JPS5856404Y2 - nozzle - Google Patents
nozzleInfo
- Publication number
- JPS5856404Y2 JPS5856404Y2 JP1977090202U JP9020277U JPS5856404Y2 JP S5856404 Y2 JPS5856404 Y2 JP S5856404Y2 JP 1977090202 U JP1977090202 U JP 1977090202U JP 9020277 U JP9020277 U JP 9020277U JP S5856404 Y2 JPS5856404 Y2 JP S5856404Y2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- pressure
- hole
- flapper
- gap
- 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
Landscapes
- Servomotors (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Description
【考案の詳細な説明】
本考案は、ノズル・フラッパ機構等に好適なノズルに関
するものである。[Detailed Description of the Invention] The present invention relates to a nozzle suitable for a nozzle flapper mechanism, etc.
変位を空気圧に変換する要素として、ノズル・フラッパ
機構が用いられている。A nozzle flapper mechanism is used as an element that converts displacement into air pressure.
これは、ノズルとフラッパとを対向配置して、フラッパ
の微小変位を入力としてノズルの背圧変化を出力として
取り出すものであって、空気式計器等に広く使用されて
いる。This is a device in which a nozzle and a flapper are disposed opposite each other, and a minute displacement of the flapper is input, and a change in back pressure of the nozzle is output as an output, and is widely used in pneumatic instruments and the like.
しかし、一般に、従来のこの種のノズル・フラッパ機構
は非直線誤差が大きく、それを改善するために、たとえ
ばノズルとアスピレータとを組み合わせることが行なわ
れている。However, conventional nozzle/flapper mechanisms of this type generally have a large non-linearity error, and in order to improve this, for example, a nozzle and an aspirator are combined.
したがって、直線性の優れたノズル・フラッパ機構を実
現するためには、部品点数が多くなって構成も複雑とな
り、高価になるという欠点があった。Therefore, in order to realize a nozzle flapper mechanism with excellent linearity, the number of parts increases, the structure becomes complicated, and the cost becomes high.
本考案は、このような点に着目したものであり、その目
的は、比較的簡単な構成で特性の優れたノズルを提供す
ることにある。The present invention focuses on these points, and its purpose is to provide a nozzle with a relatively simple configuration and excellent characteristics.
このような目的を達成する本考案は、検出対象と対向す
る同一面に開口するように空気供給孔と圧力取出孔が形
成され、空気供給孔から供給空気圧を加えて検出対象と
対向する開口面近傍の圧力を取り出すことを特徴とする
。The present invention achieves this purpose by forming an air supply hole and a pressure extraction hole so as to open on the same surface facing the detection target, and applying supply air pressure from the air supply hole to the opening surface facing the detection target. It is characterized by extracting nearby pressure.
以下、図面を用いて詳細に説明する。Hereinafter, a detailed explanation will be given using the drawings.
第１図は本考案の一実施例を示す構成説明図であって、
１０は本考案に係るノズル、２０は検出対像となるフラ
ッパであり、ノズル・フラッパ機構の一例を示している
。FIG. 1 is a configuration explanatory diagram showing one embodiment of the present invention,
10 is a nozzle according to the present invention, 20 is a flapper serving as a detection object, and shows an example of a nozzle/flapper mechanism.
ノズル１０には、同一面に開口するようにして、空気供
給孔１１の吹出孔１２および圧力取出孔１３が形成され
ている。The nozzle 10 has an air supply hole 11, a blowout hole 12, and a pressure takeoff hole 13 formed in the same plane.
なお、本実施例では、このノズル１０の吹出孔１２およ
び圧力取出孔１３の開口を含む面は、端面に対して深さ
δだけ切除されているが、これは必要に応じて所定の深
さに切除されるものであって、δ＝Ｏの場合もある。In this embodiment, the surface of the nozzle 10 including the openings of the blow-off hole 12 and the pressure take-off hole 13 is cut by a depth δ with respect to the end surface, but this may be cut to a predetermined depth as necessary. In some cases, δ=O.
