JPH0893946A - Flow control valve - Google Patents
Flow control valveInfo
- Publication number
- JPH0893946A JPH0893946A JP6224448A JP22444894A JPH0893946A JP H0893946 A JPH0893946 A JP H0893946A JP 6224448 A JP6224448 A JP 6224448A JP 22444894 A JP22444894 A JP 22444894A JP H0893946 A JPH0893946 A JP H0893946A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- flow control
- control valve
- needle
- 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
- Valve Housings (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流量制御弁に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow rate 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４は特開平６―１７４１３０号公報で
知られている従来の電動流量制御弁を示す。この従来の
電動流量制御弁は、弁室１に連通する一次口Ｐａ及び二
次口Ｐｂを有し二次口側隔壁２の連通弁口３に弁座３ａ
を設けた弁本体Ａと、この弁本体の弁口弁座３ａに接離
するニードル弁５と、弁本体Ａの二次口Ｐｂと反対側に
なる外側部に固定される密閉ケース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を設けたステッ
ピングモータＭと、このステッピングモータのロータ回
転によるねじ送り作用でニードル弁５を開閉作動させる
弁作動機構Ｂとを具備する。2. Description of the Related Art FIG. 4 shows a conventional electric flow control valve known from Japanese Patent Laid-Open No. 6-174130. This conventional electric flow control valve has a primary port Pa and a secondary port Pb communicating with the valve chamber 1 and a communication valve port 3 of a secondary port side partition wall 2 with a valve seat 3a.
A valve body A, a needle valve 5 which comes into contact with and separates from a valve opening valve seat 3a of the valve body, a closed case 6 fixed to an outer side of the valve body A opposite to the secondary port Pb, and A stepping motor M having a stator coil 9 arranged outside the case, and provided inside the case 6 with a rotor 10 which can be moved in the valve opening / closing direction rotated by energization of the stator coil 9 and the stepping motor M. And a valve operating mechanism B for opening and closing the needle valve 5 by a screw feeding action by the rotation of the rotor.
【０００３】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は合成樹脂製のスリーブ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。The closed case 6 is composed of a lower lid 7 and a can 8, and the rotor 10 is a sleeve 11 made of synthetic resin.
And a cylindrical permanent magnet 12 fitted to the outside of the sleeve 11.
【０００４】前記弁作動機構Ｂは、内側に雌ねじ部３１
及び軸受部３２を有し弁本体Ａの樹脂蓋３３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３
６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（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 valve actuating mechanism B has an internally threaded portion 31 inside.
And a cylindrical bush 30 having a bearing portion 32 and embedded and fixed in a resin lid 33 of the valve body A so as to hang down into the valve chamber 1.
And the male screw portion 3 screwed into the bush female screw portion 31.
6 and a valve holder 35 concentrically embedded and fixed in the central portion of the rotor 10 (sleeve 11) having a rotation support portion 37 guided by the bush bearing portion 32.
【０００５】そして、弁ホルダ３５の内部に圧縮スプリ
ング３８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
３９とを組込み、且つ前記ロータ１０を構成する永久磁
石１２の閉弁移動方向に対する後端部（図示上端部）に
ポリ４弗化エチレン等の合成樹脂材で成形された外周４
箇所の曲げ部４０ａ及びスリーブ嵌合穴を有する軸受パ
ッキン４０を、その外周曲げ部４０ａが前記キャン８の
内周面に摺接するように被嵌し、止まり嵌めの係止具４
１で脱落しないように固着して、この軸受パッキン４０
と弁作動機構部（ブッシュ軸受部３２）による両端支持
構造で前記ロータ１０を回転及び位置移動可能に保持し
ている。A needle valve 5 having a valve element which is urged in a valve protruding direction by a compression spring 38 and a fixing ring 39 for restricting the position of the needle valve 5 are incorporated in the valve holder 35, and An outer circumference 4 formed of a synthetic resin material such as polytetrafluoroethylene at the rear end (upper end in the drawing) of the permanent magnet 12 constituting the rotor 10 with respect to the valve closing movement direction.
