JPS6352271B2 - - Google Patents
Info
- Publication number
- JPS6352271B2 JPS6352271B2 JP4268481A JP4268481A JPS6352271B2 JP S6352271 B2 JPS6352271 B2 JP S6352271B2 JP 4268481 A JP4268481 A JP 4268481A JP 4268481 A JP4268481 A JP 4268481A JP S6352271 B2 JPS6352271 B2 JP S6352271B2
- Authority
- JP
- Japan
- Prior art keywords
- thermally expandable
- expandable member
- diaphragm
- case
- heater
- 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
Links
- 239000012530 fluid Substances 0.000 claims description 14
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/025—Actuating devices; Operating means; Releasing devices electric; magnetic actuated by thermo-electric means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Temperature-Responsive Valves (AREA)
Description
【発明の詳細な説明】
本発明は、気体、液体等流体の流通量を弁の開
閉により制御する制御弁、特に弁の開閉を熱膨張
可能部材の熱膨張を利用して行うようにした制御
弁に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control valve that controls the flow rate of fluid such as gas or liquid by opening and closing the valve, and particularly a control valve that opens and closes the valve using thermal expansion of a thermally expandable member. Regarding valves.
この種制御弁として、例えば特公昭51−25931
号公報に記載されたものがある。この制御弁は、
概ね第１図Ａに示すように、弁座１に対向するニ
ードル部２を、上端が止着された長尺状の熱膨張
可能部材３の下端に連設し、前記熱膨張可能部材
３内に挿入されたヒータ４の加熱量を制御して熱
膨張可能部材３を膨張、収縮運動させることによ
り、ニードル部２を弁座１に当接、非当接させて
その間を通過する流体の流量を制御するように構
成されている。 As this kind of control valve, for example, Japanese Patent Publication No. 51-25931
There is something described in the No. This control valve is
As roughly shown in FIG. 1A, a needle portion 2 facing the valve seat 1 is connected to the lower end of a long thermally expandable member 3 whose upper end is fixed, and the needle portion 2 is connected to the lower end of the elongated thermally expandable member 3, and By controlling the heating amount of the heater 4 inserted into the valve seat 1 and causing the thermally expandable member 3 to expand and contract, the needle portion 2 is brought into contact with and not brought into contact with the valve seat 1, and the flow rate of the fluid passing therebetween is controlled. is configured to control.
しかしながら、上記制御弁においては、ニード
ル部２が熱膨張可能部材３に一体化されている関
係上、ニードル部２が膨張基点である熱膨張可能
部材３の上端から遠く離れており、第１図Ｂに示
すように、熱膨張可能部材３の僅かな曲がりで
も、ニードル部２の尖端が弁座１の座面１ａに当
たり、その結果、正確な制御が出来ない。 However, in the above-mentioned control valve, since the needle portion 2 is integrated with the thermally expandable member 3, the needle portion 2 is far away from the upper end of the thermally expandable member 3, which is the expansion reference point. As shown in B, even if the thermally expandable member 3 is slightly bent, the tip of the needle portion 2 hits the seat surface 1a of the valve seat 1, and as a result, accurate control cannot be performed.
又、比較的大流量の流体を制御する場合は、弁
口１ｂの大きさに比例してニードル部２を大きく
する必要があるが、そのような場合、ニードル部
２を支える熱膨張可能部材３もそれに応じて大き
くしなければならず、その結果、加熱に必要なヒ
ータ容量も大となるし、又、熱膨張可能部材３か
らの放熱が大きくなるため、加熱に時間がかか
り、応答速度が遅くなる。 Further, when controlling a relatively large flow rate of fluid, it is necessary to increase the size of the needle portion 2 in proportion to the size of the valve port 1b, but in such a case, the thermally expandable member 3 supporting the needle portion 2 must be increased accordingly, and as a result, the heater capacity required for heating also increases, and the heat dissipated from the thermally expandable member 3 increases, so heating takes time and the response speed decreases. Become slow.
本発明は、上述の事柄を考慮してなされたもの
で、正確且つ迅速に制御し得る制御弁を提供する
ことを目的とする。 The present invention has been made in consideration of the above-mentioned matters, and an object of the present invention is to provide a control valve that can be controlled accurately and quickly.
以下、本発明の実施例を図面を参照しながら説
明する。 Embodiments of the present invention will be described below with reference to the drawings.
第２図，第３図は本発明を所謂ノルマルオープ
ンタイプの制御弁に適用した例を示し、２１は内
部空間２９を有するケースで、上側ケース２２と
下側ケース２３とから成る。２４は両ケース２
２，２３を連結するボルトである。このケース２
１は熱膨張係数が小さく、しかも流体に対する耐
腐食性に富む材質、例えばステンレス等より成
る。 2 and 3 show an example in which the present invention is applied to a so-called normally open type control valve. Reference numeral 21 denotes a case having an internal space 29 and consisting of an upper case 22 and a lower case 23. 24 is both case 2
This is a bolt that connects 2 and 23. This case 2
1 is made of a material that has a small coefficient of thermal expansion and is highly resistant to corrosion against fluids, such as stainless steel.
前記ケース２１の内部には、該ケース２１の外
部から操作し得る微動ねじ３５によつて位置調節
される環状のガイド部材３４に保持されたダイヤ
フラム３３が張設してあり、該ダイヤフラム３３
によつて前記内部空間２９は２つの室２９ａ，２
９ｂに区画されている。 A diaphragm 33 is stretched inside the case 21 and is held by an annular guide member 34 whose position is adjusted by a fine adjustment screw 35 that can be operated from the outside of the case 21.
Accordingly, the internal space 29 has two chambers 29a, 2
It is divided into 9b.
前記ガイド部材３４は耐腐食性に富む材質、例
えばステンレス等より成り、その外径を、下側ケ
ース２３に切欠形成された環状の段部２３ａの内
径より小さくしてあり、シール部材３６を介して
段部２３ａ上に設けられている。前記ダイヤフラ
ム３３は適度な弾性を有する材質、例えばステン
レス又は燐青銅等より成り、その外周は溶接等に
よりガイド部材３４に固着してある。 The guide member 34 is made of a material with high corrosion resistance, such as stainless steel, and has an outer diameter smaller than the inner diameter of the annular step 23 a cut out in the lower case 23 . is provided on the stepped portion 23a. The diaphragm 33 is made of a material with appropriate elasticity, such as stainless steel or phosphor bronze, and its outer periphery is fixed to the guide member 34 by welding or the like.
一方の室２９ａ内には、ヒータ３１と、該ヒー
タ３１によつて加熱される有底筒状の熱膨張可能
部材２８が設けられている。該熱膨張可能部材２
８はステンレスチユーブ又は銅パイプで形成さ
れ、その下端部が前記ダイヤフラム３３の上面に
殆ど当接すべく、上側ケース２２の上板から下方
に向かつて垂設されている。３０は緩み止めのロ
ツクナツトである。尚、図示例にあつては、ヒー
タ３１は熱膨張可能部材２８の外側に設けている
が、該熱膨張可能部材２８の内側に設けても良
い。 In one chamber 29a, a heater 31 and a bottomed cylindrical thermally expandable member 28 that is heated by the heater 31 are provided. The thermally expandable member 2
Reference numeral 8 is made of a stainless steel tube or a copper pipe, and is suspended downward from the upper plate of the upper case 22 so that its lower end almost comes into contact with the upper surface of the diaphragm 33 . 30 is a lock nut to prevent loosening. In the illustrated example, the heater 31 is provided outside the thermally expandable member 28, but it may be provided inside the thermally expandable member 28.
他方の室２９ｂ内には、前記熱膨張可能部材２
８とは別体で、かつ、前記ダイヤフラム３３に固
着されこれと共に変位するニードル部３２と、流
体を通過させるための弁口２７ａを有する弁座２
７が設けられている。該ニードル部３２は耐腐食
性に富む材質、例えばステンレス等より成る。
尚、２６は流体の入口２５ａ、出口２５ｂを含む
流体流通路である。 The thermally expandable member 2 is in the other chamber 29b.
A valve seat 2 that is separate from the valve seat 8 and has a needle portion 32 that is fixed to the diaphragm 33 and is displaced together with the diaphragm 33, and a valve port 27a for allowing fluid to pass therethrough.
7 is provided. The needle portion 32 is made of a material with high corrosion resistance, such as stainless steel.
Note that 26 is a fluid flow path including a fluid inlet 25a and an outlet 25b.
上述の構成において、ヒータ３１によつて熱膨
張可能部材２８が加熱され、該熱膨張可能部材２
８が膨張する際曲がりを生じても、ニードル部３
２は熱膨張可能部材２８とは別体であり、しか
も、熱膨張可能部材２８の下方への押圧によつて
変位するダイヤフラム３３と共に変位するので、
前記曲がりによつて何ら影響されることなく、弁
座２７方向に移動して弁口２７ａの開度を適宜調
節する。従つて、熱膨張可能部材２８が曲がるよ
うな場合であつても、正確に流体を制御すること
が出来る。 In the above configuration, the thermally expandable member 28 is heated by the heater 31, and the thermally expandable member 28 is heated by the heater 31.
Even if the needle part 8 is bent when it expands, the needle part 3
2 is separate from the thermally expandable member 28, and is displaced together with the diaphragm 33, which is displaced by the downward pressure of the thermally expandable member 28.
The opening of the valve port 27a is adjusted as appropriate by moving toward the valve seat 27 without being affected by the bending. Therefore, even if the thermally expandable member 28 bends, the fluid can be accurately controlled.
又、ニードル部３２と熱膨張可能部材２８とが
別体であるから、大流量の流体を制御しようとす
る場合には、ニードル部３２のみそれに応じた大
きさのものを使用すれば良く、従つて、熱膨張可
能部材２８を大きくする必要がないので、加熱時
間を短縮することが出来、それだけ応答速度が早
くなる。 Further, since the needle portion 32 and the thermally expandable member 28 are separate bodies, when trying to control a large flow of fluid, it is sufficient to use only the needle portion 32 with a corresponding size; Therefore, since there is no need to increase the size of the thermally expandable member 28, the heating time can be shortened, and the response speed can be increased accordingly.
更に、ケース２１の外部に突設された微動ねじ
３５を操作することによつて、環状のガイド部材
３４を位置調節することが出来、従つて、該ガイ
ド部材３４に固着されたニードル部３２を、弁口
２７ａに対して簡単に位置合わせすることが出来
る。 Furthermore, by operating a fine adjustment screw 35 protruding from the outside of the case 21, the position of the annular guide member 34 can be adjusted. , can be easily aligned with the valve port 27a.
第４図は、本発明を所謂ノルマルクローズタイ
プの制御弁に適用した実施例を示すものである。 FIG. 4 shows an embodiment in which the present invention is applied to a so-called normally closed type control valve.
以上説明したように、本発明に係る制御弁は、
ケース内に、該ケースの外部から操作して位置調
節し得る環状のガイド部材にダイヤフラムを張設
し、該ダイヤフラムによつて前記ケースの内部空
間を２室に区画し、一方の室内にヒータと、該ヒ
ータによつて加熱される熱膨張可能部材とを設
け、該熱膨張可能部材の膨張によつて前記ダイヤ
フラムを押圧変位させるようにすると共に、他方
の室内に前記熱膨張可能部材とは別体で、かつ、
前記ダイヤフラムに固着されこれと共に変位する
ニードル部と、流体を通過させるための弁口を有
する弁座とを設けているので、熱膨張可能部材が
膨張時曲がりを生じても、ニードル部は熱膨張可
能部材とは別体であり、しかも、熱膨張可能部材
の下方への押圧によつて変位するダイヤフラムと
共に変位するので、前記曲がりによつて何ら影響
されることがない。従つて、熱膨張可能部材にた
とえ曲がりを生じても、流体の流量制御を正確に
行うことが出来る。 As explained above, the control valve according to the present invention is
A diaphragm is installed in the case on an annular guide member whose position can be adjusted by operating from the outside of the case, and the diaphragm divides the interior space of the case into two chambers, one of which has a heater and a , a thermally expandable member heated by the heater, the expansion of the thermally expandable member presses and displaces the diaphragm, and a space separate from the thermally expandable member is provided in the other chamber. with the body and
Since the needle part is fixed to the diaphragm and is displaced together with the diaphragm, and the valve seat has a valve port for allowing fluid to pass through, even if the thermally expandable member bends during expansion, the needle part will not expand thermally. Since it is separate from the expandable member and is displaced together with the diaphragm which is displaced by the downward pressure of the thermally expandable member, it is not affected by the bending. Therefore, even if the thermally expandable member is bent, the flow rate of the fluid can be controlled accurately.
又、ニードル部と熱膨張可能部材とが別体であ
るから、大流量の流体を制御しようとす場合に
は、ニードル部のみそれに応じた大きさのものを
使用すれば良い。従つて、熱膨張可能部材の熱容
量が小さくて済み、応答速度を早めることが出来
るし、ヒータの消費電力も少なくて済む。 Further, since the needle portion and the thermally expandable member are separate bodies, when a large flow rate of fluid is to be controlled, only the needle portion needs to be sized accordingly. Therefore, the heat capacity of the thermally expandable member is small, the response speed can be increased, and the power consumption of the heater can be reduced.
更に、ケースの外部から環状のガイド部材を位
置調節することによつて、該ガイド部材に保持さ
れたダイヤフラムに固着されたニードル部を、弁
口に対して簡単に位置合わせすることが出来、流
体の流量制御を正確に行うことが出来る。 Furthermore, by adjusting the position of the annular guide member from the outside of the case, the needle portion fixed to the diaphragm held by the guide member can be easily aligned with the valve port, and the fluid The flow rate can be controlled accurately.
第１図Ａは従来の制御弁の概略構成図、第１図
Ｂは前記制御弁の欠点を説明する図、第２図は本
発明に係る制御弁の断面図、第３図はダイヤフラ
ムの位置調節機構の一を示す平面図、第４図は本
発明の他の実施例を示す断面図である。
２１……ケース、２７……弁座、２７ａ……弁
口、２８……熱膨張可能部材、２９９……内部空
間、２９ａ，２９ｂ……室、３１……ヒータ、３
２……ニードル部、３３……ダイヤフラム、３４
……ガイド部材、３５……微動ねじ。
FIG. 1A is a schematic configuration diagram of a conventional control valve, FIG. 1B is a diagram illustrating the drawbacks of the control valve, FIG. 2 is a sectional view of the control valve according to the present invention, and FIG. 3 is a position of the diaphragm. FIG. 4 is a plan view showing one of the adjustment mechanisms, and a sectional view showing another embodiment of the present invention. 21... Case, 27... Valve seat, 27a... Valve port, 28... Thermally expandable member, 299... Internal space, 29a, 29b... Chamber, 31... Heater, 3
2...Needle part, 33...Diaphragm, 34
...Guide member, 35...Fine adjustment screw.
Claims (1)
置調節し得る環状のガイド部材にダイヤフラムを
張設し、該ダイヤフラムによつて前記ケースの内
部空間を２室に区画し、一方の室内にヒータと、
該ヒータによつて加熱される熱膨張可能部材とを
設け、該熱膨張可能部材の膨張によつて前記ダイ
ヤフラムを押圧変位させるようにすると共に、他
方の室内に前記熱膨張可能部材とは別体で、か
つ、前記ダイヤフラムに固着されこれと共に変位
するニードル部と、流体を通過させるための弁口
を有する弁座とを設けたことを特徴とする熱膨張
利用の制御弁。1 A diaphragm is installed in the case around an annular guide member whose position can be adjusted by operating from the outside of the case, and the internal space of the case is divided into two chambers by the diaphragm, and a heater is installed in one of the chambers. and,
A thermally expandable member heated by the heater is provided so that the diaphragm is pressed and displaced by the expansion of the thermally expandable member, and a separate member from the thermally expandable member is provided in the other chamber. A control valve utilizing thermal expansion, further comprising a needle portion fixed to the diaphragm and displaced together with the diaphragm, and a valve seat having a valve port for allowing fluid to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4268481A JPS57157874A (en) | 1981-03-23 | 1981-03-23 | Control valve utilizing thermal expansion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4268481A JPS57157874A (en) | 1981-03-23 | 1981-03-23 | Control valve utilizing thermal expansion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57157874A JPS57157874A (en) | 1982-09-29 |
| JPS6352271B2 true JPS6352271B2 (en) | 1988-10-18 |
Family
ID=12642853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4268481A Granted JPS57157874A (en) | 1981-03-23 | 1981-03-23 | Control valve utilizing thermal expansion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57157874A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0636382Y2 (en) * | 1987-02-10 | 1994-09-21 | 住友特殊金属株式会社 | Temperature compatible pressure control valve |
| KR100946726B1 (en) * | 2008-05-28 | 2010-03-12 | 한국기계연구원 | Low noise type electronic expansion valve with a disk bellows |
| DE102014105100B4 (en) * | 2014-04-10 | 2017-11-30 | Otto Egelhof Gmbh & Co. Kg | Valve, in particular regulating or shut-off valve, for liquid or gaseous media |
-
1981
- 1981-03-23 JP JP4268481A patent/JPS57157874A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57157874A (en) | 1982-09-29 |
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