JP3289334B2 - Hot water mixing equipment - Google Patents
Hot water mixing equipmentInfo
- Publication number
- JP3289334B2 JP3289334B2 JP24160292A JP24160292A JP3289334B2 JP 3289334 B2 JP3289334 B2 JP 3289334B2 JP 24160292 A JP24160292 A JP 24160292A JP 24160292 A JP24160292 A JP 24160292A JP 3289334 B2 JP3289334 B2 JP 3289334B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- hot
- pressure
- flow path
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、湯と水を混合して適温
を得る、給湯用の湯水混合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 water mixing apparatus for mixing hot water and water to obtain an appropriate temperature.
【０００２】[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、特開平１−３１２２
７９号公報）。2. Description of the Related Art Conventionally, this type of hot and cold water mixing apparatus has been known as shown in FIG.
No. 79).
【０００３】図２において、湯流路１と水流路２を経て
供給される湯と水は、自動調圧弁３によって、減圧され
るとともに湯と水の混合比が調節される。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、シリンダ９内に設けられた湯と水の１
次圧ＰＨ１，ＰＣ１の圧力差で動作するピストン９ａと
で構成されており、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が左右に移動し、湯側弁体４と水側
弁体６の２次圧ＰＨ２とＰＣ２とで常に等しく保たれる
ように作用する。さらに、弁軸８にバイアス駆動手段１
０が設けられ、バイアス駆動手段１０は弁軸８の端部に
結合されたボビン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１２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。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への電流を変化させること
により混合湯温を変える。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がバイアス駆動手段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。In FIG. 2, hot water and water supplied through a hot water flow path 1 and a water flow path 2 are depressurized by an automatic pressure regulating valve 3 and the mixing ratio of hot water and water is adjusted. Automatic pressure regulating valve 3
Is a hot water side valve body 4 for reducing the primary pressure PH1 of the hot water flow path 1,
A hot water side valve seat 5, a water side valve body 6 for reducing the primary pressure PC1 of the water flow path 2, a water side valve seat 7, a valve shaft 8 connecting the hot side valve body 4 and the water side valve body 6, 1 of hot water and water provided in cylinder 9
The automatic pressure regulating valve 3 is moved left and right by the pressure of the hot water or the water even if the pressure of the hot water or the water changes suddenly. The secondary pressure PH2 of the side valve body 6 and the PC2 act so as to be always kept equal. Further, the bias driving means 1 is attached to the valve shaft 8.
0, a bias driving means 10 is provided with a bobbin 11 coupled to the end of the valve shaft 8, a coil 12 wound on the bobbin 11 and insulated, and a permanent magnet provided so as to sandwich the coil 12. 13, the coil 12 has
It is connected to the control means 18 via the flexible part 14. 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 shifts by the bias force,
For example, the secondary pressure PH2 of the hot water and the pressure of the PC2 are constantly adjusted at the point of 2: 1. As a result, the tapping temperature becomes high. Thus, by changing the current to the coil 12, the temperature of the mixed hot water is changed. Reference numeral 19 denotes a mixing section of hot water and water, and after mixing, the hot water is discharged via a flow rate control opening / closing valve 20.
15 and its flow rate are detected by the flow rate detecting means 16, and the control means 18 biases the bias driving 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】しかしながら上記従来
の構成では、次のような課題を有していた。However, the above-mentioned conventional configuration has the following problems.
【０００５】例えば湯側と水側の供給１次圧、すなわち
ＰＨ１とＰＣ１との圧力差が大きい場合、湯と水の混合
比を可変するためのバイアス駆動手段１０の必要駆動力
が大きくなり、バイアス駆動手段１０の容量の増大およ
び消費電力が増大するという課題を有していた。例え
ば、湯側の供給１次圧が１kg／cm2 （９.8×１０4Pa ）
で、水側の供給１次圧が２kg／cm2 （１９.6１×１０4P
a ）で、仕切りピストン９ａの直径が１５mmの場合、バ
イアス駆動手段１０は約１.8kgf （＝１７.3Ｎ）以上の
力を発生できなくてはならない。したがって、バイアス
駆動手段１０は外形寸法が大型化し、消費電力も大きく
ならざるを得なかった。For example, when the supply primary pressure on the hot water side and the water side, that is, the pressure difference between PH1 and PC1, is large, the required driving force of the bias driving means 10 for changing the mixing ratio of hot water and water becomes large. There is a problem that the capacity of the bias driving means 10 and the power consumption increase. For example, the supply primary pressure on the hot water side is 1 kg / cm 2 (9.8 × 10 4 Pa)
And the primary pressure on the water side is 2 kg / cm 2 (19.6 × 10 4 P
In a), when the diameter of the partition piston 9a is 15 mm, the bias driving means 10 must be able to generate a force of about 1.8 kgf (= 17.3 N) or more. Therefore, the bias driving means 10 has to be increased in external dimensions and power consumption.
【０００６】本発明は上記従来の課題を解決するもの
で、ピストンを有し構造の混合弁において湯と水の供給
圧の差が大きい場合にも対応でき、かつ駆動手段の低電
力、および小型化を実現できる湯水混合装置を提供する
ことを第１の目的としている。The present invention has been made to solve the above-mentioned conventional problems, and can cope with a large difference between the supply pressures of hot water and water in a mixing valve having a piston and having a structure. It is a first object of the present invention to provide a hot and cold water mixing device capable of realizing the water-cooling.
【０００７】本発明の第２の目的は、ピストンを有した
構造の混合弁における駆動手段の低電力、および小型化
を実現できると共に、特に応答性に優れた湯水混合装置
を提供することにある。A second object of the present invention is to provide a hot and cold water mixing apparatus which can realize low power and small size of driving means in a mixing valve having a structure having a piston and which is particularly excellent in responsiveness. .
【０００８】本発明の第３の目的は、ピストンを有した
構造の混合弁における駆動手段の低電力、および小型化
を実現できると共に、応答性および制御安定性をさらに
高めた湯水混合装置を提供することにある。A third object of the present invention is to provide a hot and cold water mixing apparatus which can realize low power and small size of driving means in a mixing valve having a structure having a piston, and further improve responsiveness and control stability. Is to do.
【０００９】[0009]
【課題を解決するための手段】上記の第１の目的を達成
するために本発明の湯水混合装置は、湯側流路に設けら
れた湯側弁座および湯側弁体と、水側流路に設けられた
水側弁座および水側弁体と、前記湯側弁体と前記水側弁
体に弁軸を介して連結され、湯側流路と水側流路とを仕
切る仕切りピストンと、前記水側弁体と連結された水側
圧力ピストンと、前記湯側弁体と連結された湯側圧力ピ
ストンと、前記水側弁体の１次側流路の水圧を前記湯側
圧力ピストンへ導入する湯側パイロット圧導入路と、前
記水側弁体の１次側流路の水圧を前記水側圧力ピストン
へ導入する水側パイロット圧導入路と、前記湯側圧力ピ
ストンへの導入圧を前記湯側弁体の２次側流路へ排出す
る湯側パイロット圧排出路と、前記水側圧力ピストンへ
の導入圧を前記水側弁体の２次側流路へ排出する水側パ
イロット圧排出路と、前記湯側パイロット圧導入路の流
路面積を加減する湯側パイロット圧可変手段と、前記水
側パイロット圧導入路の流路面積を加減する水側パイロ
ット圧可変手段と、湯と水が合流した混合流路に設けた
温度検出器と、混合湯温を設定する設定手段と、この設
定手段と前記温度検出器の信号を比較して前記湯側パイ
ロット圧可変手段および前記水側パイロット圧可変手段
を制御する制御器とを備えて構成するものである。In order to achieve the first object, a hot water mixing apparatus according to the present invention comprises a hot water valve seat and a hot water valve provided in a hot water flow path; A water-side valve seat and a water-side valve element provided in a passage, and a partition piston connected to the hot-side valve element and the water-side valve element via a valve shaft to partition a hot-side flow path and a water-side flow path A water-side pressure piston connected to the water-side valve body, a hot-water-side pressure piston connected to the hot-water valve body, and a water-side pressure of a primary-side flow path of the water-side valve body. A hot-water-side pilot pressure introduction passage for introducing the piston, a water-side pilot pressure introduction passage for introducing the water pressure of the primary flow path of the water-side valve body to the water-side pressure piston, and an introduction to the hot-water-side pressure piston. A hot-water-side pilot pressure discharge path for discharging pressure to the secondary flow path of the hot-water valve body; A water-side pilot pressure discharge passage for discharging to the secondary flow passage of the valve element, a hot-water-side pilot pressure variable means for adjusting a flow passage area of the hot-water-side pilot pressure introduction passage, and a flow of the water-side pilot pressure introduction passage. Water-side pilot pressure variable means for adjusting the road area, a temperature detector provided in a mixing flow path where hot water and water join, setting means for setting the temperature of the mixed hot water, signals from the setting means and the temperature detector And a controller for controlling the hot water side pilot pressure variable means and the water side pilot pressure variable means.