A bearing packing 40 having a bent portion 40a and a sleeve fitting hole is fitted so that the outer circumferential bent portion 40a is in sliding contact with the inner peripheral surface of the can 8, and a stop fitting fitting 4 is provided.
The bearing packing 40
The rotor 10 is rotatably and movably held by the both-ends supporting structure of the valve operating mechanism (bush bearing 32).
【０００６】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
若干長く設定され、ニードル弁５の全開時においてホル
ダ雄ねじ部３６がブッシュ雌ねじ部３１から噛合離脱す
るようにし、且つ前記ロータ１０のスリーブ後端凹所１
１ａと前記ケース６（キャン上端部８ａ）との間に復帰
用スプリング４２を組込んでいる。The screwing length of the female screw portion 31 and the male screw portion 36 is set to be equal to or slightly longer than the opening / closing stroke of the needle valve 5, and when the needle valve 5 is fully opened, the holder male screw portion 36 is separated from the bush female screw portion 31. The rotor rear end recess 1 of the rotor 10
A return spring 42 is incorporated between 1a and the case 6 (can upper end 8a).
【０００７】この復帰用スプリング４２は、ニードル弁
５の閉弁時においてキャン上端部８ａから離れ、ニード
ル弁５の全開時にはキャン上端部８ａに当接して図４の
如く圧縮され、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 return spring 42 separates from the can upper end 8a when the needle valve 5 is closed, and comes into contact with the can upper end 8a when the needle valve 5 is fully opened and compressed as shown in FIG. This acts to urge the valve holder 35 in a direction in which the holder male screw portion 36 meshes with the bush female screw portion 31.
【０００８】前記雌ねじ部３１及び雄ねじ部３６のねじ
螺合部は、弁本体Ａの弁室１内に配置され、この弁室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。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.
A fluid (for example, a refrigerant) containing an oil component supplied therein is lubricated in the screw threaded portion.
【０００９】なお、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３３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、ロータ１０の閉
弁下降限を規制するようになっている。４３はコイル通
電端子４４を有するモータコネクタ部である。Reference numeral 18a in the drawing denotes a valve closing control pin integrally provided on the lower end portion of the sleeve 11, and 19a denotes a fully closed stopper integrally provided on the resin lid 33 of the valve body A. As shown, when the needle valve 5 is closed, 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. Reference numeral 43 is a motor connector portion having a coil energizing terminal 44.
【００１０】[0010]
【発明が解決しようとする課題】前記従来の電動流量制
御弁においては、弁本体Ａが黄銅材（真鍮材）で構成さ
れ、下蓋７とキャン８はステンレス材で構成されてい
る。そして、弁本体Ａと下蓋７とは、それぞれロー付け
にて溶接され、下蓋７とキャン８とは、それぞれテグ溶
接されている。In the conventional electric flow control valve described above, the valve body A is made of brass material (brass material), and the lower lid 7 and the can 8 are made of stainless material. The valve body A and the lower lid 7 are welded by brazing, and the lower lid 7 and the can 8 are welded by tegu.
【００１１】かかる構成の電動流量制御弁では、溶接箇
所が２箇所存在し、この２箇所の溶接箇所（弁本体Ａと
下蓋７との溶接部及び下蓋７とキャン８との溶接部）を
ロー付け溶接とテグ溶接によって接続固定しなければな
らないので、この溶接作業に手数を要し、また下蓋７の
介入による部品点数が増えて、製造コストを押し上げる
大きな要因となっていた。本発明は前記従来の問題を解
消するためになされたもので、その目的は低コストの製
造が可能で、しかも品質の良い流量制御弁を提供するこ
とにある。In the electric flow rate control valve having such a structure, there are two welding points, and these two welding points (the welded portion between the valve body A and the lower lid 7 and the welded portion between the lower lid 7 and the can 8). Since it has to be connected and fixed by brazing welding and tegu welding, this welding operation requires a lot of labor, and the number of parts is increased by the intervention of the lower lid 7, which is a major factor for increasing the manufacturing cost. The present invention has been made to solve the above conventional problems, and an object of the present invention is to provide a flow control valve which can be manufactured at low cost and which is of high quality.
【００１２】[0012]
【課題を解決するための手段】前記目的を達成するため
に、本発明においては黄銅材で構成した弁本体Ａと、こ
の弁本体Ａの弁座３ａに接離するニードル弁５と、この
ニードル弁の駆動部を密閉するステンレス材で構成した
キャン８とを具備する流量制御弁において、前記弁本体
Ａにキャン接合部１７を一体的に設け、この弁本体Ａの
キャン接合部１７と前記キャン８とが接合する部分をプ
ロジェクション溶接によって接続固定したことを特徴と
する。In order to achieve the above-mentioned object, in the present invention, a valve body A made of brass material, a needle valve 5 which comes into contact with and separates from a valve seat 3a of the valve body A, and this needle In a flow control valve comprising a can 8 made of a stainless material that seals a valve drive part, a can joint 17 is integrally provided on the valve body A, and the can joint 17 of the valve body A and the can are joined together. 8 is joined and fixed by projection welding.
【００１３】[0013]
【作用】前記構成の流量制御弁によれば、従来の下蓋７
をなくして部品点数を減らすこと、溶接箇所を一箇所に
することができて、製造コストを低減させることができ
る。また、弁本体Ａとキャン８をプロジェクション溶接
することによって、溶接温度の異なる黄銅材の弁本体Ａ
とステンレス材のキャン８を容易且つ正確に接続固定す
ることができ、流量制御弁の品質を向上させることがで
きる。According to the flow control valve having the above construction, the conventional lower lid 7
It is possible to reduce the number of parts by eliminating the above, and to reduce the number of welding points to one, thereby reducing the manufacturing cost. Further, by projection welding the valve body A and the can 8, the valve body A made of brass material having different welding temperatures is used.
The can 8 made of stainless steel can be easily and accurately connected and fixed, and the quality of the flow control valve can be improved.
【００１４】[0014]
【実施例】以下、本発明の一実施例を図１に従い説明す
る。この実施例は電動流量制御弁の適用例であって、そ
の基本的な構造は図４に示す従来のものと同様であるの
で、同一部分に同符号を付して詳細な構成説明は省略す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIG. This embodiment is an application example of the electric flow control valve, and its basic structure is the same as that of the conventional one shown in FIG. 4, so that the same parts are designated by the same reference numerals and detailed description of the structure is omitted. .
【００１５】而して、この実施例においては、黄銅材
（真鍮材）で構成される弁本体Ａにキャン接合部１７を
一体的に設けている。この弁本体Ａのキャン接合部１７
は、キャン８の開口端フランジ部８ｂと接合可能なフラ
ンジ部１７ａを有する下蓋形状（従来の下蓋７と略同様
な形状）をなしている。Thus, in this embodiment, the can joint 17 is integrally provided on the valve body A made of brass material (brass material). This can body 17 of the valve body A
Has a lower lid shape (a shape similar to that of the conventional lower lid 7) having a flange portion 17a that can be joined to the open end flange portion 8b of the can 8.
【００１６】前記キャン８はステンレス材で構成され、
その開口端フランジ部８ｂをキャン接合部１７のフラン
ジ部１７ａに接合し、このフランジ接合部を溶接接続部
Ｙとして、該接続部Ｙがプロジェクション溶接されてい
る。The can 8 is made of stainless steel,
The open end flange portion 8b is joined to the flange portion 17a of the can joint portion 17, and the flange joint portion is used as a welding joint portion Y, and the joint portion Y is projection welded.
【００１７】このようなプロジェクション溶接によっ
て、黄銅材の弁本体Ａとステンレス材のキャン８を接続
固定すると、その溶接時に黄銅材中の主要成分（Ｚn ，
Ｐb 成分）の蒸発がほとんどないため、溶接温度の異な
る黄銅材（弁本体Ａ）とステンレス材（キャン８）を容
易且つ正確に溶接固定することができる。When the brass valve body A and the stainless steel can 8 are connected and fixed by such projection welding, the main components (Zn,
Since there is almost no evaporation of the Pb component), the brass material (valve body A) and the stainless steel material (can 8) having different welding temperatures can be welded and fixed easily and accurately.
【００１８】なお、前記のプロジェクション溶接に際し
て、大電流が必要となるもの（溶接接続部径が大きいも
の）については、キャンフランジ部８ｂの保護のため、
図２に示すようにキャンフランジ部８ｂの上に嵌合当接
可能な鉄製（例えばステンレス製）のリングＸを用い
て、プロジェクション溶接を実施しても良い。For the projection welding described above, which requires a large current (having a large diameter of the welding connection portion), in order to protect the can flange portion 8b,
As shown in FIG. 2, projection welding may be performed using an iron (for example, stainless steel) ring X that can be fitted and abutted on the can flange portion 8b.
【００１９】この場合に採用する鉄製のリングＸは、キ
ャンフランジ部８ｂの厚さと同程度（例えば１mm程度の
厚さ）のものである。更に、キャン接合部１７のフラン
ジ部１７ａとキャンフランジ部８ｂとの接合部を更に体
裁良く保護するためには、前記リングＸの断面形状を図
３に示すようなアングル形（Ｌ形）に構成することも可
能である。The iron ring X used in this case has the same thickness as the can flange 8b (for example, a thickness of about 1 mm). Further, in order to further protect the joint between the flange portion 17a of the can joint portion 17 and the can flange portion 8b, the cross-sectional shape of the ring X is formed into an angle shape (L shape) as shown in FIG. It is also possible to do so.
【００２０】前記実施例では電動流量制御弁において、
弁本体Ａを構成する黄銅材と、キャン８を構成するステ
ンレス材とをプロジェクション溶接する場合について説
明したが、本発明はこれに限らず、他の弁例えば電磁弁
や膨張弁等において、黄銅材の弁本体とステンレス材の
他部品（キャン相当部品）をプロジェクション溶接によ
って接続固定することもできるのは勿論である。In the above embodiment, in the electric flow control valve,
The case where the brass material forming the valve body A and the stainless steel material forming the can 8 are projection welded has been described, but the present invention is not limited to this, and other materials such as solenoid valves and expansion valves can be made of brass material. It is needless to say that the valve body and the other component (corresponding to the can) of the stainless steel can be connected and fixed by projection welding.
【００２１】[0021]
【発明の効果】本発明の流量制御弁は、前述したように
弁本体Ａにキャン接合部１７を一体的に設けたので、従
来の下蓋７をなくして部品点数を減らすこと、溶接箇所
を一箇所にすることができて、製造コストを低減させる
ことができる。As described above, in the flow control valve of the present invention, the can joint portion 17 is integrally provided on the valve body A, so that the conventional lower lid 7 is eliminated to reduce the number of parts, and the welding point is reduced. Since it can be provided in one place, the manufacturing cost can be reduced.
【００２２】また、弁本体Ａとキャン８の接合部をプロ
ジェクション溶接することによって溶接温度の異なる黄
銅材の弁本体Ａとステンレス材のキャン８を容易且つ正
確に接続固定することができ、流量制御弁の品質を向上
させることができる。Further, by projection welding the joint between the valve body A and the can 8, the valve body A of brass material and the can 8 of stainless steel material having different welding temperatures can be easily and accurately connected and fixed, and the flow rate can be controlled. The quality of the valve can be improved.
【図１】本発明の一実施例による電動流量制御弁を開弁
状態で示した中央縦断面図。FIG. 1 is a central longitudinal sectional view showing an electric flow control valve according to an embodiment of the present invention in an open state.
【図２】前記制御弁における弁本体とキャンのプロジェ
クション溶接に際し、鉄製のリングを用いる実施例を示
した要部切欠正面図。FIG. 2 is a cutaway front view of an essential part showing an embodiment in which an iron ring is used in the projection welding of the valve body and the can in the control valve.
【図３】前記のプロジェクション溶接をＬ形断面形状の
鉄製リングを用いて実施する変形例を示した要部断面
図。FIG. 3 is a cross-sectional view of essential parts showing a modified example in which the projection welding is performed using an iron ring having an L-shaped cross section.
【図４】従来の電動流量制御弁を開弁状態で示した中央
縦断面図。FIG. 4 is a central vertical sectional view showing a conventional electric flow control valve in an open state.
Ａ…弁本体、１…弁室、Ｐａ…一次口、Ｐｂ…二次口、
２…二次口側隔壁、３…弁口、３ａ…弁座、５…ニード
ル弁、８…キャン、８ｂ…キャンの開口端フランジ部、
９…ステータコイル、１０…ロータ、１１…スリーブ、
１２…筒状の永久磁石、Ｍ…ステッピングモータ、 Ｂ
…弁作動機構、１７…キャン接合部、１７ａ…フランジ
部、Ｙ…弁本体とキャンの接続部。A ... Valve body, 1 ... Valve chamber, Pa ... Primary port, Pb ... Secondary port,
2 ... Secondary port side partition wall, 3 ... Valve port, 3a ... Valve seat, 5 ... Needle valve, 8 ... Can, 8b ... Can opening end flange portion,
9 ... Stator coil, 10 ... Rotor, 11 ... Sleeve,
12 ... Cylindrical permanent magnet, M ... Stepping motor, B
... Valve actuating mechanism, 17 ... Can joint part, 17a ... Flange part, Y ... Connection part between valve body and can.
Claims (2)
の弁座に接離するニードル弁と、このニードル弁の駆動
部を密閉するステンレス材で構成したキャンとを具備す
る流量制御弁において、前記弁本体にキャン接合部を一
体的に設け、この弁本体のキャン接合部と前記キャンと
が接合する部分をプロジェクション溶接によって接続固
定したことを特徴とする流量制御弁。1. A flow control valve comprising a valve body made of brass material, a needle valve coming into contact with and separating from a valve seat of the valve body, and a can made of stainless steel for sealing a drive part of the needle valve. 2. A flow control valve according to claim 1, wherein a can joint portion is integrally provided on the valve body, and a portion where the can joint portion of the valve body is joined to the can is connected and fixed by projection welding.
の開口端フランジ部と接合可能なフランジ部を有する下
蓋形状をなし、このキャン接合部と前記キャンのフラン
ジ接合部がプロジェクション溶接によって接続固定され
ることを特徴とする請求項１に記載の流量制御弁。2. A can joint portion of the valve body has a lower lid shape having a flange portion that can be joined to an open end flange portion of the can, and the can joint portion and the flange joint portion of the can are connected by projection welding. The flow control valve according to claim 1, wherein the flow control valve is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6224448A JPH0893946A (en) | 1994-09-20 | 1994-09-20 | Flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6224448A JPH0893946A (en) | 1994-09-20 | 1994-09-20 | Flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0893946A true JPH0893946A (en) | 1996-04-12 |
Family
ID=16813938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6224448A Pending JPH0893946A (en) | 1994-09-20 | 1994-09-20 | Flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0893946A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000297873A (en) * | 1999-04-15 | 2000-10-24 | Fuji Koki Corp | Motor-operated valve |
| CN101947687A (en) * | 2010-09-10 | 2011-01-19 | 安徽华星消防设备(集团)有限公司 | Cooling water circulating device of projection welder |
| CN102734526A (en) * | 2011-04-02 | 2012-10-17 | 浙江三花股份有限公司 | Refrigeration system and electric valve |
| CN102853142A (en) * | 2011-06-30 | 2013-01-02 | 浙江三花股份有限公司 | Electric valve |
-
1994
- 1994-09-20 JP JP6224448A patent/JPH0893946A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000297873A (en) * | 1999-04-15 | 2000-10-24 | Fuji Koki Corp | Motor-operated valve |
| CN101947687A (en) * | 2010-09-10 | 2011-01-19 | 安徽华星消防设备(集团)有限公司 | Cooling water circulating device of projection welder |
| CN102734526A (en) * | 2011-04-02 | 2012-10-17 | 浙江三花股份有限公司 | Refrigeration system and electric valve |
| CN102853142A (en) * | 2011-06-30 | 2013-01-02 | 浙江三花股份有限公司 | Electric valve |
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