JPH09303584A - Mixing valve device - Google Patents
Mixing valve deviceInfo
- Publication number
- JPH09303584A JPH09303584A JP15007496A JP15007496A JPH09303584A JP H09303584 A JPH09303584 A JP H09303584A JP 15007496 A JP15007496 A JP 15007496A JP 15007496 A JP15007496 A JP 15007496A JP H09303584 A JPH09303584 A JP H09303584A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- cold water
- steam
- hot water
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Multiple-Way Valves (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、蒸気と冷水を混合
室に導入して混合することにより温水を作る混合弁装置
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixing valve device for producing hot water by introducing steam and cold water into a mixing chamber and mixing them.
【０００２】[0002]
【従来の技術】この種の従来の混合弁装置は図６に示す
ような構成になっている。すなわち、装置本体１には相
対向する位置に冷水入口２と蒸気入口３とがそれぞれ開
口している。冷水入口２には、冷水配管（図示せず）を
通じて矢印Ａのように冷水が導入され、この冷水は、円
筒状弁座部材４の周面に沿って一列に配列して設けられ
た複数個の冷水流入孔７を通って混合室８内に流入する
一方、図示しない内部通路とパイロット弁とを通じて上
蓋９とその下側のダイヤフラム１０との間の感圧室２１
に流入して、後述の蒸気弁１２および冷水弁２０を駆動
するための駆動圧力として作用する。2. Description of the Related Art A conventional mixing valve device of this type is constructed as shown in FIG. That is, the cold water inlet 2 and the steam inlet 3 are opened at positions facing each other in the apparatus body 1. Cold water is introduced into the cold water inlet 2 through a cold water pipe (not shown) as shown by an arrow A. A plurality of the cold water are arranged in a line along the circumferential surface of the cylindrical valve seat member 4. While flowing into the mixing chamber 8 through the cold water inflow hole 7, the pressure sensing chamber 21 between the upper lid 9 and the diaphragm 10 therebelow through an internal passage and a pilot valve (not shown).
And acts as a driving pressure for driving the steam valve 12 and the cold water valve 20 described later.
【０００３】蒸気入口３には、蒸気配管（図示せず）を
通じて矢印Ｂのように蒸気（または高温水）が流入し、
この蒸気は、弁座部材４に設けられた蒸気導入口１１お
よび蒸気弁１２を経て混合室８内に導入され、冷水と混
合される。この蒸気と冷水とを混合して作られた温水
は、図示しない温水吐出弁（蛇口）が開かれたときに、
温水流出口１８から図示しない温水配管を通じて導出さ
れる。Steam (or high-temperature water) flows into the steam inlet 3 through a steam pipe (not shown) as shown by an arrow B,
This steam is introduced into the mixing chamber 8 through the steam inlet 11 and the steam valve 12 provided in the valve seat member 4 and mixed with cold water. The hot water made by mixing the steam and the cold water, when the hot water discharge valve (faucet) not shown is opened,
It is led out from the hot water outlet 18 through a hot water pipe (not shown).
【０００４】蒸気弁１２は、前記弁座部材４に形成され
た弁座１３と、弁体１４と、リターンスプリング１７と
を有している。図６ 、蒸気弁１２の全開状態を示して
あり、この状態からダイヤフラム１０により弁棒１９を
介し弁体１４が図の上方に移動して弁座１３に着座する
と、蒸気弁１２が全閉状態となる。The steam valve 12 has a valve seat 13 formed on the valve seat member 4, a valve body 14, and a return spring 17. FIG. 6 shows the steam valve 12 in a fully open state. When the diaphragm 10 moves the valve element 14 upward through the valve rod 19 and seats on the valve seat 13 in this state, the steam valve 12 is in a fully closed state. Becomes
【０００５】ダイヤフラム１０は、上方の感圧室２１か
ら作用する冷水の駆動圧力と下方から作用する温水の圧
力および復帰ばね３０のばね力との差が下向きの作動力
である場合に、弁棒１９を介して弁体１４を押し下げ、
逆に上向きの作動力である場合には、弁棒１９を持ち上
げるとともにリターンスプリング１７が弁体１４を上昇
させる。また、弁棒１９には放射状のステー５を介して
円筒状の冷水弁２０が取り付けられており、この冷水弁
２０は蒸気弁１２と一体的に移動して各冷水流入孔７を
開閉する。したがって、ダイヤフラム１０が弁棒１９を
押し下げたときには、蒸気弁１２が開いて蒸気流入量が
増大する。蒸気弁１２が全開に近づくと、冷水流入孔７
が冷水弁２０により開口面積が減少するよう絞られて冷
水流入量が減少し、逆に、弁棒１９が上昇したときに
は、蒸気流入量が減少し、かつ冷水流入量が増大する。The diaphragm 10 has a valve rod when the difference between the driving pressure of cold water acting from the pressure sensitive chamber 21 above, the pressure of hot water acting from below and the spring force of the return spring 30 is a downward actuating force. Depress the valve body 14 via 19,
On the contrary, when the operating force is upward, the valve rod 19 is lifted and the return spring 17 lifts the valve body 14. Further, a cylindrical cold water valve 20 is attached to the valve rod 19 via a radial stay 5, and the cold water valve 20 moves integrally with the steam valve 12 to open and close each cold water inflow hole 7. Therefore, when the diaphragm 10 pushes down the valve rod 19, the steam valve 12 opens and the amount of steam inflow increases. When the steam valve 12 approaches full opening, the cold water inflow hole 7
Is throttled by the cold water valve 20 so as to reduce the opening area, and the cold water inflow decreases, and conversely, when the valve rod 19 rises, the steam inflow decreases and the cold water inflow increases.