【００１０】また第２の目的を達成するために本発明の
湯水混合装置は、湯側流路に設けられた湯側弁座および
湯側弁体と、水側流路に設けられた水側弁座および水側
弁体と、前記湯側弁体と前記水側弁体に弁軸を介して連
結され、湯側流路と水側流路とを仕切る仕切りピストン
と、前記水側弁体と連結された水側圧力ピストンと、前
記湯側弁体と連結された湯側圧力ピストンと、前記水側
弁体の１次側流路の水圧を前記湯側圧力ピストンへ導入
する湯側パイロット圧導入路と、前記水側弁体の１次側
流路の水圧を前記水側圧力ピストンへ導入する水側パイ
ロット圧導入路と、前記湯側圧力ピストンへの導入圧を
前記湯側弁体の２次側流路へ排出する湯側パイロット圧
排出路と、前記水側圧力ピストンへの導入圧を前記水側
弁体の２次側流路へ排出する水側パイロット圧排出路
と、前記湯側パイロット圧導入路に設けた湯側パイロッ
ト弁座および湯側パイロット弁、通電加熱により前記湯
側パイロット弁を駆動する形状記憶合金とからなる湯側
パイロット圧可変手段と、前記水側パイロット圧導入路
に設けた水側パイロット弁座および水側パイロット弁、
通電加熱により前記水側パイロット弁を駆動する形状記
憶合金とからなる水側パイロット圧可変手段と、湯と水
が合流した混合流路に設けた温度検出器と、混合湯温を
設定する設定手段と、この設定手段と前記温度検出器の
信号を比較して前記湯側パイロット圧可変手段および水
側パイロット圧可変手段を制御する制御器とを備えて構
成するものである。According to another aspect of the present invention, there is provided a hot water mixing apparatus comprising: a hot water valve seat and a hot water valve provided in a hot water flow path; A valve seat and a water-side valve element, a partition piston connected to the hot-water-side valve element and the water-side valve element via a valve shaft, and separating a hot-water-side flow path and a water-side flow path; A water-side pressure piston connected to the hot-water-side valve body, a hot-water-side pressure piston connected to the hot-water-side valve body, and a hot-water-side pilot for introducing the water pressure in the primary flow path of the water-side valve body to the hot-water-side pressure piston. A pressure-introduction path, a water-side pilot pressure introduction path for introducing the water pressure of the primary-side flow path of the water-side valve element to the water-side pressure piston, and a water-side valve element for introducing pressure to the hot-side pressure piston. A hot-water-side pilot pressure discharge path for discharging to the secondary-side flow path of the water-side valve body; A hot water side comprising a water-side pilot pressure discharge path to be discharged, a hot-water-side pilot valve seat and a hot-water-side pilot valve provided in the hot-water-side pilot pressure introduction path, and a shape memory alloy that drives the hot-side pilot valve by energizing heating. Pilot pressure variable means, a water-side pilot valve seat and a water-side pilot valve provided in the water-side pilot pressure introduction path,
Water-side pilot pressure variable means made of a shape memory alloy that drives the water-side pilot valve by energizing heating, a temperature detector provided in a mixing flow path where hot water and water join, and setting means for setting the temperature of the mixed hot water And a controller for comparing the setting means and the signal from the temperature detector to control the hot water side pilot pressure variable means and the water side pilot pressure variable means.
【００１１】また第３の目的を達成するために本発明の
湯水混合装置は、湯側流路に設けられた湯側弁座および
湯側弁体と、水側流路に設けられた水側弁座および水側
弁体と、前記湯側弁体と前記水側弁体に弁軸を介して連
結され、湯側流路と水側流路とを仕切る仕切りピストン
と、前記水側弁体と連結された水側圧力ピストンと、前
記湯側弁体とを連結された湯側圧力ピストンと、前記水
側弁体の１次側流路の水圧を前記湯側圧力ピストンへ導
入する湯側パイロット圧導入路と、前記水側弁体の１次
側流路の水圧を前記水側圧力ピストンへ導入する水側パ
イロット圧導入路と、前記湯側圧力ピストンへの導入圧
を前記湯側弁体の２次側流路へ排出する湯側パイロット
圧排出路と、前記水側圧力ピストンへの導入圧を前記水
側弁体の２次側流路へ排出する水側パイロット圧排出路
と、前記湯側パイロット圧導入路に設けた湯側パイロッ
ト弁座と、前記水側弁体の１次側流路からの水圧に逆ら
って前記湯側パイロット弁座を閉じる方向に付勢する湯
側パイロット弁およびバイアススプリングと、通電加熱
により前記湯側パイロット弁座を開く方向に前記湯側パ
イロット弁を駆動する形状記憶合金ワイヤーとからなる
湯側パイロット圧可変手段と、前記水側パイロット圧導
入路に設けた水側パイロット弁座と、前記水側弁体の１
次側流路からの水圧に逆らって前記水側パイロット弁座
を閉じる方向に付勢する水側パイロット弁およびバイア
ススプリングと、通電加熱により前記水側パイロット弁
座を開く方向に前記水側パイロット弁を駆動する形状記
憶合金ワイヤーとからなる水側パイロット圧可変手段
と、湯と水が合流した混合流路に設けた温度検出器と、
混合湯温を設定する設定手段と、この設定手段と前記温
度検出器の信号を比較して前記湯側パイロット圧可変手
段および水側パイロット圧可変手段を制御する制御器と
を備えて構成するものである。According to another aspect of the present invention, a hot water mixing apparatus according to the present invention comprises: a hot water valve seat and a hot water valve provided in a hot water flow path; A valve seat and a water-side valve element, a partition piston connected to the hot-water-side valve element and the water-side valve element via a valve shaft, and separating a hot-water-side flow path and a water-side flow path; A water-side pressure piston connected to the hot-water-side valve element, a hot-water-side pressure piston connected to the hot-water-side valve element, and a hot-water side for introducing water pressure in a primary-side flow path of the water-side valve element to the hot-water-side pressure piston. A pilot pressure introduction path, a water-side pilot pressure introduction path for introducing the water pressure of the primary side flow path of the water-side valve body to the water-side pressure piston, and a water-side valve for introducing the pressure to the hot-side pressure piston. A hot-water-side pilot pressure discharge passage for discharging to a secondary flow path of the body, and a secondary flow of the water-side valve body for introducing pressure to the water-side pressure piston. A water-side pilot pressure discharge passage for discharging water, a hot-water-side pilot valve seat provided in the hot-water-side pilot pressure introduction passage, and the hot-water-side pilot valve against water pressure from a primary flow path of the water-side valve element. A hot-water-side pilot pressure variable comprising a hot-water-side pilot valve and a bias spring that biases the hot-water-side pilot valve in a direction to open the hot-water-side pilot valve seat by energizing heating. Means, a water-side pilot valve seat provided in the water-side pilot pressure introduction path, and one of the water-side valve bodies.
A water-side pilot valve and a bias spring for urging the water-side pilot valve seat in a direction to close the water-side pilot valve seat against water pressure from the next-side flow path; and the water-side pilot valve in a direction to open the water-side pilot valve seat by energized heating. A water-side pilot pressure variable means consisting of a shape memory alloy wire that drives the water, a temperature detector provided in a mixing flow path where hot water and water join,
One comprising: setting means for setting the mixed hot water temperature; and a controller for comparing the setting means with a signal from the temperature detector to control the hot-water-side pilot pressure variable means and the water-side pilot pressure variable means. It is.
【００１２】[0012]
【作用】本発明の湯水混合装置は上記した構成によっ
て、湯側パイロット圧可変手段および水側パイロット圧
可変手段を、制御器からの信号で駆動することにより、
湯側圧力ピストンおよび水側圧力ピストンに作用する圧
力が変化する。それにともなって、圧力バランス作用に
より、連結してなる湯側弁体と仕切りピストンおよび水
側弁体を移動させ、湯と水の混合比を可変するように作
用する。しかも、湯側および水側パイロット圧導入路の
流路面積は、湯側および水側弁体や仕切りピストンの受
圧面積と比較して桁違いに小さいため、湯側および水側
パイロット圧可変手段に必要な駆動力は桁違いに小さく
できるものである。With the above arrangement, the hot water mixing apparatus of the present invention drives the hot water side pilot pressure variable means and the water side pilot pressure variable means by a signal from the controller.
The pressure acting on the hot water side piston and the water side pressure piston changes. Along with this, the hot water side valve element, the partition piston and the water side valve element, which are connected to each other, are moved by the pressure balance action, so that the mixing ratio of hot water and water is varied. Moreover, since the flow passage areas of the hot water side and water side pilot pressure introduction passages are significantly smaller than the pressure receiving areas of the hot water side and water side valve bodies and the partition pistons, the hot water side and water side pilot pressure variable means are required. The required driving force can be reduced by orders of magnitude.
