JPH1061796A - Three-way valve - Google Patents
Three-way valveInfo
- Publication number
- JPH1061796A JPH1061796A JP21988596A JP21988596A JPH1061796A JP H1061796 A JPH1061796 A JP H1061796A JP 21988596 A JP21988596 A JP 21988596A JP 21988596 A JP21988596 A JP 21988596A JP H1061796 A JPH1061796 A JP H1061796A
- Authority
- JP
- Japan
- Prior art keywords
- flow path
- ball valve
- valve
- state
- orthogonal
- 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
- Electrically Driven Valve-Operating Means (AREA)
- Multiple-Way Valves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は三方弁、特に、弁
体を操作軸によって回動することにより回路を切り替え
る形式の三方弁に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-way valve, and more particularly to a three-way valve of a type in which a circuit is switched by rotating a valve body by an operation shaft.
【０００２】[0002]
【従来の技術】この種の三方弁として、図１〜図３に示
すものが知られている。このものは、回動弁を球弁(11)
とした伝動弁であり、前記球弁(11)を弁箱(1)に内蔵
し、前記弁箱(1) に取付けた電動機(2) によって前記球
弁(11)を所定角度回動する構成をとる。2. Description of the Related Art As this type of three-way valve, the one shown in FIGS. 1 to 3 is known. This is a rotary valve with a ball valve (11)
The ball valve (11) is built in a valve box (1), and the ball valve (11) is rotated by a predetermined angle by an electric motor (2) attached to the valve box (1). Take.
【０００３】前記弁箱(1) には、図２及び図３に示すよ
うな、第１流路(13)から第２、第３流路(14)(15)に至る
３つの流路がＴ字状に形成されている。そして、前記球
弁(11)にはＬ字状の通過孔(12)が形成されている。これ
により、前記球弁(11)を回動させると、図２のように、
第１流路(13)と第２流路(14)とが前記通過孔(12)を介し
て連通した第１の状態と、第１流路(13)と第３流路(15)
とが前記通過孔(12)を介して連通した第２の状態とに切
り替えられる。この従来の技術によれば、前記電動機
(2) を制御する為の制御装置を組み合わせることによ
り、信号入力に応答して、前記流路切替が自動的に実行
されるものとなる。In the valve box (1), three flow paths from the first flow path (13) to the second and third flow paths (14, 15) as shown in FIGS. 2 and 3 are provided. It is formed in a T shape. An L-shaped passage hole (12) is formed in the ball valve (11). Thereby, when the ball valve (11) is rotated, as shown in FIG.
A first state in which the first flow path (13) and the second flow path (14) communicate with each other through the passage hole (12); a first flow path (13) and a third flow path (15);
Is switched to the second state in which the communication is established through the passage hole (12). According to this conventional technique, the electric motor
By combining a control device for controlling (2), the flow path switching is automatically executed in response to a signal input.
【０００４】前記制御をするには、前記電動機(2) を正
逆駆動可能な可逆モータとすると共に、所定の１つの信
号入力により球弁(11)を正転させると前記球弁(11)を９
０度正転させて図２の第１の状態から図３の第２の状態
になると共に、他の１つの信号入力により図３の第２の
状態から図２の第１の状態に戻るような制御装置を装備
させる。In order to perform the above control, the motor (2) is a reversible motor that can be driven forward and reverse, and the ball valve (11) is rotated forward by one predetermined signal input to rotate the ball valve (11). 9
The first state of FIG. 2 is changed from the first state of FIG. 2 to the second state of FIG. 3 by the normal rotation, and the signal returns to the first state of FIG. 2 from the second state of FIG. Equipped with various control devices.
【０００５】このような場合、前記に電動機(2) として
可逆モータが必要となること、また、前記制御装置とし
ては、正逆回転を実行する制御装置としなければならな
いことなどから、前記電動機(2) が大型化すると共に構
造が複雑なものとなる。また、前記制御装置も複雑にな
る。この結果、このような三方弁が比較的高価なものと
なっていた。In such a case, a reversible motor is required as the electric motor (2), and the control device must be a control device for executing forward and reverse rotation. 2) becomes large and the structure becomes complicated. Further, the control device becomes complicated. As a result, such three-way valves have been relatively expensive.
【０００６】[0006]
【発明が解決しようとする課題】請求項１の発明は、か
かる点に鑑みてなされたものであり、『第１流路(13)の
口部、第２流路(14)の口部、及び、第３流路(15)の口部
が夫々弁箱(1) 内の弁室に開口し、これら口部の軸線が
Ｔ字状に直交状態に交差し、前記弁室に球弁(11)を設
け、前記球弁(11)を回動させることにより前記第１、第
２、及び、第３流路相互の連通状態を切り替えるように
した三方弁』において、前記球弁(11)の駆動装置又はそ
の駆動機構を簡素化できるようにするために、前記球弁
(11)を一定角度９０度同方向に回動させることにより球
弁(11)からの流路連通状態を切り替えられるようにする
ことをその課題とする。SUMMARY OF THE INVENTION The invention of claim 1 has been made in view of the above points, and has been made in consideration of the following problems: "the mouth of the first flow path (13), the mouth of the second flow path (14), And the mouth of the third flow path (15) opens to the valve chamber in the valve box (1), respectively, and the axes of these mouths intersect in a T-shaped orthogonal state, and a ball valve ( 11), wherein the ball valve (11) is rotated to switch the communication between the first, second, and third flow paths. In order to simplify the driving device or its driving mechanism, the ball valve
An object of the present invention is to make it possible to switch the state of communication with the flow path from the ball valve (11) by rotating (11) in the same direction at a constant angle of 90 degrees.
【０００７】請求項２以下の発明は、上記課題を解決し
た上で効果の欄に記載した各対応する効果を生じさせる
ようにすることをその課題とする。It is an object of the present invention to solve the above-mentioned problems and to produce the corresponding effects described in the column of effects.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
に講じた請求項１の発明の解決手段は『前記球弁(11)
は、一対の通過孔(12a)(12b)が対称に設けられ、前記通
過孔の両端の口部軸線が相互に直交すると共に前記口部
軸線が前記球弁(11)の回転軸線に対して直交する構成と
した』ことである。Means for Solving the Problems To solve the above-mentioned problems, the means for solving the problems of the first aspect of the present invention is as follows.
A pair of passage holes (12a) (12b) are provided symmetrically, and the mouth axes at both ends of the passage holes are orthogonal to each other, and the mouth axis is relative to the rotation axis of the ball valve (11). Orthogonal configuration ".
【０００９】この手段の作用を、第１流路(13)が直線状
に対向する第２流路(14)と第３流路(15)に対する直交す
る場合を例に説明する。この手段によれば、一方の通過
孔(12a) を介して第１流路(13)と第２流路(14)とを連通
させた第１の状態では、他方の通過孔(12b) は前記第１
流路(13)とは非連通で第３流路(15)と連通した状態にな
る。（図６参照） この第１の状態から前記球弁(11)を一方（矢印方向）に
９０度回動させると、前記一方の通過孔(12a) を介して
第１流路(13)と第３流路(15)とが連通した第２の状態に
切り替わる。このとき、他方の通過孔(12b) は前記第１
流路(13)とは非連通で第２流路(14)と連通した状態にな
る。（図７参照） この後、前記第２の状態から前記一方に９０度回動させ
ると、他方の通過孔(12b) によって第１流路(13)と第２
流路(14)とが連通した第３の状態になり、前記一方の通
過孔(12a) は前記第１流路(13)とは非連通で第３流路(1
5)と連通した状態になる。この第３の状態から９０度同
方向に回動させると、前記他方の通過孔(12b) を介して
第１流路(13)と第３流路(15)とが連通した第４の状態に
切り替わる。この後、更に同方向に９０度回動させる
と、前記第１の状態に戻る。このようにして、球弁(11)
を９０度同方向に回動させる度に、前記第１の状態→第
２の状態→第３の状態→第４の状態→第１の状態となる
ように流路連通状態が切り替わる。The operation of this means will be described by taking as an example a case where the first flow path (13) is orthogonal to the second flow path (14) and the third flow path (15) which face in a straight line. According to this means, in the first state in which the first flow path (13) and the second flow path (14) are communicated via one of the passage holes (12a), the other passage hole (12b) The first
The channel (13) is not in communication with the third channel (15). (See FIG. 6) When the ball valve (11) is rotated in one direction (in the direction of the arrow) by 90 degrees from the first state, the ball valve (11) communicates with the first flow path (13) through the one passage hole (12a). The state is switched to the second state in which the third flow path (15) is in communication. At this time, the other passage hole (12b) is
The flow path (13) is not in communication with the second flow path (14). (See FIG. 7) After that, when the first state is rotated by 90 degrees from the second state to the one side, the first passage (13) and the second flow path (13) are connected by the other passage hole (12b).
The first passage (12a) is not in communication with the first passage (13), and the third passage (1) is not in communication with the passage (14).
It will be in a state of communicating with 5). When rotated in the same direction by 90 degrees from the third state, a fourth state in which the first flow path (13) and the third flow path (15) are communicated via the other passage hole (12b). Switch to After that, when it is further rotated by 90 degrees in the same direction, it returns to the first state. In this way, the ball valve (11)
Each time is rotated in the same direction by 90 degrees, the flow path communication state is switched such that the first state → the second state → the third state → the fourth state → the first state.
【００１０】第１流路(13)〜第３流路(15)の態様によっ
ては、流れの方向が異なる場合があるが、何れにして
も、球弁(11)を９０度一方向に回動させる度に流路が切
り替わることとなる。請求項２の発明は、請求項１の発
明において『前記弁室内には、前記球弁(11)の停止位置
にて前記各通過孔の両端の各口部と一致する位置に環状
パッキンを設け、この環状パッキンは前記通過孔の前記
各口部周縁と前記弁室構成壁との間に水密状態に圧入状
態に介在される』ことである。Depending on the mode of the first flow path (13) to the third flow path (15), the flow direction may be different, but in any case, the ball valve (11) is turned in one direction by 90 degrees. Each time it is moved, the flow path is switched. According to the second aspect of the present invention, in the first aspect, "an annular packing is provided in the valve chamber at a position where the ball valve (11) stops at a position coinciding with each opening at both ends of each of the passage holes. The annular packing is interposed in a watertight state between the periphery of each of the mouths of the passage hole and the valve chamber forming wall in a press-fit state.
【００１１】このものでは、４つの環状パッキンによっ
て上記各流路切替状態（第１の状態〜第４の状態のうち
の各状態）での流路間の漏れが確実に防止できる。請求
項３の発明は、『通過孔(12a)(12b)は、その両端の口部
軸線に対して４５度に傾斜する軸線に沿って形成されて
いる』としたものであり、このものでは、小さな球弁(1
1)内に二つの通過孔が合理的に形成され、この部分の通
過抵抗が比較的少なくなる。In this case, the leakage between the flow paths in each of the flow path switching states (each of the first to fourth states) can be reliably prevented by the four annular packings. The invention of claim 3 is that "the through holes (12a) (12b) are formed along an axis inclined at 45 degrees with respect to the axis of the mouth at both ends". , Small ball valve (1
Two passage holes are rationally formed in 1), and the passage resistance in this part is relatively small.
【００１２】この請求項１〜請求項３の発明に於いて、
請求項４の発明のように、『前記球弁(11)を電動機(2)
によって回転駆動する構成とし、前記電動機(2) を流路
を切り替える為の切替信号入力に応答して球弁(11)を９
０度回転駆動させて停止する制御手段を設けた』もので
は、前記切替信号入力の度に前記球弁(11)が９０度回転
して第１の状態（又は第３の状態）と第２の状態（又は
第４の状態）の間で連通状態が切り替わる。[0012] In the invention of claims 1 to 3,
According to the invention of claim 4, "the ball valve (11) is connected to the electric motor (2)
The ball valve (11) is driven in response to a switching signal input for switching the flow path of the electric motor (2).
The control means for rotating and stopping by 0 degrees is provided ”, the ball valve (11) rotates 90 degrees each time the switching signal is input, and the first state (or third state) and the second state The communication state is switched between the states (or the fourth state).
【００１３】従って、流路切替が自動化できる。Therefore, the flow path switching can be automated.
【００１４】[0014]
【発明の効果】請求項１の発明は、球弁(11)を一方向に
９０度回動させて停止させることにより、流路が切り替
わるから、前記球弁(11)の駆動装置又はその駆動機構を
簡素化できる。従って、三方切替弁が安価に製作でき
る。電動切替式の三方弁とした時に電動機(2) として簡
単なものが利用できる。According to the first aspect of the present invention, since the flow path is switched by rotating the ball valve (11) in one direction by 90 degrees and stopping it, the driving device of the ball valve (11) or the driving thereof is driven. The mechanism can be simplified. Therefore, the three-way switching valve can be manufactured at low cost. A simple motor (2) can be used when a three-way valve of an electric switching type is used.
【００１５】請求項２の発明によれば、第１の状態〜第
２の状態のいずれにおいても、球弁(11)によって遮断さ
れるべき流路への漏れが同様な４つの環状パッキンによ
って確実防止できる。従って、前記流路への漏れを防止
する為の構成が簡単である。請求項３の発明によれば、
小さな球弁(11)内に一対の通過孔(12a)(12b)が合理的に
形成できると共に、球弁(11)内での圧力損失が少なくな
る。According to the second aspect of the present invention, in any one of the first state and the second state, leakage into the flow path to be blocked by the ball valve (11) is ensured by the similar four annular packings. Can be prevented. Therefore, the configuration for preventing leakage to the flow path is simple. According to the invention of claim 3,
A pair of passage holes (12a) (12b) can be rationally formed in the small ball valve (11), and the pressure loss in the ball valve (11) is reduced.
【００１６】請求項４の発明は、上記課題を解決した上
で、電動切替式の三方弁とした場合に、制御装置の構成
が簡素化できる。また、電動機(2) は一方に回転するだ
けで良いから、トルクの小さな電動機(2) と減速機構の
組み合わせとすることができ、全体が安価に製作でき
る。According to a fourth aspect of the present invention, in order to solve the above-mentioned problems, the configuration of the control device can be simplified when an electric switching type three-way valve is used. In addition, since the motor (2) only needs to rotate in one direction, a combination of the motor (2) having a small torque and the reduction mechanism can be used, and the whole can be manufactured at low cost.
【００１７】[0017]
【発明の実施の形態】以下、本願発明の実施例の形態
を、図４以下に示す例と共に説明する。この実施の形態
は、本発明を電動弁として実施したものであり、図５に
示す構成の球弁(11)を用い、図４のように構成される。
同図の電動弁において、弁箱(1) 及び電動機(2) は、図
１のものと同様であり、前記球弁(11)と、前記電動機
(2) を制御する制御装置、及び、環状パッキンによるシ
ール構造の点で相違する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. In this embodiment, the present invention is implemented as a motor-operated valve, and is configured as shown in FIG. 4 using a ball valve (11) having the configuration shown in FIG.
In the motor-operated valve shown in the figure, a valve box (1) and a motor (2) are the same as those in FIG. 1, and the ball valve (11) and the motor
(2) It differs in the point of the control device which controls (2), and the seal structure by an annular packing.
【００１８】前記球弁(11)は、図４〜６に示すように、
一対の通過孔(12a)(12b)が仕切り壁(16)を介して対称に
形成された構成であり、通過孔(12a)(12b)の夫々の両端
の口部軸線相互が直交し、この間の流路は、前記口部相
互間に形成される外周壁(17)と前記仕切り壁(16)との間
に前記口部軸線に対して斜め４５度に形成される。な
お、前記両端の口部の何れが入口側となるかは、球弁(1
1)の姿勢によって逆転する。The ball valve (11) is, as shown in FIGS.
A pair of passage holes (12a) (12b) are formed symmetrically via the partition wall (16), and the mouth axes at both ends of each of the passage holes (12a) (12b) are orthogonal to each other. Is formed at an angle of 45 degrees with respect to the axis of the mouth between the outer peripheral wall (17) formed between the mouths and the partition wall (16). It should be noted that which of the mouths on both ends is the inlet side is determined by the ball valve (1
It is reversed by the posture of 1).
【００１９】これら一対の通過孔(12a)(12b)の軸線は同
一平面上に位置するが、前記平面は球弁(11)の回転軸線
と直交する。この実施の形態では、前記球弁(11)の頂部
には、底部が円弧状に屈曲する凹溝(18)が形成されてお
り、この凹溝(18)に前記電動機(2) の出力軸(21)の下端
の板状部がかみ合っており、電動機(2) のトルクが減速
器(G) を介して前記出力軸(21)から球弁(11)に伝達され
ることとなる。The axes of the pair of passage holes (12a) and (12b) are located on the same plane, but the plane is orthogonal to the rotation axis of the ball valve (11). In this embodiment, a concave groove (18) whose bottom is bent in an arc shape is formed at the top of the ball valve (11), and the output shaft of the electric motor (2) is formed in the concave groove (18). The plate-shaped portion at the lower end of (21) is engaged, and the torque of the electric motor (2) is transmitted from the output shaft (21) to the ball valve (11) via the speed reducer (G).
【００２０】なお前記電動機(2) は、前記球弁(11)を収
容する弁箱(1) に取付けられており、この電動機(2)
は、図１に示す従来の電動弁と同様の構成である。前記
弁箱(1) 内に於ける球弁(11)は、弁箱(1) 内の弁室(10)
内に回動自在に収容されているが、図６、図７に示すよ
うに、前記弁室(10)には上記第１流路(13)、第２流路(1
4)及び第３流路(15)が連通し、これらの各口部が前記弁
室(10)の側壁に開口する。この口部の軸線がＴ字状に直
交する。The electric motor (2) is mounted on a valve box (1) containing the ball valve (11).
Has the same configuration as the conventional motor-operated valve shown in FIG. The ball valve (11) in the valve box (1) has a valve chamber (10) in the valve box (1).
As shown in FIGS. 6 and 7, the valve chamber (10) includes the first flow path (13) and the second flow path (1).
4) and the third flow path (15) communicate with each other, and their respective ports are opened to the side wall of the valve chamber (10). The axis of the mouth is orthogonal to the T shape.
【００２１】そして、前記第２流路(14)及び第３流路(1
5)の上流端となる口部が開口する前記側壁と球弁(11)と
の間には、球弁(11)の通過孔(12a)(12b)の一端の口部
と、前記第２流路(14)及び第３流路(15)の前記口部との
連通部分の気密（水密）を確保するための環状パッキン
(3a)(3a)が介在される。また、前記通過孔(12b) の他端
の口部と弁室(10)の側壁との間及び前記通過孔(12a) の
他方の口部と前記第１流路(13)の下流端の口部との間に
は、環状パッキン(3b)(3b)が介在されている。（図８参
照）そして、前記環状パッキン(3a)(3a)は、第２流路(1
4)の雌ネジ部に螺合される筒状の締付けネジ(N1)により
球弁(11)に圧接され、他方の環状パッキン(3b)(3b)は第
１流路(13)の雌ネジ部に螺合される筒状の締付ネジ(N2)
により球弁(11)に圧接される。The second flow path (14) and the third flow path (1
5) between the side wall where the opening serving as the upstream end is opened and the ball valve (11), the opening at one end of the passage hole (12a) (12b) of the ball valve (11), An annular packing for ensuring airtightness (watertightness) of a portion of the flow path (14) and the third flow path (15) communicating with the opening.
(3a) (3a) is interposed. Further, between the mouth of the other end of the passage hole (12b) and the side wall of the valve chamber (10), and between the other mouth of the passage hole (12a) and the downstream end of the first flow path (13). Annular packings (3b) (3b) are interposed between the opening and the mouth. (See FIG. 8) The annular packing (3a) (3a) is connected to the second flow path (1).
4) is pressed against the ball valve (11) by a cylindrical tightening screw (N 1 ) screwed into the female screw portion, and the other annular packing (3b) (3b) Cylindrical tightening screw (N 2 ) to be screwed into the screw part
Is pressed against the ball valve (11).
【００２２】また、前記出力軸(21)には、Ｏリング(22)
(22)が外嵌して弁箱(1) との貫通部の気密又は水密が確
保されている。従って、この第１流路(13)からの流体が
外部に漏れる心配がない。また、前記第１流路(13)と非
連通状態にある第２流路(14)と第３流路(15)の何れかと
の間で漏れが生じることもない。前記電動機(2) はケー
シング(20)内に収容され、同様にこのケーシング(20)内
に設けられる制御装置によって制御される構成となって
いる。この制御装置は、図７に示すような構成であり、
前記出力軸(21)と一体回動するように上下に並設される
一対の円板状のカム板(41)(42)（図４参照）と、前記カ
ム板(41)によってオン−オフされる主スイッチ(4a)と、
前記カム板(42)によってオン−オフされる補助スイッチ
(4b)と、操作スイッチ(40)と、保持用のコンデンサー(4
3)と、補助スイッチ(4b)の回路に挿入された表示ランプ
等の発光表示手段(44)と、からなる回路となっている。An O-ring (22) is connected to the output shaft (21).
(22) is externally fitted to ensure airtightness or watertightness of a penetrating portion with the valve box (1). Therefore, there is no fear that the fluid from the first flow path (13) leaks outside. Also, no leakage occurs between the second flow path (14) and the third flow path (15) that are not in communication with the first flow path (13). The electric motor (2) is housed in a casing (20), and is similarly controlled by a control device provided in the casing (20). This control device is configured as shown in FIG.
A pair of disc-shaped cam plates (41) and (42) (see FIG. 4) which are vertically arranged side by side so as to rotate integrally with the output shaft (21), and are turned on / off by the cam plate (41). Main switch (4a)
Auxiliary switch turned on / off by the cam plate (42)
(4b), operation switch (40), and holding capacitor (4
3) and a light emitting display means (44) such as a display lamp inserted in the circuit of the auxiliary switch (4b).
【００２３】前記カム板(41)は、円板の外周を４等分し
た位置に切欠部(411) が設けられ、前記主スイッチ(4a)
は、そのアクチェータの先端が前記切欠部(411) に一致
すると接点が「オフ」の状態となる形式（常開接点形
式）のものである。前記カム板(42)は、円周を２等分し
た位置に切欠部(421) が形成され、前記補助スイッチ(4
b)は、そのアクチェータの先端部が前記切欠部(421) に
一致すると、接点が「オン」となる形式（常閉接点形
式）であり、この補助スイッチ(4b)が「オン」となる２
つの時点が、前記主スイッチ(4a)が「オフ」となる４つ
の時点の内の２つの時点と一致させている。The cam plate (41) is provided with a notch (411) at a position obtained by dividing the outer circumference of the disk into four equal parts, and the main switch (4a)
Is a type (normally open contact type) in which the contact is turned off when the tip of the actuator coincides with the notch (411). The cam plate (42) is formed with a notch (421) at a position obtained by dividing the circumference into two equal parts, and the auxiliary switch (4
b) is a type in which the contact is turned on (normally closed contact type) when the tip of the actuator coincides with the notch (421), and the auxiliary switch (4b) is turned on.
The two time points coincide with two of the four time points when the main switch (4a) is turned off.
【００２４】従って、球弁(11)が図６の状態にあって、
しかもカム板(41)(42)が図８の状態にあるときを初期状
態とすると、この状態では、主スイッチ(4a)及び補助ス
イッチ(4b)のアクチェータが共に前記切欠部に一致して
おり、主スイッチ(4a)が「オフ」となっているが補助ス
イッチ(4b)が「オン」となっている。そして、この状態
から出力軸(21)が１８０度回転した状態で同様の状態に
なる。Therefore, when the ball valve (11) is in the state shown in FIG.
Further, when the initial state is when the cam plates (41) and (42) are in the state shown in FIG. 8, in this state, the actuators of the main switch (4a) and the auxiliary switch (4b) both coincide with the notches. The main switch (4a) is "OFF", but the auxiliary switch (4b) is "ON". Then, from this state, the same state is obtained when the output shaft (21) is rotated by 180 degrees.
【００２５】この実施の形態のものは、前記初期状態で
は、弁箱(1) 内の流路は、図６の第１の状態にあり、制
御装置のカム板(41)(42)と主スイッチ(4a)および補助ス
イッチ(4b)の関係は、図９の状態にあって、電源スイッ
チ(45)を「オン」にすると、発光表示手段(44)が表示状
態となる。この状態から、流路を切り替えるには、操作
スイッチ(40)を操作する。これにより電動機(2) が動作
して、主スイッチ(4a)が「オン」になり、電動機(2) の
回路が導通したままに維持される。前記操作スイッチ(4
0)は押しボタンスイッチであるから、操作後はその接点
が開成される。一方、主スイッチ(4a)が「オン」となる
までに一定の時間が必要になるが、この間は、電動機
(2) への回路はコンデンサー(43)によって保持された状
態にある。このコンデンサー(43)が放電終了するまで
に、主スイッチ(4a)が「オン」となるから、電動機(2)
の動作が継続される。その後、カム板(41)が前記初期状
態から９０度回転して切欠部(411) と主スイッチ(4a)の
アクチェータの先端とが一致すると、この主スイッチ(4
a)がオフとなり、電動機(2) が停止される。この状態
は、図７に示すように、球弁(11)の通過孔(12a) によっ
て第１流路(13)と第３流路(15)とが連通した第２の状態
である。この状態では、カム板(42)の切欠部(421) と補
助スイッチ(4b)のアクチェータとが一致していないか
ら、発光表示手段(44)は発光しない。これにより、球弁
(11)が第２の状態にあることが判断できる。In this embodiment, in the initial state, the flow path in the valve box (1) is in the first state shown in FIG. 6, and is mainly connected to the cam plates (41) and (42) of the control device. The relationship between the switch (4a) and the auxiliary switch (4b) is in the state shown in FIG. 9, and when the power switch (45) is turned on, the light emitting display means (44) enters the display state. To switch the flow path from this state, the operation switch (40) is operated. As a result, the motor (2) operates, the main switch (4a) is turned on, and the circuit of the motor (2) is kept conductive. The operation switches (4
Since 0) is a push button switch, its contact is opened after operation. On the other hand, a certain period of time is required until the main switch (4a) is turned on.
The circuit to (2) is held by the capacitor (43). By the time the discharge of the condenser (43) is completed, the main switch (4a) is turned on.
Operation is continued. Thereafter, when the cam plate (41) rotates 90 degrees from the initial state and the notch (411) coincides with the tip of the actuator of the main switch (4a), the main switch (4) is turned off.
a) is turned off and the motor (2) is stopped. As shown in FIG. 7, this state is a second state in which the first flow path (13) and the third flow path (15) communicate with each other through the passage hole (12a) of the ball valve (11). In this state, the light emitting display means (44) does not emit light because the notch (421) of the cam plate (42) does not match the actuator of the auxiliary switch (4b). This allows the ball valve
It can be determined that (11) is in the second state.
【００２６】この後、操作スイッチ(40)を操作すると、
上記と同様の動作によって球弁(11)が９０度同方向に回
転されて、球弁(11)の通過孔(12b) を介して第１流路(1
3)と第２流路(14)とが連通した第３の状態となる。この
ときカム板(42)の切欠部(421) が補助スイッチ(4b)のア
クチェータと一致し、この補助スイッチ(4b)が「オン」
となり、発光表示手段(44)が発光状態となる。この発光
によって球弁(11)が第３の状態にあって、第１の状態と
同様に、第１流路(13)と第２流路(14)とが連通し、第１
流路(13)と第３流路(15)とが遮断されていることが判断
できる。Thereafter, when the operation switch (40) is operated,
By the same operation as above, the ball valve (11) is rotated in the same direction by 90 degrees, and the first flow path (1) is passed through the passage hole (12b) of the ball valve (11).
A third state is established in which the third flow path and the second flow path communicate with each other. At this time, the notch (421) of the cam plate (42) matches the actuator of the auxiliary switch (4b), and this auxiliary switch (4b) is turned on.
And the light-emitting display means (44) is in a light-emitting state. By this light emission, the ball valve (11) is in the third state, and similarly to the first state, the first flow path (13) and the second flow path (14) communicate with each other,
It can be determined that the flow path (13) and the third flow path (15) are shut off.
【００２７】もう一度操作スイッチ(40)が操作されると
球弁(11)が同方向に９０度回転されて第１流路(13)と第
３流路(15)とが連通し、第２流路(14)が非連通となった
第４の状態になる。このように、操作スイッチ(40)が操
作される度に、球弁(11)が９０度回転された後に停止し
て弁箱(1) 内の流路が切り替えれられる。When the operation switch (40) is operated again, the ball valve (11) is rotated by 90 degrees in the same direction, and the first flow path (13) and the third flow path (15) communicate with each other. The flow path (14) enters a fourth state in which the flow path is disconnected. In this way, every time the operation switch (40) is operated, the ball valve (11) is stopped after being rotated by 90 degrees and the flow path in the valve box (1) is switched.
【００２８】特に、上記実施の形態では、弁箱(1) 内が
前記第１の状態（又は第２の状態）にあることが、発光
表示手段(44)の発光表示によって外部から判断できるか
ら、使い勝手が良い。上記実施の形態では第１流路(13)
が入口側で第２流路(14)及び第３流路(15)が出口側とな
る構成としたが、第２流路(14)及び第３流路(15)が入口
側で第１流路(13)が出口側であってもよい。In particular, in the above embodiment, the fact that the inside of the valve box (1) is in the first state (or the second state) can be determined from the outside by the light emission display of the light emission display means (44). , Easy to use. In the above embodiment, the first flow path (13)
Is configured such that the second flow path (14) and the third flow path (15) are on the outlet side on the inlet side, but the second flow path (14) and the third flow path (15) are on the inlet side and the first flow path (15) is on the inlet side. The flow path (13) may be on the outlet side.
【図１】従来の電動式の三方弁の断面図FIG. 1 is a cross-sectional view of a conventional electric three-way valve.
【図２】弁箱(1) 内の流路が第１の状態にあるときの断
面図FIG. 2 is a cross-sectional view when a flow path in a valve box (1) is in a first state.
【図３】第２の状態に切替えたときの断面図FIG. 3 is a sectional view when the state is switched to a second state;
【図４】本発明の実施の形態の断面図FIG. 4 is a sectional view of an embodiment of the present invention.
【図５】球弁(11)の斜視図FIG. 5 is a perspective view of a ball valve (11).
【図６】本発明の実施の形態における第１の状態の流路
図FIG. 6 is a flow path diagram in a first state according to the embodiment of the present invention.
【図７】第２の状態に切替えたときの流路図FIG. 7 is a flow chart when switching to the second state.
【図８】球弁(11)と環状パッキン(3a)(3b)との関係を示
す斜視図FIG. 8 is a perspective view showing a relationship between a ball valve (11) and annular packings (3a) (3b).
【図９】制御装置としての電気回路図FIG. 9 is an electric circuit diagram as a control device.
(13)・・・第１流路 (14)・・・第２流路 (15)・・・第３流路 (1) ・・・弁箱 (11)・・・球弁 (12a) ・・・通過孔 (12b) ・・・通過孔 (13) ・ ・ ・ First flow path (14) ・ ・ ・ Second flow path (15) ・ ・ ・ Third flow path (1) ・ ・ ・ Valve box (11) ・ ・ ・ Ball valve (12a) ・..Transmission holes (12b)
Claims (4)
部、及び、第３流路(15)の口部が夫々弁箱(1) 内の弁室
に開口し、これら口部の軸線がＴ字状に直交状態に交差
し、前記弁室に球弁(11)を設け、前記球弁(11)を回動さ
せることにより前記第１、第２、及び、第３流路相互の
連通状態を切り替えるようにした三方弁において、前記
球弁(11)は、一対の通過孔(12a)(12b)が対称に設けら
れ、前記通過孔の両端の口部軸線が相互に直交すると共
に前記口部軸線が前記球弁(11)の回転軸線に対して直交
する構成とした三方弁。An opening of the first flow path (13), an opening of the second flow path (14), and an opening of the third flow path (15) are respectively provided in a valve chamber in the valve box (1). And the axes of these ports intersect at right angles in a T-shape, and a ball valve (11) is provided in the valve chamber, and the first and second valves are rotated by rotating the ball valve (11). In the three-way valve configured to switch the communication state between the third flow path, the ball valve (11) is provided with a pair of passage holes (12a) (12b) symmetrically, the two ends of the passage hole A three-way valve in which the mouth axes are orthogonal to each other and the mouth axis is orthogonal to the rotation axis of the ball valve (11).
置にて前記各通過孔の両端の各口部と一致する位置に環
状パッキンを設け、この環状パッキンは前記通過孔の前
記各口部周縁と前記弁室構成壁との間に水密状態に圧入
状態に介在される請求項１に記載の三方弁。2. An annular packing is provided in the valve chamber at a position where the ball valve (11) stops at a position coinciding with each opening at both ends of each of the passage holes. 2. The three-way valve according to claim 1, wherein the three-way valve is interposed in a water-tight state and press-fitted between the peripheral edge of each port and the valve chamber forming wall. 3.
に対して４５度に傾斜する軸線に沿って形成されてい
る、請求項１又は２に記載の三方弁。3. The three-way valve according to claim 1, wherein the passage holes (12a) and (12b) are formed along an axis inclined at 45 degrees with respect to the mouth axis at both ends.
駆動する構成とし、前記電動機(2) の流路を切り替える
為の切替信号入力に応答して球弁(11)を９０度回転駆動
させて停止する制御手段を設けた請求項１から請求項３
までの何れかに記載の三方弁。4. A configuration in which the ball valve (11) is rotatably driven by an electric motor (2), and the ball valve (11) is turned by 90 degrees in response to a switching signal input for switching a flow path of the electric motor (2). 4. The control device according to claim 1, further comprising control means for rotating and stopping.
The three-way valve according to any of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21988596A JPH1061796A (en) | 1996-08-21 | 1996-08-21 | Three-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21988596A JPH1061796A (en) | 1996-08-21 | 1996-08-21 | Three-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1061796A true JPH1061796A (en) | 1998-03-06 |
Family
ID=16742584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21988596A Pending JPH1061796A (en) | 1996-08-21 | 1996-08-21 | Three-way valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1061796A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007132470A (en) * | 2005-11-11 | 2007-05-31 | Kokoku Kiko Kk | Ball valve and gas-liquid transportation equipment using the ball valve |
-
1996
- 1996-08-21 JP JP21988596A patent/JPH1061796A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007132470A (en) * | 2005-11-11 | 2007-05-31 | Kokoku Kiko Kk | Ball valve and gas-liquid transportation equipment using the ball valve |
| JP4728101B2 (en) * | 2005-11-11 | 2011-07-20 | 興國機工株式会社 | Gas-liquid transport device |
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