フラッパ２０は、ノズル１０の吹出孔１２および圧力取
出孔１３の開口に対向するように配置されている。The flapper 20 is arranged to face the openings of the blowout hole 12 and the pressure extraction hole 13 of the nozzle 10 .
このような構成の動作について説明する。The operation of such a configuration will be explained.
空気供給孔１１に導入された供給空気圧Ａ／Ｓは、フラ
ッパ２０に向けて吹き出され、吹出孔１２の開口面とフ
ラッパ２０との間隙Ｘを通って大気に流出する。The supply air pressure A/S introduced into the air supply hole 11 is blown out toward the flapper 20 and flows out into the atmosphere through the gap X between the opening surface of the blowout hole 12 and the flapper 20.
ここで°、間隙Ｘが小さい場合、間隙Ｘは空気流に対す
る抵抗となり、吹出孔１２の開口面および圧力取出孔１
３の開口面近傍には大気圧以上の静圧（背圧） Ｐｎが
生じる。Here, if the gap X is small, the gap X becomes a resistance to the air flow, and the opening surface of the blowout hole
Static pressure (back pressure) Pn greater than atmospheric pressure is generated near the opening surface of No. 3.
そして、間隙Ｘ′が次第に大きくなると、空気供給孔１
１および吹出孔１２によって絞られた流れは開口面がら
流出すると同時に急激に膨張するので開口面近傍におけ
る圧力Ｐｎは大気圧以下に下がり、さらに間隙Ｘが大き
くなると圧力Ｐｎは大気圧となる。Then, as the gap X' gradually increases, the air supply hole 1
1 and the blow-off hole 12 rapidly expand as soon as they flow out of the opening surface, the pressure Pn in the vicinity of the opening surface drops to below atmospheric pressure, and as the gap X further increases, the pressure Pn becomes atmospheric pressure.
この開口面近傍の圧力Ｐｎは圧力取出孔１３を介して外
部に取り出される。The pressure Pn near this opening surface is taken out to the outside through the pressure takeout hole 13.
第２図は第１図における間隙Ｘと背圧Ｐｎの関係の一例
を示す特性図であって、圧力取出孔１３の他端にゲージ
を接続して測定したものである。FIG. 2 is a characteristic diagram showing an example of the relationship between the gap X and the back pressure Pn in FIG. 1, and is measured by connecting a gauge to the other end of the pressure extraction hole 13.
第２図において、縦軸には背圧Ｐｎをとり、横軸には間
隙Ｘをとっている。In FIG. 2, the vertical axis represents the back pressure Pn, and the horizontal axis represents the gap X.
なお、Ｐｏは大気圧を表わす。第２図から明らかなよう
に、本考案に係るノズル１０とフラッパ２０との間隙Ｘ
を大きくするにしたがって背圧Ｐｎは低下し、大気圧Ｐ
Ｏよりも小さくなって負圧となる。Note that Po represents atmospheric pressure. As is clear from FIG. 2, the gap X between the nozzle 10 and the flapper 20 according to the present invention
As the back pressure Pn increases, the back pressure Pn decreases, and the atmospheric pressure P
It becomes smaller than O and becomes a negative pressure.
これから明らかなように、本考案に係るノズル１０を用
いてノズル・フラッパ機構を構成することにより、従来
のノズル・フラッパ機構の特性に比べて背圧Ｐｎが間隙
Ｘの変位に対応して変化する直線部分が増大し、アスピ
レータを付加したのと同様な効果が得られる。As is clear from this, by configuring the nozzle flapper mechanism using the nozzle 10 according to the present invention, the back pressure Pn changes in response to the displacement of the gap X, compared to the characteristics of the conventional nozzle flapper mechanism. The straight line portion increases and the same effect as adding an aspirator can be obtained.
このような効果は、本考案に係るノズル１０が高感度特
性を有していることにより得られるものである。Such effects are obtained because the nozzle 10 according to the present invention has high sensitivity characteristics.
なお、第２図において背圧Ｐｎが間隙Ｘの変位に対応し
て変化する直線部分の勾配、すなわち感度は、開口面の
切除深さδを小さくすることに大きくすることができ、
δ＝Ｏの時に最高感度となる。In addition, in FIG. 2, the slope of the straight line portion where the back pressure Pn changes in response to the displacement of the gap X, that is, the sensitivity, can be increased by decreasing the ablation depth δ of the opening surface.
The highest sensitivity is achieved when δ=O.
また、このようなノズル・フラッパ機構において、フラ
ッパ２０に対するノズル１０の作用力に着目すると、ノ
ズル１０の吹出力と開口面周辺における吸引力とが相殺
されてノズル１０の吹出力が減少し、高感度のノズル・
フラッパ機構が実現できる。In addition, in such a nozzle flapper mechanism, if we focus on the acting force of the nozzle 10 on the flapper 20, the blowing force of the nozzle 10 and the suction force around the opening surface cancel each other out, and the blowing force of the nozzle 10 decreases. Sensitivity nozzle
A flapper mechanism can be realized.
なお、本実施例では、フラッパを検出対象としたノズル
・フラッパ機構について説明したが、位置検出用のセン
サとして用いることもできる。In this embodiment, a nozzle/flapper mechanism using a flapper as a detection target has been described, but it can also be used as a sensor for position detection.
以上説明したように、本考案によれば、比較的簡単な構
成で特性の優れたノズルが実現でき、その実用的効果は
大きい。As explained above, according to the present invention, a nozzle with excellent characteristics can be realized with a relatively simple configuration, and its practical effects are significant.
第１図は本考案に基づくノズルを用いたノズル・フラッ
パ機構の一例を示す構成説明図、第２図は第１図の機構
の特性の一例を示す特性図である。
１０・・・ノズル、１１・・・空気供給孔、１２・・・
吹出孔、１３・・・圧力取出孔、２０・・・フラッパ。FIG. 1 is a configuration explanatory diagram showing an example of a nozzle flapper mechanism using a nozzle based on the present invention, and FIG. 2 is a characteristic diagram showing an example of the characteristics of the mechanism shown in FIG. 10... Nozzle, 11... Air supply hole, 12...
Blowout hole, 13...pressure outlet hole, 20...flapper.
Claims (1)
と圧力取出孔が形成され、空気供給孔から供給空気圧を
加えて検出対象に向けて吹き出させ、圧力取出孔から検
出対象と対向する開口面近傍の圧力を取り出すことを特
徴とするノズル。An air supply hole and a pressure extraction hole are formed to open on the same surface facing the detection target, and supply air pressure is applied from the air supply hole and blown out toward the detection target, and the pressure extraction hole opens the opening facing the detection target. A nozzle that extracts pressure near a surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977090202U JPS5856404Y2 (en) | 1977-07-06 | 1977-07-06 | nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977090202U JPS5856404Y2 (en) | 1977-07-06 | 1977-07-06 | nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5416993U JPS5416993U (en) | 1979-02-03 |
| JPS5856404Y2 true JPS5856404Y2 (en) | 1983-12-26 |
Family
ID=29018316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977090202U Expired JPS5856404Y2 (en) | 1977-07-06 | 1977-07-06 | nozzle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5856404Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56126635A (en) * | 1980-03-07 | 1981-10-03 | Fuji Heavy Ind Ltd | Automatic speed governor for idling |
| JPS5818035U (en) * | 1981-07-29 | 1983-02-03 | 本田技研工業株式会社 | Throttle valve stopper device |
-
1977
- 1977-07-06 JP JP1977090202U patent/JPS5856404Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5416993U (en) | 1979-02-03 |
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