【００１３】また、本発明の湯水混合装置は前記構成に
より、湯側パイロット圧導入路に設けられ、通電加熱に
より湯側パイロット弁を駆動する湯側パイロット圧可変
手段の形状記憶合金と、水側パイロット圧導入路に設け
られ通電加熱により水側パイロット弁を駆動する水側パ
イロット圧可変手段の形状記憶合金のいずれも、水側弁
体の１次側流路からの水で冷却されるため、いずれの形
状記憶合金も通電量の加減に応じて、急速に変形した
り、元へ戻ったり応答よく変化するよう作用する。例え
ばギヤードモータ等で駆動したり、形状記憶合金を空気
中で使用する構成の場合と比較して、数倍速い応答速度
で湯水混合比の可変制御を可能にするものである。In addition, the hot water mixing apparatus of the present invention having the above-mentioned structure has a shape memory alloy of a hot water pilot pressure variable means provided in the hot water pilot pressure introduction passage for driving the hot water pilot valve by energizing and heating; Since any of the shape memory alloys of the water side pilot pressure variable means provided in the pilot pressure introduction path and driving the water side pilot valve by energization heating is cooled by water from the primary side flow path of the water side valve body, Any shape memory alloy acts so as to be rapidly deformed, return to its original state, or change responsively in accordance with the amount of current supply. For example, it enables variable control of the hot and cold water mixing ratio with a response speed several times faster than the case of driving with a geared motor or the like or using a shape memory alloy in the air.
【００１４】また、本発明の湯水混合装置は前記構成に
より、いずれかの形状記憶合金ワイヤーを通電加熱する
ことによって、湯側パイロット弁座または水側パイロッ
ト弁座を開く方向に湯側パイロット弁または水側パイロ
ット弁が駆動され、湯側圧力ピストンおよび水側圧力ピ
ストンに作用する圧力が変化する。それにともなって、
圧力バランス作用により、連結してなる湯側弁体と仕切
りピストンおよび水側弁体を移動させ、湯と水の混合比
を可変するように作用する。しかも、湯側パイロット弁
および水側パイロット弁とも、水側弁体の１次側流路か
らの水圧に逆らって湯側および水側パイロット弁座を閉
じる方向にバイアススプリングで付勢し、形状記憶合金
ワイヤーへの通電加熱によって弁開する構成のため、湯
側パイロット弁および水側パイロット弁が閉じた状態か
ら開く状態に移行する際、またはその逆の動作の際、湯
側および水側パイロット弁に作用する急激な圧力変化が
防止でき、制御安定性の優れた湯水混合制御を可能にす
る。また、形状記憶合金ワイヤーの通電加熱収縮作用お
よび水冷却伸長作用によって、湯側および水側パイロッ
ト弁の開度がコントロールされる際、形状記憶合金ワイ
ヤーは細く熱容量が小さいため、さらに速い応答の湯水
混合制御を可能にするものである。Further, according to the hot water mixing apparatus of the present invention, by heating the one of the shape memory alloy wires by applying electric current, the hot water pilot valve or the water side pilot valve is opened in a direction to open the hot water pilot valve seat or the water side pilot valve seat. The water side pilot valve is driven, and the pressure acting on the hot water side pressure piston and the water side pressure piston changes. Along with that,
By the pressure balance action, the hot water side valve element, the partitioning piston and the water side valve element which are connected to each other are moved to act to change the mixing ratio of hot water and water. Moreover, both the hot-water-side pilot valve and the water-side pilot valve are urged by a bias spring in a direction to close the hot-water-side and water-side pilot valve seats against the water pressure from the primary flow path of the water-side valve body, and the shape memory is stored. Since the valve is opened by energizing heating of the alloy wire, when the hot-water-side pilot valve and water-side pilot valve transition from the closed state to the open state, or vice versa, the hot-water-side and water-side pilot valves Abrupt pressure changes acting on the water can be prevented, and hot water mixing control with excellent control stability can be realized. In addition, when the opening degree of the hot-water-side and water-side pilot valves is controlled by the current-carrying heat shrinking action and the water-cooling elongation action of the shape memory alloy wire, the shape memory alloy wire is thin and has a small heat capacity, so that the hot water with a faster response can be obtained. This enables mixing control.
【００１５】[0015]
【実施例】以下、本発明の実施例を図面を用いて説明す
る。図１において混合弁本体２２には、湯側流路２３と
水側流路２４があって、湯側流路２３および水側流路２
４から供給される湯と水は、混合弁体２５に至る。混合
弁体２５は、湯側弁体２６と水側弁体２７と、これに弁
軸２８を介して連結された湯側流路と水側流路を仕切る
仕切りピストン２９、さらに湯側弁体２６と連結された
湯側圧力ピストン３０および水側弁体２７と連結された
水側圧力ピストン３１から成っている。湯側弁体２６と
水側弁体２７は、それぞれ湯側流路２３の湯側弁座３
２、水側流路２４の水側弁座３３に臨んで設けられてお
り、湯と水の流量比を反比例的に変えるように構成され
ている。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, the mixing valve body 22 has a hot water side flow path 23 and a water side flow path 24, and the hot water side flow path 23 and the water side flow path 2
Hot water and water supplied from 4 reach mixing valve body 25. The mixing valve body 25 includes a hot-water-side valve element 26 and a water-side valve element 27, a partitioning piston 29 connected to the hot-water-side flow path and the water-side flow path connected via a valve shaft 28, and a hot-water-side valve element. A water side pressure piston 30 connected to the water side valve body 27 and a water side pressure piston 31 connected to the water side valve body 27. The hot water side valve element 26 and the water side valve element 27 are respectively connected to the hot water side valve seat 3 of the hot water side flow path 23.
2. It is provided so as to face the water-side valve seat 33 of the water-side flow path 24, and is configured to change the flow ratio of hot water and water in inverse proportion.
【００１６】さらに混合弁体２５には、水側弁体２７の
１次側流路２４の水圧を湯側圧力ピストン３０へ導入す
る湯側パイロット圧導入路３４と、水側弁体２７の１次
側流路２４の水圧を水側圧力ピストン３１へ導入する水
側パイロット圧導入路３５と、湯側圧力ピストン３０へ
の導入圧を湯側弁体の２次側流路へ排出する湯側パイロ
ット圧排出路３７と、水側圧力ピストン３１への導入圧
を水側弁体２７の２次側流路３６へ排出する水側パイロ
ット圧排出路３８と、湯側パイロット圧導入路３４と、
湯側パイロット圧導入路３４の流路面積を加減する湯側
パイロット圧可変手段３９と、水側パイロット圧導入路
３５の流路面積を加減する水側パイロット圧可変手段４
０が設けられている。混合弁体２５を経て混合比率を調
節された湯と水は、混合流路４１で合流して混ざり、温
度検出器４２に至り混合湯温が検出される。この温度検
出器４２で検出された混合湯温の信号は制御器４３に取
り込まれ、制御器４３で設定手段４４で設定された信号
と比較され、温度偏差を無くすように、制御器４３が湯
側パイロット圧可変手段３９および水側パイロット圧可
変手段４０を制御する。なお、設定手段４４では温度の
設定のほか、給湯の開始、停止の設定、流量の設定がで
きるようになっている。また流量検出器４５は、混合弁
体２５の混合流路４１の下流で、かつ流量制御兼切替弁
４６の上流に設けられ、検出した流量信号を制御器４３
へフィードバックする構成にしてある。設定手段４４で
の給湯の湯温、流量、開始、停止等の設定指示に従っ
て、制御器４３を介して混合弁体２５および流量制御兼
切替弁４６が制御される。流量制御兼切替弁４６を経た
混合湯は、カラン４７やシャワー４８などの給湯対象に
供給される。Further, the mixing valve body 25 has a hot-water pilot pressure introduction path 34 for introducing the water pressure of the primary flow path 24 of the water-side valve body 27 to the hot-water pressure piston 30, and one of the water-side valve bodies 27. A water-side pilot pressure introduction passage 35 for introducing the water pressure of the secondary flow path 24 to the water-side pressure piston 31, and a hot-water side for discharging the introduction pressure to the hot-water pressure piston 30 to the secondary flow path of the hot-side valve element. A pilot pressure discharge path 37, a water-side pilot pressure discharge path 38 for discharging the pressure introduced into the water-side pressure piston 31 to the secondary flow path 36 of the water-side valve body 27, a hot-water-side pilot pressure introduction path 34,
Hot-side pilot pressure variable means 39 for adjusting the flow area of hot-side pilot pressure introduction path 34 and water-side pilot pressure variable means 4 for adjusting the flow area of water-side pilot pressure introduction path 35
0 is provided. The hot water and the water whose mixing ratio has been adjusted via the mixing valve body 25 join and mix in the mixing flow path 41 and reach the temperature detector 42 where the temperature of the mixed hot water is detected. The signal of the mixed hot water temperature detected by the temperature detector 42 is taken into the controller 43 and compared with the signal set by the setting means 44 by the controller 43. The controller 43 controls the hot water so as to eliminate the temperature deviation. The side pilot pressure varying means 39 and the water side pilot pressure varying means 40 are controlled. The setting means 44 can set the start and stop of hot water supply and the flow rate in addition to setting the temperature. The flow rate detector 45 is provided downstream of the mixing flow path 41 of the mixing valve body 25 and upstream of the flow rate control / switching valve 46, and outputs a detected flow rate signal to the controller 43.
It is configured to feed back to. The mixing valve 25 and the flow control / switching valve 46 are controlled via the controller 43 in accordance with setting instructions such as hot water temperature, flow rate, start and stop of the hot water supply by the setting means 44. The mixed hot water that has passed through the flow control / switching valve 46 is supplied to a hot water supply target such as a curan 47 or a shower 48.
