JPH0561508B2 - - Google Patents
Info
- Publication number
- JPH0561508B2 JPH0561508B2 JP1063793A JP6379389A JPH0561508B2 JP H0561508 B2 JPH0561508 B2 JP H0561508B2 JP 1063793 A JP1063793 A JP 1063793A JP 6379389 A JP6379389 A JP 6379389A JP H0561508 B2 JPH0561508 B2 JP H0561508B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- port
- flow rate
- conical circumferential
- 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.)
- Expired - Fee Related
Links
Landscapes
- Electrically Driven Valve-Operating Means (AREA)
- Magnetically Actuated Valves (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は冷凍装置の電動式膨張弁等として用い
られる電動式コントロールバルブに関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric control valve used as an electric expansion valve or the like in a refrigeration system.
従来の技術
従来における此種のコントロールバルブは、実
開昭59−92263号公報に示される如くに、ニード
ル弁の円錐状周面を弁座に接離させて流路の制御
を行つている。BACKGROUND ART Conventional control valves of this type control the flow path by bringing the conical peripheral surface of the needle valve into contact with and away from the valve seat, as shown in Japanese Utility Model Application No. 59-92263.
第３図において、流入口Ｂが高圧、流出口Ａが
低圧とすると、ニードル弁v′には「下向きの力」
Ｆが働く。力Ｆの大きさは〔面積ａ×差圧（Ｂ−
Ａ）〕であり、ニードル弁を上下させてニードル
弁を開閉させるにはモータはＦの力を発生すれば
良い。モータはネジによつて回転運動を上下運動
に変換している為、「ニードルを動かす力」＝「モ
ータの力（トルク）」となる。 In Figure 3, if the inlet B is at high pressure and the outlet A is at low pressure, there is a downward force on the needle valve v'.
F works. The magnitude of force F is [area a x differential pressure (B-
A)], and in order to move the needle valve up and down to open and close the needle valve, the motor only needs to generate a force of F. Since the motor uses a screw to convert rotational motion into vertical motion, "power to move the needle" = "motor force (torque)".
発明が解決しようとする課題
上記従来の技術にあつては、ニードル弁体に対
して該弁体の形状からして一次口と二次口間にお
ける差圧が必然的に加わり、ステツピング動作す
るパルスモータのトルクに影響する問題があつ
た。Problems to be Solved by the Invention In the above-mentioned conventional technology, a pressure difference between the primary port and the secondary port is inevitably applied to the needle valve body due to the shape of the valve body, and a pulse that performs a stepping operation is generated. There was a problem affecting the torque of the motor.
また、弁閉時においてはニードル弁の円錐状周
面が弁座に食い込み動作するので、比較的に低ト
ルクであるパルスモータを大形化する必要があつ
た。 Furthermore, when the valve is closed, the conical peripheral surface of the needle valve bites into the valve seat, so it is necessary to increase the size of the pulse motor, which has a relatively low torque.
第２図において、流入口Ｂが高圧、流出口Ａが
低圧とすると中間圧Ｃは弁体ｖの均圧孔v1がある
為低圧となる（Ｃ＝Ａ）。ここで弁体ｖに加わる
力を考えると、弁体ｖを上に押す力Fuは「弁体
面積(b)×差圧（Ｂ−Ａ）」となり、弁体ｖを下に
押す力Fdは「弁開口面積(a)×差圧（Ｂ−Ａ）」と
なる。ここで、弁体面積(b)と弁開口面積(a)は等し
く、また低圧Ａと中間圧Ｃは等しいので、Fuと
Fdは等しくなる。 In FIG. 2, if the inlet B is a high pressure and the outlet A is a low pressure, the intermediate pressure C is low because of the pressure equalizing hole v1 of the valve body v (C=A). Considering the force applied to the valve body v here, the force Fu that pushes the valve body v upward is "valve body area (b) x differential pressure (B-A)", and the force Fd that pushes the valve body v downward is The formula is "valve opening area (a) x differential pressure (B-A)". Here, since the valve body area (b) and the valve opening area (a) are equal, and the low pressure A and the intermediate pressure C are equal, Fu and
Fd will be equal.
弁体ｖを上に押す力Fuと弁体を下に押す力Fd
が等しい為、弁体ｖには力が働かないことにな
る。 Force Fu pushing the valve body v upwards and force Fd pushing the valve body downwards
Since they are equal, no force acts on the valve body v.
以上の如く、本発明においては、弁体に対する
一次口と二次口間の差圧による影響を少なくし、
且つ弁閉時に弁体が弁座に喰い込まないように
し、もつて比較的に低トルクであるパルスモータ
により小流量制御用のバルブを正確に動作させる
ようにしたものである。 As described above, in the present invention, the influence of the differential pressure between the primary port and the secondary port on the valve body is reduced,
Furthermore, the valve body is prevented from digging into the valve seat when the valve is closed, and the valve for small flow rate control is accurately operated by a relatively low-torque pulse motor.
課題を解決するための手段
上記の目的を達成するため、本発明において
は、パルスモータで弁体を作動させる可逆型の電
動式コントロールバルブにおいて、一次口と二次
口間の隔壁に弁口を形成し、該弁口を開閉する弁
体の端部に先端を切断した形状の流量制御用円錐
状円周部を設けると共に該流量制御用円錐状円周
部に続いて該弁口内に進入する弁閉用の直状摺動
部を設け、該流量制御用円錐状円周部の端部から
軸方向に延長して弁本体の摺動孔内において開口
する均圧孔を設ける構成を採用した。Means for Solving the Problems In order to achieve the above object, the present invention provides a reversible electric control valve in which a valve body is actuated by a pulse motor, in which a valve port is provided in a partition wall between a primary port and a secondary port. A conical circumferential portion for controlling flow rate having a cut-off shape is provided at the end of the valve body that opens and closes the valve port, and the conical circumferential portion for controlling flow rate enters into the valve port following the conical circumferential portion for controlling flow rate. A configuration is adopted in which a straight sliding part is provided for closing the valve, and a pressure equalizing hole is provided that extends in the axial direction from the end of the conical circumferential part for controlling the flow rate and opens in the sliding hole of the valve body. .
実施例
本発明にかかる電動式コントロールバルブは、
バルブ部Ｖとステツピング動作するパルスモータ
部Ｍより成る。バルブ部Ｖにおいて、弁本体１の
一次口１ａと二次口１ｂ間の隔壁２において該二
次口１ｂを形成する円形横穴１ｄに対して直交す
る円形の縦穴として弁口２ａが設けられ、該弁口
２ａに対して弁体３が進退するもので、該弁体３
は該二次口１ｂ側において弁本体１に螺着された
雄螺子管４内において軸方向に摺動自在に指示さ
れている。この電動式コントロールバルブは一次
口１ａと二次口１ｂ内において流路が実線矢符と
これを逆方向の点線矢符で示される如くに可逆型
である。Embodiment The electric control valve according to the present invention includes:
It consists of a valve section V and a pulse motor section M that performs stepping operation. In the valve part V, a valve port 2a is provided as a circular vertical hole orthogonal to a circular horizontal hole 1d forming the secondary port 1b in the partition wall 2 between the primary port 1a and the secondary port 1b of the valve body 1. The valve body 3 moves forward and backward with respect to the valve port 2a, and the valve body 3
is freely slidable in the axial direction within a male threaded tube 4 screwed onto the valve body 1 on the side of the secondary port 1b. This electrically operated control valve is of a reversible type, with flow paths in the primary port 1a and secondary port 1b shown by solid line arrows and dotted line arrows in the opposite direction.
弁本体１の上部には雄螺子管４を中心にした状
態において下蓋５が設けられ、該下蓋５上にパル
スモータ部Ｍにおける密閉型ケース６が固定され
る。ケース６の外周部にはコイル７を内蔵したス
テータ８が設けられる。ケース６内においてロー
タ９が上記雄螺子管４により回動自在に支持して
設けられる。ロータ９は支持筒１０の外周部に同
じく筒状の永久磁石１１を嵌合してから上縁部１
０ａを該永久磁石１１上に拡開して両者を一体化
したものであり、支持筒１０の内側下方に嵌合固
定した雌螺子管１２を前記雄螺子管４に螺合して
回動且つ軸方向に移動可能に設けられている。 A lower lid 5 is provided on the upper part of the valve body 1 with the male screw tube 4 in the center, and a closed case 6 of the pulse motor section M is fixed onto the lower lid 5. A stator 8 having a built-in coil 7 is provided on the outer periphery of the case 6. A rotor 9 is rotatably supported within the case 6 by the male threaded tube 4. The rotor 9 is constructed by fitting a cylindrical permanent magnet 11 to the outer periphery of the support cylinder 10, and then attaching the upper edge 1
0a is extended over the permanent magnet 11 to integrate the two, and a female screw tube 12 fitted and fixed inside the support tube 10 is screwed into the male screw tube 4 to rotate and rotate. It is provided so as to be movable in the axial direction.
支持筒１０内の軸方向の中間部には連結壁１０
ｂが形成され、その孔１０ｃに弁体３の小径部３
ａを挿通した後Ｅリング１３にて止着している。
弁体３の小径部３ａには圧着コイルバネ１４がそ
の段部３ｂと連結壁１０ｂとの間において捲装さ
れている。 A connecting wall 10 is provided in the axially intermediate portion of the support tube 10.
b is formed, and the small diameter portion 3 of the valve body 3 is inserted into the hole 10c.
After inserting the hole a, it is fixed with an E ring 13.
A compression coil spring 14 is wound around the small diameter portion 3a of the valve body 3 between the stepped portion 3b and the connecting wall 10b.
ロータ９の上部において、ケース６に止着した
心棒１５に螺旋状案内リング１６が捲装され、該
螺旋状案内リング１６に対してスライダー１７が
回動且つ上下動自在に係合しており、該スライダ
ー１７の外端はロータ９に立設した係止杆１８に
係合している。ステータ８のコイル７に通電する
とロータ９が回転し、ロータ９の回転に応じてス
ライダー１７が螺旋状案内リング１６に沿つて上
下動し、その上下端１６ａ，１６ｂに衝合した位
置でロータ９の回動並びに弁体３の移動を停止す
る。 In the upper part of the rotor 9, a spiral guide ring 16 is wrapped around a shaft 15 fixed to the case 6, and a slider 17 is engaged with the spiral guide ring 16 so as to be rotatable and vertically movable. The outer end of the slider 17 engages with a locking rod 18 erected on the rotor 9. When the coil 7 of the stator 8 is energized, the rotor 9 rotates, and the slider 17 moves up and down along the spiral guide ring 16 in accordance with the rotation of the rotor 9. The rotation of the valve body 3 and the movement of the valve body 3 are stopped.
弁体３は端部において先端を切断した形状の流
量制御用円錐状円周部３ｃを有し、これに続いて
外径が弁口２ａの口径と略一致する直状摺動部３
ｄを有している。弁体３は弁閉時において、第１
図に示される如く、弁閉用の直状摺動部３ｄが弁
口２ａ内に深く進入することにより弁漏れを小さ
くしている。 The valve body 3 has a conical circumferential part 3c for flow rate control with a cut-off tip at its end, followed by a straight sliding part 3 whose outer diameter substantially matches the diameter of the valve port 2a.
It has d. When the valve body 3 is closed, the first
As shown in the figure, the valve-closing straight sliding portion 3d penetrates deeply into the valve port 2a, thereby reducing valve leakage.
弁体３の中心部には端部から軸方向に延長して
弁本体１の摺動孔１ｃ内において開口する均圧孔
３ｅが形成されており、これによつて一次口１ａ
と二次口１ｂ間における差圧が弁体３に及ぼす力
を小さくしている。 A pressure equalizing hole 3e is formed in the center of the valve body 3, extending in the axial direction from the end and opening in the sliding hole 1c of the valve body 1, thereby forming a primary port 1a.
The force exerted on the valve body 3 by the pressure difference between the valve body and the secondary port 1b is reduced.
本発明は上記した如くに、パルスモータで弁体
を作動させる可逆型の電動式コントロールバルブ
において、一次口と二次口間の隔壁に弁口を形成
し、該弁口を開閉する弁体の端部に先端を切断し
た形状の流量制御用円錐状円周部を設けると共に
該流量制御用円錐状円周部に続いて該弁口内に進
入する弁閉用の直状摺動部を設け、該流量制御用
円錐状円周部の端部から軸方向に延長して弁本体
の摺動孔内において開口する均圧孔を設けて成る
ものであるから、一次口と二次口間の差圧がニー
ドル弁体に及ぼす影響を小さくすることによつて
パルスモータの回動作動にムラが生ずることがな
いと共に弁閉時において弁体が弁座に食い込み動
作をしないことにより低トルクのパルスモータに
より正確な流量制御ができ、可逆冷凍サイクル等
の可逆流路における差圧に対処しつつその流体制
御に有益である。 As described above, the present invention is a reversible electric control valve whose valve body is actuated by a pulse motor, in which a valve port is formed in a partition wall between a primary port and a secondary port, and a valve body that opens and closes the valve port is provided. A conical circumferential part for controlling flow rate having a cut-off shape is provided at the end, and a straight sliding part for closing the valve that enters into the valve port following the conical circumferential part for controlling flow rate, Since a pressure equalizing hole is provided that extends in the axial direction from the end of the conical circumferential portion for flow rate control and opens in the sliding hole of the valve body, the difference between the primary port and the secondary port is By reducing the influence of pressure on the needle valve element, there is no unevenness in the rotational movement of the pulse motor, and the valve element does not bite into the valve seat when the valve is closed, resulting in a low-torque pulse motor. This enables more accurate flow rate control, and is useful for fluid control while dealing with differential pressure in a reversible flow path such as a reversible refrigeration cycle.
第１図は本発明の一実施例についての縦断面
図、第２図は本発明の原理を示す説明図、第３図
は従来例の説明図である。
１……弁本体、１ａ……一次口、１ｂ……二次
口、１ｃ……摺動孔、２……隔壁、２ａ……弁
口、３……弁体、３ｃ……流量制御用円錐状円周
部、３ｅ……均圧孔。
FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the principle of the present invention, and FIG. 3 is an explanatory diagram of a conventional example. 1... Valve body, 1a... Primary port, 1b... Secondary port, 1c... Sliding hole, 2... Partition wall, 2a... Valve port, 3... Valve body, 3c... Cone for flow rate control shaped circumferential portion, 3e...pressure equalization hole.
Claims (1)
動式コントロールバルブにおいて、一次口と二次
口間の隔壁に弁口を形成し、該弁口を開閉する弁
体の端部に先端を切断した形状の流量制御用円錐
状円周部を設けると共に該流量制御用円錐状円周
部に続いて該弁口内に進入する弁閉用の直状摺動
部を設け、該流量制御用円錐状円周部の端部から
軸方向に延長して弁本体の摺動孔内において開口
する均圧孔を設けて成ることを特徴とする電動式
コントロールバルブ。1. In a reversible electric control valve whose valve body is operated by a pulse motor, a valve port is formed in the partition wall between the primary port and the secondary port, and the tip is cut at the end of the valve body that opens and closes the valve port. A conical circumferential portion for controlling flow rate is provided, and a straight sliding portion for closing the valve that enters into the valve port following the conical circumferential portion for controlling flow rate is provided, and the conical circumferential portion for controlling flow rate is provided. An electric control valve characterized in that a pressure equalizing hole is provided that extends in the axial direction from an end of a peripheral portion and opens in a sliding hole of a valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6379389A JPH0242286A (en) | 1989-03-17 | 1989-03-17 | electric control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6379389A JPH0242286A (en) | 1989-03-17 | 1989-03-17 | electric control valve |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986485A Division JPS61180077A (en) | 1985-02-06 | 1985-02-06 | Motor-driven control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0242286A JPH0242286A (en) | 1990-02-13 |
| JPH0561508B2 true JPH0561508B2 (en) | 1993-09-06 |
Family
ID=13239611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6379389A Granted JPH0242286A (en) | 1989-03-17 | 1989-03-17 | electric control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0242286A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10160023A (en) * | 1996-11-28 | 1998-06-16 | Pacific Ind Co Ltd | Motor operated valve |
| WO2005073604A1 (en) * | 2004-01-30 | 2005-08-11 | Kabushiki Kaisha Saginomiya Seisakusho | Double seat valve |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5658654B2 (en) * | 2011-12-27 | 2015-01-28 | 株式会社鷺宮製作所 | Control valve |
| JP6392685B2 (en) * | 2015-03-06 | 2018-09-19 | 株式会社鷺宮製作所 | Motorized valve |
| JP6240243B2 (en) * | 2016-03-07 | 2017-11-29 | 株式会社鷺宮製作所 | Motorized valve and motorized valve manufacturing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5682359U (en) * | 1979-11-29 | 1981-07-03 |
-
1989
- 1989-03-17 JP JP6379389A patent/JPH0242286A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10160023A (en) * | 1996-11-28 | 1998-06-16 | Pacific Ind Co Ltd | Motor operated valve |
| WO2005073604A1 (en) * | 2004-01-30 | 2005-08-11 | Kabushiki Kaisha Saginomiya Seisakusho | Double seat valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0242286A (en) | 1990-02-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |