JP2002195428A - Diaphragm type solenoid valve - Google Patents

Diaphragm type solenoid valve

Info

Publication number
JP2002195428A
JP2002195428A JP2000396991A JP2000396991A JP2002195428A JP 2002195428 A JP2002195428 A JP 2002195428A JP 2000396991 A JP2000396991 A JP 2000396991A JP 2000396991 A JP2000396991 A JP 2000396991A JP 2002195428 A JP2002195428 A JP 2002195428A
Authority
JP
Japan
Prior art keywords
diaphragm
valve
fluid
moving core
solenoid 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.)
Granted
Application number
JP2000396991A
Other languages
Japanese (ja)
Other versions
JP3657878B2 (en
Inventor
Hisashi Abe
久志 阿部
Tsunehiro Hayashi
常弘 林
Hidemitsu Ooka
秀充 大岡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shinwa Controls Co Ltd
Original Assignee
Shinwa Controls Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shinwa Controls Co Ltd filed Critical Shinwa Controls Co Ltd
Priority to JP2000396991A priority Critical patent/JP3657878B2/en
Publication of JP2002195428A publication Critical patent/JP2002195428A/en
Application granted granted Critical
Publication of JP3657878B2 publication Critical patent/JP3657878B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Magnetically Actuated Valves (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a diaphragm type solenoid valve capable of preventing the leak of a fluid when the valve is closed and expecting energy saving and miniaturization by solving such a problem of the conventional diaphragm type solenoid valve that a diaphragm has a flat disk shape, thus a pressure applied to the lower face of the diaphragm from a liquid sump above an outflow hole is instantaneously increased to push up a moving core, and the fluid flows back to the side of an inflow hole from the outflow hole side and is leaked. SOLUTION: An annular downward gusset 33 freely movable in the vertical direction in the liquid sump 31 after the movement of the moving core 23c is provided at a portion between the center section and the outer peripheral edge of a diaphragm 29 provided in a valve body 21 so that the pressure receiving area of the diaphragm 29 is reduced by the downward gusset 33 to prevent the moving core 23c from generating a pushing-up force even if the pressure applied to the lower face of the diaphragm 29 from the liquid sump 31 above the outflow hole 27 is momentarily increased when the valve is closed.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、弁本体下部の流体
流路と上部の電磁ソレノイドとの間にダイヤフラムを区
画配置して、上部の電磁ソレノイドを構成する部分の金
属部品が流体による腐食の影響を受けることを防止した
ダイヤフラム型電磁弁の改良に関するものである。
BACKGROUND OF THE INVENTION The present invention relates to a fuel cell system in which a diaphragm is partitioned between a fluid flow path below a valve body and an upper electromagnetic solenoid so that metal parts constituting the upper electromagnetic solenoid are not corroded by fluid. The present invention relates to an improvement of a diaphragm type solenoid valve which is prevented from being affected.

【0002】[0002]

【従来の技術】従来より、医療機器や各種分析機器内及
びその周辺部に設けられる電磁弁には、電磁ソレノイド
を構成する部分の金属部品が、弁本体内に流れる流体、
特に薬液などと接触して腐食されることを防止するため
に、例えば、実開平6−28452号,特開平10−1
22415号に開示されているように、流体流路と電磁
ソレノイドとの間にダイヤフラムを装着する電磁弁が使
用されている。
2. Description of the Related Art Conventionally, a solenoid valve provided in a medical device or various analytical devices and a peripheral portion thereof is provided with a metal part constituting an electromagnetic solenoid, a fluid flowing through a valve body,
Particularly, in order to prevent corrosion due to contact with a chemical solution or the like, see, for example, Japanese Utility Model Application Laid-Open No. 6-28452, and
As disclosed in U.S. Pat. No. 22,415, an electromagnetic valve is used which mounts a diaphragm between a fluid flow path and an electromagnetic solenoid.

【0003】図7は、従来におけるこの種の標準的な電
磁弁の閉弁時の構成を示し、図8は同じく開弁時の構成
を示している。図7において、1は弁本体、2は電磁ソ
レノイド、3はコイル、4は移動コアであって、弁本体
1は流入孔5とオリフィス6と流出孔7とを有してい
る。弁本体1のオリフィス6と移動コア4の下端との間
に、ダイヤフラム9が、外周縁9bを弁本体1とグラン
ド8とにより挟着し、中央部9aの上面を移動コア4の
下端と接続するようにして取り付けられている。
FIG. 7 shows the configuration of a conventional standard solenoid valve of this type when the valve is closed, and FIG. 8 also shows the configuration when the valve is opened. In FIG. 7, 1 is a valve body, 2 is an electromagnetic solenoid, 3 is a coil, 4 is a moving core, and the valve body 1 has an inlet 5, an orifice 6, and an outlet 7. Between the orifice 6 of the valve body 1 and the lower end of the movable core 4, a diaphragm 9 clamps the outer peripheral edge 9b between the valve body 1 and the ground 8, and connects the upper surface of the central portion 9a to the lower end of the movable core 4. It is attached so that it.

【0004】電磁ソレノイド2のコイル3に通電されな
い状態では、図7のように、移動コア4は下方に降下す
るので、ダイヤフラム9の中央部9aを接続した移動コ
ア4の下端の移動コア頭部10が、オリフィス6の上端
に圧着され、ポートBから流入孔5へ流入している流体
の流れを遮断する。
When the coil 3 of the electromagnetic solenoid 2 is not energized, the moving core 4 descends as shown in FIG. 7, so that the moving core 4 at the lower end of the moving core 4 to which the central portion 9a of the diaphragm 9 is connected. 10 is pressed against the upper end of the orifice 6 to block the flow of the fluid flowing from the port B into the inflow hole 5.

【0005】電磁ソレノイド2のコイル3に通電される
と、固定コアに発生する電磁力によって、図8のように
移動コア4が上昇し、ダイヤフラム9の中央部9aを接
続した移動コア4の下端の移動コア頭部10が、オリフ
ィス6の上端から引き上げられて分離するので、流入孔
5内の流体はオリフィス6の外周方向へ流れて流出孔7
からポートAの方向へ流れる。
When the coil 3 of the electromagnetic solenoid 2 is energized, the moving core 4 rises as shown in FIG. 8 by the electromagnetic force generated in the fixed core, and the lower end of the moving core 4 connected to the central portion 9a of the diaphragm 9 is connected. Of the moving core is lifted up from the upper end of the orifice 6 and separated, so that the fluid in the inflow hole 5 flows toward the outer periphery of the orifice 6 and flows out of the outflow hole 7.
From port A to port A.

【0006】また、前記ダイヤフラム9は、中央部9a
下面が、移動コア4の下端の頸部10aをもった移動コ
ア頭部10を包み込むようにして移動コア4の下端に接
続され、また、断面半円形のフランジを設けた外周縁9
bが、弁本体1内の溝1aに嵌合されるようにして弁本
体1に取付けられるので、従来の電磁弁に取付けられる
ダイヤフラムは、中央部と外周縁との間が偏平な円盤状
に形成されている。
The diaphragm 9 has a central portion 9a.
The lower surface is connected to the lower end of the moving core 4 so as to enclose the moving core head 10 having the neck 10a at the lower end of the moving core 4, and has an outer peripheral edge 9 provided with a flange having a semicircular cross section.
b is fitted to the valve body 1 so as to fit into the groove 1 a in the valve body 1, so that the diaphragm attached to the conventional solenoid valve has a flat disk shape between the central portion and the outer peripheral edge. Is formed.

【0007】[0007]

【発明が解決すべき課題】従来におけるダイヤフラム型
電磁弁では、上記のように弁本体1に偏平な円盤状のダ
イヤフラム9が使用されるので、移動コア頭部10を閉
じて流入孔5内の流体がオリフィス6の外周方向へ流れ
る状態を遮断したのにもかかわらず、流入孔5内の一部
の流体がオリフィス6の外周方向へ流れて漏洩するとい
う問題が指摘されている。その原因は次のような理由に
よる。
In the conventional diaphragm type solenoid valve, since the flat disk-shaped diaphragm 9 is used for the valve body 1 as described above, the moving core head 10 is closed and the inside of the inflow hole 5 is closed. A problem has been pointed out in that a part of the fluid in the inflow hole 5 flows toward the outer periphery of the orifice 6 and leaks despite the fact that the fluid is blocked from flowing toward the outer periphery of the orifice 6. The reason is as follows.

【0008】移動コア頭部10が開かれて、流体が流入
孔5から流出孔7の方向へ流れている状態から、今度は
移動コア頭部10を閉じて、流入孔5から流出孔7へ流
れる流体を遮断した時、流入孔5のあるポートB側内の
流体は圧力を有している。つまり、流入孔5の部分に
は、 流入流体の圧力×流入孔断面積・・・(1) の大きさの流体力が上向きに作用している。
From the state where the moving core head 10 is opened and the fluid is flowing in the direction from the inflow hole 5 to the outflow hole 7, the moving core head 10 is closed, and the fluid is moved from the inflow hole 5 to the outflow hole 7. When the flowing fluid is shut off, the fluid in the port B side having the inflow hole 5 has a pressure. That is, a fluid force having a magnitude of (pressure of inflow fluid × inflow hole cross-sectional area) (1) acts on the inflow hole 5 in an upward direction.

【0009】さらに、流体で満たされたポートA側の流
出孔7には、流入側の有している流体圧力よりは若干減
少した流体圧力が存在するから、 流出流体の圧力×流出孔断面積・・・(2) の大きさの流体力が上向きに作用している。そして、流
出側の流体力は、図8に示した液溜り11を経て、液溜
り11に対向する部所のダイヤフラム9に作用する。
[0009] Further, in the outlet hole 7 on the port A side filled with fluid, there is a fluid pressure slightly lower than the fluid pressure of the inflow side. (2) The fluid force having the magnitude of (2) is acting upward. Then, the fluid force on the outflow side passes through the liquid reservoir 11 shown in FIG. 8 and acts on the diaphragm 9 at a location facing the liquid reservoir 11.

【0010】前記の流出側の上向き流体力は、流体圧力
と液溜り11に対向する部所のダイヤフラム9の面積
(以下、液溜り部の受圧面積という)との積に等しい。
ところが、図7に示すように、その部分のダイヤフラム
9の上部に位置する空間Sは、上方の電磁ソレノイド2
を介して大気と通じており、圧力は大気圧力となってい
る。
The upward fluid force on the outflow side is equal to the product of the fluid pressure and the area of the diaphragm 9 facing the liquid reservoir 11 (hereinafter referred to as the pressure receiving area of the liquid reservoir).
However, as shown in FIG. 7, the space S located above the diaphragm 9 in that portion is the upper electromagnetic solenoid 2.
Through the atmosphere, and the pressure is atmospheric pressure.

【0011】従って、前記の空間Sと対向する部所のダ
イヤフラム9の面積(以下、空間Sの受圧面積という)
に大気圧力が作用する。しかし、通常は、流出流体の圧
力の方が大きいため、 流出流体の圧力×液溜り部の受圧面積 −大気圧力×空間S部分の受圧面積・・・(3) の力が上向きに作用する。
Accordingly, the area of the diaphragm 9 facing the space S (hereinafter referred to as the pressure receiving area of the space S)
Is affected by atmospheric pressure. However, since the pressure of the outflow fluid is usually higher, the force of (outflow fluid pressure) × (pressure receiving area of liquid reservoir) − (atmospheric pressure) × pressure receiving area of space S (3) acts upward.

【0012】そのため、前記(1)式(3)式で表され
る上向き合力により、図8に示すように、移動コア4が
上方へ押し上げられることになって、ポートBからポー
トAへ向けて流体が漏洩することになる。その時、ダイ
ヤフラム9は上方の空間Sの側へ向けて膨らむように反
り返ることになる。
As a result, the moving core 4 is pushed upward by the upward resultant force expressed by the above-mentioned equations (1) and (3), as shown in FIG. The fluid will leak. At that time, the diaphragm 9 warps so as to expand toward the upper space S.

【0013】一方、前記と同様に移動コア頭部10が閉
じられて、流入孔5から流出孔7の方向へ流れる流体が
遮断された状態において、流入孔5側の流体圧力が消滅
した場合には、同じく前記の(1)式(3)式で表され
る上向きの合力によって、移動コア4が上方へ押し上げ
られ、ポートAからポートBに向かって流体が逆流漏洩
することになる。
On the other hand, when the fluid pressure on the side of the inflow hole 5 disappears in a state where the moving core head 10 is closed and the fluid flowing from the inflow hole 5 to the outflow hole 7 is shut off in the same manner as described above. As a result, the moving core 4 is pushed upward by the upward resultant force expressed by the above-described formulas (1) and (3), and the fluid leaks backward from the port A to the port B.

【0014】上記のように、従来のダイヤフラム型電磁
弁では、閉弁後に流体の漏洩が生ずるという問題があ
り、その対策として、移動コア4を作動するスプリング
にバネ力の強いものを使用することが行われているが、
スプリングにバネ力の強いものを使用すると同時に、コ
イルも大きな磁力が得られるものを使用しなければなら
ないという問題があり、その結果、このような解決策で
は電磁ソレノイドの消費電力が増加し、小型化、省エネ
ルギー化という要請に応じられないという課題を有して
いる。
As described above, in the conventional diaphragm type solenoid valve, there is a problem that the fluid leaks after the valve is closed. As a countermeasure, a spring having a strong spring force is used as the spring for operating the moving core 4. Has been done,
At the same time as using a spring with a strong spring force, there is a problem that the coil must be one that can obtain a large magnetic force.As a result, such a solution increases the power consumption of the electromagnetic solenoid and reduces the size of the coil. It has a problem that it cannot meet the demand for energy saving and energy saving.

【0015】[0015]

【課題を解決するための手段】本発明は、上記のような
従来におけるダイヤフラム型電磁弁の問題点に鑑み、液
溜り部から圧力を受けるダイヤフラムの受圧面積を小さ
くして、流体によるダイヤフラムの押し上げ力を減少さ
せることによって、閉弁時における流体の漏洩を適切に
防止でき、同時に電磁弁自体の小型化と省エネルギー化
とを期待できるダイヤフラム型電磁弁の提供を目的とす
る。
SUMMARY OF THE INVENTION In view of the above-mentioned problems of the conventional diaphragm type solenoid valve, the present invention reduces the pressure receiving area of the diaphragm which receives pressure from the liquid reservoir and pushes up the diaphragm by a fluid. An object of the present invention is to provide a diaphragm-type solenoid valve capable of appropriately preventing fluid leakage when the valve is closed by reducing the force, and at the same time, expecting a reduction in size and energy saving of the solenoid valve itself.

【0016】本発明はそのための具体的手段として、弁
本体内の液溜りと電磁ソレノイドとの間に、流体の電磁
ソレノイド方向への侵入を防止するためのダイヤフラム
を配置したダイヤフラム型電磁弁において、ダイヤフラ
ムの中央部と外周縁との間に、電磁ソレノイドにおける
移動コアの動きに追随して液溜り内を上下方向へ自在に
移動可能な環状の下向き襞を備えていることを特徴とす
る。
According to the present invention, there is provided a diaphragm-type solenoid valve in which a diaphragm is disposed between a liquid reservoir in a valve body and an electromagnetic solenoid to prevent fluid from entering the electromagnetic solenoid. An annular downward fold is provided between the central portion of the diaphragm and the outer peripheral edge, the annular downward fold being movable up and down in the liquid reservoir following movement of the movable core in the electromagnetic solenoid.

【0017】移動コアの動きに追随して液溜り内を上下
方向へ自在に移動する下向き襞としては、基本的には全
体が環状に連続するような状態で突出したものであるこ
とが好ましいが、下向き襞としては、必ずしも全体が環
状に連続したものでなくともよく、互いに間隔をおいて
環状に配列された複数個の部分的な下向き襞からなって
いるものであってもよい。
It is preferable that the downward fold, which freely moves up and down in the liquid reservoir following the movement of the movable core, basically protrudes in a state where the whole is annularly continuous. The downward folds may not necessarily be entirely continuous annularly, but may be a plurality of partial downward folds arranged annularly at intervals from each other.

【0018】ダイヤフラムに前記のような下向き襞を設
けると、これによって流体によるダイヤフラムの押し上
げ力を減少させて、閉弁時における流体の漏洩を防止す
ることができるが、流体によるダイヤフラムの押し上げ
力を確実に減少させることのできる補助的手段として、
弁本体内におけるダイヤフラムの上方に、ダイヤフラム
における下向き襞の上向き開口溝内に挿入される突起を
設けておくことが好ましい。
If the diaphragm is provided with the downward folds as described above, the pushing-up force of the diaphragm by the fluid can be reduced to prevent the leakage of the fluid at the time of closing the valve, but the pushing-up force of the diaphragm by the fluid can be reduced. As an auxiliary measure that can be reliably reduced,
It is preferable to provide a projection above the diaphragm in the valve body, which is inserted into the upward opening groove of the downward fold of the diaphragm.

【0019】[0019]

【作用】弁本体における液溜りと電磁ソレノイドとの間
に設けられるダイヤフラムとして、中央部と外周縁との
中間部に下向きに突出した環状の襞を設けると、この下
向き襞が電磁ソレノイドにおける移動コアの動きに追随
して、液溜り内を上下方向へ自在に移動可能であると共
に、下向き襞の下端部が液溜り部から圧力を受けること
になるため、液溜り部から圧力を受けるダイヤフラムの
受圧面積を、従来のダイヤフラムのような平面なものと
比較して小さくすることができ、その結果、液溜り部か
ら上向きに作用する流体圧力を著しく減少して、移動コ
アの押し上げによる流体の漏洩を防止する。
When a downwardly protruding annular fold is provided in the middle between the central portion and the outer peripheral edge as a diaphragm provided between the liquid reservoir in the valve body and the electromagnetic solenoid, the downward fold forms a moving core in the electromagnetic solenoid. Following the movement of the diaphragm, it is possible to move freely in the liquid reservoir in the vertical direction, and the lower end of the downward fold receives pressure from the liquid reservoir, so that the diaphragm receives pressure from the liquid reservoir. The area can be reduced as compared with a flat surface such as a conventional diaphragm.As a result, the fluid pressure acting upward from the liquid reservoir is significantly reduced, and the leakage of the fluid due to the lifting of the moving core is reduced. To prevent.

【0020】また、弁本体内におけるダイヤフラムの上
方に、下向き襞の上向き開口溝内に挿入される突起を設
けた場合、下向き襞はその突起が挿着されたままの状態
でも、移動コアの動きに追随して液溜り内を上下方向へ
自由に移動できるので、ダイヤフラムとしての機能を発
揮しつつ、この突起が液溜り部から上向きに作用する流
体圧力に抵抗して、流体によるダイヤフラムの押し上げ
力を確実に解消させる補助的な役割を果たす。
When a projection inserted into the upward opening groove of the downward fold is provided above the diaphragm in the valve body, the downward fold can move the moving core even if the projection remains inserted. The protrusions can freely move up and down in the liquid reservoir following the surface of the liquid reservoir, so that the protrusions resist the fluid pressure acting upward from the liquid reservoir while exerting the function of the diaphragm. Plays an auxiliary role to ensure that

【0021】[0021]

【発明の実施の形態】次に本発明に係るダイヤフラム型
電磁弁の構成を、図面に示す実施例により説明すると、
図1は電磁弁の全体の構成を示す断面図であって、21
は弁本体、22は電磁ソレノイド、23aはコイル、2
3bは固定コア、23cは移動コア、24はスプリング
であって、弁本体21は流入孔25とオリフィス26と
流出孔27とを有している。弁本体21のオリフィス2
6と移動コア23c下端の移動コア頭部30との間に、
ダイヤフラム29が、外周縁29bを弁本体21とグラ
ンド28とにより挟着し、中央部29aを移動コア23
cの下端と接続するようにして取り付けられている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of a diaphragm type solenoid valve according to the present invention will be described below with reference to an embodiment shown in the drawings.
FIG. 1 is a cross-sectional view showing the entire configuration of the solenoid valve.
Is a valve body, 22 is an electromagnetic solenoid, 23a is a coil, 2
3b is a fixed core, 23c is a movable core, 24 is a spring, and the valve body 21 has an inflow hole 25, an orifice 26, and an outflow hole 27. Orifice 2 of valve body 21
6 and the moving core head 30 at the lower end of the moving core 23c,
The diaphragm 29 clamps the outer peripheral edge 29b between the valve body 21 and the gland 28, and moves the central portion 29a to the movable core 23.
c so as to be connected to the lower end thereof.

【0022】流体は、矢印で示すように、ポートBから
流入孔25を経て、オリフィス26の外周の液溜り31
から流出孔27を通ってポートAの方向へ流れる。ダイ
ヤフラム29の中央部は、移動コア23c下端の移動コ
ア頭部30を包み込むようにして移動コア23cと一体
に接続され、また、ダイヤフラム29の外周縁は、断面
半円形のフランジ29bが係止溝32内に嵌め込まれ、
その上方にグランド28を配置することで弁本体21内
に取り付けられている。
The fluid flows from the port B through the inflow hole 25 as shown by the arrow, and the liquid pool 31 on the outer periphery of the orifice 26.
Flows through the outlet hole 27 in the direction of the port A. The central portion of the diaphragm 29 is integrally connected to the moving core 23c so as to wrap the moving core head 30 at the lower end of the moving core 23c, and the outer peripheral edge of the diaphragm 29 is formed by a flange 29b having a semicircular cross section. 32
The gland 28 is disposed above the gland 28 so that the gland 28 is mounted in the valve body 21.

【0023】前記ダイヤフラム29は、中央部29aと
外周縁フランジ29bとの間の前記液溜り31と対向す
る部分の膜板の一部が、下方に位置する液溜り31内へ
向けて断面U字状に大きく垂れ下がるように下向きに突
出された環状の襞33を有している。図2に示すよう
に、この下向きに突出された断面U字状の襞33の厚さ
Dは、オリフィス26の外周における液溜り31の内側
幅Eよりも小さく、従って、この下向き襞33は、移動
コアの23cの上下動に追随して、液溜り31内を上下
方向へ自在に移動できるようになっている。
The diaphragm 29 has a U-shaped cross-section in which a part of the membrane plate facing the liquid reservoir 31 between the central portion 29a and the outer peripheral flange 29b faces the liquid reservoir 31 located below. It has an annular fold 33 protruding downward so as to hang largely in a shape. As shown in FIG. 2, the thickness D of the downwardly protruding fold 33 having a U-shaped cross section is smaller than the inner width E of the liquid pool 31 on the outer periphery of the orifice 26. The inside of the liquid reservoir 31 can be freely moved in the vertical direction following the vertical movement of the moving core 23c.

【0024】また、下向き襞33としては、基本的には
図2及び図4に示すように、全体が環状に連続するよう
な状態で突出したものであることが好ましいが、下向き
襞33としては、必ずしも全体が環状に連続したもので
なくともよく、図6に示すように、下向き襞が、複数個
の部分的に設けられた下向き襞43を互いに間隔をおい
て環状に配列したものであってもよい。
As shown in FIGS. 2 and 4, it is preferable that the downward fold 33 basically protrudes in a state where the whole is continuous in an annular shape. 6, the downward fold may be a plurality of partially provided downward folds 43 arranged at intervals from each other in an annular manner as shown in FIG. You may.

【0025】一方、ダイヤフラム29の外周縁を、係止
溝32との間で弁本体21に挟着固定するためのグラン
ド28は、外周縁に前記ダイヤフラム29における下向
き襞33の上向き開口溝33a内に挿入されるための突
起34が設けられている。この突起34は、図2に示す
ように、移動コア23cが下降して移動コア頭部30が
オリフィス26を閉じる閉弁時においては、下向き襞3
3の上向き開口溝33a内に浅く挿入されており、反対
に、図3のように、移動コア23cが上昇して移動コア
頭部30がオリフィス26から離れる開弁時において
は、下向き襞33の上向き開口溝33a内に深く挿入さ
れる。なお、図6のように、ダイヤフラム29に複数個
の部分的な下向き襞43を環状に配列したものでは、上
向き開口溝内に挿入される突起44も下向き襞43と同
数とする。
On the other hand, a gland 28 for sandwiching and fixing the outer peripheral edge of the diaphragm 29 to the valve main body 21 with the locking groove 32 is provided on the outer peripheral edge in the upward opening groove 33a of the downward fold 33 of the diaphragm 29. Is provided. As shown in FIG. 2, when the movable core 23c is lowered and the movable core head 30 closes the orifice 26 as shown in FIG.
3 is inserted shallowly into the upward opening groove 33a. Conversely, as shown in FIG. 3, when the movable core 23c rises and the movable core head 30 separates from the orifice 26, the downward fold 33 is closed. It is inserted deeply into the upward opening groove 33a. As shown in FIG. 6, when a plurality of partial downward folds 43 are annularly arranged on the diaphragm 29, the number of projections 44 inserted into the upward opening grooves is also the same as the number of the downward folds 43.

【0026】下向き襞33の深さは、前記グランド28
の突起34の長さに移動コア23cの移動距離を加えた
長さよりも大きいが、液溜り31の深さよりも小さいよ
うに設定される。
The depth of the downward fold 33 depends on the ground 28
Is set to be larger than the sum of the length of the projection 34 and the moving distance of the moving core 23c, but smaller than the depth of the liquid pool 31.

【0027】[0027]

【発明の効果】本発明のダイヤフラム型電磁弁では、弁
本体に設けるダイヤフラムの中央部と外周縁との間の部
分に、下方の液溜り方向へ突出する下向き襞を設けたの
で、閉弁時に、前記流出流体の圧力×流出孔断面積・・
・(2)式で表されるようなポートA側から作用する上
向きの流体力に対しては、図7に示す従来の構成の場合
に比べて、この下向き襞によって液溜り部の上向き受圧
面積を大幅に減少することができる。
According to the diaphragm type solenoid valve of the present invention, a downward fold is provided at a portion between the central portion and the outer peripheral edge of the diaphragm provided on the valve body so as to protrude downward in the direction of liquid pool. , Pressure of the outflow fluid × outflow hole cross-sectional area
-With respect to the upward fluid force acting from the port A side as expressed by the equation (2), the upward pressure-receiving area of the liquid pool portion due to the downward folds as compared with the conventional configuration shown in FIG. Can be greatly reduced.

【0028】図5は、図2のC−C線で示す位置を上方
から見た図であるが、この図5で示すように、従来のダ
イヤフラムでは、液溜りの上方の受圧面積が弁本体中心
の流入孔25を囲むオリフィス26の外周の幅Nをもつ
た環状部分であったのに対し、本発明の下向き襞33を
設けた場合では、液溜りの上方の受圧面積を同図の幅M
をもつた点線斜線部で示すような面積まで減少させるこ
とができる。
FIG. 5 is a view of the position shown by the line CC in FIG. 2 as viewed from above. As shown in FIG. 5, in the conventional diaphragm, the pressure receiving area above the liquid pool is increased by the valve body. In contrast to the annular portion having the width N of the outer circumference of the orifice 26 surrounding the center inflow hole 25, in the case where the downward fold 33 of the present invention is provided, the pressure receiving area above the liquid pool is set to the width shown in FIG. M
The area can be reduced to the area indicated by the shaded area with dotted lines.

【0029】そのため、ダイヤフラムの下向き襞により
ポートA側から上向きに作用する流体圧力を大幅に低減
することができ、移動コアの押し上げ現象を阻止するの
で、閉弁時における流体の逆流漏洩を確実に防止するこ
とができる。
Therefore, the fluid pressure acting upward from the port A side can be greatly reduced by the downward fold of the diaphragm, and the pushing up of the moving core is prevented, so that the backflow leakage of the fluid at the time of closing the valve is ensured. Can be prevented.

【0030】また、本発明のダイヤフラムによれば、移
動コアの押し上げ現象を阻止できるので、移動コアに付
設されるスプリングは荷重の小さなものに変更でき、コ
イルも小さくすることができる。つまり、この種の電磁
弁の小型化と省エネルギー化を達成することができる。
Further, according to the diaphragm of the present invention, since the pushing up phenomenon of the moving core can be prevented, the spring attached to the moving core can be changed to one having a small load, and the coil can be made small. That is, it is possible to achieve the miniaturization and energy saving of this type of solenoid valve.

【0031】さらに、配管路によっては、本発明のダイ
ヤフラム型電磁弁を用いることにより、ポートB側に必
要としていた逆止弁が無用となり、その分コストダウン
を期待することができる。
Further, depending on the piping, the use of the diaphragm type solenoid valve of the present invention eliminates the need for the check valve required on the port B side, so that cost reduction can be expected.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係るダイヤフラム型電磁弁の全体の構
成を示す断面図。
FIG. 1 is a sectional view showing the overall configuration of a diaphragm type solenoid valve according to the present invention.

【図2】図1の弁機構部を拡大した閉弁時の状態におけ
る断面図。
FIG. 2 is an enlarged cross-sectional view of the valve mechanism of FIG. 1 in a closed state.

【図3】同じく開弁時の状態における断面図。FIG. 3 is a cross-sectional view in a state when the valve is opened.

【図4】ダイヤフラムとその上部に設けられる突起の構
成を示す斜視図。
FIG. 4 is a perspective view showing a configuration of a diaphragm and a projection provided on the diaphragm.

【図5】図2のC−C線における断面図。FIG. 5 is a sectional view taken along line CC of FIG. 2;

【図6】ダイヤフラムの別の実施例の形状を示す斜視図FIG. 6 is a perspective view showing the shape of another embodiment of the diaphragm.

【図7】従来のダイヤフラム型電磁弁における閉弁時の
形状を示す断面図。
FIG. 7 is a sectional view showing a shape of a conventional diaphragm type solenoid valve when the valve is closed.

【図8】同じく開弁時の状態における断面図。FIG. 8 is a cross-sectional view in a state when the valve is opened.

【符号の説明】[Explanation of symbols]

21:弁本体 22:電磁ソレノイド 23a:コイル 23b:固定コア 23c:移動コア 24:スプリング 25:流入孔 26:オリフィス 27:流出孔 28:グランド 29:ダイヤフラム 29a:ダイヤフラム中央部 29b:外周縁フランジ 30:移動コア頭部 31:液溜り 32:係止溝 33,43:下向き襞 33a:開口溝 34,44:突起 21: Valve body 22: Electromagnetic solenoid 23a: Coil 23b: Fixed core 23c: Moving core 24: Spring 25: Inlet hole 26: Orifice 27: Outlet hole 28: Ground 29: Diaphragm 29a: Diaphragm center part 29b: Outer edge flange 30 : Moving core head 31: Liquid pool 32: Locking groove 33, 43: Downward fold 33 a: Opening groove 34, 44: Projection

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) F16K 31/06 305 F16K 31/06 305L (72)発明者 大岡 秀充 神奈川県川崎市麻生区五力田2−8−4 伸和コントロールズ株式会社内 Fターム(参考) 3H106 DA07 DA13 DA23 DB02 DB12 DB22 DB32 DC02 DC14 DC17 EE23 EE34 EE39 GB06 GC29 KK01 3J045 AA20 CA04 EA10 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme court ゛ (Reference) F16K 31/06 305 F16K 31/06 305L (72) Inventor Hidemitsu Ooka 2-Gosita 2- Aso-ku, Kawasaki-shi, Kanagawa Prefecture 8-4 Shinwa Controls Co., Ltd. F-term (reference) 3H106 DA07 DA13 DA23 DB02 DB12 DB22 DB32 DC02 DC14 DC17 EE23 EE34 EE39 GB06 GC29 KK01 3J045 AA20 CA04 EA10

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 弁本体内の液溜りと電磁ソレノイドとの
間に、流体の電磁ソレノイド方向への侵入を防止するた
めのダイヤフラムを配置したダイヤフラム型電磁弁にお
いて、ダイヤフラムの中央部と外周縁との間に、電磁ソ
レノイドにおける移動コアの動きに追随して液溜り内を
上下方向へ自在に移動可能な環状の下向き襞を備えてい
ることを特徴とするダイヤフラム型電磁弁。
1. A diaphragm type solenoid valve having a diaphragm disposed between a liquid reservoir in a valve body and an electromagnetic solenoid for preventing fluid from entering in the direction of the electromagnetic solenoid, wherein a diaphragm has a central portion and an outer peripheral edge. A diaphragm-type electromagnetic valve having an annular downward fold movable vertically in the liquid reservoir following the movement of the movable core in the electromagnetic solenoid.
【請求項2】 移動コアの動きに追随して液溜り内を上
下方向へ移動するダイヤフラムの下向き襞が、互いに間
隔をおいて環状に配列された複数個の部分的な下向き襞
からなっている請求項1のダイヤフラム型電磁弁。
2. A downward fold of a diaphragm which moves up and down in a liquid reservoir following movement of a movable core is composed of a plurality of partial downward folds arranged annularly at intervals from each other. The diaphragm type solenoid valve according to claim 1.
【請求項3】 弁本体内におけるダイヤフラムの上方
に、ダイヤフラムにおける下向き襞の上向き開口溝内に
挿入される突起を備えている請求項1又は2のダイヤフ
ラム型電磁弁。
3. The diaphragm-type solenoid valve according to claim 1, further comprising a projection above the diaphragm in the valve body, the protrusion being inserted into an upward opening groove of a downward fold in the diaphragm.
JP2000396991A 2000-12-27 2000-12-27 Diaphragm type solenoid valve Expired - Lifetime JP3657878B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000396991A JP3657878B2 (en) 2000-12-27 2000-12-27 Diaphragm type solenoid valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000396991A JP3657878B2 (en) 2000-12-27 2000-12-27 Diaphragm type solenoid valve

Publications (2)

Publication Number Publication Date
JP2002195428A true JP2002195428A (en) 2002-07-10
JP3657878B2 JP3657878B2 (en) 2005-06-08

Family

ID=18862187

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000396991A Expired - Lifetime JP3657878B2 (en) 2000-12-27 2000-12-27 Diaphragm type solenoid valve

Country Status (1)

Country Link
JP (1) JP3657878B2 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004183713A (en) * 2002-11-29 2004-07-02 Keihin Corp Opening and closing valve for fuel cell
JP2007016935A (en) * 2005-07-08 2007-01-25 Alps Electric Co Ltd Valve mechanism
JP2007113764A (en) * 2005-10-24 2007-05-10 Aisin Seiki Co Ltd Diaphragm type control valve
JP2009287670A (en) * 2008-05-29 2009-12-10 Nissan Motor Co Ltd Fluid control valve
JP2016008671A (en) * 2014-06-25 2016-01-18 株式会社テージーケー solenoid valve
CN108050269A (en) * 2017-12-26 2018-05-18 广州双乳胶制品有限公司 A kind of solenoid valve for water inspection machine
WO2018186393A1 (en) 2017-04-03 2018-10-11 伸和コントロールズ株式会社 Electromagnetic valve durable against oxygen, hydrogen, and water
JP2020060245A (en) * 2018-10-10 2020-04-16 株式会社鷺宮製作所 solenoid valve
KR20200091806A (en) 2017-12-05 2020-07-31 신와 콘트롤즈 가부시키가이샤 Solenoid valve
KR20210049781A (en) * 2018-08-29 2021-05-06 신와 콘트롤즈 가부시키가이샤 Diaphragm and diaphragm valves for valves
CN114829063A (en) * 2019-12-18 2022-07-29 伸和控制工业股份有限公司 Method for mounting a membrane element to a membrane hub and robot arm device for mounting a membrane element to a membrane hub

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004183713A (en) * 2002-11-29 2004-07-02 Keihin Corp Opening and closing valve for fuel cell
JP2007016935A (en) * 2005-07-08 2007-01-25 Alps Electric Co Ltd Valve mechanism
JP2007113764A (en) * 2005-10-24 2007-05-10 Aisin Seiki Co Ltd Diaphragm type control valve
JP2009287670A (en) * 2008-05-29 2009-12-10 Nissan Motor Co Ltd Fluid control valve
JP2016008671A (en) * 2014-06-25 2016-01-18 株式会社テージーケー solenoid valve
WO2018186393A1 (en) 2017-04-03 2018-10-11 伸和コントロールズ株式会社 Electromagnetic valve durable against oxygen, hydrogen, and water
KR20190132439A (en) 2017-04-03 2019-11-27 신와 콘트롤즈 가부시키가이샤 Solenoid valve with durability against oxygen, hydrogen and water
US11098816B2 (en) 2017-04-03 2021-08-24 Shinwa Controls Co., Ltd Electromagnetic valve having durability against oxygen, hydrogen and water
KR20200091806A (en) 2017-12-05 2020-07-31 신와 콘트롤즈 가부시키가이샤 Solenoid valve
CN108050269A (en) * 2017-12-26 2018-05-18 广州双乳胶制品有限公司 A kind of solenoid valve for water inspection machine
KR20210049781A (en) * 2018-08-29 2021-05-06 신와 콘트롤즈 가부시키가이샤 Diaphragm and diaphragm valves for valves
KR102531640B1 (en) 2018-08-29 2023-05-12 신와 콘트롤즈 가부시키가이샤 Diaphragms and diaphragm valves for valves
JP2020060245A (en) * 2018-10-10 2020-04-16 株式会社鷺宮製作所 solenoid valve
CN114829063A (en) * 2019-12-18 2022-07-29 伸和控制工业股份有限公司 Method for mounting a membrane element to a membrane hub and robot arm device for mounting a membrane element to a membrane hub

Also Published As

Publication number Publication date
JP3657878B2 (en) 2005-06-08

Similar Documents

Publication Publication Date Title
JP2002195428A (en) Diaphragm type solenoid valve
JP4126543B2 (en) solenoid valve
KR20100083779A (en) Back pressure receiving valve
JPS6118292Y2 (en)
JPH10288266A (en) Spring energizing check valve
JP2002276893A (en) Float valve
JP2916732B2 (en) Check valve for liquid
JPH1182885A (en) Float type drain trap
JP2699027B2 (en) Cage valve
JP2841576B2 (en) Automatic on-off valve
KR200290976Y1 (en) By-pass type solenoid valve
JP2916733B2 (en) Check valve for liquid
JP2003028330A (en) Spring-loaded disk type antifreezing valve
JP2709548B2 (en) Large capacity steam trap
JPH0438132Y2 (en)
JP2835680B2 (en) Exhaust valve
KR200368772Y1 (en) Lift check valve
JP2000179704A (en) Spring energizing disc type check valve
JP2673749B2 (en) Temperature responsive valve
JP2835683B2 (en) Exhaust valve
JPH067235Y2 (en) Check valve for water supply
JPH0638229Y2 (en) Leakless solenoid valve
JPS6218786Y2 (en)
JPH049497Y2 (en)
JPS6263276A (en) Pressure reducing valve

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20041116

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20041124

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050113

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20050215

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20050310

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 3657878

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110318

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term