【００１７】次に、湯側パイロット圧可変手段３９およ
び水側パイロット圧可変手段４０についてさらに詳述す
る。Next, the hot water side pilot pressure variable means 39 and the water side pilot pressure variable means 40 will be described in further detail.
【００１８】湯側パイロット圧可変手段３９は、水側弁
体２７の１次側流路２４の水圧を湯側圧力ピストン３０
へ導入する湯側パイロット圧導入路３４に、湯側パイロ
ット弁座４９を形成し、その湯側パイロット弁座４９の
開度を可変する湯側パイロット弁５０を通電加熱により
駆動する形状記憶合金５１を設けた構成である。また、
水側パイロット圧可変手段４０も同様に、水側弁体２７
の１次側流路２４の水圧を水側圧力ピストン３１へ導入
する水側パイロット圧導入路３５に、水側パイロット弁
座５２を形成し、その水側パイロット弁座５２の開度を
可変する水側パイロット弁５３を通電加熱により駆動す
る形状記憶合金５４を設けた構成である。The hot-water-side pilot pressure variable means 39 adjusts the water pressure in the primary flow path 24 of the water-side valve body 27 to the hot-water pressure piston 30.
A shape-memory alloy 51 for forming a hot-water-side pilot valve seat 49 in the hot-water-side pilot pressure introducing passage 34 and introducing a hot-water-side pilot valve 50 for varying the opening of the hot-water pilot valve seat 49 by energizing heating. Is provided. Also,
Similarly, the water-side pilot pressure variable means 40 is
A water-side pilot valve seat 52 is formed in a water-side pilot pressure introduction passage 35 for introducing the water pressure of the primary side flow path 24 to the water-side pressure piston 31, and the opening degree of the water-side pilot valve seat 52 is varied. This is a configuration in which a shape memory alloy 54 for driving the water-side pilot valve 53 by electric heating is provided.
【００１９】さらにもっと、湯側パイロット圧可変手段
３９および水側パイロット圧可変手段４０について詳述
する。Further, the hot water side pilot pressure variable means 39 and the water side pilot pressure variable means 40 will be described in detail.
【００２０】湯側パイロット圧可変手段３９は、水側弁
体２７の１次側流路２４からの水圧に逆らって、湯側パ
イロット弁座４９を閉じる方向にバイアススプリング５
５で湯側パイロット弁５０を付勢し、通電加熱により湯
側パイロット弁座４９を開く方向に湯側パイロット弁５
０を駆動する形状記憶合金ワイヤー５１を設けた構成で
ある。また、形状記憶合金ワイヤー５１は線径が約０.1
mm程度で、円錐状の湯側パイロット弁５０の横穴に通し
て両端を通電端子５７，５８に固着されている。また、
水側パイロット圧可変手段４０も同様に、水側弁体２７
の１次側流路２４からの水圧に逆らって、水側パイロッ
ト弁座５２を閉じる方向にバイアススプリング５６で水
側パイロット弁５３を付勢し、通電加熱により湯側パイ
ロット弁座５２を開く方向に水側パイロット弁５３を駆
動する形状記憶合金ワイヤー５４を設けた構成である。
また、形状記憶合金ワイヤー５４も線径が約０.1mm程度
で、円錐状の水側パイロット弁５３の横穴に通して両端
を通電端子５９，６０に固着した構成である。The hot-water-side pilot pressure variable means 39 acts to close the hot-water-side pilot valve seat 49 against the water pressure from the primary-side flow path 24 of the water-side valve body 27 so as to close the bias spring 5.
5, the hot water side pilot valve 50 is urged, and the hot water side pilot valve 5
This is a configuration in which a shape memory alloy wire 51 for driving a zero is provided. The shape memory alloy wire 51 has a wire diameter of about 0.1.
Both ends are fixed to energizing terminals 57 and 58 through a side hole of a conical hot water side pilot valve 50 of about mm. Also,
Similarly, the water-side pilot pressure variable means 40 is
The water-side pilot valve 53 is urged by a bias spring 56 in a direction to close the water-side pilot valve seat 52 against the water pressure from the primary side flow path 24, and the hot-water-side pilot valve seat 52 is opened by energized heating. And a shape memory alloy wire 54 for driving the water side pilot valve 53 is provided.
The shape memory alloy wire 54 also has a wire diameter of about 0.1 mm, and has a configuration in which both ends are fixed to energizing terminals 59 and 60 through a lateral hole of a conical water-side pilot valve 53.
【００２１】次に上記実施例の作用、動作について説明
する。まず、湯側流路２３から供給された湯の圧力は、
湯側弁体２６および仕切りピストン２９に作用する。一
方、水側流路２４から供給された水の圧力は、水側弁体
２７および仕切りピストン２９に作用する。そこで水側
パイロット圧導入路３５の流路面積を可変する水側パイ
ロット圧可変手段４０を、制御器４３からの信号で駆動
することにより、水側圧力ピストン３１に作用する圧力
が変化する。それにともなって、圧力バランス作用によ
り、水側圧力ピストン３１が連結してなる湯側弁体２６
と仕切りピストン２９および水側弁体２７を移動させ、
湯と水の混合比を可変するように作用する。Next, the operation and operation of the above embodiment will be described. First, the pressure of the hot water supplied from the hot water side channel 23 is
It acts on the hot metal side valve element 26 and the partition piston 29. On the other hand, the pressure of the water supplied from the water-side flow path 24 acts on the water-side valve body 27 and the partition piston 29. Therefore, the pressure acting on the water-side pressure piston 31 is changed by driving the water-side pilot pressure variable means 40 for changing the flow area of the water-side pilot pressure introduction passage 35 by a signal from the controller 43. Accordingly, the hot water side valve element 26 to which the water side pressure piston 31 is connected by the pressure balance action.
And the partition piston 29 and the water-side valve body 27 are moved,
It acts to change the mixing ratio of hot water and water.
【００２２】例えば、水側パイロット圧可変手段４０の
水側パイロット弁５３が開度を増すと、水側流路２４か
ら水が水側パイロット圧導入路３５を通って入り、水側
圧力ピストン３１に作用する圧力が、水側弁体２７の１
次圧に近づいて大きくなり、その圧力が水側圧力ピスト
ン３１を押して、水側弁体２７を閉じる方向に動かす力
が増大することになる。一方、湯側圧力ピストン３０に
作用する圧力は、その間とくに変化しないため、力のバ
ランスとしては、湯側弁体２６を閉じ水側弁体２７を開
ける方向の力よりも、湯側弁体２６を開き水側弁体を閉
じる方向の力が勝り、結果として図１のように水に対し
て湯を多く混合する状態になる。逆に、水側パイロット
圧可変手段４０が水側パイロット弁５３の開度を減少さ
せ、湯側パイロット圧可変手段３９の湯側パイロット弁
５０の開度を増大させると、水側流路２４から水が湯側
パイロット圧導入路３４を通って入り、湯側圧力ピスト
ン３０に作用する圧力が、水側弁体２７の１次圧に近づ
いて大きくなり、その圧力が水側圧力ピストン３０を押
して、湯側弁体２６を閉じる方向に動かす力が増大する
ことになる。一方、水側圧力ピストン３１に作用する圧
力は減少するため、この場合、湯側弁体２６を閉じ水側
弁体２７を開ける方向に移動し、結果として湯に対して
水を多く混合する状態になる。このように、制御器４３
からの信号により、湯側パイロット圧可変手段３９およ
び水側パイロット圧可変手段４０を制御することによっ
て、湯と水の混合比を可変制御することができる。しか
も、湯側パイロット圧導入路３４および水側パイロット
圧導入路３５の流路面積は、湯側弁体２６および水側弁
体２７や仕切りピストン２９の受圧面積と比較して桁違
いに小さいため、湯側パイロット圧可変手段３９および
水側パイロット圧可変手段４０に必要な駆動力は桁違い
に小さくできる。したがって、湯側パイロット圧可変手
段３９および水側パイロット圧可変手段４０は、低消費
電力で小型コンパクトにすることができる。For example, when the water-side pilot valve 53 of the water-side pilot pressure variable means 40 increases the opening, water enters from the water-side flow path 24 through the water-side pilot pressure introduction path 35 and the water-side pressure piston 31 Pressure acting on the water side valve body 27
The pressure approaches the next pressure and increases, and the pressure pushes the water-side pressure piston 31 to move the water-side valve body 27 in the closing direction. On the other hand, since the pressure acting on the hot water side pressure piston 30 does not change during that time, the balance of the force is higher than the force in the direction of closing the hot water side valve element 26 and opening the water side valve element 27. And the force in the direction of closing the water-side valve body prevails, and as a result, as shown in FIG. Conversely, when the water-side pilot pressure variable means 40 decreases the opening of the water-side pilot valve 53 and increases the opening of the hot-side pilot valve 50 of the hot-side pilot pressure variable means 39, the water-side flow path 24 Water enters through the hot-water-side pilot pressure introduction passage 34, and the pressure acting on the hot-water-side pressure piston 30 approaches the primary pressure of the water-side valve body 27 and increases. Thus, the force for moving the hot-water-side valve body 26 in the closing direction increases. On the other hand, since the pressure acting on the water-side pressure piston 31 decreases, in this case, the hot-water-side valve body 26 is closed and the water-side valve body 27 is moved in a direction in which the water-side valve body 27 is opened. become. Thus, the controller 43
By controlling the hot-water-side pilot pressure variable means 39 and the water-side pilot pressure variable means 40 based on the signal from the controller, the mixing ratio of hot water and water can be variably controlled. Moreover, the flow passage areas of the hot-water pilot pressure introduction passage 34 and the water-side pilot pressure introduction passage 35 are significantly smaller than the pressure-receiving areas of the hot-water valve body 26, the water-side valve body 27, and the partition piston 29. The driving force required for the hot-water-side pilot pressure variable means 39 and the water-side pilot pressure variable means 40 can be significantly reduced. Therefore, the hot-water-side pilot pressure variable means 39 and the water-side pilot pressure variable means 40 can be small and compact with low power consumption.