【０００６】一方、前記パイロット弁は、混合室８で作
られる温水の温度を常時感知して、感知した温水温度が
設定温度よりも高温になったときに、感圧室２１への冷
水の流入量を抑制する。それにより、ダイヤフラム１０
が蒸気弁１２を閉弁方向に、かつ冷水弁２０を開弁方向
にそれぞれ作動させる。逆に、設定温度よりも低温にな
ったときに、冷水の流入量を増大させて、ダイヤフラム
１０が蒸気弁１２を開弁方向に、かつ冷水弁２０を閉弁
方向にそれぞれ作動させる。すなわち、パイロット弁
は、感圧室２１に作用する冷水の駆動圧力を温水設定温
度に応じて調整し、それにより設定温度の温水が作られ
る。On the other hand, the pilot valve constantly senses the temperature of the hot water produced in the mixing chamber 8, and when the sensed hot water temperature becomes higher than the set temperature, cold water flows into the pressure sensing chamber 21. Control the amount. Thereby, the diaphragm 10
Operates the steam valve 12 in the closing direction and the cold water valve 20 in the opening direction. On the contrary, when the temperature becomes lower than the set temperature, the inflow amount of cold water is increased so that the diaphragm 10 operates the steam valve 12 in the opening direction and the cold water valve 20 in the closing direction. That is, the pilot valve adjusts the driving pressure of the cold water acting on the pressure sensitive chamber 21 according to the hot water set temperature, and thereby hot water at the set temperature is produced.
【０００７】[0007]
【発明が解決しようとする課題】ところで、前記混合弁
装置では、複数個の冷水流入孔７が弁座部材４の同一円
周面に一列環状に配置されており、この全ての冷水流入
孔７が冷水弁２０により同一タイミングで開閉される。
したがって、図５に２点鎖線で示す特性曲線のように、
蒸気弁１２が図６に示す全開状態（図５の蒸気弁変位量
ゼロ）では、各冷水流入孔７が冷水弁２０により最も絞
られている。ダイヤフラムのリフトの５０％位で蒸気弁
１２はほぼ全開状態に達している。この状態から蒸気弁
１２が閉弁方向（図６の上方）へ移動していくとき、各
冷水流入孔７の合計開口面積は、急激に増大する。この
ように各冷水流入孔７の合計開口面積が冷水弁２０の作
動により急激に変化することに起因して、以下のような
不都合が生じることがある。By the way, in the above mixing valve device, a plurality of cold water inflow holes 7 are arranged in a line in an annular shape on the same circumferential surface of the valve seat member 4, and all the cold water inflow holes 7 are provided. Are opened and closed by the cold water valve 20 at the same timing.
Therefore, like the characteristic curve shown by the two-dot chain line in FIG.
In the fully opened state of the steam valve 12 shown in FIG. 6 (zero displacement of the steam valve in FIG. 5), the cold water inflow holes 7 are most throttled by the cold water valve 20. At about 50% of the diaphragm lift, the steam valve 12 has reached the fully open state. When the steam valve 12 moves in the valve closing direction (upward in FIG. 6) from this state, the total opening area of the cold water inflow holes 7 rapidly increases. In this way, the following inconvenience may occur due to the total opening area of the cold water inflow holes 7 being rapidly changed by the operation of the cold water valve 20.
【０００８】冷水圧力が蒸気圧力に対して同等または低
い使用条件においては、蒸気弁１２の開度および冷水流
入孔７の開度調整により、蒸気流量と冷水流量の両方が
調節されて温水温度が制御される。このとき、温水吐出
弁（蛇口）を閉弁方向に絞って温水使用量を減らした場
合、混合室８内の圧力（ダイヤフラム１０の下面の圧
力）は、冷水圧力付近以下までが温水温度の制御可能範
囲となる。混合室８内の圧力を冷水圧力以下の範囲で上
昇させた場合、ダイヤフラム１０の上下面の差圧は、温
水温度を設定値に保持するためのパイロット弁の作用に
より、一定になるように制御される。これにより、ダイ
ヤフラム上面の駆動圧力が上昇して冷水圧力に近づき、
パイロット弁前後の冷水の差圧が減少するため、パイロ
ット弁よりダイヤフラム１０上面の感圧室２１への冷水
供給量が低下し、ダイヤフラム１０が押し上げられる。
この状態においては、蒸気弁１２は閉弁方向に移動し、
かつ冷水弁も蒸気弁１２と一体に移動する。このとき
の、蒸気弁１２の開度および冷水流入孔７の開度によ
り、蒸気流量および冷水流量を調節し、温水温度が制御
される。Under operating conditions in which the cold water pressure is equal to or lower than the steam pressure, both the steam flow rate and the cold water flow rate are adjusted by adjusting the opening degree of the steam valve 12 and the cold water inflow hole 7 to maintain the hot water temperature. Controlled. At this time, when the amount of hot water used is reduced by squeezing the hot water discharge valve (faucet) in the valve closing direction, the pressure in the mixing chamber 8 (the pressure on the lower surface of the diaphragm 10) is not higher than near the cold water pressure and the hot water temperature is controlled. It becomes possible range. When the pressure in the mixing chamber 8 is increased within the range of the cold water pressure or lower, the differential pressure between the upper and lower surfaces of the diaphragm 10 is controlled to be constant by the action of the pilot valve for keeping the hot water temperature at the set value. To be done. As a result, the driving pressure on the upper surface of the diaphragm rises and approaches the cold water pressure,
Since the differential pressure of cold water before and after the pilot valve is reduced, the amount of cold water supplied from the pilot valve to the pressure sensing chamber 21 on the upper surface of the diaphragm 10 is reduced, and the diaphragm 10 is pushed up.
In this state, the steam valve 12 moves in the valve closing direction,
Moreover, the cold water valve also moves integrally with the steam valve 12. The hot water temperature is controlled by adjusting the steam flow rate and the cold water flow rate by the opening degree of the steam valve 12 and the opening degree of the cold water inflow hole 7 at this time.
【０００９】冷水圧力が蒸気圧力よりもかなり高い使用
条件において、混合室８に流入する冷水量を絞って必要
温度を確保するよう、蒸気弁１２は図６に示す全開状態
または全開ストローク以上に開いた状態になるととも
に、冷水弁２０は最も開度の低い状態またはそれに近い
状態になり、図５の横軸の冷水弁の変位量が小さい範囲
内において作動する。このとき、図６の蒸気弁１２は上
記した全開状態付近にあるので、その作動に対し蒸気流
入量がほとんど変化しない。したがって、温水の温度制
御は主に冷水の流入量調整のみで行われることになる。
しかし、このときの蒸気弁１２の上下動により、各冷水
流入孔７の合計開口面積が図５の二点鎖線で示したよう
に急激に変化して冷水流入量が大きく変動するから、温
水温度も激しく変動してハンチングを起こす問題があ
る。Under the operating conditions where the cold water pressure is considerably higher than the steam pressure, the steam valve 12 is opened to the fully open state shown in FIG. 6 or more than the fully open stroke so as to secure the required temperature by reducing the amount of the cold water flowing into the mixing chamber 8. When the cold water valve 20 is brought into the open state, the cold water valve 20 is brought into a state where the opening degree is the lowest or a state close thereto, and operates in a range where the displacement amount of the cold water valve on the horizontal axis of FIG. 5 is small. At this time, since the steam valve 12 in FIG. 6 is in the vicinity of the fully opened state, the steam inflow amount hardly changes with the operation. Therefore, the temperature control of hot water is mainly performed only by adjusting the inflow amount of cold water.
However, due to the vertical movement of the steam valve 12 at this time, the total opening area of each cold water inflow hole 7 changes abruptly as shown by the chain double-dashed line in FIG. However, there is a problem that it fluctuates drastically and causes hunting.
【００１０】冷水圧力が蒸気圧力よりもかなり高い使用
条件において、温水吐出弁（蛇口）を閉弁方向に絞って
温水使用量を減らした場合、混合室８内の圧力（ダイヤ
フラム１０下面の圧力）は蒸気圧力付近以下までが温水
温度の制御可能範囲となる。蛇口を絞ると温水量が減少
し、混合室８内の圧力も上昇する。このとき、前述のと
おり、蒸気弁１２の開度が全開ストロークまたはそれ以
上に達しているので、弁体１４の変位によって弁座１３
の通過面積は変化しないため、蒸気流量は蒸気弁１２前
後の差圧が減少することにより減少する。蒸気量の減少
に比べて、混合室８の圧力上昇による冷水量の変化は、
冷水圧力が十分大きいために、冷水圧力と混合室内の圧
力の差圧が充分大きいので、減少が比率的少ない。その
ため、温水温度が低下しようとするので、温度を維持さ
せるために、更に冷水弁２０を押し下げる方向（絞る方
向）に、パイロット弁が感圧室２１への冷水供給量を制
御して、駆動圧力を制御する。この冷水弁２０の下方へ
の変位により、各冷水流入孔７の合計開口面積が急激に
小さくなり、冷水の混合室８への流入量が急激に減少す
るので、温水の温度が上昇し過ぎてしまう。When the amount of hot water used is reduced by squeezing the hot water discharge valve (faucet) in the valve closing direction under the operating conditions where the cold water pressure is considerably higher than the steam pressure, the pressure in the mixing chamber 8 (the pressure on the lower surface of the diaphragm 10). Is within the controllable range of hot water temperature up to around steam pressure. When the faucet is squeezed, the amount of warm water decreases and the pressure in the mixing chamber 8 also rises. At this time, as described above, since the opening degree of the steam valve 12 has reached the full opening stroke or more, the valve seat 14 is displaced by the displacement of the valve body 14.
Since the passage area of the steam valve does not change, the steam flow rate decreases due to the decrease in the differential pressure across the steam valve 12. Compared with the decrease in the amount of steam, the change in the amount of cold water due to the increase in pressure in the mixing chamber 8
Since the chilled water pressure is sufficiently large, the difference between the chilled water pressure and the pressure in the mixing chamber is sufficiently large, so that the decrease is relatively small. Therefore, the temperature of the hot water tends to decrease. Therefore, in order to maintain the temperature, the pilot valve controls the amount of cold water supplied to the pressure-sensitive chamber 21 in the direction of further pressing down (closing direction) the cold water valve 20, and the driving pressure is reduced. To control. Due to the downward displacement of the cold water valve 20, the total opening area of the cold water inflow holes 7 is drastically reduced and the inflow amount of the cold water into the mixing chamber 8 is drastically reduced, so that the temperature of the hot water rises too much. I will end up.
【００１１】この温水温度の上昇を感知したパイロット
弁の作用により、感圧室２１への冷水の流入量が減少
し、この冷水の駆動圧力の減少によりダイヤフラム１０
が押し上げられて、蒸気弁１２が閉弁方向に移動する。
このとき、冷水弁２０の上昇により冷水の流入量が急激
に増大するので、今度は混合室８内の温度が低下し過ぎ
てしまう。以上の動作の繰り返しにより、温水温度が激
しく変動してハンチングを起こし、設定温度の温水を得
ることができない。Due to the action of the pilot valve that senses the rise in the temperature of the hot water, the amount of cold water flowing into the pressure sensing chamber 21 is reduced, and the drive pressure of the cold water is reduced, so that the diaphragm 10 is reduced.
Is pushed up, and the steam valve 12 moves in the valve closing direction.
At this time, the inflow amount of the cold water rapidly increases due to the rise of the cold water valve 20, so that the temperature in the mixing chamber 8 becomes too low this time. By repeating the above operation, the hot water temperature fluctuates drastically and hunting occurs, and hot water at the set temperature cannot be obtained.
【００１２】そこで本発明は、冷水圧力が蒸気圧力より
もかなり高い場合においても温水温度の急激な変動を防
止して、設定温度の温水を安定して得られる混合弁装置
を提供することを目的としている。Therefore, the present invention aims to provide a mixing valve device capable of stably obtaining hot water at a set temperature by preventing a rapid change in hot water temperature even when the cold water pressure is considerably higher than the steam pressure. I am trying.
