JPH08170753A - Electric flow rate control valve - Google Patents
Electric flow rate control valveInfo
- Publication number
- JPH08170753A JPH08170753A JP6314374A JP31437494A JPH08170753A JP H08170753 A JPH08170753 A JP H08170753A JP 6314374 A JP6314374 A JP 6314374A JP 31437494 A JP31437494 A JP 31437494A JP H08170753 A JPH08170753 A JP H08170753A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- holder
- orifice
- control valve
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Magnetically Actuated Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は冷凍サイクルに用いられ
る冷媒のような流体の流量制御に使用する電動流量制御
弁に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric flow control valve used for controlling the flow rate of a fluid such as a refrigerant used in a refrigeration cycle.
【０００２】[0002]
【従来の技術】図７は、特開平６−１７４１２９号公報
に開示される電動流量制御弁を示す。この電動流量制御
弁は、密封容器であるキャン６の内側に配設されるロー
タ１０と、キャン６の外側に配設されるステータコイル
９により、ステッピングモータＭが構成される。この電
動流量制御弁は、弁室１に連通する一次口１ａ及び二次
口１ｂを有し二次口側隔壁の連通弁口３に弁座３ａを設
けた弁本体Ａと、この弁本体Ａの弁座３ａに接離する長
さの長い棒状のニードル弁５´と、前記弁本体Ａの二次
口１ｂと反対側になる該側部に固定される円筒状の密閉
ケース６及び該ケースの外側に配置されるステータコイ
ル９を有し、前記ケース６の内側にステータコイル９の
通電励磁によって回転される弁開閉方向に位置移動可能
なロータ１０を設けたパルス制御可能なステッピングモ
ータＭと、該ステッピングモータＭのロータ回転による
ねじ送り作用で前記ニードル弁５´を開閉作動させる弁
作動機構Ｂとを具備し、前記一次口１ａには第１流路Ｐ
ａが接続され、該一次口１ａと直交する二次口１ｂには
第２流路Ｐｂが接続される。2. Description of the Related Art FIG. 7 shows an electric flow control valve disclosed in Japanese Patent Laid-Open No. 6-174129. In this electric flow rate control valve, a stepping motor M is constituted by a rotor 10 arranged inside a can 6 which is a hermetic container and a stator coil 9 arranged outside the can 6. This electric flow control valve has a valve body A having a primary port 1a and a secondary port 1b communicating with the valve chamber 1 and a valve seat 3a provided at a communication valve port 3 of a secondary-side partition wall, and a valve body A A long rod-shaped needle valve 5'that comes into contact with and separates from the valve seat 3a, a cylindrical closed case 6 fixed to the side opposite to the secondary port 1b of the valve body A, and the case A pulse controllable stepping motor M having a stator coil 9 disposed outside of the case 6 and a rotor 10 that is movable inside the case 6 in the valve opening / closing direction and is rotated by energization and excitation of the stator coil 9; And a valve actuation mechanism B for opening and closing the needle valve 5'by a screw feeding action by the rotation of the stepping motor M, and the first flow path P is provided in the primary port 1a.
a is connected, and the second flow path Pb is connected to the secondary port 1b orthogonal to the primary port 1a.
【０００３】なお、前記密閉ケース６は下蓋７とキャン
８とで構成され、前記ロータ１０は筒状のスリーブ１１
と、該スリーブ１１の外側に嵌着された筒状の永久磁石
１２とで構成される。そして、前記弁作動機構Ｂは、内
側に雌ねじ部３１及び軸受部３２を有し、前記弁本体Ａ
に弁室１内へ垂下するように埋設固定された円筒状のブ
ッシュ３０と、このブッシュ雌ねじ部３１に螺合される
雄ねじ部３６及び前記ブッシュ軸受部３２にガイドされ
る回転支承部３７を有し、前記ロータ１０（合成樹脂製
のスリーブ１１）の中心部に同心状に埋設固定された弁
ホルダ３５とから構成されている。The closed case 6 is composed of a lower lid 7 and a can 8, and the rotor 10 is a cylindrical sleeve 11.
And a cylindrical permanent magnet 12 fitted to the outside of the sleeve 11. The valve operating mechanism B has an internal thread portion 31 and a bearing portion 32 on the inner side, and the valve body A
Has a cylindrical bush 30 embedded and fixed so as to hang down in the valve chamber 1, a male screw portion 36 screwed into the bush female screw portion 31, and a rotation bearing portion 37 guided by the bush bearing portion 32. In addition, the rotor 10 (sleeve 11 made of synthetic resin) is concentrically embedded in the center of the rotor and fixed to the valve holder 35.
【０００４】そして、前記弁ホルダ３５の内部に圧縮ス
プリングで弁突出方向に付勢される弁子構成のニードル
弁５´と、このニードル弁５´の位置規制を行う固定リ
ング（前記弁本体Ａの弁座３ａに対するニードル弁５´
の位置を弁組立時に調整する機能を有する）とを組込
み、且つ前記弁ホルダ３５にスリーブ後端凹所１１ａ内
へ突出するシャフト部３５ａを設け、該シャフト部３５
ａをガイドする前記凹所１１ａが遊嵌可能な凹型形状の
シャフト軸受体４０を前記キャン８の後端（図示上端）
内側部に固定して、前記ロータ１０をブッシュ軸受部３
２とシャフト軸受体４０による両端軸受構造で回転及び
位置移動可能に保持している。Then, a needle valve 5'having a valve element which is biased in the valve projecting direction by a compression spring inside the valve holder 35, and a fixing ring (the valve body A for restricting the position of the needle valve 5 '). Needle valve 5'for the valve seat 3a of the
Has a function of adjusting the position of the valve when assembling the valve), and the valve holder 35 is provided with a shaft portion 35a protruding into the sleeve rear end recess 11a.
The recessed shaft bearing body 40, which guides the a, can be loosely fitted to the rear end (the upper end in the figure) of the can 8.
The rotor 10 is fixed to the inner portion and the rotor 10 is fixed to the bush bearing portion 3
A double-end bearing structure composed of the shaft 2 and the shaft bearing body 40 holds the shaft bearing body 40 so that the shaft can rotate and move.
【０００５】前記雌ねじ部３１及び雄ねじ部３６の螺合
長さは、ニードル弁５´の開閉移動ストロークと同一又
は長く設定され、前記ニードル弁５´の全開時において
弁ホルダ３５の雄ねじ部３６が前記ブッシュ３０の雌ね
じ部３１から噛合離脱するようにし、且つ前記ロータ１
０と前記シャフト軸受体４０との間に復帰用スプリング
４１を組込んでいる。この復帰用スプリング４１は、ニ
ードル弁５´の開閉時においてシャフト軸受体４０から
離れ、ニードル弁５´の全開時にはシャフト軸受体４０
に当接して圧縮され、前記ロータ１０及び弁ホルダ３５
を該ホルダ雄ねじ部３６がブッシュ雌ねじ部３１に噛み
合う方向に付勢する作用をなす。The screwing length of the female screw portion 31 and the male screw portion 36 is set to be the same as or longer than the opening / closing stroke of the needle valve 5 ', and the male screw portion 36 of the valve holder 35 is opened when the needle valve 5'is fully opened. The bush 30 is disengaged from the female screw portion 31, and the rotor 1
A return spring 41 is incorporated between 0 and the shaft bearing body 40. The return spring 41 is separated from the shaft bearing body 40 when the needle valve 5'is opened and closed, and is opened when the needle valve 5'is fully opened.
The rotor 10 and the valve holder 35 are contacted with and compressed.
Has a function of urging the holder male screw portion 36 in a direction in which it engages with the bush female screw portion 31.
【０００６】前記雌ねじ部３１及び雄ねじ部３６のねじ
螺合部は、前記弁本体Ａの弁室１内に配置され、弁室１
内に供給されるオイル成分を含む流体（例えば冷媒）が
ねじ螺合部に潤滑されるようになっている。図中１８ａ
は前記スリーブ１１の下端部に一体的に突設された閉弁
規制ピン、１９ａは弁本体Ａの樹脂蓋上に一体的に突設
された全閉ストッパを示し、ニードル弁５´の閉弁時に
前記ピン１８ａが全閉ストッパ１９ａの外周面部に当接
して、前記ロータ１０の閉弁下降限を規制するようにな
っている。４２はコイル通電端子を有するモータコネク
タ部である。The screw threaded portions of the female screw portion 31 and the male screw portion 36 are arranged in the valve chamber 1 of the valve body A, and the valve chamber 1
A fluid (for example, a refrigerant) containing an oil component supplied therein is lubricated in the screw threaded portion. 18a in the figure
Is a valve closing control pin integrally provided on the lower end portion of the sleeve 11, 19a is a fully closed stopper integrally provided on the resin lid of the valve body A, and the needle valve 5'is closed. At this time, the pin 18a comes into contact with the outer peripheral surface of the fully closed stopper 19a to regulate the valve closing lower limit of the rotor 10. 42 is a motor connector portion having a coil energizing terminal.
【０００７】[0007]
【発明が解決しようとする課題】図７に説明した従来の
電動流量制御弁にあっては、閉弁時にはニードル弁５´
が弁座３ａに圧接され、流路は全閉される。そして、開
弁時には弁ホルダ３５が上昇を開始しても、ニードル弁
５´はスプリングにより、弁シートに押しつけられてお
り、流路は開かず、リフトが所定の距離以上となったと
きに、流路が開き始める。したがって、横軸に弁ホルダ
のリフト（パルスモータに与えるパルス数に比例する）
を、たて軸に流量をとったときに、カーブＣ1は図８の
ような形状となる。上述した従来の制御弁にあっては、
ニードル弁５´は弁ホルダに固定されていて、交換はで
きない。しかしながら、冷凍サイクルにおいては、弁体
のリフトと流量の関係の特性を最適化することが求めら
れる。この特性は、弁体とオリフィス及び弁座の形状，
寸法を選択することによって達成される。本発明は以上
のような要求に応じることができる電動流量制御弁を提
供するものである。In the conventional electric flow rate control valve described in FIG. 7, the needle valve 5'is closed when the valve is closed.
Is pressed against the valve seat 3a, and the flow path is fully closed. Then, even when the valve holder 35 starts to move up when the valve is opened, the needle valve 5'is pressed against the valve seat by the spring, the flow path does not open, and the lift exceeds a predetermined distance, The flow path begins to open. Therefore, the lift of the valve holder on the horizontal axis (proportional to the number of pulses given to the pulse motor)
When the flow rate is taken by the vertical axis, the curve C 1 has a shape as shown in FIG. In the conventional control valve described above,
The needle valve 5'is fixed to the valve holder and cannot be replaced. However, in the refrigeration cycle, it is required to optimize the characteristic of the relationship between the valve lift and the flow rate. This characteristic is based on the shape of the valve body, the orifice and the valve seat,
This is accomplished by choosing the dimensions. The present invention provides an electric flow control valve capable of meeting the above demands.
【０００８】[0008]
【課題を解決するための手段】本発明の電動流量制御弁
は、弁室とオリフィスを有する弁本体と、弁本体にとり
つけられる円筒状のキャンと、キャンに配設されるステ
ータ部材と、ステータの内側に配設されるロータ部材
と、ロータ部材と一体の弁ホルダと、弁ホルダに交換自
在にとりつけられるシャフト状の弁体とを有し、弁ホル
ダはロータ部材の回転によるねじ送り作用によって弁体
とオリフィスの間の流路面積を制御するものである。SUMMARY OF THE INVENTION An electric flow control valve according to the present invention includes a valve body having a valve chamber and an orifice, a cylindrical can attached to the valve body, a stator member arranged in the can, and a stator. A rotor member disposed inside the rotor, a valve holder integrated with the rotor member, and a shaft-shaped valve element that is replaceably attached to the valve holder. It controls the flow passage area between the valve body and the orifice.
【０００９】[0009]
【作用】本発明は以上の構成を備えることによって、シ
ャフト状の弁体を交替するだけで、種々の流量特性に対
応できるものである。By virtue of the above-mentioned structure, the present invention can cope with various flow rate characteristics only by replacing the shaft-shaped valve body.
【００１０】[0010]
【実施例】図１は本発明の電動流量制御弁の全体構成を
示す説明図、図２は要部の説明図である。全体を符号１
Ａで示す電動流量制御弁は、弁本体１００を有し、弁本
体１００は、例えば黄銅製のもので、弁室１１０と、弁
室１１０に通ずる一次口１１２とオリフィスを形成する
二次口１１４を有し、一次口１１２にはパイプ１４０が
連結される。二次口１１４には弁本体と一体のパイプ部
１２０が設けられる。オリフィス１１４の弁室１１０側
には、テーパー状の弁座１１６が形成される。弁本体１
００の弁室１１０のオリフィス１１４に対向する位置に
は、オリフィス１１４と同心上に丸穴１１８が設けら
れ、この丸穴１１８にブッシュ２２０が挿入される。こ
のブッシュ２２０は、弁本体１００の突出部を内側に折
り曲げるカシメ加工により弁本体１００に組付けられ
る。丸穴１１８には、軸方向の溝１１９が設けてあり、
冷媒等の流体はこの溝１１９を通ってキャン３００の内
部に充満する。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view showing the overall construction of an electric flow control valve of the present invention, and FIG. Code 1 as a whole
The electric flow control valve shown by A has a valve body 100, and the valve body 100 is made of brass, for example, and has a valve chamber 110, a primary port 112 communicating with the valve chamber 110, and a secondary port 114 forming an orifice. A pipe 140 is connected to the primary port 112. A pipe portion 120 integrated with the valve body is provided at the secondary port 114. A tapered valve seat 116 is formed on the valve chamber 110 side of the orifice 114. Valve body 1
At a position facing the orifice 114 of the valve chamber 110 of 00, a round hole 118 is provided concentrically with the orifice 114, and a bush 220 is inserted into the round hole 118. The bush 220 is assembled to the valve body 100 by caulking the protrusion of the valve body 100 inward. The circular hole 118 is provided with an axial groove 119,
A fluid such as a refrigerant passes through the groove 119 and fills the inside of the can 300.
【００１１】ブッシュ２２０は、例えば鋼材製のもの
で、雌ねじ２２２を有し、ブッシュ２２０に挿入される
弁ホルダ２００の雄ねじ２０２が螺合する。弁ホルダ２
００は、内径部に圧入される弁体２５０を保持する。弁
ホルダ２００は、ブッシュ２２０内で回転とともに軸方
向に案内される。弁ホルダ２００の中心を貫通してシャ
フト状の弁体２５０が挿入され、弁ホルダ２００の外側
には、磁性材料を含有する樹脂材を弁ホルダと一体に成
型したロータ４５０が設けられる。弁ホルダ２００の上
部にはコイルスプリング２６０が弁体２５０の外周部に
嵌装される。弁本体１００の上部には、雄ねじ部１３０
が形成してあり、この雄ねじ部１３０を利用してキャン
３００が螺合される。The bush 220 is made of, for example, steel, has a female thread 222, and the male thread 202 of the valve holder 200 inserted into the bush 220 is screwed into the bush 220. Valve holder 2
00 holds the valve body 250 press-fitted into the inner diameter portion. The valve holder 200 is guided axially in the bush 220 as it rotates. A shaft-shaped valve body 250 is inserted through the center of the valve holder 200, and a rotor 450 formed by integrally molding a resin material containing a magnetic material with the valve holder is provided outside the valve holder 200. A coil spring 260 is fitted on the outer periphery of the valve body 250 on the valve holder 200. On the upper part of the valve body 100, a male screw part 130
Is formed, and the can 300 is screwed by using the male screw portion 130.
【００１２】図２の（Ａ），（Ｂ）はキャン３００の上
面図と断面図を示す。円筒状のキャン３００の底部３３
０の中心はパイプ状の取付部３１０に形成され、取付部
３１０の下縁部はテーパー部３１２に形成される。取付
部３１０の内側には雌ねじ部３１４が設けられ、この雌
ねじ部３１４を弁本体１００の雄ねじ部１３０に螺合す
ることによって、キャン３００を弁本体１００に固着す
る。キャン３００の取付部３１０の先端をテーパー部３
１２に形成してあるので、このテーパー部３１２が弁本
体１００に圧着され、両者は気密を保ちつつ確実に螺合
される。必要に応じて、ねじ部にシール剤を塗布するこ
とによって、シール性をより向上することができる。キ
ャン３００の底部３３０には、円周上に適当数の突起３
３２が設けてある。この突起３３２は、ボビン４００を
載置して、キャン３００内での冷媒流体の循環を助長す
る。2A and 2B are a top view and a sectional view of the can 300. Bottom 33 of cylindrical can 300
The center of 0 is formed in the pipe-shaped mounting portion 310, and the lower edge of the mounting portion 310 is formed in the tapered portion 312. A female screw portion 314 is provided inside the mounting portion 310, and the can 300 is fixed to the valve body 100 by screwing the female screw portion 314 into the male screw portion 130 of the valve body 100. The tip of the mounting portion 310 of the can 300 is tapered to the tapered portion 3.
Since it is formed in 12, the tapered portion 312 is crimped to the valve body 100, and both are securely screwed while maintaining airtightness. If necessary, the sealing property can be further improved by applying a sealant to the threaded portion. The bottom portion 330 of the can 300 has an appropriate number of protrusions 3 on its circumference.
32 is provided. The protrusion 332 mounts the bobbin 400 and promotes circulation of the refrigerant fluid in the can 300.
【００１３】図１に示すように、樹脂材を成型加工して
つくられるボビン４００は、頂部に電極端子３７０がと
りつけられ、端子３７０はキャン３００の上部を覆うキ
ャップ３５０を貫通して外部へ案内される。キャン３０
０の上部には段付部３２０が設けてあり、この段付部３
２０を利用してキャップ３５０を嵌合し、アーク溶接に
より両者を固着する。ボビン４００にはヨーク４３０が
一体に埋め込まれ。ボビン４００に磁性ワイヤ４４０が
巻かれてステッピングモータのステータが構成され、ロ
ータ部材４５０を駆動する。ボビン４００の最下部のリ
ング部４０２は、キャン３００の底部３３０の突起３３
２上に載置される。したがって、弁本体１００の弁室１
１０から通路１１９を通ってキャン３００の内部へ送り
込まれる冷媒は、突起３３２により形成される間隙を通
ってキャン３００の内部全体に送られる。そこで、ボビ
ンを形成するリング部４０２に縦溝４０４を設けておく
ことにより、冷媒がこの縦溝４０４を通ってキャンの上
部にも流れ、循環をスムーズに達成することができる。
ボビン４００の頂上から下向けた突出するボス部４１０
を設けてあり、このボス部４１０の入口部にテーパー部
４１２を有する支持穴４１１にシャフト状の弁体２５０
の上端部２５２が挿入される。As shown in FIG. 1, a bobbin 400 formed by molding a resin material has an electrode terminal 370 attached to the top, and the terminal 370 penetrates a cap 350 covering the upper portion of the can 300 to guide it to the outside. To be done. Can 30
0 is provided with a stepped portion 320, and the stepped portion 3
20 is used to fit the cap 350, and both are fixed by arc welding. The yoke 430 is integrally embedded in the bobbin 400. The magnetic wire 440 is wound around the bobbin 400 to form the stator of the stepping motor, and drives the rotor member 450. The lowermost ring portion 402 of the bobbin 400 is provided with the protrusion 33 of the bottom portion 330 of the can 300.
2 is placed on. Therefore, the valve chamber 1 of the valve body 100
The refrigerant sent from the inside of the can 300 through the passage 119 is sent to the entire inside of the can 300 through the gap formed by the protrusion 332. Therefore, by providing the vertical groove 404 in the ring portion 402 forming the bobbin, the refrigerant also flows through the vertical groove 404 to the upper part of the can, and the circulation can be smoothly achieved.
Boss 410 protruding downward from the top of bobbin 400
The shaft-shaped valve body 250 is provided in the support hole 411 having the tapered portion 412 at the entrance of the boss portion 410.
The upper end 252 of is inserted.
【００１４】図３は弁体２５０とオリフィス１１４の関
係を示す説明図である。説明上、オリフィス１１４はス
トレートの穴の場合を示してある。弁体２５０の先端部
２５６のテーパー角度を２０、オリフィス１１４の内口
径をｄ（ｍｍ）、弁体２５０のオリフィス１１４の入口
からのリフトをＸとすると、弁体２５０とオリフィス１
１４の間に形成される流体の通過面積Ａは、 Ａ＝π×ｓｉｎθ（ｄ−Ｘｓｉｎθｃｏｓθ）ｍｍ2 （式１） で示される。式１からわかるように、オリフィス１１４
の径寸法ｄが一定であっても、弁体の先端に設けるテー
パー部の頂角θを変更することによって、リフトＸに対
する通過面積Ａの値を選択することができる。FIG. 3 is an explanatory view showing the relationship between the valve body 250 and the orifice 114. For the sake of explanation, the orifice 114 is shown as a straight hole. When the taper angle of the tip portion 256 of the valve body 250 is 20, the inner diameter of the orifice 114 is d (mm), and the lift of the valve body 250 from the inlet of the orifice 114 is X, the valve body 250 and the orifice 1
The passage area A of the fluid formed between 14 is represented by A = π × sin θ (d−X sin θ cos θ) mm 2 (equation 1). As can be seen from Equation 1, the orifice 114
Even if the diameter dimension d is constant, the value of the passage area A for the lift X can be selected by changing the apex angle θ of the tapered portion provided at the tip of the valve body.
【００１５】図４は、弁体２５０の頂角を変更したとき
の流量の変化を示す。横軸にパルスＰ（弁体のリフト）
を、たて軸に流量Ｑをとったときに、頂角２θの変化に
より、特性のカーブが変化することを示している。流量
Ｑは通過面積Ａに比例し、図中の式により計算される。
本発明にあっては、弁体２５０は弁ホルダ２００に対し
て交換自在に圧入され、取付けられる。したがって、弁
体２５０の先端のテーパー部の頂角を変更した弁体を予
め用意しておくことによって、弁本体等の他の部品を共
用して種々の流量特性を有する電動流量制御弁を得るこ
とができる。FIG. 4 shows changes in the flow rate when the apex angle of the valve body 250 is changed. Pulse P on horizontal axis (valve lift)
Shows that when the flow rate Q is taken on the vertical axis, the characteristic curve changes due to the change in the apex angle 2θ. The flow rate Q is proportional to the passage area A and is calculated by the formula in the figure.
In the present invention, the valve body 250 is press-fitted and attached to the valve holder 200 in a replaceable manner. Therefore, by preparing in advance a valve body in which the apex angle of the tapered portion of the valve body 250 is changed, the electric flow control valve having various flow rate characteristics can be obtained by sharing other parts such as the valve body. be able to.
【００１６】図５は本発明の他の実施例に係る閉弁状態
における弁体２５０とオリフィス１１４の関係を示す説
明図である。本実施例にあっては、オリフィス１１４の
内径寸法Ｈ1に比べて、弁体２５０の外径寸法Ｄ1を小さ
く形成してある。したがって、弁体２５０がオリフィス
１１４内に挿入された閉弁状態にあっても、最小限の流
路は開いており、流量が確保される。弁体２５０の先端
部はテーパー部２５６のテーパー角度を変更することに
よって、弁体のリフト量に比例して増加する流量変化を
選択することができる。FIG. 5 is an explanatory view showing the relationship between the valve body 250 and the orifice 114 in the valve closed state according to another embodiment of the present invention. In the present embodiment, the outer diameter dimension D 1 of the valve body 250 is formed smaller than the inner diameter dimension H 1 of the orifice 114. Therefore, even when the valve body 250 is in the closed state in which the valve body 250 is inserted into the orifice 114, the minimum flow path is open and the flow rate is secured. By changing the taper angle of the taper portion 256 at the tip portion of the valve body 250, it is possible to select a flow rate change that increases in proportion to the lift amount of the valve body.
【００１７】本実施例の電動流量制御弁にあっては、図
６に示す特性を得ることができる。カーブＣ12は閉弁状
態の弁体２５０がオリフィス１１４内をリフトＬ2まで
上昇する間の変化を示し、カーブＣ10は、リフトがＬ2
以上となってテーパー部２５６が弁座１１６から抜き出
されていく間の弁ホルダのリフトに対する流量の変化を
示す。The electric flow control valve of this embodiment can obtain the characteristics shown in FIG. A curve C 12 shows a change while the valve body 250 in the closed state rises to the lift L 2 in the orifice 114, and a curve C 10 shows a lift L 2.
The flow rate changes with respect to the lift of the valve holder while the tapered portion 256 is being pulled out from the valve seat 116 as described above.
【００１８】[0018]
【発明の効果】本発明は以上のように、電動流量制御弁
において、弁体を弁ホルダに交換自在にとりつける構造
とするとともに、弁座と当接する部分の形状をかえた弁
体を用意しておくことによって、種々の流量特性を有す
る制御弁を得ることができる。弁本体やその他の機構を
共用し、弁体のみを交換すればよいので、製造コストも
低減し、短時間で要求される仕様を満たす制御弁を提供
することができる。As described above, according to the present invention, in the electric flow control valve, the valve body is attached to the valve holder in a replaceable manner, and the valve body in which the shape in contact with the valve seat is changed is prepared. By setting it in advance, control valves having various flow rate characteristics can be obtained. Since the valve main body and other mechanisms are shared and only the valve body needs to be replaced, the manufacturing cost can be reduced, and the control valve that meets the required specifications can be provided in a short time.
【図１】本発明の電動流量制御弁の全体構成を示す断面
図。FIG. 1 is a sectional view showing the overall configuration of an electric flow control valve of the present invention.
【図２】本発明の電動流量制御弁の要部を示す断面図。FIG. 2 is a sectional view showing a main part of the electric flow control valve of the present invention.
【図３】弁体とオリフィスの関係を示す説明図。FIG. 3 is an explanatory diagram showing a relationship between a valve body and an orifice.
【図４】本発明の制御弁の特性を示すグラフ。FIG. 4 is a graph showing the characteristics of the control valve of the present invention.
【図５】本発明の他の実施例を示す説明図。FIG. 5 is an explanatory view showing another embodiment of the present invention.
【図６】図５の実施例の特性を示すグラフ。FIG. 6 is a graph showing characteristics of the example of FIG.
【図７】従来の電動制御弁の断面図。FIG. 7 is a cross-sectional view of a conventional electric control valve.
【図８】従来の電動制御弁の特性を示すグラフ。FIG. 8 is a graph showing characteristics of a conventional electric control valve.
１００ 弁本体 １１０ 弁室 １１４ オリフィス １１６ 弁座 ２００ 弁ホルダ ２２０ ブッシュ ２５０ 弁体 ２５６ テーパー部 ３００ キャン ３５０ キャップ ４００ ボビン ４１０ ボス部 ４３０ ヨーク ４４０ ワイヤ ４５０ ロータ部材 100 valve body 110 valve chamber 114 orifice 116 valve seat 200 valve holder 220 bush 250 valve body 256 taper part 300 can 350 cap 400 bobbin 410 boss part 430 yoke 440 wire 450 rotor member
Claims (6)
本体にとりつけられる円筒状のキャンと、キャンに配設
されるステータ部材と、ステータの内側に配設されるロ
ータ部材と、ロータ部材と一体の弁ホルダと、弁ホルダ
に交換自在にとりつけられるシャフト状の弁体とを有
し、弁ホルダはロータ部材の回転によるねじ送り作用に
よって弁体とオリフィスの間の流路面積を制御する電動
流量制御弁。1. A valve body having a valve chamber and an orifice, a cylindrical can attached to the valve body, a stator member arranged in the can, a rotor member arranged inside the stator, and a rotor member. Has a valve holder integrated with the valve holder, and a shaft-shaped valve element that is replaceably attached to the valve holder. The valve holder controls the flow passage area between the valve element and the orifice by the screw feeding action by the rotation of the rotor member. Electric flow control valve.
本体にとりつけられる円筒状のキャンと、キャンの内側
に配設されるステータ部材と、ステータの内側に配設さ
れるロータ部材と、ロータ部材と一体の弁ホルダと、弁
ホルダに交換自在にとりつけられるシャフト状の弁体
と、弁体の上部を支持する部材と、弁本体に固着されて
弁ホルダをねじ係合により支持するブッシュとを有し、
弁ホルダはロータ部材の回転によるねじ送り作用によっ
て弁体とオリフィスの間の流路面積を制御する電動流量
制御弁。2. A valve main body having a valve chamber and an orifice, a cylindrical can attached to the valve main body, a stator member disposed inside the can, and a rotor member disposed inside the stator. A valve holder integrated with a rotor member, a shaft-shaped valve body that is replaceably attached to the valve holder, a member that supports the upper portion of the valve body, and a bush that is fixed to the valve body and supports the valve holder by screw engagement. Has and
The valve holder is an electric flow control valve that controls the flow passage area between the valve body and the orifice by the screw feeding action by the rotation of the rotor member.
本体にとりつけられる円筒状のキャンと、キャンの外側
に配設されるステータ部材と、キャンの内側に配設され
るロータ部材と、ロータ部材と一体の弁ホルダと、弁ホ
ルダに交換自在にとりつけられるシャフト状の弁体と、
弁体の上部を支持する部材と、弁本体に固着されて弁ホ
ルダをねじ係合により支持するブッシュとを有し、弁ホ
ルダはロータ部材の回転によるねじ送り作用によって弁
体とオリフィスの間の流路面積を制御する電動流量制御
弁。3. A valve body having a valve chamber and an orifice, a cylindrical can attached to the valve body, a stator member arranged outside the can, and a rotor member arranged inside the can. A valve holder integrated with the rotor member, a shaft-shaped valve body that is replaceably attached to the valve holder,
The valve holder includes a member that supports the upper portion of the valve body and a bush that is fixed to the valve body and that supports the valve holder by screw engagement. An electric flow control valve that controls the flow passage area.
法に対して大きく形成され、オリフィスに対向する先端
部にテーパー部を設けてなる請求項１乃至３記載の電動
流量制御弁。4. The electric flow control valve according to claim 1, wherein a diameter of the valve body is formed larger than an inner diameter of the orifice, and a taper portion is provided at a tip portion facing the orifice.
じて変更されるものである請求項４記載の電動流量制御
弁。5. The electric flow control valve according to claim 4, wherein the valve body has a taper portion whose apex angle is changed according to the flow rate characteristic.
法に対して小さく形成される請求項１乃至３記載の電動
流量制御弁6. The electric flow control valve according to claim 1, wherein the diameter of the valve body is smaller than the inner diameter of the orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6314374A JPH08170753A (en) | 1994-12-19 | 1994-12-19 | Electric flow rate control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6314374A JPH08170753A (en) | 1994-12-19 | 1994-12-19 | Electric flow rate control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08170753A true JPH08170753A (en) | 1996-07-02 |
Family
ID=18052577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6314374A Pending JPH08170753A (en) | 1994-12-19 | 1994-12-19 | Electric flow rate control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08170753A (en) |
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|---|---|---|---|---|
| JP2006266663A (en) * | 2005-02-25 | 2006-10-05 | Mitsubishi Heavy Ind Ltd | Expansion valve and air conditioner |
| JP2008138971A (en) * | 2006-12-04 | 2008-06-19 | Denso Corp | Ejector type heat pump cycle |
| JP2009052742A (en) * | 2007-08-02 | 2009-03-12 | Saginomiya Seisakusho Inc | Needle valve and refrigerating cycle device having the needle valve |
| JP2012026525A (en) * | 2010-07-26 | 2012-02-09 | Fuji Koki Corp | Multi-way selector valve |
| CN102840372A (en) * | 2011-06-23 | 2012-12-26 | 浙江三花股份有限公司 | Expansion valve and coil thereof |
| WO2015140877A1 (en) * | 2014-03-17 | 2015-09-24 | 三菱電機株式会社 | Throttling device and refrigeration cycle device |
| JP2016106205A (en) * | 2016-02-10 | 2016-06-16 | 株式会社不二工機 | Motor valve |
| CN106090388A (en) * | 2016-08-26 | 2016-11-09 | 湖北益健堂科技股份有限公司 | Electrical adjustment flow valve |
| JP2017150669A (en) * | 2017-04-19 | 2017-08-31 | 株式会社不二工機 | Motor valve |
| JP2018115768A (en) * | 2018-03-27 | 2018-07-26 | 株式会社不二工機 | Motor valve |
| EP3462064A1 (en) | 2015-11-17 | 2019-04-03 | Fujikoki Corporation | Flow control valve |
| JP2020159561A (en) * | 2020-07-02 | 2020-10-01 | 株式会社不二工機 | Flow rate adjustment valve |
| JP2020169728A (en) * | 2019-09-03 | 2020-10-15 | 株式会社不二工機 | Motor-operated valve |
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1994
- 1994-12-19 JP JP6314374A patent/JPH08170753A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006266663A (en) * | 2005-02-25 | 2006-10-05 | Mitsubishi Heavy Ind Ltd | Expansion valve and air conditioner |
| JP2008138971A (en) * | 2006-12-04 | 2008-06-19 | Denso Corp | Ejector type heat pump cycle |
| JP4687637B2 (en) * | 2006-12-04 | 2011-05-25 | 株式会社デンソー | Ejector type heat pump cycle |
| JP2009052742A (en) * | 2007-08-02 | 2009-03-12 | Saginomiya Seisakusho Inc | Needle valve and refrigerating cycle device having the needle valve |
| JP2012026525A (en) * | 2010-07-26 | 2012-02-09 | Fuji Koki Corp | Multi-way selector valve |
| CN102840372A (en) * | 2011-06-23 | 2012-12-26 | 浙江三花股份有限公司 | Expansion valve and coil thereof |
| CN102840372B (en) * | 2011-06-23 | 2016-03-02 | 浙江三花股份有限公司 | A kind of expansion valve and coil thereof |
| WO2015140877A1 (en) * | 2014-03-17 | 2015-09-24 | 三菱電機株式会社 | Throttling device and refrigeration cycle device |
| JPWO2015140877A1 (en) * | 2014-03-17 | 2017-04-06 | 三菱電機株式会社 | Throttle device and refrigeration cycle device |
| EP3462064A1 (en) | 2015-11-17 | 2019-04-03 | Fujikoki Corporation | Flow control valve |
| EP3171058B2 (en) † | 2015-11-17 | 2021-12-22 | Fujikoki Corporation | Flow control valve |
| JP2016106205A (en) * | 2016-02-10 | 2016-06-16 | 株式会社不二工機 | Motor valve |
| CN106090388A (en) * | 2016-08-26 | 2016-11-09 | 湖北益健堂科技股份有限公司 | Electrical adjustment flow valve |
| JP2017150669A (en) * | 2017-04-19 | 2017-08-31 | 株式会社不二工機 | Motor valve |
| JP2018115768A (en) * | 2018-03-27 | 2018-07-26 | 株式会社不二工機 | Motor valve |
| JP2020169728A (en) * | 2019-09-03 | 2020-10-15 | 株式会社不二工機 | Motor-operated valve |
| JP2020159561A (en) * | 2020-07-02 | 2020-10-01 | 株式会社不二工機 | Flow rate adjustment valve |
| EP4040086A1 (en) | 2021-02-05 | 2022-08-10 | Pacific Industrial Co., Ltd. | Flow control valve |
| US11761544B2 (en) | 2021-02-05 | 2023-09-19 | Pacific Industrial Co., Ltd. | Flow control valve |
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