【００２３】つまり、湯側パイロット圧可変手段３９お
よび水側パイロット圧可変手段４０を、制御器４３から
の信号で駆動することにより、湯側圧力ピストン３０お
よび水側圧力ピストン３１に作用する圧力が変化する。
それにともなって、圧力バランス作用により、連結して
なる湯側弁体２６と仕切りピストン２９および水側弁体
２７を移動させ、湯と水の混合比を可変できる。しかも
低消費電力で小型コンパクトな湯水混合装置が可能にな
る。That is, by driving the hot-water-side pilot pressure variable means 39 and the water-side pilot pressure variable means 40 with a signal from the controller 43, the pressure acting on the hot-water pressure piston 30 and the water-side pressure piston 31 is increased. Change.
Along with this, the hot water side valve body 26, the partitioning piston 29 and the water side valve body 27 which are connected to each other are moved by the pressure balance action, so that the mixing ratio of hot water and water can be varied. Moreover, a small and compact water / water mixing device with low power consumption can be realized.
【００２４】また、上記実施例の湯水混合装置は前記構
成により、湯側パイロット圧可変手段３９および水側パ
イロット圧可変手段４０にて、湯側パイロット圧導入路
３４および水側パイロット圧導入路３５の流路面積を可
変すると、湯側圧力ピストン３０および水側圧力ピスト
ン３１に作用する圧力が変化し、湯側弁体２６および水
側弁体２７が駆動され、湯水の混合比が変化する。しか
も、一般的に水側流路２４の圧力は湯側流路２３の圧力
よりも高く、湯側圧力ピストン３０および水側圧力ピス
トン３１へは、湯側パイロット圧導入路３４および水側
パイロット圧導入路３５を介していずれにも圧力の高い
水側流路２４の水圧を導き、その湯側パイロット圧導入
路３４および水側パイロット圧導入路３５に設けた湯側
パイロット圧可変手段３９および水側パイロット圧可変
手段４０の、湯側パイロット弁５０および水側パイロッ
ト弁５３の開度をそれぞれ制御する構成にしたことによ
って、湯水の混合比を大きく変化させられる。例えば湯
側パイロット圧可変手段３９にて湯側パイロット圧導入
路３４の流路面積を全閉し、水側パイロット圧可変手段
４０にて水側パイロット圧導入路３５の流路面積を全開
すると、水側弁体２７が水側弁座３３を全閉し、湯側弁
体２６が湯側弁座３２を全開するように作用し、逆に湯
側パイロット圧可変手段３９にて湯側パイロット圧導入
路３４の流路面積を全開し、水側パイロット圧可変手段
４０にて水側パイロット圧導入路３５の流路面積を全閉
すると、水側弁体２７が水側弁座３３を全開し、湯側弁
体２６が湯側弁座３２を全閉するように作用する。つま
り、湯水の混合比を広範囲に大きく変化させることが可
能となる。もう少し詳しく説明すると、まず湯側流路２
３からの湯の圧力は、ほぼ同じ受圧面積の湯側弁体２６
および仕切りピストン２９にそれぞれ逆向きに作用し
て、相互の力でほぼ打ち消し合う。一方、水側流路２４
からの水の圧力は、仕切りピストン２９およびそれとほ
ぼ同じ受圧面積の水側弁体２７とそれぞれ逆向きに作用
して、相互の力でほぼ打ち消し合う。そこで、湯側圧力
ピストン３０および水側圧力ピストン３１に、湯側パイ
ロット圧導入路３４および水側パイロット圧導入路３５
を介していずれにも水側流路２４の水圧が導かれるが、
その湯側パイロット圧導入路３４および水側パイロット
圧導入路３５に設けた湯側パイロット圧可変手段３９お
よび水側パイロット圧可変手段４０の、湯側パイロット
弁５０および水側パイロット弁５３の開度を制御器４３
で行うことにより、圧力バランス作用によって、湯側弁
体２６および水側弁体２７の開度を任意に可変できる。
つまり、湯と水の混合比は、ほとんど水だけの状態から
ほとんど湯だけの状態まで、湯側パイロット圧可変手段
３９および水側パイロット圧可変手段４０の小さい駆動
力によって、広範囲に大きく任意に制御することができ
る。In the hot water mixing apparatus of the above embodiment, the hot water pilot pressure introducing means 34 and the water water pilot pressure introducing path 35 are provided by the hot water pilot pressure varying means 39 and the water pilot pressure varying means 40. Is varied, the pressure acting on the hot water side pressure piston 30 and the water side pressure piston 31 changes, the hot water side valve element 26 and the water side valve element 27 are driven, and the mixing ratio of hot water changes. In addition, the pressure of the water-side flow path 24 is generally higher than the pressure of the hot-water side flow path 23, and the hot-water-side pilot pressure introduction passage 34 and the water-side pilot pressure The water pressure in the water-side flow path 24 having a high pressure is guided through the introduction path 35, and the hot-water-side pilot pressure variable means 39 provided in the hot-water-side pilot pressure introduction path 34 and the water-side pilot pressure introduction path 35, With the configuration in which the opening degrees of the hot water side pilot valve 50 and the water side pilot valve 53 of the side pilot pressure variable means 40 are controlled respectively, the mixing ratio of hot water can be largely changed. For example, when the hot water side pilot pressure variable means 39 completely closes the flow path area of the hot water side pilot pressure introduction path 34 and the water side pilot pressure variable means 40 fully opens the flow path area of the water side pilot pressure introduction path 35, The water-side valve body 27 acts to fully close the water-side valve seat 33 and the hot-water valve body 26 fully opens the hot-water valve seat 32. When the flow passage area of the introduction passage 34 is fully opened and the flow passage area of the water-side pilot pressure introduction passage 35 is completely closed by the water-side pilot pressure variable means 40, the water-side valve body 27 fully opens the water-side valve seat 33. The hot-water-side valve body 26 acts to fully close the hot-water-side valve seat 32. That is, the mixing ratio of hot and cold water can be largely changed over a wide range. To explain in more detail, first, the hot water side flow path 2
The pressure of the hot water from 3 is substantially equal to the hot water side valve body 26 having the same pressure receiving area.
And acts on the partitioning piston 29 in opposite directions, and almost cancel each other out due to mutual force. On the other hand, the water-side flow path 24
Pressure acts on the partition piston 29 and the water-side valve body 27 having substantially the same pressure-receiving area as the partition piston 29, respectively, and almost cancel each other out due to mutual forces. Therefore, the hot-water-side pilot pressure introduction passage 34 and the water-side pilot pressure introduction passage 35 are provided to the hot-water-side pressure piston 30 and the water-side pressure piston 31.
The water pressure of the water-side flow path 24 is guided to both via
Openings of the hot-water pilot valve 50 and the water-side pilot valve 53 of the hot-water pilot pressure variable means 39 and the water-side pilot pressure variable means 40 provided in the hot-water pilot pressure introduction path 34 and the water-side pilot pressure introduction path 35, respectively. Controller 43
The opening degree of the hot water side valve element 26 and the water side valve element 27 can be arbitrarily varied by the pressure balance action.
That is, the mixing ratio of hot water and water can be arbitrarily controlled over a wide range from a state of almost only water to a state of almost only hot water by a small driving force of the hot-water-side pilot pressure variable means 39 and the water-side pilot pressure variable means 40. can do.
【００２５】なお、上記実施例の湯水混合装置は、湯水
が流れると湯側弁体２６、仕切りピストン２９、水側弁
体２７、湯側圧力ピストン３０、水側圧力ピストン３１
が旋回する。それは、湯側弁体２６および水側弁体２７
の周囲に、湯水の流れを受けて同じ方向に回転力を発生
する旋回翼６１，６２を形成してあることにする。すな
わち、旋回翼６１，６２は、湯側弁体２６および水側弁
体２７の外周に、弁軸２８の軸心に対して約４０度の角
度で傾斜して数枚の羽根を固着形成してあるため、湯や
水が湯側流路２３および水側流路２４から混合流路４１
へ流れる際、旋回翼６１，６２へ当りながら流れるの
で、この湯水の流れの力によって、湯側弁体２６，仕切
りピストン２９，水側弁体２７，湯側圧力ピストン３
０，水側圧力ピストン３１，弁軸２８が共に旋回する。
この旋回をすることによって、仕切りピストン２９とシ
リンダ６３との間のゴミ噛み等による混合弁体２５の固
着が防止できる。これは仕切りピストン２９等が旋回す
ることによって、ゴミなどの異物も同時に旋回し、一部
に集中することなく分散されて流れ去ったり、旋回する
ことによって水垢等の堆積も防止できることなどの理由
が考えられる。模擬的なゴミ混入によるゴミ詰まり耐久
実験においても、旋回による混合弁体２５の固着防止効
果は顕著である。またそれだけではなく、旋回翼６１，
６２を設けた構成により、湯側弁体２６，仕切りピスト
ン２９，水側弁体２７，弁軸２８等が共に旋回すること
によって、弁軸２８の軸心方向に移動するときの摺動抵
抗が極小にでき、湯側パイロット圧可変手段３９および
水側パイロット圧可変手段４０の制御に忠実で、かつ円
滑な混合比制御が可能になるといった効果もある。In the hot water mixing apparatus of the above embodiment, when hot water flows, the hot water side valve element 26, the partition piston 29, the water side valve element 27, the hot water side pressure piston 30, the water side pressure piston 31
Turns. The hot-side valve body 26 and the water-side valve body 27
Are formed around the swirling blades 61 and 62 which generate a rotational force in the same direction in response to the flow of hot and cold water. That is, the swirling vanes 61 and 62 are formed by fixing several blades to the outer periphery of the hot water side valve element 26 and the water side valve element 27 at an angle of about 40 degrees with respect to the axis of the valve shaft 28. Hot water or water flows from the hot water side flow path 23 and the water side flow path 24 to the mixing flow path 41.
When flowing, the hot water flows while hitting the swirling vanes 61 and 62, so that the hot water flow force causes the hot water valve body 26, the partition piston 29, the water side valve body 27, and the hot water pressure piston 3.
0, the water-side pressure piston 31, and the valve shaft 28 are swiveled together.
By performing this turning, it is possible to prevent the mixing valve body 25 from being fixed by the dust between the partitioning piston 29 and the cylinder 63. This is because foreign matter such as dust is simultaneously swirled by the swiveling of the partition piston 29 and the like, and is dispersed and flows away without concentrating on a part, and accumulation of water scale and the like is prevented by swirling. Conceivable. Even in a simulated garbage endurance test due to garbage mixing, the effect of preventing the mixing valve body 25 from sticking due to the turning is remarkable. Not only that, but also swirl wings 61,
With the configuration provided with 62, the sliding resistance when moving in the axial direction of the valve shaft 28 is reduced by the fact that the hot water side valve body 26, the partition piston 29, the water side valve body 27, the valve shaft 28, and the like rotate together. There is also an effect that the mixture ratio can be minimized, and the mixture ratio can be controlled smoothly and faithfully in the control of the hot-water-side pilot pressure variable means 39 and the water-side pilot pressure variable means 40.
【００２６】また、上記実施例の湯水混合装置は前記構
成により、湯側パイロット圧導入路３４に設けられ、通
電加熱によって湯側パイロット弁３４を駆動する湯側パ
イロット圧可変手段３９の形状記憶合金５１および、水
側パイロット圧導入路３５に設けられ、通電加熱により
水側パイロット弁５３を駆動する水側パイロット圧可変
手段４０の形状記憶合金５４とも、水側弁体２７の１次
側流路からの水で冷却される構成のため、これら形状記
憶合金５１，５４の通電加熱による変形は、通電量の加
減に応じて、変形したり急速に元へ戻ったり応答よく変
化させることができる。例えば、ギヤードモータ等で駆
動したり、形状記憶合金を空気中で使用する構成の場合
と比較して、数倍速い応答速度で湯水混合比の可変制御
が可能になる。Further, the hot water mixing apparatus of the above embodiment is provided in the hot water pilot pressure introducing passage 34 and has a shape memory alloy of the hot water pilot pressure variable means 39 for driving the hot water pilot valve 34 by electric heating. 51 and the shape memory alloy 54 of the water-side pilot pressure variable means 40 which is provided in the water-side pilot pressure introduction passage 35 and drives the water-side pilot valve 53 by energizing heating. Since the configuration is cooled by water, the shape memory alloys 51 and 54 can be deformed or quickly returned to the original shape or responsively changed according to the amount of energization depending on the amount of energization. For example, variable control of the mixture ratio of hot water and water can be performed with a response speed several times faster than in the case of driving with a geared motor or the like or using a shape memory alloy in the air.
【００２７】また、上記実施例の湯水混合装置は前記構
成により、形状記憶合金ワイヤー５１，５４に通電加熱
することによって、湯側パイロット弁座４９および水側
パイロット弁座５２を開く方向に湯側パイロット弁５０
および水側パイロット弁５３が駆動され、湯側圧力ピス
トン３０および水側圧力ピストン３１に作用する圧力が
変化する。それにともなって、圧力バランス作用によ
り、連結してなる湯側弁体２６と仕切りピストン２９お
よび水側弁体２７を移動させ、湯と水の混合比を可変す
るように作用する。しかも、湯側パイロット弁５０およ
び水側パイロット弁５３とも、水側弁体２７の１次側流
路２４からの水圧に逆らって湯側パイロット弁座４９お
よび水側パイロット弁座５２を閉じる方向にバイアスス
プリング５５，５６で付勢し、形状記憶合金ワイヤー５
１，５４の通電加熱制御によって弁開度をコントロール
する構成のため、湯側パイロット弁５０および水側パイ
ロット弁５３が閉じた状態から開く状態に移行する際、
およびその逆の動作の際、湯側パイロット弁５０または
水側パイロット弁５３に作用する急激な圧力変化を防止
でき、制御安定性の優れた湯水混合制御が可能になる。
たとえば、もし仮に湯側パイロット弁５０および水側パ
イロット弁５３が、水側弁体２７の１次側流路２４から
の水圧およびバイアススプリング５５，５６によって、
湯側パイロット弁座４９および水側パイロット弁座５２
を閉じる方向に付勢され、形状記憶合金ワイヤー５１，
５４の通電加熱制御によって弁開度をコントロールする
構成であった場合、湯側パイロット弁５０または水側パ
イロット弁５３が、開き始める瞬間および閉じ終わる瞬
間に閉じる方向の流体作用力が急激に変化し、開き始め
と閉じ終わりが急激な変化をしてしまい、結果として湯
側弁体２６および水側弁体２７の開き始めおよび閉じ終
わりが急激な動作となり、いわゆるウォーターハンマ現
象の原因にもなりかねない。上記実施例の場合、このよ
うなウォーターハンマの防止もできる。Further, the hot water mixing apparatus of the above-described embodiment has the above-described configuration, in which the shape memory alloy wires 51 and 54 are energized and heated to open the hot pilot valve seat 49 and the water pilot valve seat 52 in the opening direction. Pilot valve 50
And the water side pilot valve 53 is driven, and the pressure acting on the hot water side pressure piston 30 and the water side pressure piston 31 changes. Accordingly, the hot water side valve body 26, the partitioning piston 29, and the water side valve body 27 which are connected to each other are moved by the pressure balance action, so that the mixing ratio of hot water and water is varied. In addition, both the hot-water-side pilot valve 50 and the water-side pilot valve 53 move in a direction to close the hot-water-side pilot valve seat 49 and the water-side pilot valve seat 52 against the water pressure from the primary flow path 24 of the water-side valve body 27. The shape memory alloy wire 5 is urged by bias springs 55 and 56.
Since the valve opening is controlled by the energization heating control of 1, 54, when the hot water side pilot valve 50 and the water side pilot valve 53 shift from the closed state to the open state,
At the time of the reverse operation, the rapid pressure change acting on the hot water side pilot valve 50 or the water side pilot valve 53 can be prevented, and hot water mixing control with excellent control stability can be performed.
For example, if the hot water side pilot valve 50 and the water side pilot valve 53 are supposed to be operated by the water pressure from the primary side flow path 24 of the water side valve body 27 and the bias springs 55 and 56,
Hot water side pilot valve seat 49 and water side pilot valve seat 52
Is urged in the closing direction, and the shape memory alloy wire 51,
When the valve opening is controlled by the energization heating control of 54, the fluid acting force in the closing direction of the hot water side pilot valve 50 or the water side pilot valve 53 suddenly changes at the moment of starting to open and the moment of closing. However, the opening and closing ends suddenly change, and as a result, the opening and closing of the hot-side valve element 26 and the water-side valve element 27 become abrupt, which may cause a so-called water hammer phenomenon. Absent. In the case of the above embodiment, such a water hammer can be prevented.
【００２８】また、形状記憶合金ワイヤー５１，５４の
通電加熱による収縮作用および水冷却による伸長によっ
て、湯側パイロット弁５０および水側パイロット弁５３
の弁開度がコントロールされる際、形状記憶合金ワイヤ
ー５１，５４は線径が０.1mm程度と細く熱容量が小さい
ため、すばやい加熱冷却が可能となり、さらに速い応答
の湯水混合制御ができる。The contraction effect of the shape memory alloy wires 51 and 54 by the electric heating and the elongation by the water cooling cause the hot-side pilot valve 50 and the water-side pilot valve 53.
When the valve opening degree is controlled, the shape memory alloy wires 51 and 54 have a small diameter of about 0.1 mm and a small heat capacity, so that quick heating and cooling can be performed, and hot water / water mixing control can be performed more quickly.
【００２９】さらにまた、湯側パイロット圧可変手段３
９および水側パイロット圧可変手段４０のアクチュエー
タ手段が、形状記憶合金ワイヤー５１，５４で構成され
ていることにより、モータや電磁ソレノイド等のアクチ
ュエータ手段と異なり、極めて小型軽量化が実現でき、
蛇口一体型のコンパクトな湯水混合装置が可能となり、
設置工事性を大幅に向上できる。Further, the hot-water-side pilot pressure variable means 3
9 and the actuator means of the water-side pilot pressure variable means 40 are constituted by the shape memory alloy wires 51 and 54, so that, unlike actuator means such as a motor and an electromagnetic solenoid, extremely small and light weight can be realized.
A faucet integrated compact hot and cold water mixing device becomes possible,
Installation workability can be greatly improved.
【００３０】[0030]
【発明の効果】以上のように本発明の湯水混合装置によ
れば、次の効果が得られる。As described above, according to the apparatus for mixing hot and cold water of the present invention, the following effects can be obtained.
【００３１】（１）湯側および水側パイロット圧導入路
の流路面積を可変する湯側パイロット圧可変手段および
水側パイロット圧可変手段を、制御器からの信号で駆動
し、湯側圧力ピストンおよび水側圧力ピストンに作用す
る圧力を変化させる構成なので、極めて小さい駆動力
で、湯と水の混合比を可変できる。したがって、低消費
電力で小型コンパクトな湯水混合装置が得られる。(1) The hot water side pilot pressure variable means and the water side pilot pressure variable means for changing the flow area of the hot water side and water side pilot pressure introduction passages are driven by a signal from the controller, and the hot water side pressure piston Further, since the pressure acting on the water-side pressure piston is changed, the mixing ratio of hot water and water can be varied with an extremely small driving force. Therefore, a small and compact hot and cold water mixing device with low power consumption can be obtained.
【００３２】（２）湯側パイロット弁を駆動する湯側パ
イロット圧可変手段の形状記憶合金と、水側パイロット
弁を駆動する水側パイロット圧可変手段の形状記憶合金
のいずれも、水側弁体の１次側流路からの水で冷却され
る構成なので、いずれの形状記憶合金も通電量の加減に
応じて、急速な変形復元が可能になり、高速応答の湯水
混合比制御ができる。(2) Both the shape memory alloy of the hot-side pilot pressure variable means for driving the hot-side pilot valve and the shape memory alloy of the water-side pilot pressure variable means for driving the water-side pilot valve are water-side valve bodies. Because of the configuration cooled by the water from the primary side flow path, any shape memory alloy can rapidly restore the deformation in accordance with the amount of current supply, and can control the hot water / water mixing ratio with high speed response.
【００３３】（３）湯側パイロット弁および水側パイロ
ット弁とも、水側弁体の１次側流路からの水圧に逆らっ
て湯側および水側パイロット弁座を閉じる方向にバイア
ススプリングで付勢し、形状記憶合金ワイヤーへの通電
加熱によって弁を開成する構成なので、湯側パイロット
弁および水側パイロット弁が閉じた状態から開く状態に
移行する際、またはその逆の動作の際、湯側および水側
パイロット弁に作用する急激な圧力変化を防止でき、制
御安定性の優れた湯水混合制御が可能になる。また、形
状記憶合金ワイヤーは細く熱容量が小さいため、さらに
速い応答の湯水混合制御をすることができる。(3) Both the hot water side pilot valve and the water side pilot valve are biased by a bias spring in a direction to close the hot water side and water side pilot valve seats against the water pressure from the primary side flow path of the water side valve body. Since the valve is opened by energizing and heating the shape memory alloy wire, when the hot-water-side pilot valve and the water-side pilot valve transition from the closed state to the open state, or in the reverse operation, A sudden change in pressure acting on the water-side pilot valve can be prevented, and hot water mixing control with excellent control stability can be performed. In addition, since the shape memory alloy wire is thin and has a small heat capacity, it is possible to perform hot water mixing control with a faster response.
【図１】本発明の実施例における湯水混合装置の断面図FIG. 1 is a sectional view of a hot water mixing apparatus according to an embodiment of the present invention.
【図２】従来の湯水混合装置の断面図FIG. 2 is a cross-sectional view of a conventional hot water mixing apparatus.
２３ 湯側流路 ２４ 水側流路 ２６ 湯側弁体 ２７ 水側弁体 ２８ 弁軸 ３０ 湯側圧力ピストン ３１ 水側圧力ピストン ３２ 湯側弁座 ３３ 水側弁座 ３４ 湯側パイロット圧導入路 ３５ 水側パイロット圧導入路 ３６ ２次側流路 ３７ 湯側パイロット圧排出路 ３８ 水側パイロット圧排出路 ３９ 湯側パイロット圧可変手段 ４０ 水側パイロット圧可変手段 ４１ 混合流路 ４２ 温度検出器 ４３ 制御器 ４４ 設定手段 ４９ 湯側パイロット弁座 ５０ 湯側パイロット弁 ５１，５４ 形状記憶合金 ５２ 水側パイロット弁座 ５３ 水側パイロット弁 ５５，５６ バイアススプリング 23 hot water side flow path 24 water side flow path 26 hot water side valve element 27 water side valve element 28 valve shaft 30 hot water side pressure piston 31 water side pressure piston 32 hot water side valve seat 33 water side valve seat 34 hot water side pilot pressure introduction path 35 water side pilot pressure introduction path 36 secondary side flow path 37 hot water side pilot pressure discharge path 38 water side pilot pressure discharge path 39 hot water side pilot pressure variable means 40 water side pilot pressure variable means 41 mixing flow path 42 temperature detector 43 Controller 44 Setting means 49 Hot water side pilot valve seat 50 Hot water side pilot valve 51, 54 Shape memory alloy 52 Water side pilot valve seat 53 Water side pilot valve 55, 56 Bias spring
Claims (3)
弁体と、水側流路に設けられた水側弁座および水側弁体
と、前記湯側弁体と前記水側弁体に弁軸を介して連結さ
れ、湯側流路と水側流路とを仕切る仕切りピストンと、
前記水側弁体と連結された水側圧力ピストンと、前記湯
側弁体と連結された湯側圧力ピストンと、前記水側弁体
の１次側流路の水圧を前記湯側圧力ピストンへ導入する
湯側パイロット圧導入路と、前記水側弁体の１次側流路
の水圧を前記水側圧力ピストンへ導入する水側パイロッ
ト圧導入路と、前記湯側圧力ピストンへの導入圧を前記
湯側弁体の２次側流路へ排出する湯側パイロット圧排出
路と、前記水側圧力ピストンへの導入圧を前記水側弁体
の２次側流路へ排出する水側パイロット圧排出路と、前
記湯側パイロット圧導入路の流路面積を加減する湯側パ
イロット圧可変手段と、前記水側パイロット圧導入路の
流路面積を加減する水側パイロット圧可変手段と、湯と
水が合流した混合流路に設けた温度検出器と、混合湯温
を設定する設定手段と、この設定手段と前記温度検出器
の信号を比較して前記湯側パイロット圧可変手段および
前記水側パイロット圧可変手段を制御する制御器とを備
えた湯水混合装置。A hot water side valve seat and a hot water side valve element provided in the hot water side flow path; a water side valve seat and a water side valve element provided in the water side flow path; A partition piston that is connected to the water-side valve body via a valve shaft and that separates a hot water-side flow path and a water-side flow path;
A water-side pressure piston connected to the water-side valve element, a hot-side pressure piston connected to the hot-side valve element, and a water pressure in a primary-side flow path of the water-side valve element to the hot-side pressure piston. A hot-water-side pilot pressure introduction path, a water-side pilot pressure introduction path for introducing the water pressure of the primary-side flow path of the water-side valve body to the water-side pressure piston, and an introduction pressure to the hot-water-side pressure piston. A hot-water pilot pressure discharge path for discharging the secondary-side flow path of the hot-water valve body, and a water-side pilot pressure for discharging the pressure introduced to the water-side pressure piston to the secondary flow path of the water-side valve body A discharge path, a hot-water-side pilot pressure variable means for adjusting the flow area of the hot-water-side pilot pressure introduction path, a water-side pilot pressure variable means for adjusting the flow area of the water-side pilot pressure introduction path, A temperature detector provided in the mixing channel where the water joins, and a setting means for setting the temperature of the mixed hot water When, hot and cold water mixing device and a controller for controlling the hot water side pilot pressure varying means and the water-side pilot pressure varying means compares the signal of the temperature detector and the setting means.
弁体と、水側流路に設けられた水側弁座および水側弁体
と、前記湯側弁体と前記水側弁体に弁軸を介して連結さ
れ、湯側流路と水側流路とを仕切る仕切りピストンと、
前記水側弁体と連結された水側圧力ピストンと、前記湯
側弁体と連結された湯側圧力ピストンと、前記水側弁体
の１次側流路の水圧を前記湯側圧力ピストンへ導入する
湯側パイロット圧導入路と、前記水側弁体の１次側流路
の水圧を前記水側圧力ピストンへ導入する水側パイロッ
ト圧導入路と、前記湯側圧力ピストンへの導入圧を前記
湯側弁体の２次側流路へ排出する湯側パイロット圧排出
路と、前記水側圧力ピストンへの導入圧を前記水側弁体
の２次側流路へ排出する水側パイロット圧排出路と、前
記湯側パイロット圧導入路に設けた湯側パイロット弁座
および湯側パイロット弁、通電加熱により前記湯側パイ
ロット弁を駆動する形状記憶合金とからなる湯側パイロ
ット圧可変手段と、前記水側パイロット圧導入路に設け
た水側パイロット弁座および水側パイロット弁、通電加
熱により前記水側パイロット弁を駆動する形状記憶合金
とからなる水側パイロット圧可変手段と、湯と水が合流
した混合流路に設けた温度検出器と、混合湯温を設定す
る設定手段と、この設定手段と前記温度検出器の信号を
比較して前記湯側パイロット圧可変手段および水側パイ
ロット圧可変手段を制御する制御器とを備えた湯水混合
装置。2. A hot water side valve seat and a hot water side valve body provided in a hot water side flow path, a water side valve seat and a water side valve body provided in a water side flow path, the hot water side valve body and the hot water side valve body. A partition piston that is connected to the water-side valve body via a valve shaft and that separates a hot water-side flow path and a water-side flow path;
A water-side pressure piston connected to the water-side valve element, a hot-side pressure piston connected to the hot-side valve element, and a water pressure in a primary-side flow path of the water-side valve element to the hot-side pressure piston. A hot-water-side pilot pressure introduction path, a water-side pilot pressure introduction path for introducing the water pressure of the primary-side flow path of the water-side valve body to the water-side pressure piston, and an introduction pressure to the hot-water-side pressure piston. A hot-water pilot pressure discharge path for discharging the secondary-side flow path of the hot-water valve body, and a water-side pilot pressure for discharging the pressure introduced to the water-side pressure piston to the secondary flow path of the water-side valve body A discharge path, a hot-water-side pilot pressure variable means comprising a hot-water-side pilot valve seat and a hot-water-side pilot valve provided in the hot-water-side pilot pressure introduction path, and a shape memory alloy that drives the hot-water-side pilot valve by energizing heating; Water side pilot provided in the water side pilot pressure introduction path A water-side pilot pressure variable means made of a seat and a water-side pilot valve, a shape memory alloy for driving the water-side pilot valve by energizing heating, a temperature detector provided in a mixing flow path where hot water and water join, A hot and cold water mixing apparatus comprising: setting means for setting hot water temperature; and a controller for comparing the setting means with a signal from the temperature detector to control the hot water side pilot pressure variable means and the water side pilot pressure variable means.
弁体と、水側流路に設けられた水側弁座および水側弁体
と、前記湯側弁体と前記水側弁体に弁軸を介して連結さ
れ、湯側流路と水側流路とを仕切る仕切りピストンと、
前記水側弁体と連結された水側圧力ピストンと、前記湯
側弁体と連結された湯側圧力ピストンと、前記水側弁体
の１次側流路の水圧を前記湯側圧力ピストンへ導入する
湯側パイロット圧導入路と、前記水側弁体の１次側流路
の水圧を前記水側圧力ピストンへ導入する水側パイロッ
ト圧導入路と、前記湯側圧力ピストンへの導入圧を前記
湯側弁体の２次側流路へ排出する湯側パイロット圧排出
路と、前記水側圧力ピストンへの導入圧を前記水側弁体
の２次側流路へ排出する水側パイロット圧排出路と、前
記湯側パイロット圧導入路に設けた湯側パイロット弁座
と、前記水側弁体の１次側流路からの水圧に逆らって前
記湯側パイロット弁座を閉じる方向に付勢する湯側パイ
ロット弁およびバイアススプリングと、通電加熱により
前記湯側パイロット弁座を開く方向に前記湯側パイロッ
ト弁を駆動する形状記憶合金ワイヤーとからなる湯側パ
イロット圧可変手段と、前記水側パイロット圧導入路に
設けた水側パイロット弁座と、前記水側弁体の１次側流
路からの水圧に逆らって前記水側パイロット弁座を閉じ
る方向に付勢する水側パイロット弁およびバイアススプ
リングと、通電加熱により前記水側パイロット弁座を開
く方向に前記水側パイロット弁を駆動する形状記憶合金
ワイヤーとからなる水側パイロット圧可変手段と、湯と
水が合流した混合流路に設けた温度検出器と、混合湯温
を設定する設定手段と、この設定手段と前記温度検出器
の信号を比較して前記湯側パイロット圧可変手段および
水側パイロット圧可変手段を制御する制御器とを備えた
湯水混合装置。3. A hot water side valve seat and a hot water side valve body provided in a hot water side flow path; a water side valve seat and a water side valve body provided in a water side flow path; A partition piston that is connected to the water-side valve body via a valve shaft and that separates a hot water-side flow path and a water-side flow path;
A water-side pressure piston connected to the water-side valve element, a hot-side pressure piston connected to the hot-side valve element, and a water pressure in a primary-side flow path of the water-side valve element to the hot-side pressure piston. A hot-water-side pilot pressure introduction path, a water-side pilot pressure introduction path for introducing the water pressure of the primary-side flow path of the water-side valve body to the water-side pressure piston, and an introduction pressure to the hot-water-side pressure piston. A hot-water pilot pressure discharge path for discharging the secondary-side flow path of the hot-water valve body, and a water-side pilot pressure for discharging the pressure introduced to the water-side pressure piston to the secondary flow path of the water-side valve body A discharge path, a hot-water-side pilot valve seat provided in the hot-water-side pilot pressure introduction path, and a bias in a direction to close the hot-water-side pilot valve seat against water pressure from a primary flow path of the water-side valve element. Hot water pilot valve and bias spring, and the hot water pilot A hot water pilot pressure variable means comprising a shape memory alloy wire for driving the hot water pilot valve in a direction to open the valve seat, a water pilot valve seat provided in the water pilot pressure introduction path, and the water valve A water-side pilot valve and a bias spring for urging the water-side pilot valve seat in a direction to close the water-side pilot valve seat against water pressure from a primary side flow path of the body, and the water-side pilot valve in a direction to open the water-side pilot valve seat by energized heating; Water-side pilot pressure variable means comprising a shape memory alloy wire for driving a side pilot valve, a temperature detector provided in a mixing flow path where hot water and water join, setting means for setting the mixed hot water temperature, and setting A hot water mixing apparatus comprising: means for comparing the signal from the temperature detector with the controller for controlling the hot water pilot pressure variable means and the water pilot pressure variable means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24160292A JP3289334B2 (en) | 1992-09-10 | 1992-09-10 | Hot water mixing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24160292A JP3289334B2 (en) | 1992-09-10 | 1992-09-10 | Hot water mixing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0695747A JPH0695747A (en) | 1994-04-08 |
| JP3289334B2 true JP3289334B2 (en) | 2002-06-04 |
Family
ID=17076763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24160292A Expired - Fee Related JP3289334B2 (en) | 1992-09-10 | 1992-09-10 | Hot water mixing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3289334B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3882192B2 (en) * | 2005-03-28 | 2007-02-14 | 東陶機器株式会社 | Hot water mixing apparatus and hot water mixing faucet provided with the same |
| DE102014105100B4 (en) * | 2014-04-10 | 2017-11-30 | Otto Egelhof Gmbh & Co. Kg | Valve, in particular regulating or shut-off valve, for liquid or gaseous media |
-
1992
- 1992-09-10 JP JP24160292A patent/JP3289334B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0695747A (en) | 1994-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU664792B2 (en) | Temperature responsive 3-way line valve with shape memory alloy actuator | |
| US5564458A (en) | Timing valve for the discontinuous metering of a volume flow | |
| JP3289334B2 (en) | Hot water mixing equipment | |
| JP3070222B2 (en) | Flow control device | |
| JP3263983B2 (en) | Hot water mixing equipment | |
| WO2007102555A1 (en) | Freezer heat exchanger coolant flow divider control device | |
| JP3321847B2 (en) | Hot water mixing equipment | |
| KR100521563B1 (en) | Controlling method for heater control apparatus of vehicle | |
| JP3289345B2 (en) | Hot water mixing equipment | |
| JP2827685B2 (en) | Hot water mixing equipment | |
| JPH0744243A (en) | Hot water and cold water mixer | |
| JP2663609B2 (en) | Hot water mixing equipment | |
| JP2820472B2 (en) | Hot water mixing equipment | |
| JPH06257772A (en) | Mixer of hot and cold water | |
| JPH07121243A (en) | Hot water/cold water mixing device | |
| JPS5837383A (en) | Flow rate contorol device | |
| JP2676788B2 (en) | Automatic pressure control valve | |
| JP2897244B2 (en) | Hot water mixing equipment | |
| JP3376631B2 (en) | Flow control valve | |
| JPS62174813A (en) | Temperature controller for supply hot water | |
| JPH07317927A (en) | Hot water supplying device | |
| JP2988061B2 (en) | Hot water mixing equipment | |
| JP3258700B2 (en) | Hot water supply temperature adjustment device of hot water supply device | |
| JP3414005B2 (en) | Water hammer prevention device for water heater | |
| JP2629947B2 (en) | Hot water mixing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |