JP2661278B2 - Hot water mixing control device - Google Patents
Hot water mixing control deviceInfo
- Publication number
- JP2661278B2 JP2661278B2 JP21642389A JP21642389A JP2661278B2 JP 2661278 B2 JP2661278 B2 JP 2661278B2 JP 21642389 A JP21642389 A JP 21642389A JP 21642389 A JP21642389 A JP 21642389A JP 2661278 B2 JP2661278 B2 JP 2661278B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- hot water
- temperature
- mixing valve
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Temperature-Responsive Valves (AREA)
- Magnetically Actuated Valves (AREA)
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
- Control Of Temperature (AREA)
- Domestic Plumbing Installations (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は湯と水の混合比率を調整した最適な混合湯温
を得る温水混合制御装置に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water mixing control device that obtains an optimum mixed hot water temperature by adjusting a mixing ratio of hot water and water.
従来の技術 従来この種の湯水混合装置は第７図に示すようなもの
があった。2. Description of the Related Art Conventionally, this type of hot water mixing apparatus has been as shown in FIG.
第７図において、１は湯流路、２は水流路であり、各
流路に関連して自動調圧弁３が設けられている。自動調
圧弁３は、湯流路１の１次圧力PH1を減圧する湯側弁体
４、湯側弁座５と、水流路２の１次圧力PC1を減圧する
水側弁体６、水側弁座７と、湯側弁体４と水側弁体６を
連結する弁軸８と、湯と水の減圧後の１次圧PH1,PC1の
圧力差で動作するピストン９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が移
動し、湯と水の２次圧PH2とPC2とが常に等しく保たれる
ように作用する。湯と水の混合比はモータ11によって付
勢される混合弁を左右に移動させて可変し、混合温度を
変える。13は湯と水の混合部であり、混合後は流量調節
開閉弁14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によって検知され、設定手段17の値に
一致させるべく制御手段18がモータ11と流量調節開閉弁
14を付勢する。In FIG. 7, 1 is a hot water flow path, 2 is a water flow path, and an automatic pressure regulating valve 3 is provided in connection with each flow path. The automatic pressure regulating valve 3 includes a hot water side valve body 4 and a hot water side valve seat 5 for reducing the primary pressure PH1 of the hot water flow path 1, a water side valve body 6 for reducing the primary pressure PC1 of the water flow path 2, and a water side. It comprises a valve seat 7, a valve shaft 8 connecting the hot water side valve body 4 and the water side valve body 6, and a piston 9 which operates with a pressure difference between the primary pressure PH <b> 1 and the PC <b> 1 after decompression of hot water and water. Thus, even if the pressure of hot water or water changes suddenly, the automatic pressure regulating valve 3 moves at that pressure, and acts so that the secondary pressure PH2 of the hot water and water and PC2 are always kept equal. The mixing ratio of hot water and water is varied by moving the mixing valve energized by the motor 11 left and right to change the mixing temperature. Reference numeral 13 denotes a mixing section of hot water and water. After mixing, the hot water is discharged through a flow rate control opening / closing valve 14. Is controlled by the motor 11 and the flow control on / off valve so as to match the value of the setting means 17.
Energize 14.
発明が解決しようとする課題 しかしながら上記のような構成では、長期間使用しな
かった場合等において弁内の水分中に含まれている物質
（カルシウム、塩素等：以下スケールと呼ぶ）が混合弁
12等の表面に析出し、弁が固着してしまうことがある。SUMMARY OF THE INVENTION However, in the above-described configuration, a substance (calcium, chlorine, etc .; hereinafter referred to as scale) contained in the water in the valve when the valve is not used for a long period of time is mixed valve.
It may precipitate on the surface such as 12 and stick the valve.
本発明はかかる従来の課題を解消するもので、出湯停
止後も弁内の温度が一定温度以下になるよう一定時間経
過するまで混合弁を駆動して、スケール付着を防止し弁
の固着を防ぐことを目的とする。The present invention solves such a conventional problem, and drives the mixing valve until a predetermined time elapses so that the temperature inside the valve becomes equal to or lower than a certain temperature even after the tapping is stopped, thereby preventing scale adhesion and preventing sticking of the valve. The purpose is to:
さらに、第２の目的は、上記のようにして出湯停止時
に混合弁を駆動している際に再出湯を要求された場合、
混合弁が出湯温度の安全である位置にきたとき出湯を開
始することである。Further, the second object is that, when the mixing valve is driven at the time of stoppage of tapping as described above, a request for re-starting tapping,
To start tapping when the mixing valve is in a position where the tapping temperature is safe.
課題を解決するための手段 上記課題を解決するために本発明の湯水混合装置は、
湯流路および水流路と、前記湯流路および水流路の流量
を調節する混合弁と、前記混合弁を駆動する混合弁駆動
手段と、混合された湯量を調節する流量調節開閉弁と、
混合湯温を設定する設定手段と、出湯を停止した後一定
時間前記混合弁を駆動する信号を出力する第１の制御手
段と、前記混合弁が設定温度以下の混合湯を供給する位
置に設定してから前記流量調節開閉弁の開成動作を行う
第２の制御手段とを備えた構成としたものである。Means for Solving the Problems In order to solve the above problems, the hot and cold water mixing device of the present invention is
A hot water flow path and a water flow path, a mixing valve that adjusts the flow rate of the hot water flow path and the water flow path, a mixing valve driving unit that drives the mixing valve, and a flow rate adjustment on-off valve that adjusts a mixed hot water amount,
Setting means for setting the temperature of the mixed hot water, first control means for outputting a signal for driving the mixing valve for a certain period of time after stopping the tapping, and setting the mixing valve at a position for supplying the mixed hot water having a temperature equal to or lower than a set temperature. Then, a second control means for performing an opening operation of the flow control on-off valve is provided.
作用 以上の構成により、出湯を停止した後、一定時間を経
過するまで混合弁を駆動し、スケール付着を防止すると
ともに、出湯停止後において混合弁を駆動している際に
再出湯を要求されると出湯度が設定温度以下となる安全
な位置に混合弁がきたときに流量調節開閉弁を開く。Operation With the above configuration, after the tapping is stopped, the mixing valve is driven until a certain time elapses to prevent the scale from adhering, and when the mixing valve is driven after the tapping is stopped, the tapping is required again. Then, when the mixing valve comes to a safe position where the degree of hot water falls below the set temperature, the flow control on-off valve is opened.
実施例 以下、本発明の一実施例を図面を用いて説明する。な
お、第１図は湯水混合装置の断面図で第７図と同一部品
については同一番号を付している。Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of the hot and cold water mixing apparatus, and the same parts as those in FIG. 7 are denoted by the same reference numerals.
19は付勢手段で、自動調圧弁３と付勢手段19で混合弁
20を形成する。21は前記付勢手段19の力と対向して可変
バイアス力を付与する混合弁駆動手段である。混合弁駆
動手段21は、磁性体からなるプランジャ22と、前記プラ
ンジャ22の周りに防水および絶縁されたコイル23を有
し、前記コイル23は制御手段18に接続されている。流量
調節開閉弁14は流量調節開閉弁駆動手段24により駆動さ
れ、流量は流量検出手段16で検出する。流量調節開閉弁
14の閉止は閉止検出手段25により検出する。19 is a biasing means, and is a mixing valve formed by the automatic pressure regulating valve 3 and the biasing means 19.
Form 20. Numeral 21 is a mixing valve driving means for applying a variable bias force in opposition to the force of the urging means 19. The mixing valve driving means 21 has a plunger 22 made of a magnetic material, and a coil 23 which is waterproof and insulated around the plunger 22. The coil 23 is connected to the control means 18. The flow control on-off valve 14 is driven by a flow control on-off valve driving unit 24, and the flow rate is detected by the flow detection unit 16. Flow control on-off valve
The closure of 14 is detected by the closure detection means 25.
第２図は制御手段18の例である。26は主制御手段で、
27は第１の制御手段で、28は第１の駆動量設定手段で、
29は第２の制御手段で、30は第２の駆動量設定手段であ
る。FIG. 2 shows an example of the control means 18. 26 is the main control means
27 is a first control means, 28 is a first drive amount setting means,
29 is second control means, and 30 is second drive amount setting means.
次に本発明の構成の動作を説明する。 Next, the operation of the configuration of the present invention will be described.
制御手段18からコイル23に電流を流すと、磁性体から
なるプランジャ22はフレミングの法則により弁軸８にバ
イアス力を付与する。このバイアス力と付勢手段19の付
勢力がつりあったところで自動調圧弁はバランスする。When a current flows from the control means 18 to the coil 23, the plunger 22 made of a magnetic material applies a bias force to the valve shaft 8 according to Fleming's law. When the biasing force and the urging force of the urging means 19 are balanced, the automatic pressure regulating valve balances.
したがって、コイル23に流す電流を変化することによ
り自動調圧弁３のバランス点を移動することができる。Therefore, the balance point of the automatic pressure regulating valve 3 can be moved by changing the current flowing through the coil 23.
例えば、電流の小さい場合は付勢手段19の力の方が強
いため湯側弁体４より水側弁体６の方が大きく開き、出
湯温度が低くなる。For example, when the current is small, the force of the urging means 19 is stronger, so that the water-side valve body 6 opens more than the hot-water-side valve body 4, and the tapping temperature decreases.
電流を大きくすると付勢手段19の力に対向してプラン
ジャ22を押し出すことにより湯側弁体４が開きだし結果
的に出湯温度が高くなる。When the current is increased, the plunger 22 is pushed out against the force of the urging means 19, so that the hot-water-side valve body 4 opens, and as a result, the hot-water tapping temperature increases.
このようにして、制御手段18は混合湯温検出手段15の
信号と設定手段17の信号を入力することにより出湯温度
が設定温度になるようにコイル23に流す電流を調節す
る。In this way, the control means 18 inputs the signal of the mixed hot water temperature detecting means 15 and the signal of the setting means 17 to adjust the current flowing through the coil 23 so that the tap water temperature becomes the set temperature.
しかし、混合弁20にはスケールが付着し、弁が固着し
てしまうことがある。これらの現象を抑える手段を以下
に説明する。However, scale may adhere to the mixing valve 20, and the valve may stick. The means for suppressing these phenomena will be described below.
スケールの付着は、湯温によって大きく異なり80℃で
は40℃の数十倍析出する。また流速の遅い方が付着し易
い。このため、出湯中および出湯停止後混合部13の温度
が冷えきるまでの間が混合弁20へのスケール付着が生じ
易いことになる。The adhesion of the scale varies greatly depending on the temperature of the hot water, and at 80 ° C., it is deposited several tens of times at 40 ° C. Also, the lower the flow rate, the easier the adhesion. For this reason, scale adhesion to the mixing valve 20 is likely to occur during the tapping and after the tapping is stopped until the temperature of the mixing unit 13 is completely cooled.
しかし出湯中は、主制御手段26が混合湯温を設定温度
になるようコイル電流を調節し混合弁20を動かしている
ためスケールは付着しにくい。However, during tapping, since the main control means 26 adjusts the coil current to move the mixed hot water temperature to the set temperature and moves the mixing valve 20, the scale does not easily adhere.
したがって、出湯停止後において高温の混合湯が混合
部に滞留するため最もスケール付着が促進される可能性
がある。Therefore, after the hot water is stopped, the high-temperature mixed hot water stays in the mixing section, so that there is a possibility that the scale adhesion is most promoted.
そこで、主制御手段26は閉止検出手段25の信号によっ
て流量調節開閉弁14が閉止し出湯が停止したことを検出
（第３図ａ点）すると、タイマ手段31に信号を出す。そ
して、混合弁20を動かすため第１の制御手段27に信号を
出し、前記第１の制御手段27はこの信号により第１の駆
動量設定手段28に信号を出し始め混合弁20を駆動する。
タイマ手段31は主制御手段26からの信号により時間を計
りはじめる。The main control means 26 sends a signal to the timer means 31 when it detects that the flow control on-off valve 14 has closed and the tapping has stopped (point a in FIG. 3) based on a signal from the close detection means 25. Then, a signal is sent to the first control means 27 to move the mixing valve 20, and the first control means 27 starts to send a signal to the first drive amount setting means 28 based on this signal to drive the mixing valve 20.
The timer means 31 starts to measure time by a signal from the main control means 26.
出湯停止後は弁内の温度は高温湯が供給されないため
どんどん下がってくる。弁内の温度がスケールが析出し
ないで温度まで下がる時間をあらかじめ主制御手段26に
設定しておく。タイマ手段29で計っている時間があらか
じめ主制御手段26に設定していた時間になると（第３図
ｂ点）主制御手段26は第１の制御手段27に信号を出し混
合弁20の駆動をやめる。Tapping after stopping a temperature in the valve will come steadily down since the high-temperature hot water is not supplied. The time during which the temperature in the valve falls to the temperature without the deposition of scale is set in the main control means 26 in advance. When the time measured by the timer means 29 reaches the time previously set in the main control means 26 (point b in FIG. 3), the main control means 26 sends a signal to the first control means 27 to drive the mixing valve 20. Stop.
この時の第１の駆動量設定手段28による混合弁20の動
作の一例としてコイル電流の変化を第３図に示す。出湯
停止後一定時間（第３図Ｔ）はすぐに再出湯される場合
に備えて出湯中の電流値を保持しておく。その後、コイ
ル電流は混合弁20が水全開となるminから湯全開となるm
axまで定期的に変えていく。FIG. 3 shows a change in coil current as an example of the operation of the mixing valve 20 by the first drive amount setting means 28 at this time. For a certain period of time after the stoppage of tapping (T in FIG. 3), the current value during tapping is held in case of tapping again immediately. Thereafter, the coil current is changed from the minimum value at which the mixing valve 20 is fully opened to the maximum value at which the hot water is fully opened.
Change to ax regularly.
このように混合弁20が動くことによりスケールは混合
弁20に付着しにくくなる。さらにもしスケールが混合弁
20に付着しても定期的に混合弁20自体が駆動されるた
め、弁が固着する前にスケールを取り除くことができ
る。The movement of the mixing valve 20 makes it difficult for the scale to adhere to the mixing valve 20. Furthermore, if the scale is a mixing valve
Since the mixing valve 20 itself is periodically driven even if it adheres to the scale 20, the scale can be removed before the valve is fixed.
第３図の例では混合弁20を間欠的に動作しているが、
この他にも混合湯温検出手段15の信号が予め設定してお
いた値になるまで連続的に混合弁20を動作する、また出
湯停止直後と混合湯温検出手段15の信号が予め設定して
おいた値になった時点の２回のみ混合弁を動作する、さ
らに混合湯温検出手段15の信号が予め設定しておいた値
になった時点の１回だけ混合弁を動作する等がスケール
付着防止と弁の固着に対して有効である。In the example of FIG. 3, the mixing valve 20 is operated intermittently.
In addition to this, the mixing valve 20 is continuously operated until the signal of the mixed hot water temperature detecting means 15 reaches a preset value. The mixing valve is operated only twice when the value reaches the preset value, and the mixing valve is operated only once when the signal of the mixed hot water temperature detecting means 15 reaches a preset value. It is effective for preventing scale adhesion and sticking of valves.
次に、上記の出湯停止中に混合弁20を動作している際
再出湯の要求があった場合について説明する。Next, a case will be described in which a request for re-watering is made while the mixing valve 20 is operating while the above-mentioned hot water is stopped.
出湯停止後設定手段17等により出湯を要求した場合に
おいて、上記に説明したようにスケール付着防止のため
混合弁20を駆動している時に、すぐに流量調節開閉弁14
を開くと設定温度と大きくずれた混合湯が出湯する危険
がある。そこで、第１の制御手段の信号を主制御手段は
モニタしており再出湯要求があった場合流量調節開閉弁
14を開くタイミングを調節する。When the tapping is requested by the setting means 17 or the like after the tapping is stopped, when the mixing valve 20 is driven to prevent scale adhesion as described above, the flow control on-off valve 14
There is a danger that the mixed hot water that greatly deviates from the set temperature will flow out when the is opened. Therefore, the main control means monitors the signal of the first control means, and when there is a re-watering request, the flow control on-off valve
Adjust the opening timing of 14.
以下の説明では、わかりやすいように出湯停止中に設
定手段17等で設定温度が変化されず、前回停止した時の
設定温度になっているとする。In the following description, it is assumed that the set temperature is not changed by the setting means 17 or the like during the stop of hot water supply, and is the set temperature at the time of the previous stop for easy understanding.
まず、再出湯要求があった時に混合弁の位置が設定温
度を供給する位置またはそれよりも低温側にあった場合
（第４図ｃ点または第５図ｄ点）は主制御手段は第２の
制御手段29に信号を出し、前記第２の制御手段29はこの
信号により第２の駆動量設定手段28に信号を出し始め流
量調節開閉弁14を開く。この時、出湯温度は設定温度以
下であり安全である。First, when the position of the mixing valve is at the position for supplying the set temperature or at a temperature lower than that at the time of the re-watering request (point c in FIG. 4 or point d in FIG. 5), the main control means sets the second control to the second position. The second control means 29 starts to send a signal to the second drive amount setting means 28 based on this signal, and opens the flow control on-off valve 14. At this time, the tapping temperature is lower than the set temperature, which is safe.
また、再出湯要求があった時に混合弁の位置が設定温
度より高温側にあった場合（第６図ｅ点）は主制御手段
は第１の制御手段27の信号をモニタしているため混合弁
20の駆動電流が設定温度を供給できる値になる信号を第
１の制御手段27が出した時（第６図ｆ点）に第２の制御
手段29に信号を出し、前記第２の制御手段29はこの信号
により第２の駆動量設定手段28に信号を出し始め流量調
節開閉弁14を開く。この処理を行なうことにより出湯温
度は設定温度より高温になることが無くなり安全な湯温
を供給することができる。When the position of the mixing valve is higher than the set temperature at the time of the re-watering request (point e in FIG. 6), the main control means monitors the signal of the first control means 27, so that mixing is performed. valve
When the first control means 27 outputs a signal at which the drive current 20 can supply the set temperature (point f in FIG. 6), a signal is output to the second control means 29, and the second control means 29 starts to send a signal to the second drive amount setting means 28 in response to this signal, and opens the flow control on-off valve 14. By performing this process, the tap water temperature does not become higher than the set temperature, and a safe hot water temperature can be supplied.
出湯後は、主制御手段26が直接第１の駆動量設定手段
28に信号を出しコイル電流を制御することにより混合温
度を調節するとともに、第２の駆動量設定手段30にも直
接信号を出し出湯流量を調節する。After tapping, the main control means 26 directly operates the first drive amount setting means.
In addition to adjusting the mixing temperature by sending a signal to the coil 28 and controlling the coil current, a signal is also sent directly to the second drive amount setting means 30 to adjust the tap water flow rate.
通常の使用状態においては水圧変動時には従来と同様
に自動調圧弁３が動作し、湯側弁体４、水側弁体６とピ
ストン９との受圧面積を等しくしておけばその２次圧PH
2とPC2とは付勢手段19と駆動手段21によるバランス点で
の状態を保つ。In a normal use state, when the water pressure fluctuates, the automatic pressure regulating valve 3 operates as in the conventional case, and if the pressure receiving areas of the hot water side valve element 4, the water side valve element 6, and the piston 9 are made equal, the secondary pressure PH
2 and PC2 maintain the state at the balance point by the urging means 19 and the driving means 21.
さらに、調圧弁と温調弁とを１つにできるため形を小
さく構成することができる。Further, since the pressure regulating valve and the temperature regulating valve can be integrated into one, the size can be reduced.
発明の効果 以上のように本発明の湯水混合制御装置は、湯流路お
よび水流路と、前記湯流路および水流路の流量を調節す
る混合弁と、前記混合弁を駆動する混合弁駆動手段と、
混合された湯量を調節する流量調節開閉弁と、混合湯温
を設定する設定手段と、出湯を停止した後一定時間前記
混合弁を駆動する信号を出力する第１の制御手段と、前
記混合弁が設定温度以下の混合湯を供給する位置に設定
してから前記流量調節開閉弁の開成動作を行う第２の制
御手段とを備えたので、出湯停止後も一定時間経過する
まで混合弁を定期的に駆動することが可能となる。この
ため出湯停止後の高温で流速の無い弁内においても混合
弁へのスケール付着を防止することができ、混合弁の固
着を防ぎ安定した混合湯温を供給することができる。Effect of the Invention As described above, the hot and cold water mixing control device of the present invention provides a hot water flow path and a water flow path, a mixing valve that adjusts the flow rates of the hot water flow path and the water flow path, and a mixing valve driving unit that drives the mixing valve. When,
A flow control on / off valve for adjusting the amount of mixed hot water, setting means for setting the temperature of the mixed hot water, first control means for outputting a signal for driving the mixing valve for a certain period of time after stopping the tapping, and the mixing valve Is provided with a second control means for opening the flow rate control on-off valve after setting to a position for supplying mixed hot water having a temperature equal to or lower than a set temperature. It becomes possible to drive it. For this reason, it is possible to prevent the scale from adhering to the mixing valve even in the high-temperature valve having no flow velocity after stopping the tapping, and to prevent the mixing valve from sticking and to supply a stable mixed-water temperature.
さらに、出湯停止後にスケール付着防止のため混合弁
を駆動している際再出湯要求があった場合は混合弁の位
置が設定温度以下になってから流量調節開閉弁を開くこ
とにより出湯温度は設定温度より高温になることが無く
なり安全な湯温を供給することができる。In addition, if there is a re-watering request when the mixing valve is driven to prevent scale adhesion after stopping the tapping, the tapping temperature is set by opening the flow control on-off valve after the position of the mixing valve has fallen below the set temperature. The temperature does not become higher than the temperature, and a safe hot water temperature can be supplied.
第１図は本発明の一実施例の湯水混合制御装置の断面
図、第２図は同装置の制御ブロック図、第３図、第４
図、第５図、第６図は同装置の混合湯温の特性図、第７
図は従来の湯水混合制御装置の断面図である。 １……湯流路、２……水流路、15……混合湯温検出手
段、17……設定手段、18……制御手段、20……混合弁、
25……閉止検出手段。FIG. 1 is a sectional view of a hot and cold water mixing control device according to one embodiment of the present invention, FIG. 2 is a control block diagram of the device, FIG.
FIG. 5, FIG. 5 and FIG. 6 are characteristic diagrams of the mixed hot water temperature of the apparatus, and FIG.
FIG. 1 is a sectional view of a conventional hot and cold water mixing control device. 1 hot water flow path, 2 water flow path, 15 mixed hot water temperature detecting means, 17 setting means, 18 control means, 20 mixing valve,
25 ... Closed detection means.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 長岡 行夫 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (72)発明者 城戸内 康夫 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Yukio Nagaoka 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. In company
Claims (1)
水流路の流量を調節する混合弁と、前記混合弁を駆動す
る混合弁駆動手段と、混合された湯量を調節する流量調
節開閉弁と、混合湯温を設定する設定手段と、出湯を停
止した後一定時間前記混合弁を駆動する信号を出力する
第１の制御手段と、前記混合弁が設定温度以下の混合湯
を供給する位置に設定してから前記流量調節開閉弁の開
成動作を行う第２の制御手段とを有する湯水混合制御装
置。1. A hot water flow path and a water flow path, a mixing valve for adjusting flow rates of the hot water flow path and the water flow path, a mixing valve driving means for driving the mixing valve, and a flow rate adjusting means for adjusting a mixed hot water amount. Opening / closing valve, setting means for setting the temperature of the mixed hot water, first control means for outputting a signal for driving the mixing valve for a certain period of time after stopping the hot water supply, and supplying the mixed hot water at which the mixing valve is at or below the set temperature. And a second control means for performing an opening operation of the flow rate control on-off valve after setting to a position at which the flow rate is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21642389A JP2661278B2 (en) | 1989-08-22 | 1989-08-22 | Hot water mixing control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21642389A JP2661278B2 (en) | 1989-08-22 | 1989-08-22 | Hot water mixing control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0379927A JPH0379927A (en) | 1991-04-04 |
| JP2661278B2 true JP2661278B2 (en) | 1997-10-08 |
Family
ID=16688333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21642389A Expired - Fee Related JP2661278B2 (en) | 1989-08-22 | 1989-08-22 | Hot water mixing control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2661278B2 (en) |
-
1989
- 1989-08-22 JP JP21642389A patent/JP2661278B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0379927A (en) | 1991-04-04 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |