【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最適な混合湯温を得
る湯水混合制御装置に関するものである．従来の技術
従来この種の湯水混合装置は第３図に示すようなものが
あった．
第３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ｌ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ＰＣＩ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ＰＨＩ，
ＰＣＩの圧力差で動作するピストン９とで構威されてお
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．湯側弁体４と水側弁体
６にはそれぞれ回転力発生手段として羽根４ａおよび６
ａが複数あり、この羽根で水流により自動調圧弁３が回
転しゴ主やスケールの付着を防止している．湯と水の混
合比はギャｌＯを有するモータｌ１によって付勢される
温調弁１２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１１節
開閉弁１４を介して出湯されるが、その温度はサーごス
タ１５によって、またその流量は流量センサ１６によっ
て検知され、設定器１７の値に一致させるべく制御器１
８がモータ１１と流量調節開閉弁１４を付勢す発明が解
決しようとする課題
しかしながら上記のような構威では、自動調圧弁３と温
調弁１２とが独立しているため大型になる．本発明はか
かる従来の課題を解消するもので、その目的は調圧弁と
温調弁とのそれぞれの機能を複合した小型の混合装置を
得ることにある．課題を解決するための手段
上記の目的を達威するために本発明の湯水混合制御装置
は、湯波路および水流路と、湯流路および水流路の流量
をｌｌｗ１する湯側弁体および水側弁体と、湯流路と水
流路の混合部と、湯側弁体と水側弁体とを一体に操作す
る弁軸上に設けられた磁性体と、磁性体と磁気的に結合
された磁力発生手段と、磁力発生手段の位置制御手段と
を備えたものである．
作用
以上の構成により、湯側弁体と水側弁体との出口圧をそ
れぞれバランスさせながら、位置制御手段によって磁力
発生手段を変位させ、磁気的に結合された弁軸への操作
力を可変することによって混合比を調節するものである
．
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３図と同一部品に
ついては同一番号を付している．水流路２側にはモータ
１９ａとギャ１９ｂとからなる位置制御千段ｌ９があっ
て、その出力軸１９ｃはねし２０と係合し回転にって保
持体２ｌを上下に移動させる．保持体２１には永久磁石
などの磁力発生手段２２が取りつけられており、この磁
力発生手段２２は磁性体２３と磁気的に結合している．
本実施例では第２図に示すように磁力発生千段２２の下
端と磁性体２３の上端とを同し磁極とし互いに反発する
ように位置制御手段１９を反時計方向回転させるとに磁
力発生手段２２が下方向に移動し、この磁力発生千段２
２と磁気的結合している磁性体２３は下方向に力を受け
る．この力によって磁性体２３と一体に動く弁軸２４に
より当接体２５を介して水側弁体６、この弁体と一体の
水側弁軸６ａ、湯側弁体４と一体の湯側弁軸４−ａ、湯
側弁軸４をそれぞれ一体的に主スプリング２６の力に抗
して移動させる．湯側弁体４と湯側弁紬４ａと水側弁軸
６ａと水側弁体６とは一体に移動し自動調圧弁３を構威
する．２７保持体２２を支持するスプリング、２８は封
止プラグである．湯側弁体４と水側弁体６はそれぞれ円
周上に設けられた孔４ｂと６ｂにより弁を構威しており
、湯梳路ｌと水流路２より湯側弁体４の孔４ｂと水側弁
体６の孔６ｂとをそれぞれ通過した湯と水は湯側可変絞
り２９と水側可変絞り３０とを通過して混合部ｌ３で混
合する．可変絞り２９、３０は湯側弁体４と水側弁体６
の内部に、それぞれスプリング３１， ３２で押しつけ
られている．例えば湯が流れることによって湯側可変絞
り２９の両面に差圧が生じスプリング３ｌの力に抗して
湯側可変絞り２９が開く．この可変絞り２９は通遇する
流体の流量に応じて開度が決定される．スプリング３ｌ
の力を変えることにより通遇する流量と圧力差の関係を
調節することができる．水側も同様である．可変絞り２
９、３０を通過した流体は混合部１３でそれぞれ合流し
さらに湯と水は混合する．
次に本発明の動作を説明する．制御回路ｌ８から位置制
御装置１９を反時計方向に駆動すると、磁力発生手段２
２は下方向に移動し、この移動によって磁力発生手段２
２と磁性体２３との距離が小さくなり、その反発力は大
きくなって弁軸２４を下方向に付勢する．その結果水側
を閉じ湯側を開き、湯側弁体４と水側弁体６の流量によ
る差圧がそれぞれ変化し自動調圧弁３として作用しバラ
ンスする．その結果混合湯温は高くなる．また位置制御
装置２２を時計方向に駆動すると、磁力発生手段２２と
磁性体２３との距離が大きくなって、弁軸２４への下方
向の力が減少し、主スプリング２６の力によって自動調
圧弁３を上方向へ移動させて水側を開き湯側を閉じる．
その結果混合湯温は低くなる．このように位置制御装置
２２の回転を調節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．混合湯温はサーミスタ１
５によって検出され制御回路ｌ８で演算されて位置制御
装置２２の回転をコントロールする．２次圧ＰＨ２とＰ
Ｃ２とは磁力発生千段２２と磁性体２３との反発カによ
るバランス点での状態を保ち、湯と水の混合比の変化は
小さく湯温は安定している．
また混合流量の変化や供給圧力の変化などの外乱によっ
て湯や水の流量が変化しても、可変絞り２９、３０で発
生する差圧が変化し自動調圧弁として作用するので、直
ちに流量は補正され過渡的な湯温の変化さえもきわめて
小さい．
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、湯流路および水流路の流置を調節する湯側
弁体および水側弁体と、湯側弁体と水側弁体とを一体に
操作する弁軸上に設けられた磁性体と、磁性体と磁気的
に結合された磁力発生手段と、磁力発生手段の位置制御
手段とで小型で低価格にでき、非接触で自動調圧弁に力
を伝達することができ可動部のシールが不要で信頼性が
高い．DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot water mixing control device that adjusts the mixing ratio of hot water and water to obtain an optimal mixed water temperature. Prior Art Conventionally, there was a hot water mixing device of this type as shown in Figure 3. In FIG. 3, 1 is a hot water flow path, 2 is a water flow path, and an automatic pressure regulating valve 3 is provided in relation to each flow path. The automatic pressure regulating valve 3 includes a hot water side valve body 4 that reduces the primary pressure PH1 of the hot water flow path 1, a hot water side valve seat 5, a water side valve body 6 that reduces the primary pressure PCI of the water flow path 2, and a water side valve body 4 that reduces the primary pressure PH1 of the hot water flow path 1. Valve seat 7, hot water side valve body 4, and water side valve body 6
and the primary pressure PHI after depressurizing the hot water and water,
The piston 9 operates based on the PCI pressure difference, and even if the pressure of hot water or water suddenly changes, the automatic pressure regulating valve 3 moves with that pressure, and the secondary pressures PH2 and PC2 of the hot water and water are adjusted. It acts so that they are always kept equal. The hot water side valve body 4 and the water side valve body 6 are provided with vanes 4a and 6, respectively, as rotational force generating means.
There are multiple blades a, and the water flow rotates the automatic pressure regulating valve 3 using these blades to prevent dirt and scale from adhering. The mixing ratio of hot water and water is varied by moving the temperature control valve 12 to the left and right, which is energized by a motor l1 having a galvanic lO, thereby changing the mixing temperature. Reference numeral 13 denotes a mixing section for hot water and water. After mixing, the hot water is discharged via an 11-section flow valve 14. The temperature of the hot water is detected by a servo star 15, the flow rate is detected by a flow sensor 16, and the water is detected by a setting device. controller 1 to match the value of 17.
8 energizes the motor 11 and the flow control valve 14. Problems to be Solved by the Invention However, in the above structure, the automatic pressure control valve 3 and the temperature control valve 12 are independent, resulting in a large size. The present invention is intended to solve these conventional problems, and its purpose is to provide a compact mixing device that combines the functions of a pressure regulating valve and a temperature regulating valve. Means for Solving the Problems In order to achieve the above object, the hot water mixing control device of the present invention has a hot water flow path, a water flow path, a hot water side valve body and a water side valve body for controlling the flow rates of the hot water flow path and the water flow path. A magnetic body provided on a valve shaft that integrally operates the valve body, the mixing part of the hot water flow path and the water flow path, the hot water side valve body and the water side valve body, and a magnetic body magnetically coupled to the magnetic body. It is equipped with a magnetic force generating means and a position control means for the magnetic force generating means. Operation With the above configuration, the magnetic force generation means is displaced by the position control means while balancing the outlet pressures of the hot water side valve body and the water side valve body, and the operating force to the magnetically coupled valve shaft is varied. The mixing ratio is adjusted by doing this. EXAMPLE An example of the present invention will be described below with reference to the drawings. Note that Figure 1 is a cross-sectional view of the hot water mixing device, and the same parts as in Figure 3 are given the same numbers. On the water flow path 2 side, there is a position control stage 19 consisting of a motor 19a and a gear 19b, and its output shaft 19c engages with the spring 20 and rotates to move the holder 2l up and down. A magnetic force generating means 22 such as a permanent magnet is attached to the holding body 21, and this magnetic force generating means 22 is magnetically coupled to a magnetic body 23.
In this embodiment, as shown in FIG. 2, the position control means 19 is rotated counterclockwise so that the lower end of the magnetic force generating stage 22 and the upper end of the magnetic body 23 are the same magnetic pole and repel each other. 22 moves downward, and this magnetic force is generated 1,000 steps 2
The magnetic body 23, which is magnetically coupled to the magnetic body 2, receives a downward force. Due to this force, the valve shaft 24, which moves together with the magnetic body 23, passes through the contact body 25 to the water side valve body 6, the water side valve shaft 6a integral with this valve body, and the hot water side valve integral with the hot water side valve body 4. The shaft 4-a and the hot water side valve shaft 4 are each moved integrally against the force of the main spring 26. The hot water side valve body 4, the hot water side valve pongee 4a, the water side valve shaft 6a, and the water side valve body 6 move together to form the automatic pressure regulating valve 3. 27 is a spring supporting the holder 22, and 28 is a sealing plug. The hot water side valve body 4 and the water side valve body 6 constitute valves by holes 4b and 6b provided on the circumference, respectively, and the hole 4b of the hot water side valve body 4 is connected to the hot water channel l and the water flow path 2. The hot water and water that have passed through the hole 6b of the water side valve body 6 pass through the hot water side variable throttle 29 and the water side variable throttle 30, and are mixed in the mixing section l3. The variable throttles 29 and 30 are the hot water side valve body 4 and the water side valve body 6.
are pressed inside by springs 31 and 32, respectively. For example, when hot water flows, a pressure difference is created on both sides of the hot water side variable throttle 29, and the hot water side variable throttle 29 opens against the force of the spring 3l. The opening degree of this variable throttle 29 is determined according to the flow rate of the fluid flowing through it. spring 3l
By changing the force, the relationship between the prevailing flow rate and pressure difference can be adjusted. The same goes for the water side. variable aperture 2
The fluids that have passed through 9 and 30 join together in the mixing section 13, and the hot water and water are further mixed. Next, the operation of the present invention will be explained. When the position control device 19 is driven counterclockwise from the control circuit l8, the magnetic force generating means 2
2 moves downward, and this movement causes the magnetic force generating means 2 to
2 and the magnetic body 23 becomes smaller, the repulsive force increases and urges the valve stem 24 downward. As a result, the water side is closed and the hot water side is opened, and the differential pressure due to the flow rate between the hot water side valve body 4 and the water side valve body 6 changes, acting as an automatic pressure regulating valve 3 and achieving balance. As a result, the temperature of the mixed water increases. Further, when the position control device 22 is driven clockwise, the distance between the magnetic force generating means 22 and the magnetic body 23 increases, the downward force on the valve shaft 24 decreases, and the force of the main spring 26 causes the automatic pressure regulating valve to Move 3 upward to open the water side and close the hot water side.
As a result, the mixed water temperature becomes lower. By adjusting the rotation of the position control device 22 in this manner, the balance point of the automatic pressure regulating valve 3 can be moved. Mixed water temperature is thermistor 1
5 and is calculated by the control circuit 18 to control the rotation of the position control device 22. Secondary pressure PH2 and P
C2 maintains a state at a balance point due to the repulsion between the magnetic force generation stage 22 and the magnetic body 23, and the change in the mixing ratio of hot water to water is small and the water temperature is stable. In addition, even if the flow rate of hot water changes due to disturbances such as changes in the mixing flow rate or supply pressure, the differential pressure generated between the variable throttles 29 and 30 changes and acts as an automatic pressure regulating valve, so the flow rate is immediately corrected. Even transient changes in water temperature are extremely small. Effects of the Invention As described above, the hot water mixing control device of the present invention has a hot water flow path, a water flow path, a hot water side valve body and a water side valve body that adjust the flow positions of the hot water flow path and the water flow path, and a hot water side valve. It is small and low-cost thanks to the magnetic body provided on the valve stem that operates the valve body and water side valve body as one, the magnetic force generating means magnetically coupled to the magnetic body, and the position control means of the magnetic force generating means. It can transmit force to the automatic pressure regulating valve in a non-contact manner, eliminating the need for seals on moving parts and is highly reliable.
【図面の簡単な説明】[Brief explanation of the drawing]
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図は同装置の位置制御部の断面図、第３図は従来
の湯水混合制御装直の構威断面図である．
１・・・・・・湯流路、２・・・・・・水流路、４・・
・・・・湯側弁体、６・・・・・・水側弁体、ｌ３・・
・・・・混合部、１９・・・・・・位置制御手段、２２
・・・・・・磁力発生手段、２３・・・・・・磁性体、
２４・・・・・・弁軸．Fig. 1 is a sectional view of a hot water mixing control device according to an embodiment of the present invention, Fig. 2 is a sectional view of a position control section of the same device, and Fig. 3 is a structural sectional view of a conventional hot water mixing control device. be. 1...Hot water flow path, 2...Water flow path, 4...
...Hot water side valve body, 6...Water side valve body, l3...
...Mixing section, 19...Position control means, 22
...Magnetic force generating means, 23...Magnetic material,
24...Valve stem.