【００１３】[0013]
【課題を解決するための手段】上記目的を達成するため
に、本発明の混合弁装置は、蒸気が流入する蒸気入口
と、冷水が流入する冷水入口と、前記蒸気と冷水を混合
して温水を作る混合室と、その温水が流出する温水流出
口と、前記混合室へ冷水を導入する複数の冷水流入孔
と、前記蒸気入口から混合室への蒸気導入量を調節する
蒸気弁と、前記蒸気弁に連結されて蒸気弁と一体的に移
動し、前記冷水流入孔の開度を調節する冷水弁と、前記
蒸気弁および冷水弁を駆動する冷水の駆動圧力を温水設
定温度に応じて調整するパイロット弁と、前記駆動圧力
と前記温水の圧力との差に応じて前記蒸気弁を駆動する
蒸気弁駆動部材とを備えており、前記複数の冷水孔は、
前記冷水弁の移動方向に沿って位置ずれした複数の設定
位置に配置されている。In order to achieve the above object, a mixing valve device of the present invention comprises a steam inlet into which steam flows, a cold water inlet into which cold water flows, and hot water obtained by mixing the steam and cold water. , A hot water outlet for hot water to flow out, a plurality of cold water inflow holes for introducing cold water into the mixing chamber, a steam valve for adjusting the amount of steam introduced into the mixing chamber from the steam inlet, A cold water valve that is connected to a steam valve and moves integrally with the steam valve to adjust the opening degree of the cold water inflow hole, and a driving pressure of cold water that drives the steam valve and the cold water valve are adjusted according to a hot water set temperature. A pilot valve, and a steam valve driving member that drives the steam valve according to a difference between the driving pressure and the pressure of the hot water, the plurality of cold water holes,
The cold water valves are arranged at a plurality of set positions that are displaced in the moving direction.
【００１４】この混合弁装置によれば、冷水圧力が蒸気
圧力よりもかなり高く、蒸気弁が全開または全開ストロ
ーク以上に開いた状態において、温水流出口からの温水
の流出量が少量になるよう操作された場合、従来と同様
に、混合室内の圧力が高くなって蒸気弁駆動部材が蒸気
弁を開弁方向に作動させ、この蒸気弁と一体的に移動す
る冷水弁が冷水流入孔の開口面積を小さくする方向に変
位する。ここで、本発明では、冷水流入孔が冷水弁の移
動方向に沿って位置ずれした複数の位置に配置されてい
るので、各冷水流入孔は、複数組に分けてその開度を順
次調節されることになる。したがって、各冷水流入孔の
合計開口面積は、従来装置のように急激に減少せず、徐
々に小さくなっていく。それにより、冷水の流入量も徐
々に減少していくので、温水の温度が上昇し過ぎる以前
に、パイロット弁の作用により冷水の駆動圧力が調整さ
れる。そのため、混合室内の温水温度が急激に変動する
ことがなく、従来装置において発生していたハンチング
を確実に防止できる。According to this mixing valve device, the cold water pressure is considerably higher than the steam pressure, and when the steam valve is fully opened or opened more than the full opening stroke, the amount of hot water flowing out from the hot water outlet is small. In this case, as in the conventional case, the pressure inside the mixing chamber rises and the steam valve driving member operates the steam valve in the opening direction, and the cold water valve that moves integrally with this steam valve opens the opening area of the cold water inflow hole. Is displaced in the direction of decreasing. Here, in the present invention, since the cold water inflow holes are arranged at a plurality of positions displaced along the movement direction of the cold water valve, each cold water inflow hole is divided into a plurality of groups and the opening thereof is sequentially adjusted. Will be. Therefore, the total opening area of each cold water inflow hole does not decrease sharply as in the conventional device but gradually decreases. As a result, the inflow amount of cold water gradually decreases, so that the driving pressure of the cold water is adjusted by the action of the pilot valve before the temperature of the hot water rises too much. Therefore, the hot water temperature in the mixing chamber does not fluctuate abruptly, and hunting that has occurred in the conventional device can be reliably prevented.
【００１５】[0015]
【発明の実施の形態】以下、本発明の実施形態を図面に
基づいて説明する。図１および図２は本発明の一実施形
態に係る混合弁装置を示す縦断面図で、図１は蒸気弁１
２の全閉状態、図２は蒸気弁１２の全開状態をそれぞれ
示す。これらの図において、図６と同一もしくは同等の
ものには同一の符号を付してその説明を省略する。Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are vertical sectional views showing a mixing valve device according to an embodiment of the present invention. FIG.
2 shows the fully closed state, and FIG. 2 shows the steam valve 12 in the fully opened state. In these figures, the same or equivalent parts as those in FIG. 6 are designated by the same reference numerals and the description thereof will be omitted.
【００１６】図６と相違する構成は、弁座部材２２を図
４（ａ）に示す形状としたことにある。この弁座部材２
２は、下方から一段目の冷水流入孔２３と２段目の冷水
流入孔２４との２組に分けるとともに、これら冷水流入
孔２３，２４を冷水弁２０の駆動方向に沿って位置ずれ
した二つの設定周面に配設されている。ここで、２組の
各冷水流入孔２３，２４はいずれも同一径であって、図
の下方の一段目の冷水流入孔２３は二段目の冷水流入孔
２４よりも少ない数に設定されている。たとえば、一段
目の冷水流入孔２３が２個で、二段目の冷水流入孔２４
は８個形成されている。前記弁座部材２２は、上述のよ
うに、径方向に相対向した側面箇所に設けられた二つの
蒸気導入口１１と蒸気導入口１１の上面を形成する弁座
１３とを備えている他に、蒸気弁１２の弁体１４を摺動
させる蒸気弁保持部２７、弁座部材２２を装置本体１に
固定するためのねじ部２８、冷水弁２０を摺動させるた
めの冷水弁摺動部２９が設けられている。The configuration different from FIG. 6 is that the valve seat member 22 has the shape shown in FIG. 4 (a). This valve seat member 2
2 is divided into two sets, a first stage cold water inflow hole 23 and a second stage cold water inflow hole 24, and these cold water inflow holes 23, 24 are displaced along the driving direction of the cold water valve 20. They are arranged on one set peripheral surface. Here, each of the two sets of cold water inflow holes 23 and 24 has the same diameter, and the number of the cold water inflow holes 23 in the first stage in the lower part of the figure is set to be smaller than that in the second stage. There is. For example, there are two first-stage cold water inflow holes 23 and second-stage cold water inflow holes 24.
8 are formed. As described above, the valve seat member 22 is provided with the two steam introducing ports 11 provided at the side surfaces facing each other in the radial direction and the valve seat 13 forming the upper surface of the steam introducing port 11 as well. A steam valve holding portion 27 for sliding the valve body 14 of the steam valve 12, a screw portion 28 for fixing the valve seat member 22 to the apparatus body 1, and a cold water valve sliding portion 29 for sliding the cold water valve 20. Is provided.
【００１７】図１の感圧室２１内の冷水の駆動圧力と吐
出圧力（温水圧力）との差に応じて弁棒１９を介して蒸
気弁１２を駆動するダイヤフラム（蒸気弁駆動部材）１
０は、その周縁部を上蓋９と装置本体１の上端部とで挟
持固定されているとともに、復帰用スプリング３０によ
り上方へ付勢されている。A diaphragm (steam valve driving member) 1 for driving the steam valve 12 via the valve rod 19 according to the difference between the driving pressure of cold water and the discharge pressure (hot water pressure) in the pressure sensitive chamber 21 of FIG.
0 has its peripheral portion sandwiched and fixed by the upper lid 9 and the upper end portion of the apparatus main body 1, and is urged upward by the return spring 30.
【００１８】感圧室２１に作用する冷水の駆動圧力は、
パイロット弁３１により、設定温水温度に応じて調節さ
れる。図１の冷水入口２からの冷水は、スクリーン（図
示せず）で塵埃を除去されたのちに、図３に示すよう
に、パイロット用の第１ないし第３通路３２ａ，３２
ｂ，３２ｃを通じてパイロット弁３１内に導入される。
第３通路３２ｃの奥部では、ボールからなる弁体３３が
ばね３４により弁座３７の方向に付勢されて、固定スリ
ーブ３８内に挿通された感温制御ロッド３９の先端ピン
４０に押し付けられている。弁体３３と弁座３７との隙
間により形成された冷水通路４１は、調温ハンドル４２
の回転操作により、これに固定され、かつ固定スリーブ
３８にねじ部３６で螺合されたアジャスト部材３５を回
転させ、このアジャスト部材３５とともに弁座３７を矢
印Ｘ−Ｙ方向に移動させることにより、前記隙間で形成
された冷水通路４１の通路面積を調節できるようになっ
ており、それにより温水の温度を所望に設定できる。The driving pressure of cold water acting on the pressure sensitive chamber 21 is
It is adjusted by the pilot valve 31 according to the set hot water temperature. As shown in FIG. 3, the cold water from the cold water inlet 2 shown in FIG. 1 has its dust removed by a screen (not shown), and then, as shown in FIG.
It is introduced into the pilot valve 31 through b and 32c.
In the inner part of the third passage 32c, the valve element 33 made of a ball is urged toward the valve seat 37 by the spring 34 and pressed against the tip pin 40 of the temperature-sensitive control rod 39 inserted into the fixed sleeve 38. ing. The cold water passage 41 formed by the gap between the valve body 33 and the valve seat 37 has a temperature adjusting handle 42.
By rotating the adjusting member 35 fixed to the fixing sleeve 38 and screwed to the fixing sleeve 38 by the screw portion 36, the valve seat 37 is moved in the arrow XY direction together with the adjusting member 35. The passage area of the cold water passage 41 formed in the gap can be adjusted, whereby the temperature of the hot water can be set as desired.
【００１９】弁座３７の右側の空間から固定スリーブ３
８を貫通した連通路４３が図１の感圧室２１に連通して
おり、図３の第１ないし第３通路３２ａ，３２ｂ，３２
ｃを通じて流入した冷水が冷水通路４１および連通路４
３を通って感圧室２１内に流入する。一方、図１の感温
室２１内の冷水は、ダイヤフラム１０が押し上げられる
ときに、図３の逆止弁５３を押し開いて冷水入口２側に
戻される。また、固定スリーブ３８における図３の右側
の内部空間４７が、固定スリーブ３８の周壁に開口した
通孔４４を通じて、図１の温水流出口１８に連通してい
る。From the space on the right side of the valve seat 37, the fixing sleeve 3
8 communicates with the pressure-sensitive chamber 21 of FIG. 1, and the first to third passages 32a, 32b, 32 of FIG.
The cold water that has flowed in through c is the cold water passage 41 and the communication passage 4
It flows through 3 into the pressure sensitive chamber 21. On the other hand, the cold water in the greenhouse 21 of FIG. 1 is returned to the cold water inlet 2 side by pushing open the check valve 53 of FIG. 3 when the diaphragm 10 is pushed up. Further, the inner space 47 on the right side of FIG. 3 in the fixed sleeve 38 communicates with the hot water outlet 18 of FIG. 1 through the through hole 44 opened in the peripheral wall of the fixed sleeve 38.
【００２０】図３の感温制御ロッド３９の外周には、上
記の内部空間４７に位置して環状のバイメタル４８が配
列され、かつロッド３９がばね４９によりＹ方向に付勢
されて、自動調温機構が構成されている。すなわち、バ
イメタル４８は、高膨張合金層と低膨張合金層とを貼り
合わしたものを１組として、複数組が軸方向に沿って配
置されており、内部空間４７に流入する温水の温度を常
時感知している。バイメタル４８は、高温を感知したと
きに図示の皿ばね状となり、かつ低温のときに平板状と
なり、その変形に伴う力がロッド３９に作用する。On the outer periphery of the temperature-sensitive control rod 39 shown in FIG. 3, an annular bimetal 48 is arranged in the internal space 47, and the rod 39 is biased in the Y direction by a spring 49 for automatic adjustment. A temperature mechanism is configured. That is, the bimetals 48 are arranged along the axial direction, with one set consisting of a high-expansion alloy layer and a low-expansion alloy layer bonded to each other, and the temperature of the hot water flowing into the internal space 47 is constantly maintained. I'm sensing. The bimetal 48 has a disc spring shape as shown when sensing a high temperature, and has a flat plate shape at a low temperature, and a force associated with the deformation thereof acts on the rod 39.
【００２１】パイロット弁３１の弁体３３は、前記バイ
メタル４８の変形に連動して軸方向Ｘ−Ｙに移動する感
温制御ロッド３９により、ばね３４の付勢力に抗して軸
方向Ｘ−Ｙに移動される。これによって、弁体３３と弁
座３７との隙間からなる冷水通路４１の大きさが調整さ
れて、感圧室２１に入る冷水の圧力、つまり駆動圧力が
温水流出口１８の温水温度に応じて調節される。それに
応じて蒸気弁および冷水弁２０の作動が制御されて、温
水が設定温度に保持される。The valve body 33 of the pilot valve 31 moves in the axial direction X-Y in association with the deformation of the bimetal 48, so that the temperature sensitive control rod 39 resists the urging force of the spring 34 and the axial direction X-Y. Be moved to. As a result, the size of the cold water passage 41 formed by the gap between the valve element 33 and the valve seat 37 is adjusted so that the pressure of the cold water entering the pressure sensitive chamber 21, that is, the driving pressure, depends on the hot water temperature of the hot water outlet 18. Adjusted. Accordingly, the operations of the steam valve and the cold water valve 20 are controlled, and the hot water is maintained at the set temperature.
【００２２】なお、固定スリーブ３８の端部にはガイド
ケース５１が螺合され、このガイドケース５１が感温制
御ロッド３９における温水流出口１８に臨む後端部３９
ａを通孔５２を介して進退自在に支持している。A guide case 51 is screwed onto the end of the fixed sleeve 38, and the guide case 51 faces the hot water outlet 18 of the temperature sensitive control rod 39.
a is supported movably back and forth through the through hole 52.
【００２３】つぎに、上記混合弁装置の作動について説
明する。温水吐出弁（蛇口）が温水使用のために開けら
れると、図１の混合室８の圧力が低下する。一方、冷水
入口２から図３のパイロット弁３１に導入された冷水
が、冷水通路４１から連通路４３を通って感圧室２１内
に流入している。この感圧室２１内の冷水の圧力、つま
り駆動圧力が、復帰ばね３０のばね力と混合室８の圧力
との合計よりも大きくなると、ダイヤフラム１０が下動
して蒸気弁１２が開かれる。これにより、蒸気が蒸気導
入口１１から混合室８内に流入するとともに、冷水弁２
０が下動して上方の二段目の冷水流入孔２４を徐々に塞
いでその開口面積を小さくしていくので、冷水の混合室
８への流入量が減少していく。この蒸気と冷水とが混合
室８で混合して作られた温水が、温水流出口１８から温
水配管へ取り出される。Next, the operation of the mixing valve device will be described. When the hot water discharge valve (faucet) is opened for hot water use, the pressure in the mixing chamber 8 of FIG. 1 drops. On the other hand, the cold water introduced from the cold water inlet 2 to the pilot valve 31 of FIG. 3 flows into the pressure sensitive chamber 21 from the cold water passage 41 through the communication passage 43. When the pressure of the cold water in the pressure sensitive chamber 21, that is, the driving pressure becomes larger than the sum of the spring force of the return spring 30 and the pressure of the mixing chamber 8, the diaphragm 10 moves downward and the steam valve 12 opens. As a result, steam flows into the mixing chamber 8 from the steam inlet 11 and the cold water valve 2
Since 0 moves downward and gradually closes the upper second-stage cold water inflow hole 24 to reduce the opening area, the inflow amount of cold water into the mixing chamber 8 decreases. The hot water produced by mixing the steam and the cold water in the mixing chamber 8 is taken out from the hot water outlet 18 to the hot water pipe.
【００２４】この温水の温度は、通孔４４を通じてバイ
メタル４８が常時感知しており、調温ハンドル４２によ
り設定された設定温度よりも高温になると、バイメタル
４８が図３に図示した軸方向の幅が大きくなる形状に変
形して感温制御ロッド３９を図３のＸ方向に移動させ
る。これにより、弁体３３で調整される冷水通路４１が
狭くなって図１の感温室２１内への冷水の流入を抑制
し、蒸気弁１２の開度を絞るようにして蒸気の混合室８
への流入量を減少させ、温水の温度を低下させる。つぎ
に、温水吐出弁を閉じて温水の吐出を止めると、混合室
８内の圧力が高くなる。ここで、冷水圧力が蒸気圧力に
対して同等または低い場合、混合室８の圧力上昇によっ
てダイヤフラム１０は押し上げられ、蒸気弁１２が閉弁
方向に作動する。The temperature of the hot water is constantly sensed by the bimetal 48 through the through hole 44, and when the temperature becomes higher than the set temperature set by the temperature adjusting handle 42, the bimetal 48 has the axial width shown in FIG. The temperature sensitive control rod 39 is moved in the X direction of FIG. As a result, the cold water passage 41 adjusted by the valve element 33 is narrowed to suppress the inflow of cold water into the greenhouse 21 of FIG. 1, and the opening degree of the steam valve 12 is narrowed so that the steam mixing chamber 8
It reduces the inflow to the water and lowers the temperature of the hot water. Next, when the hot water discharge valve is closed to stop the discharge of hot water, the pressure in the mixing chamber 8 increases. Here, when the cold water pressure is equal to or lower than the steam pressure, the diaphragm 10 is pushed up by the pressure increase in the mixing chamber 8, and the steam valve 12 operates in the valve closing direction.
【００２５】ところで、上記混合弁装置では、図２に示
すように、蒸気弁１２が最下点に位置しているときに、
冷水弁２０が下方の一段目の冷水流入口２３をほぼ半分
塞ぐように設定されており、この状態から蒸気弁１２お
よび冷水弁２０が上昇し始めると、冷水弁２０が、ま
ず、一段目の各冷水流入孔２３を完全に開口させたのち
に、二段目の各冷水流入孔２４を徐々に開口していく。
したがって、上記混合弁装置における冷水弁２０の最下
点からの変位量（上昇量）に対する冷水流入孔２３，２
４の合計開口面積の変化は、図５に実線で示す特性曲線
のように、緩やかな上昇曲線を描く。By the way, in the above mixing valve device, as shown in FIG. 2, when the steam valve 12 is located at the lowest point,
The chilled water valve 20 is set so as to close the chilled water inlet 23 of the lower first stage almost half, and when the steam valve 12 and the chilled water valve 20 start to rise from this state, the chilled water valve 20 first After each cold water inflow hole 23 is completely opened, each second cold water inflow hole 24 is gradually opened.
Therefore, the cold water inflow holes 23, 2 with respect to the displacement amount (rise amount) from the lowest point of the cold water valve 20 in the above mixing valve device.
The change of the total opening area of 4 draws a gentle rising curve like the characteristic curve shown by the solid line in FIG.
【００２６】すなわち、冷水弁２０が蒸気弁１２の最下
点から上方に向かい僅かに変位する範囲では、冷水弁２
０が一段目の冷水流入孔２３を完全に開口させたのちに
二段目の冷水流入孔２４を僅かに開口させるだけである
ので、流水流入孔２３，２４の合計開口面積は、従来装
置のように急激に増大せずに、徐々に大きくなってい
く。That is, in the range in which the cold water valve 20 is slightly displaced upward from the lowest point of the steam valve 12, the cold water valve 2
Since 0 completely opens the cold water inflow hole 23 of the first stage and then slightly opens the cold water inflow hole 24 of the second stage, the total opening area of the running water inflow holes 23, 24 is the same as that of the conventional device. It does not increase suddenly, but gradually increases.
【００２７】いま、冷水圧力が蒸気圧力よりもかなり高
い場合、混合室８に流入する冷水量と蒸気量とのバラン
スを保つために、蒸気弁１２が図２に示すように全開ス
トロークまたは全開ストローク以上に開いた状態にな
り、冷水流入孔７は最も開度の低い状態となる。この状
態では、蒸気弁１２が全開状態から僅かに上動しても蒸
気流入量は殆ど変化しないので、温水の温度は、冷水弁
２０の僅かな作動による冷水の流入量の変動のみにより
制御される。ここで、温水吐出弁が絞られて温水流出口
１８からの温水の流出量が減少した場合、混合室８内の
圧力が高くなり、従来装置について説明したように、ダ
イヤフラム１０が押し下げられ、それに伴って蒸気弁１
２が開弁方向に駆動され、かつ冷水弁２０が冷水流入孔
２３，２４の合計開口面積を小さくする方向に変位して
いく。Now, when the cold water pressure is considerably higher than the steam pressure, the steam valve 12 has a fully open stroke or a fully open stroke as shown in FIG. 2 in order to maintain the balance between the amount of cold water flowing into the mixing chamber 8 and the amount of steam. The above state is opened, and the cold water inflow hole 7 is in the state with the lowest opening. In this state, the steam inflow amount hardly changes even if the steam valve 12 moves slightly upward from the fully opened state, so the temperature of the hot water is controlled only by the fluctuation of the cold water inflow amount due to a slight operation of the cold water valve 20. It Here, when the hot water discharge valve is throttled and the outflow amount of the hot water from the hot water outlet 18 decreases, the pressure in the mixing chamber 8 becomes high, and the diaphragm 10 is pushed down as described in the conventional device, and Along with the steam valve 1
2 is driven in the valve opening direction, and the cold water valve 20 is displaced in the direction of decreasing the total opening area of the cold water inflow holes 23, 24.
【００２８】このとき、冷水流入孔２３，２４の合計開
口面積は、上述のように徐々に小さくなっていくので、
冷水の流入量も徐々に減少するだけであり、温水の温度
が従来装置のように急激に上昇しない。したがって、温
水の温度をバイメタル４８により感知しているパイロッ
ト弁３１は、感圧室２１への冷水量を急激に減らすよう
に作用せず、温水の温度が設定温度になるよう冷水の駆
動圧力を徐々に調整する。このように、冷水弁２０の作
動に対し冷水流入量が急激に変動しないことから、混合
室８内の温水の温度も急激に変動するようなことがない
ため、従来装置において発生していたハンチングを確実
に防止して、設定温度の温水を得ることができる。At this time, the total opening area of the cold water inflow holes 23 and 24 gradually decreases as described above.
The inflow of cold water only gradually decreases, and the temperature of hot water does not rise sharply as in conventional devices. Therefore, the pilot valve 31, which senses the temperature of the hot water with the bimetal 48, does not act to sharply reduce the amount of cold water to the pressure sensing chamber 21, and the driving pressure of the cold water is adjusted so that the temperature of the hot water reaches the set temperature. Adjust gradually. As described above, since the cold water inflow amount does not fluctuate abruptly with respect to the operation of the cold water valve 20, the temperature of the hot water in the mixing chamber 8 does not fluctuate abruptly. Can be reliably prevented and hot water at the set temperature can be obtained.
【００２９】なお、一段目の冷水流入孔２３と二段目の
冷水孔２４とは、異なる径に形成してもよく、また、冷
水弁２０の駆動方向において一部重なる高さ位置に形成
してもよい。さらに、上下方向に沿って二段に配置する
他に、図４（ｂ）に示すように、上下方向に沿って位置
ずれした三つの設定周面に、一段目、二段目および三段
目の冷水流入孔２３，２４，２５を形成するようにして
もよい。この場合の特性曲線は、図５の１点鎖線で示す
ようになる。The cold water inflow hole 23 of the first stage and the cold water hole 24 of the second stage may be formed to have different diameters, or they are formed at a height position where they partially overlap in the driving direction of the cold water valve 20. May be. Further, as shown in FIG. 4B, in addition to arranging in two stages along the vertical direction, the first stage, the second stage, and the third stage are provided on three set peripheral surfaces that are displaced in the vertical direction. The cold water inflow holes 23, 24, 25 may be formed. The characteristic curve in this case is as shown by the one-dot chain line in FIG.
【００３０】[0030]
【発明の効果】以上のように、本発明によれば、複数の
冷水流入孔を冷水弁の駆動方向に沿って位置ずれした複
数の設定位置に配置するようにしたので、蒸気弁が最大
開度の状態から僅かに変位する範囲内で作動して温水温
度の制御を行う状態において、冷水流入孔の合計開口面
積は、位置ずれした各組の冷水流入孔が冷水弁によって
順次開口されていくことから、急激に増大することがな
い。そのため、冷水の流量が急激に変動せず、それに伴
って混合室内の温水の温度も急激な変動をしないので、
従来装置において発生していたハンチングを完全に防止
して、温水を設定温度になるよう速やかに制御できる。As described above, according to the present invention, since the plurality of cold water inflow holes are arranged at the plurality of set positions displaced in the driving direction of the cold water valve, the steam valve is opened to the maximum. In the state where the temperature of the hot water is controlled by operating within a range slightly displaced from the state of the degree of cold water, the total opening area of the cold water inflow holes is such that the misaligned cold water inflow holes of each set are sequentially opened by the cold water valve. Therefore, it does not increase sharply. Therefore, the flow rate of cold water does not fluctuate rapidly, and the temperature of hot water in the mixing chamber does not fluctuate accordingly,
It is possible to completely prevent the hunting that has occurred in the conventional device and quickly control the hot water to the set temperature.
【図１】本発明の一実施形態に係る混合弁装置の蒸気弁
の全閉状態を示す縦断面図である。FIG. 1 is a vertical cross-sectional view showing a fully closed state of a steam valve of a mixing valve device according to an embodiment of the present invention.
【図２】同上装置の蒸気弁の全開状態を示す縦断面図で
ある。FIG. 2 is a vertical sectional view showing a fully open state of a steam valve of the same apparatus.
【図３】同上装置におけるパイロット弁を示す縦断面図
である。FIG. 3 is a vertical sectional view showing a pilot valve in the same apparatus.
【図４】（ａ）は同上装置における弁座部材を示す正面
図、（ｂ）は弁座部材の変形例を示す正面図である。FIG. 4 (a) is a front view showing a valve seat member in the same apparatus, and FIG. 4 (b) is a front view showing a modified example of the valve seat member.
【図５】同上装置および従来装置の蒸気弁および冷水弁
の最下点からの変位量に対する冷水流入孔の合計開口面
積を示す特性図である。FIG. 5 is a characteristic diagram showing a total opening area of cold water inflow holes with respect to a displacement amount from a lowest point of a steam valve and a cold water valve of the same apparatus and a conventional apparatus.
【図６】従来装置の縦断面図である。FIG. 6 is a vertical cross-sectional view of a conventional device.
２…蒸気入口、３…冷水入口、８…混合室、１０…ダイ
ヤフラム（蒸気弁駆動部材）、１１…蒸気の導入口、１
２…蒸気弁、１３…弁座、１４…弁体、１８…温水流出
口、２０…冷水弁、２３，２４，２５…冷水流入孔、３
１…パイロット弁。2 ... Steam inlet, 3 ... Cold water inlet, 8 ... Mixing chamber, 10 ... Diaphragm (steam valve driving member), 11 ... Steam inlet, 1
2 ... Steam valve, 13 ... Valve seat, 14 ... Valve body, 18 ... Hot water outlet, 20 ... Cold water valve, 23, 24, 25 ... Cold water inlet hole, 3
1 ... Pilot valve.
Claims (1)
弁と、 前記蒸気弁に連結されて蒸気弁と一体的に移動し、前記
冷水流入孔の開度を調整する冷水弁と、 前記蒸気弁および冷水弁を駆動する冷水の駆動圧力を温
水設定温度に応じて調整するパイロット弁と、 前記駆動圧力と前記温水の圧力との差に応じて前記蒸気
弁を駆動する蒸気弁駆動部材とを備え、 前記複数の冷水流入孔は、前記冷水弁の移動方向に沿っ
て位置ずれした複数の設定位置に配置されている混合弁
装置。1. A steam inlet into which steam flows, a cold water inlet into which cold water flows, a mixing chamber that mixes the steam and cold water to produce hot water, a hot water outlet from which the hot water flows out, and the mixing chamber to the mixing chamber. A plurality of cold water inflow holes for introducing cold water, a steam valve for adjusting the amount of steam introduced from the steam inlet to the mixing chamber, and a steam valve connected to the steam valve to move integrally with the steam valve, A cold water valve that adjusts the opening degree, a pilot valve that adjusts the driving pressure of the cold water that drives the steam valve and the cold water valve according to the hot water set temperature, and the pilot valve that adjusts the driving pressure and the pressure of the hot water according to the difference A mixing valve device, comprising: a steam valve driving member that drives a steam valve, wherein the plurality of cold water inflow holes are arranged at a plurality of set positions that are displaced along a moving direction of the cold water valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15007496A JPH09303584A (en) | 1996-05-20 | 1996-05-20 | Mixing valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15007496A JPH09303584A (en) | 1996-05-20 | 1996-05-20 | Mixing valve device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09303584A true JPH09303584A (en) | 1997-11-25 |
Family
ID=15488959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15007496A Pending JPH09303584A (en) | 1996-05-20 | 1996-05-20 | Mixing valve device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09303584A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765439A (en) * | 2016-12-21 | 2017-05-31 | 浙江森册智能科技有限公司 | A kind of integrated heating system of intelligent water mixing |
-
1996
- 1996-05-20 JP JP15007496A patent/JPH09303584A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765439A (en) * | 2016-12-21 | 2017-05-31 | 浙江森册智能科技有限公司 | A kind of integrated heating system of intelligent water mixing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9625920B2 (en) | Mixing valve | |
| US5148976A (en) | Thermostatic mixing valve | |
| JPS6192378A (en) | Valve | |
| KR20020061600A (en) | Slow opening gas valve | |
| EP1054152A2 (en) | Electrically controlled valve having mechanism for controlling a nonlinear force | |
| US5971012A (en) | Constant flow control valve having matable piston sleeve and outlet cover | |
| US8746582B2 (en) | Hot and cold water mixing valve | |
| US6895995B2 (en) | Liquid flow regulator | |
| EP0448315A2 (en) | Improved thermostatic mixing valve | |
| JPH09303584A (en) | Mixing valve device | |
| US3036778A (en) | Pressure regulator for diaphragm gas valves | |
| JP4087522B2 (en) | Mixing valve device | |
| JPH0794958B2 (en) | Temperature control device for heat exchanger | |
| US20020074418A1 (en) | Valves | |
| JP2003227571A (en) | Poppet valve | |
| JP2002071048A (en) | Automatic pressure regulating valve | |
| JPS6235574B2 (en) | ||
| JP2001165336A (en) | Valve for preventing coming-out of high-temperature water delivery | |
| JP2584250B2 (en) | Mixing valve device | |
| JPH09280399A (en) | Safety valve | |
| JP3032943B2 (en) | Constant flow valve | |
| JP3189473B2 (en) | Hot water mixing equipment | |
| JP2009133354A (en) | Flow control device | |
| JP2561306Y2 (en) | Pressure proportional control valve with constant flow valve | |
| US3592232A (en) | Fuel control system and pneumatically operated valve means therefor or the like |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20050830 |
|
| A521 | Written amendment |
Effective date: 20051027 Free format text: JAPANESE INTERMEDIATE CODE: A523 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060110 |
|
| A521 | Written amendment |
Effective date: 20060310 Free format text: JAPANESE INTERMEDIATE CODE: A523 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20060523 |