hot water
Compare the signals of the mixed hot water temperature sensor and take the
The mixing valve is controlled through the mixing valve driving device to control the mixing hot water.
While adjusting the temperature of the mixed hot water,
The signal detected by the hot water temperature sensor is
The specified value set at a temperature different from the set
Temperature deviation is not eliminated even after exceeding the specified time
In this case, control the flow control valve drive to control the flow
Stop supplying the mixed hot water with the valve and stop the hot water supply.
The stop operation of hot water supply is detected by the signal of the detection means, and the mixing is performed.
A hot and cold water mixing device provided with a controller that stops driving of a valve driving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7188876A JP2701800B2 (en) | 1995-07-25 | 1995-07-25 | Hot water mixing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7188876A JP2701800B2 (en) | 1995-07-25 | 1995-07-25 | Hot water mixing equipment |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59244964A Division JPH0684789B2 (en) | 1984-11-20 | 1984-11-20 | Hot water mixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0854937A JPH0854937A (en) | 1996-02-27 |
| JP2701800B2 true JP2701800B2 (en) | 1998-01-21 |
Family
ID=16231428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7188876A Expired - Lifetime JP2701800B2 (en) | 1995-07-25 | 1995-07-25 | Hot water mixing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2701800B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61146241A (en) * | 1984-12-20 | 1986-07-03 | 松下電器産業株式会社 | Composite ultrasonic probe |
| JP2003049462A (en) * | 2001-08-06 | 2003-02-21 | Matsushita Electric Ind Co Ltd | Water pipe faucet device |
| JP2004108530A (en) * | 2002-09-20 | 2004-04-08 | Masayuki Sakamoto | Automatic temperature controlling mixing equipment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56203Y2 (en) * | 1971-05-17 | 1981-01-07 | ||
| JPS57145874U (en) * | 1981-03-09 | 1982-09-13 | ||
| JPS5860321A (en) * | 1981-10-07 | 1983-04-09 | Omron Tateisi Electronics Co | Temperature controller |
| JPS58138875U (en) * | 1982-03-16 | 1983-09-19 | リンナイ株式会社 | hot water mixing faucet |
| JPS59126180A (en) * | 1982-08-12 | 1984-07-20 | Matsushita Electric Ind Co Ltd | Hot water supplier of hot/cold water mixing type |
| JPS5958054U (en) * | 1982-10-08 | 1984-04-16 | 株式会社イナックス | shower head |
-
1995
- 1995-07-25 JP JP7188876A patent/JP2701800B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0854937A (en) | 1996-02-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |