JP5572398B2

JP5572398B2 - Multi-way switching valve and manufacturing / assembling method thereof

Info

Publication number: JP5572398B2
Application number: JP2010002096A
Authority: JP
Inventors: 猛神尾
Original assignee: Fujikoki Corp
Current assignee: Fujikoki Corp
Priority date: 2010-01-07
Filing date: 2010-01-07
Publication date: 2014-08-13
Anticipated expiration: 2030-01-07
Also published as: JP2011140986A

Description

本発明は、一個の流入口と複数個の流出口とを有する、三方切換弁や四方切換弁等の多方切換弁に係り、特に、弁体を弁シート部材に接触させながら回動あるいはスライドさせることにより流路の切り換えを行なう多方切換弁及びその製造組立方法に関する。 The present invention relates to a multi-way switching valve such as a three-way switching valve or a four-way switching valve having a single inlet and a plurality of outlets, and in particular, the valve body is rotated or slid while being in contact with a valve seat member. The present invention relates to a multi-way switching valve for switching a flow path and a method for manufacturing and assembling the same.

多方切換弁として、複数個の流出口が形成された弁シート部を有する弁本体と、前記弁シート部に接触しながら回動あるいはスライドせしめられる弁体と、該弁体を駆動するアクチュエータとを備え、前記弁本体もしくは前記弁体に流入口が形成されるとともに、前記弁体内に、前記流入口と前記複数個の流出口とを選択的に連通させるための通路部が設けられ、前記アクチュエータにより前記弁体を回動あるいはスライドさせて、前記流入口と前記複数個の流出口とを前記弁体内通路部を介して選択的に連通させることにより、流路の切り換えを行なうようにしたものが考えられている。 As a multi-way switching valve, a valve body having a valve seat portion in which a plurality of outlets are formed, a valve body that is rotated or slid while being in contact with the valve seat portion, and an actuator that drives the valve body An inflow port is formed in the valve body or the valve body, and a passage portion for selectively communicating the inflow port with the plurality of outflow ports is provided in the valve body, and the actuator The flow path is switched by selectively communicating the inflow port and the plurality of outflow ports through the valve body passage portion by rotating or sliding the valve body by Is considered.

また、前記の如き多方切換弁ではないが、電磁弁の流出口と接続先との間に流量絞り具を配置した例としては、下記特許文献１（例えば図１参照）や特許文献２（例えば［０００６］参照）があげられる。 Moreover, although it is not a multiway switching valve as mentioned above, as an example which has arrange | positioned the flow restrictor between the outflow port of a solenoid valve, and a connecting point, the following patent documents 1 (for example, refer FIG. 1) and patent documents 2 (for example, [0006]).

特開平７−１９３６４号公報JP 7-19364 A 特許第３６６１９８７号公報Japanese Patent No. 3661987

前記した如くの従前の多方切換弁では、例えば、流入口の口径と流出口の口径とは略同じに設定されており、また弁体内通路部の断面積も流入口及び流出口のそれと略同じに設定されているので、流入口→弁体内通路部→流出口→外部導管へと導出される流体はほとんど絞られない。言い換えれば、従来の多方切換弁は、その名の通り、流路切換機能のみを有し、流量絞り機能は実質的に有さないものであった。 In the conventional multi-way switching valve as described above, for example, the diameter of the inflow port and the diameter of the outflow port are set to be substantially the same, and the cross-sectional area of the passage in the valve body is substantially the same as that of the inflow port and the outflow port. Therefore, the fluid led out to the inlet, the valve body passage, the outlet, and the external conduit is hardly restricted. In other words, as the name suggests, the conventional multi-way switching valve has only the flow path switching function and substantially does not have the flow restrictor function.

ところが、多方切換弁を使用する環境如何によっては、例えば、切換弁の一つの流出口の接続先では流量を絞る必要はないが、他の流出口の接続先では流量を絞ることが要求される場合がある。かかる場合、他の流出口と接続先との間に別途に流量絞り具を介装せねばならず、配管・設置コスト等が嵩むことになる。 However, depending on the environment in which the multi-way switching valve is used, for example, it is not necessary to reduce the flow rate at the connection destination of one outlet of the switching valve, but it is required to reduce the flow rate at the connection destination of the other outlet. There is a case. In such a case, a flow restrictor must be additionally provided between the other outlet and the connection destination, resulting in increased piping and installation costs.

このような観点から、多方切換弁に流量絞り機能を持たせること、具体的には、流出口の口径を流入口の口径より小さくしたり、あるいは前記弁体内通路部に前記流出口及び流入口よりも断面積の小さい絞り部分を形成することが考えられる。しかしこの場合においても、接続先において要求される流量絞り度合いは様々であるので、該要求に合わせて流出口、又は前記絞り部分の口径や断面積（絞り度合い）が異なる多種類の多方切換弁を生産することが必要となる。 From such a point of view, the multi-way switching valve is provided with a flow restricting function, specifically, the diameter of the outlet is made smaller than the diameter of the inlet, or the outlet and the inlet are provided in the passage in the valve body. It is conceivable to form a throttle portion having a smaller cross-sectional area. However, even in this case, since the degree of flow restriction required at the connection destination is various, various kinds of multi-way switching valves in which the outlet or the diameter or the cross-sectional area (throttle degree) of the throttle portion are different according to the request. It will be necessary to produce.

本発明は、前記した如くの事情に鑑みてなされたもので、その目的とするところは、少なくとも１個の流出口に所要の流量絞り機能が付加され、かつ、流出口の口径の設定変更を容易ならしめることのできる多方切換弁、及び、流出口の口径が異なる複数種の多方切換弁を合理的かつ経済的に製作することのできる製造組立方法を提供することにある。 The present invention has been made in view of the circumstances as described above. The object of the present invention is to add a required flow restriction function to at least one outlet and to change the setting of the outlet diameter. An object of the present invention is to provide a manufacturing and assembling method capable of rationally and economically manufacturing a multi-way switching valve that can be easily adjusted and a plurality of types of multi-way switching valves having different outlet diameters.

前記目的を達成すべく、本発明に係る多方切換弁は、弁シート部を有すると共に流入口と複数個の流路が形成される弁本体と、前記弁シート部内に配置されると共に前記複数個の流路に連通する複数の流出口を有する弁シート部材と、前記弁シート部材に接触すると共に前記流入口と連通する通路部とを有する弁体と、該弁体を駆動するアクチュエータとを備え、該アクチュエータにより前記弁体を移動させて、前記弁シート部材の前記流出口と前記弁体の前記通路部とを介して、前記流入口と前記弁本体の複数個の前記流路とを選択的に連通させることにより流路の切り換えを行なう多方切換弁であって、前記弁シート部に配置される前記弁シート部材は、前記弁本体とは別体であり、前記弁本体の前記弁シート部には、前記流出口の口径のみが異なる複数の前記弁シート部材を選択的に取付固定可能な形状寸法に、弁シート部材取付部が形成されており、前記弁本体は、気密的に締結固定される上側箱状体と下側蓋状体とからなり、該上側箱状体と下側蓋状体との間に前記弁体を配置する流路切換室が画成されるとともに、該流路切換室の天井面部が前記弁シート部材が選択的に取付固定される前記弁シート部材取付部とされており、前記弁シート部材に形成される複数の前記流出口のうちの少なくとも一つに絞り機能が設けられたことを特徴としている。 To achieve the above object, the plurality pieces with multi-way selector valve according to the invention includes a valve body inlet and a plurality of flow paths is formed with a valve seat is disposed within the valve seat A valve seat member having a plurality of outlets communicating with the flow path, a valve body having a passage portion that contacts the valve seat member and communicates with the inlet port, and an actuator that drives the valve body. The valve body is moved by the actuator, and the inflow port and the plurality of flow paths of the valve body are selected via the outflow port of the valve seat member and the passage portion of the valve body. The multi-way switching valve is configured to switch the flow path by communicating with each other, wherein the valve seat member disposed in the valve seat portion is separate from the valve body, and the valve seat of the valve body In the part, the diameter of the outlet The valve seat member mounting portion is formed in a shape and dimension capable of selectively mounting and fixing a plurality of valve seat members having different cavities, and the valve body includes an upper box-like body that is fastened and fixed in an airtight manner, and a lower And a flow path switching chamber in which the valve body is disposed between the upper box-shaped body and the lower lid-shaped body, and the ceiling surface portion of the flow path switching chamber is It is with the valve seat member mounting portion in which the valve seat member is selectively mounted and fixed, that at least one the diaphragm Ri functions of a plurality of said outlet disposed at said valve seat member is provided It is characterized by.

本発明に係る多方切換弁の他の態様は、弁シート部を有すると共に流入口と複数個の流路が形成される弁本体と、前記弁シート部内に配置されると共に前記複数個の流路に連通する複数の流出口を有する弁シート部材と、前記弁シート部材に接触すると共に前記流入口と連通する通路部とを有する弁体と、該弁体を駆動するアクチュエータとを備え、該アクチュエータにより前記弁体を移動させて、前記弁シート部材の前記流出口と前記弁体の前記通路部とを介して、前記流入口と前記弁本体の複数個の前記流路とを選択的に連通させることにより流路の切り換えを行なう多方切換弁であって、前記弁シート部に配置される前記弁シート部材は、前記弁本体とは別体であり、前記弁本体の前記弁シート部には、前記流出口の口径のみが異なる複数の前記弁シート部材を選択的に取付固定可能な形状寸法に、弁シート部材取付部が形成されており、前記弁本体は、気密的に締結固定される上側箱状体と下側蓋状体とからなり、該上側箱状体と下側蓋状体との間に前記弁体を配置する流路切換室が画成されるとともに、該流路切換室の天井面部が前記弁シート部材が選択的に取付固定される前記弁シート部材取付部とされており、前記弁シート部材に形成される複数の前記流出口のうちの少なくとも一つが、その流出口が前記流入口と連通された際の流体通路における最小流路断面積を有するように形成されたことを特徴としている。 Another aspect of the multi-way switching valve according to the present invention includes a valve main body having a valve seat portion and having an inlet and a plurality of flow paths, and a plurality of flow paths that are disposed in the valve seat portion. A valve seat member having a plurality of outlets communicating with the valve seat member, a valve body having a passage portion that contacts the valve seat member and communicates with the inlet port, and an actuator that drives the valve body. The valve body is moved by the above, and the inflow port and the plurality of flow paths of the valve body are selectively communicated via the outflow port of the valve seat member and the passage portion of the valve body. A multi-way switching valve for switching the flow path, wherein the valve seat member disposed in the valve seat portion is separate from the valve body, and the valve seat portion of the valve body , Only the diameter of the outlet is different A valve seat member mounting portion is formed in a shape and size capable of selectively mounting and fixing a number of the valve seat members, and the valve body is formed of an upper box-like body and a lower lid shape that are hermetically fastened and fixed. A flow path switching chamber in which the valve body is disposed between the upper box-shaped body and the lower lid-shaped body, and a ceiling surface portion of the flow path switching chamber is the valve seat member. The valve seat member mounting portion is selectively mounted and fixed, and at least one of the plurality of outlets formed in the valve seat member has the outlet communicated with the inlet. It is characterized in that it is formed to have a minimum flow path cross-sectional area in the fluid passage .

更に、本発明の多方切換弁の製造組立方法は、前記弁シート部材取付部が形成された前記弁本体の複数個の前記上側箱状体と、前記弁本体の複数個の前記下側蓋状体と、複数個の前記弁体と、前記複数の流出口のうちの少なくとも一つの口径が異なる複数種の弁シート部材と、を各々製造する製造工程、及び、前記異なる複数種の弁シート部材の内の一つの弁シート部材を選択して前記上側箱状体の前記弁シート部材取付部に取付固定し、その後、前記弁体を前記上側箱状体の前記流路切換室に装着配置し、更に、前記下側蓋状体を前記上側箱状体に装着して気密的に締結固定して組立する組立工程、を含むことを特徴としている。 Furthermore, manufacturing method of assembling a multi-way selector valve of the present invention, before a plurality of the upper box-like body of said valve body Kiben seat member mounting portion is formed, a plurality of the lower side of the front Kiben body A manufacturing process for manufacturing a lid-like body, a plurality of valve bodies, and a plurality of types of valve seat members having different diameters among at least one of the plurality of outlets, and the different types of valves One valve seat member of the seat members is selected and fixed to the valve seat member mounting portion of the upper box-shaped body, and then the valve body is mounted in the flow path switching chamber of the upper box-shaped body And an assembly step of attaching the lower lid-like body to the upper box-like body and hermetically fastening and fixing the assembly.

本発明に係る多方切換弁は、弁シート部材に形成される流出口の少なくとも一つに絞り機能を設けたので、所要の流量絞り機能を簡単な構造で当該多方切換弁に付加することができ、また、弁シート部材が弁本体とは別体に製造されて後工程で弁本体に組み付けられるようにされているので、流出口の口径の設定変更を容易ならしめることができる。 The multi-way switching valve according to the present invention has a throttling function provided to at least one of the outlets formed in the valve seat member. Therefore, the required flow throttling function can be added to the multi-way switching valve with a simple structure. Moreover, since the valve seat member is manufactured separately from the valve main body and assembled to the valve main body in a later process, it is possible to easily change the setting of the outlet diameter.

さらに、弁シート部材は、弁本体とは別体に製造された後、組立工程で弁本体の弁シート部材取付部に取付固定されることから、流出口の口径が異なる複数種の多方切換弁を生産する場合には、弁シート部材のみを別途に製造し、弁本体、弁体、アクチュエータ等は共通部品として使用することができる。 Furthermore, after the valve seat member is manufactured separately from the valve body, it is mounted and fixed to the valve seat member mounting portion of the valve body in the assembly process, so that a plurality of types of multi-way switching valves having different outlet diameters. Can be produced separately, only the valve seat member is manufactured separately, and the valve body, the valve body, the actuator, etc. can be used as common parts.

そのため、本発明に係る多方切換弁の製造組立方法によれば、流出口の口径が異なる複数種の多方切換弁を合理的かつ経済的に製作することができ、その結果、生産性が向上し、所要の流量絞り機能を有する多方切換弁を低コストで提供することができる。 Therefore, according to the manufacturing and assembling method of the multi-way switching valve according to the present invention, it is possible to rationally and economically manufacture a plurality of types of multi-way switching valves having different outlet diameters, thereby improving productivity. Therefore, it is possible to provide a multi-way switching valve having a required flow restricting function at a low cost.

本発明に係る多方切換弁の一実施例を示す縦断面図。The longitudinal cross-sectional view which shows one Example of the multiway switching valve which concerns on this invention. 図１のＸ−Ｘ矢視線に従う動作説明用概略図。Schematic for operation | movement description which follows the XX arrow line of FIG.

以下、本発明の多方切換弁の実施形態を図面を参照しながら説明する。
図１は、本発明に係る多方切換弁の一実施例を示す縦断面図、図２は、図１のＸ−Ｘ矢視線に従う動作説明用概略図である。 Hereinafter, embodiments of the multi-way selector valve of the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing an embodiment of a multi-way switching valve according to the present invention, and FIG. 2 is a schematic diagram for explaining an operation according to the line XX in FIG.

図示の多方切換弁１は、１個の流入口と３個の流出口とを有する、冷凍サイクル等に用いられるロータリー式の三方切換弁であり、キャン３８の内周側に配在されたロータ１６とキャン３８の外周に外嵌固定されたステータ１７とからなる流路切換用アクチュエータとしてのステッピングモータ１５と、該ステッピングモータ１５により回動せしめられる弁体５０と、この弁体５０を回動可能に保持する、上側箱状体６０Ａと下側蓋状体６０Ｂとからなる分割組付構造の弁本体６０と、該弁本体６０とは別体の弁シート部材６５とを備えている。なお、前記上側箱状体６０Ａと下側蓋状体６０Ｂとは３本のボルト９３により気密的に締結されている。また、前記モータ１５のロータ１６と弁体５０との間に、遊星歯車式減速機構４０が介装されており、ロータ１６の回転は相当減速されて弁体５０に伝達されるようになっている。 The illustrated multi-way switching valve 1 is a rotary three-way switching valve for use in a refrigeration cycle or the like having one inlet and three outlets, and a rotor disposed on the inner peripheral side of the can 38. 16 and a stator 17 externally fitted and fixed to the outer periphery of the can 38, a stepping motor 15 as a flow path switching actuator, a valve body 50 rotated by the stepping motor 15, and a rotation of the valve body 50 A valve body 60 having a split assembly structure composed of an upper box-like body 60A and a lower lid-like body 60B, and a valve seat member 65, which is separate from the valve body 60, are provided. The upper box-shaped body 60A and the lower lid-shaped body 60B are airtightly fastened by three bolts 93. Further, a planetary gear speed reduction mechanism 40 is interposed between the rotor 16 of the motor 15 and the valve body 50, and the rotation of the rotor 16 is considerably reduced and transmitted to the valve body 50. Yes.

前記キャン３８の下端は下部マウント部材４７に溶接等により取り付けられており、この下部マウント部材４７が上側箱状体６０Ａの挿通穴６６に形成されためねじ部６６ａに螺合されることにより、ステッピングモータ１５が弁本体６０に取り付けられている。 The lower end of the can 38 is attached to the lower mount member 47 by welding or the like. Since the lower mount member 47 is formed in the insertion hole 66 of the upper box-like body 60A, it is screwed into the threaded portion 66a. A motor 15 is attached to the valve body 60.

前記弁本体６０を構成する上側箱状体６０Ａと下側蓋状体６０Ｂとの間には流路切換室６１が画成されるとともに、この流路切換室６１の天井面部（上側箱状体６０Ａの中央よりやや上側）が前記弁シート部材６５が取付固定される弁シート部材取付部６０ａとなっている。この弁シート部材取付部６０ａは、外形や厚み寸法が同じで後述する流出口１２、１３、１４の口径のみが異なる複数種の弁シート部材を取付固定可能とされ、弁シート部材６５は弁シート部材取付部６０ａに例えばビス止め、ろう付け、圧入等の手法で固定される。また、下側蓋状体６０Ｂの中央（回転軸線Ｏ上）には、流入口１１が設けられている。 A flow path switching chamber 61 is defined between the upper box-shaped body 60A and the lower lid-shaped body 60B constituting the valve body 60, and a ceiling surface portion (upper box-shaped body of the flow path switching chamber 61 is formed. The valve seat member attaching portion 60a to which the valve seat member 65 is attached and fixed is slightly above the center of 60A. The valve seat member mounting portion 60a is capable of mounting and fixing a plurality of types of valve seat members having the same outer shape and thickness dimensions and different only the diameters of outlets 12, 13, and 14 to be described later. The valve seat member 65 is a valve seat. For example, it is fixed to the member mounting portion 60a by a method such as screwing, brazing, or press fitting. An inflow port 11 is provided at the center (on the rotation axis O) of the lower lid-like body 60B.

前記弁本体６０の上側箱状体６０Ａには、各流出口１２、１３、１４に連なる、周側部に開口する接続口（継手）を持つ逆Ｌ形通路部６２、６３、６４が形成されている。 The upper box-shaped body 60A of the valve body 60 is formed with inverted L-shaped passage portions 62, 63, 64 having connection ports (joints) that open to the peripheral side portions, which are continuous with the respective outlets 12, 13, and 14. ing.

前記弁体５０は、上から順に、前記モータ１５内の遊星歯車式減速機構４０の出力軸に連結された小径軸部５１、中央軸部５２、及び逆Ｌ形軸部５３からなり、逆Ｌ形軸部５３内には、流入口１１からの流体を前記流出口１２、１３、１４に選択的に導くための逆Ｌ形ないしクランク状の軸内通路部（弁体内通路部）５５が形成されている。軸内通路部５５は、流入口１１側の通路部５５Ａと弁シート部材６５側（流出口１２、１３、１４側）の通路部５５Ｂとからなり、前記通路部５５Ａと通路部５５Ｂとの境界部５５Ｓは、後述する流出口１３、１４を除き、当該多方切換弁内に形成される流体通路の最小流量通過部（最小流路断面積部）となっている。 The valve body 50 includes, in order from the top, a small-diameter shaft portion 51, a central shaft portion 52, and a reverse L-shaped shaft portion 53 that are connected to the output shaft of the planetary gear speed reduction mechanism 40 in the motor 15. An inverted L-shaped or crank-shaped in-axis passage portion (valve passage portion) 55 for selectively introducing fluid from the inflow port 11 to the outflow ports 12, 13, 14 is formed in the shape shaft portion 53. Has been. The in-shaft passage portion 55 includes a passage portion 55A on the inlet 11 side and a passage portion 55B on the valve seat member 65 side (outlet ports 12, 13, and 14 side), and a boundary between the passage portion 55A and the passage portion 55B. The portion 55S is a minimum flow rate passage portion (minimum flow passage cross-sectional area portion) of the fluid passage formed in the multi-way switching valve except for the outlets 13 and 14 described later.

前記通路部５５Ｂの出口側端部には、弁シート部材６５に気密的に圧接するように、シール材としてのＯリング７４と角形リング７５とが装着されている。 An O-ring 74 and a square ring 75 as a sealing material are attached to the outlet side end portion of the passage portion 55B so as to be in airtight pressure contact with the valve seat member 65.

なお、軽量化等を図るため、弁本体６０の材料にはアルミニウムが採用され、また、弁シート部材６５の材料には、摺動摩擦抵抗が小さく、耐摩耗性にも優れるステンレス鋼板、あるいは高強度合成樹脂板の表面にテフロンを含浸被覆させたもの等が使用されている。 In order to reduce the weight, aluminum is adopted as the material of the valve body 60, and the material of the valve seat member 65 is a stainless steel plate having a low sliding friction resistance and excellent wear resistance, or a high strength. A synthetic resin plate whose surface is impregnated with Teflon is used.

前記弁体の中央軸部５２及び下端部５４は、それぞれ上側箱状体６０Ａの挿通穴６７に配置されたスリーブ状の軸受部材８１、及び下側蓋状部材６０Ｂの挿通穴６８の径大部に配置されたスリーブ状の軸受部材８２により、回動自在に支持されている。また前記通路部５５Ｂを画成する横辺部５３Ｂの下面と下側蓋状体６０Ｂとの間にはコイルばね９２が縮装されており、これにより弁体５０は上向きに付勢されている。 The central shaft portion 52 and the lower end portion 54 of the valve body are large-diameter portions of a sleeve-like bearing member 81 disposed in the insertion hole 67 of the upper box-like body 60A and the insertion hole 68 of the lower lid-like member 60B, respectively. It is rotatably supported by a sleeve-shaped bearing member 82 arranged in the position. Further, a coil spring 92 is mounted between the lower surface of the lateral side portion 53B defining the passage portion 55B and the lower lid-like body 60B, whereby the valve body 50 is urged upward. .

前記弁シート部材６５には、流出口１２、１３、１４が回動軸線を中心として６０°間隔（図２参照）で設けられている。ここでは、流入口１１Ｄａの口径と軸内通路部５５の出口側端部５５ｕの実効通路径Ｄｕ（角形リング７５の略内径に相当する）と流出口１２の口径Ｄｂとは略同じに設定されている。すなわち、前記流入口１１、出口側端部５５ｕ及び流出口１２の断面積は、前記した最小流量通過部である境界部５５Ｓの断面積よりも大きく設定されている。 The valve seat member 65 is provided with outlets 12, 13, and 14 at intervals of 60 ° (see FIG. 2) with the rotation axis as the center. Here, the diameter of the inlet 11Da, the effective passage diameter Du (corresponding to the substantially inner diameter of the square ring 75) of the outlet side end 55u of the in-shaft passage portion 55, and the diameter Db of the outlet 12 are set to be substantially the same. ing. That is, the cross-sectional areas of the inlet 11, the outlet-side end 55u, and the outlet 12 are set to be larger than the cross-sectional area of the boundary portion 55S that is the minimum flow rate passing portion.

一方、前記境界部５５Ｓの断面が円であるとすると、前記流出口１３の口径Ｄｃは前記境界部５５Ｓの口径Ｄｓよりも幾分小さくされ、前記流出口１４の口径Ｄｄは前記境界部５５Ｓの口径Ｄｓよりも相当小さくされている。言い換えれば（前記境界部５５Ｓの断面が円でない場合において理解しやすく述べれば）、前記流出口１３の断面積は、前記境界部５５Ｓの断面積より幾分小さくされ、前記流出口１４の断面積は、前記境界部５５Ｓの断面積より相当小さくされている。 On the other hand, if the cross section of the boundary portion 55S is a circle, the diameter Dc of the outlet 13 is made somewhat smaller than the diameter Ds of the boundary 55S, and the diameter Dd of the outlet 14 is smaller than that of the boundary 55S. It is considerably smaller than the aperture Ds. In other words (if it is easy to understand when the cross section of the boundary portion 55S is not a circle), the cross sectional area of the outlet 13 is somewhat smaller than the cross sectional area of the boundary 55S, and the cross sectional area of the outlet 14 is Is considerably smaller than the cross-sectional area of the boundary portion 55S.

かかる構成を有する多方切換弁１では、弁体５０がステッピングモータ１５により回動せしめられると、軸内通路部５５の出口側端部５５ｕ（角形リング７５）が弁シート部材６５の下面を摺動し、弁体５０が図２（Ａ）に示される位置に回動されると、流入口１１と流出口１２とが軸内通路部５５を介して連通し、流入口１１からの流体は流出口１２で絞られることなく流される。 In the multi-way switching valve 1 having such a configuration, when the valve body 50 is rotated by the stepping motor 15, the outlet side end portion 55 u (square ring 75) of the in-shaft passage portion 55 slides on the lower surface of the valve seat member 65. When the valve body 50 is rotated to the position shown in FIG. 2A, the inflow port 11 and the outflow port 12 communicate with each other via the in-axis passage portion 55, and the fluid from the inflow port 11 flows. It flows without being squeezed at the outlet 12.

また、弁体５０が図２（Ｂ）に示される位置に回動されると、流入口１１と流出口１３とが軸内通路部５５を介して連通し、流入口１１からの流体は流出口１３で幾分絞られて流され、同様に、弁体５０が図２（Ｃ）に示される位置に回動されると、流入口１１と流出口１４とが軸内通路部５５を介して連通し、流入口１１からの流体は流出口１４で相当絞られて流される。 When the valve body 50 is rotated to the position shown in FIG. 2B, the inflow port 11 and the outflow port 13 communicate with each other via the in-axis passage portion 55, and the fluid from the inflow port 11 flows. When the valve body 50 is rotated to the position shown in FIG. 2C, the inflow port 11 and the outflow port 14 are connected via the in-shaft passage portion 55. The fluid from the inflow port 11 is made to flow considerably narrowed at the outflow port 14.

このように、本実施形態の多方切換弁１においては、流出口１３、１４の断面積が前記境界部５５Ｓの断面積より小さくされているので、弁体５０の動作により流出口１３又は流出口１４と流入口１１とが連通された場合における当該多方切換弁内部の流体通路の最小流路断面積部分が、前記境界部５５Ｓから前記流出口１３又は流出口１４と変わり、この結果、流出口１３又は流出口１４に所要の流量絞り機能を付加することができる。 As described above, in the multi-way selector valve 1 of the present embodiment, the cross-sectional area of the outlets 13 and 14 is smaller than the cross-sectional area of the boundary portion 55S. 14 and the inlet 11 communicate with each other, the minimum channel cross-sectional area portion of the fluid passage inside the multi-way switching valve changes from the boundary portion 55S to the outlet 13 or the outlet 14, and as a result, the outlet A required flow restricting function can be added to 13 or the outlet 14.

また、弁シート部材６５は、弁本体６０とは別体に製作された後、組立工程で弁本体６０のシート取付部６０ａに取付固定されるようになされているので、流出口１２、１３、１４の口径の設定変更を容易ならしめることができる。 Further, since the valve seat member 65 is manufactured separately from the valve main body 60, and is fixedly attached to the seat mounting portion 60a of the valve main body 60 in the assembly process, the outlets 12, 13, 14 can be easily changed.

また、弁シート部材６５が弁本体６０とは別体に製作された後の組立工程で弁本体６０に組み付けられるようにされていることから、外形寸法が同じで流出口１２、１３、１４の口径Ｄｂ、Ｄｃ、Ｄｄが上記した例とは異なる多方切換弁（例えば、流出口１２、１３、１４の口径Ｄｂ、Ｄｃ、Ｄｄが上記した例よりそれぞれ２０％ずつ小さいもの）を生産する場合には、弁シート部材６５のみを別途に製作し（流出口１２、１３、１４の形成に使う工具類の寸法が異なるだけである）、上記実施形態で使用されている弁本体６０、弁体５０、モータ１５等はそのまま共通部品として使用することができる。 Further, since the valve seat member 65 is assembled to the valve body 60 in an assembly process after being manufactured separately from the valve body 60, the outer dimensions are the same and the outlets 12, 13, and 14 are the same. When producing multi-way switching valves with different diameters Db, Dc, Dd from the above example (for example, the diameters Db, Dc, Dd of the outlets 12, 13, 14 are each 20% smaller than the above example) Only the valve seat member 65 is separately manufactured (only the dimensions of tools used for forming the outlets 12, 13, and 14 are different), and the valve body 60 and the valve body 50 used in the above embodiment are used. The motor 15 and the like can be used as common parts as they are.

したがって、外形寸法が同じで流出口の口径のみが異なる複数種（例えば３種）の多方切換弁を生産する場合には、各多方切換弁に共通の、前記シート取付部６０ａが設けられた弁本体６０、弁体５０、モータ１５等を製造もしくは用意する工程と、複数個の流出口１２、１３、１４のうちの少なくとも一つの口径が異なる３種の弁シート部材６５、６５’、６５’’をそれぞれ製造する工程と、各弁シート部材６５、６５’、６５’’を前記共通の弁本体６０のシート取付部６０ａにそれぞれ取付固定する前組立工程と、弁シート部材６５、６５’、６５’’が取付固定された弁本体６０、弁体５０、モータ１５等を組み上げる後組立工程と、を含むことになる。 Therefore, in the case of producing a plurality of types (for example, three types) of multi-way switching valves having the same outer dimensions but different only in the diameter of the outlet, the valve provided with the seat mounting portion 60a common to each multi-way switching valve. The process of manufacturing or preparing the main body 60, the valve body 50, the motor 15 and the like, and three types of valve seat members 65, 65 ′, 65 ′ having different diameters from at least one of the plurality of outlets 12, 13, 14 Each of the valve seat members 65, 65 ′, 65 ″ are attached and fixed to the seat mounting portion 60a of the common valve body 60, and the valve seat members 65, 65 ′, And a post-assembly process for assembling the valve body 60, the valve body 50, the motor 15 and the like to which 65 ″ is attached and fixed.

このようにされることにより、多方切換弁と別個に絞り装置を設けることなく、また流出口の口径が異なる複数種の多方切換弁を合理的かつ経済的に製作することができ、その結果、生産性が向上し、所要の流量絞り機能を有する多方切換弁を低コストで提供することができる。 By doing so, it is possible to rationally and economically produce a plurality of types of multi-way switching valves having different outlet diameters without providing a throttle device separately from the multi-way switching valve. Productivity is improved, and a multi-way selector valve having a required flow restricting function can be provided at low cost.

なお、上記実施例では、軸内通路部５５内の境界部５５Ｓが、流出口１３、１４を除き、当該多方切換弁内に形成される流体通路の最小流量通過部となっているものとして説明したが、流出口以外の流路はすべての部分において同一の断面積であっても良い。 In the above embodiment, the boundary portion 55S in the in-shaft passage portion 55 is described as the minimum flow rate passage portion of the fluid passage formed in the multi-way switching valve except for the outflow ports 13 and 14. However, the flow path other than the outflow port may have the same cross-sectional area in all parts.

また、上記実施例では、流出口の個数が３個の四方切換弁において、その弁シート部材に形成される３つの流出口のうちの２つに絞り機能を設けるものとして説明したが、弁シート部材に形成される流出口のうちの少なくとも一つに絞り機能が設けられれば良い。 In the above embodiment, the four-way switching valve having three outlets has been described as having a throttling function in two of the three outlets formed in the valve seat member. It suffices that at least one of the outlets formed in the member is provided with a throttling function.

さらにまた、上記実施例では、四方切換弁が例示されているが、本発明の多方切換弁はこれに限られるわけではなく、流出口の個数が２個の三方切換弁でも４個以上の多方切換弁でも本発明を適用できることは勿論であり、また、多方切換弁としてロータリー式のものを例にとって説明したが、本発明はスライド式の多方切換弁にも同様に適用できる。 Furthermore, in the above embodiment, a four-way switching valve is illustrated, but the multi-way switching valve of the present invention is not limited to this, and a three-way switching valve having two outlets has four or more multi-way switching valves. Of course, the present invention can also be applied to a switching valve, and the rotary type has been described as an example of the multi-way switching valve. However, the present invention can be similarly applied to a sliding multi-way switching valve.

１多方切換弁（四方切換弁）
１１流入口
１２流出口
１３流出口（絞り機能）
１４流出口（絞り機能）
１５モータ（アクチュエータ）
５０弁体
５５軸内通路部
５５Ｓ境界部（最小流量通過部）
６０弁本体
６０Ａ上側箱状体
６０Ｂ下側蓋状体
６０ａ弁シート部材取付部
６１流路切換室
６５弁シート部材 1 Multi-way switching valve (4-way switching valve)
11 Inlet 12 Outlet 13 Outlet (throttle function)
14 Outlet (throttle function)
15 Motor (actuator)
50 Valve body 55 In-shaft passage
55S boundary (minimum flow passage)
60 Valve body
60A Upper box-shaped body
60B Lower lid 60a Valve seat member mounting portion 61 Flow path switching chamber 65 Valve seat member

Claims

弁シート部を有すると共に流入口と複数個の流路が形成される弁本体と、前記弁シート部内に配置されると共に前記複数個の流路に連通する複数の流出口を有する弁シート部材と、前記弁シート部材に接触すると共に前記流入口と連通する通路部とを有する弁体と、該弁体を駆動するアクチュエータとを備え、該アクチュエータにより前記弁体を移動させて、前記弁シート部材の前記流出口と前記弁体の前記通路部とを介して、前記流入口と前記弁本体の複数個の前記流路とを選択的に連通させることにより流路の切り換えを行なう多方切換弁であって、
前記弁シート部に配置される前記弁シート部材は、前記弁本体とは別体であり、
前記弁本体の前記弁シート部には、前記流出口の口径のみが異なる複数の前記弁シート部材を選択的に取付固定可能な形状寸法に、弁シート部材取付部が形成されており、
前記弁本体は、気密的に締結固定される上側箱状体と下側蓋状体とからなり、該上側箱状体と下側蓋状体との間に前記弁体を配置する流路切換室が画成されるとともに、該流路切換室の天井面部が前記弁シート部材が選択的に取付固定される前記弁シート部材取付部とされており、
前記弁シート部材に形成される複数の前記流出口のうちの少なくとも一つに絞り機能が設けられたことを特徴とする多方切換弁。 A valve body inlet and a plurality of flow paths is formed with a valve seat, a valve seat member having a plurality of outlet ports communicating with the plurality pieces of channels while being disposed within the valve seat A valve body having a passage portion that is in contact with the valve seat member and communicates with the inlet, and an actuator that drives the valve body, the valve body being moved by the actuator, and the valve seat member A multi-way switching valve that switches the flow path by selectively communicating the flow inlet and the plurality of flow paths of the valve body through the outlet and the passage portion of the valve body. There,
The valve seat member disposed in the valve seat portion is separate from the valve body,
In the valve seat portion of the valve body, a valve seat member mounting portion is formed in a shape and size capable of selectively mounting and fixing the plurality of valve seat members that differ only in the diameter of the outlet port,
The valve body is composed of an upper box-like body and a lower lid-like body that are fastened and fixed in an airtight manner. A chamber is defined, and the ceiling surface portion of the flow path switching chamber is the valve seat member mounting portion to which the valve seat member is selectively mounted and fixed,
A multi-way switching valve , wherein a throttling function is provided in at least one of the plurality of outlets formed in the valve seat member.

弁シート部を有すると共に流入口と複数個の流路が形成される弁本体と、前記弁シート部内に配置されると共に前記複数個の流路に連通する複数の流出口を有する弁シート部材と、前記弁シート部材に接触すると共に前記流入口と連通する通路部とを有する弁体と、該弁体を駆動するアクチュエータとを備え、該アクチュエータにより前記弁体を移動させて、前記弁シート部材の前記流出口と前記弁体の前記通路部とを介して、前記流入口と前記弁本体の複数個の前記流路とを選択的に連通させることにより流路の切り換えを行なう多方切換弁であって、
前記弁シート部に配置される前記弁シート部材は、前記弁本体とは別体であり、
前記弁本体の前記弁シート部には、前記流出口の口径のみが異なる複数の前記弁シート部材を選択的に取付固定可能な形状寸法に、弁シート部材取付部が形成されており、
前記弁本体は、気密的に締結固定される上側箱状体と下側蓋状体とからなり、該上側箱状体と下側蓋状体との間に前記弁体を配置する流路切換室が画成されるとともに、該流路切換室の天井面部が前記弁シート部材が選択的に取付固定される前記弁シート部材取付部とされており、
前記弁シート部材に形成される複数の前記流出口のうちの少なくとも一つが、その流出口が前記流入口と連通された際の流体通路における最小流路断面積を有するように形成されたことを特徴とする多方切換弁。 A valve body inlet and a plurality of flow paths is formed with a valve seat, a valve seat member having a plurality of outlet ports communicating with the plurality pieces of channels while being disposed within the valve seat A valve body having a passage portion that is in contact with the valve seat member and communicates with the inlet, and an actuator that drives the valve body, the valve body being moved by the actuator, and the valve seat member A multi-way switching valve that switches the flow path by selectively communicating the flow inlet and the plurality of flow paths of the valve body through the outlet and the passage portion of the valve body. There,
The valve seat member disposed in the valve seat portion is separate from the valve body,
In the valve seat portion of the valve body, a valve seat member mounting portion is formed in a shape and size capable of selectively mounting and fixing the plurality of valve seat members that differ only in the diameter of the outlet port,
The valve body is composed of an upper box-like body and a lower lid-like body that are fastened and fixed in an airtight manner, and the flow path switching is performed such that the valve body is disposed between the upper box-like body and the lower lid-like body. A chamber is defined, and the ceiling surface portion of the flow path switching chamber is the valve seat member mounting portion to which the valve seat member is selectively mounted and fixed,
At least one of the plurality of outlets formed in the valve seat member is formed to have a minimum flow path cross-sectional area in a fluid passage when the outlet is communicated with the inlet. Features a multi-way switching valve.

請求項１又は２に記載の構成を有する多方切換弁の製造組立方法であって、
前記弁シート部材取付部が形成された前記弁本体の複数個の前記上側箱状体と、前記弁本体の複数個の前記下側蓋状体と、複数個の前記弁体と、前記複数の流出口のうちの少なくとも一つの口径が異なる複数種の弁シート部材と、を各々製造する製造工程、及び、前記異なる複数種の弁シート部材の内の一つの弁シート部材を選択して前記上側箱状体の前記弁シート部材取付部に取付固定し、その後、前記弁体を前記上側箱状体の前記流路切換室に装着配置し、更に、前記下側蓋状体を前記上側箱状体に装着して気密的に締結固定して組立する組立工程、を含むことを特徴とする多方切換弁の製造組立方法。 A method for producing and assembling a multi-way selector valve having the configuration according to claim 1 or 2 ,
Before a plurality of the upper box-like body of said valve body Kiben seat member mounting portion is formed, a plurality of the lower lid-like body before Kiben body, a plurality of said valve body, said A plurality of types of valve seat members having different diameters of at least one of the plurality of outlets, and a manufacturing process for manufacturing each of the valve seat members, and one valve seat member among the different types of valve seat members is selected. The valve body is attached and fixed to the valve seat member attachment portion of the upper box-like body, and then the valve body is mounted and arranged in the flow path switching chamber of the upper box-like body, and the lower lid-like body is further arranged on the upper side. A method for manufacturing and assembling a multi-way switching valve, comprising: an assembling step for mounting and airtightly fixing and assembling to a box-like body.