JPH057486Y2 - - Google Patents
Info
- Publication number
- JPH057486Y2 JPH057486Y2 JP1987009876U JP987687U JPH057486Y2 JP H057486 Y2 JPH057486 Y2 JP H057486Y2 JP 1987009876 U JP1987009876 U JP 1987009876U JP 987687 U JP987687 U JP 987687U JP H057486 Y2 JPH057486 Y2 JP H057486Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- rubber sheet
- sheet member
- valve seat
- seat portion
- 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 - Lifetime
Links
Landscapes
- Lift Valve (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
【考案の詳細な説明】
〈産業上の利用分野〉
本考案は液化石油ガス用ベーパライザの弁構造
に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a valve structure for a vaporizer for liquefied petroleum gas.
〈従来の技術〉
従来の液化石油ガス（以下LPGとする）用の
ベーパーライザとしては、例えばLPGボンベか
らのLPGを一次及び二次の減圧弁により二段階
に減圧して機関の混合器に供給する内燃機関用の
ベーパーライザ等がある（実開昭56−152855号公
報参照）。<Prior art> Conventional vaporizers for liquefied petroleum gas (hereinafter referred to as LPG), for example, reduce the pressure of LPG from an LPG cylinder in two stages using primary and secondary pressure reducing valves and supply it to an engine mixer. There are vapor risers for internal combustion engines that do this (see Japanese Utility Model Application Publication No. 152855/1983).
かかるベーパーライザの弁構造を一次減圧弁を
例にとつて第２図に示し説明する。 The valve structure of such a vapor riser is shown in FIG. 2 and explained using a primary pressure reducing valve as an example.
図において、図示しないLPGボンベ側に接続
した一次弁口１の開口端に設けられる一次減圧弁
２は、その弁体３がダイアフラム４に係止した弁
レバー５に固定され、一次室６内に導入された燃
料圧力がダイアフラム４に作用して、ダイアフラ
ムスプリング７と協働し、弁レバー５をその支軸
８回りに揺動することにより、弁体３の開度を増
減制御して一次室６内の燃料圧力を所室圧力に減
圧する。９は一次室６内の燃料を二次室側へ導く
ための二次弁口を示す。 In the figure, a primary pressure reducing valve 2 is installed at the open end of a primary valve port 1 connected to an LPG cylinder (not shown), and its valve body 3 is fixed to a valve lever 5 that is engaged with a diaphragm 4. The introduced fuel pressure acts on the diaphragm 4, cooperates with the diaphragm spring 7, and swings the valve lever 5 around its support shaft 8, thereby controlling the opening degree of the valve body 3 to increase or decrease, thereby opening the primary chamber. The fuel pressure in 6 is reduced to the room pressure. Reference numeral 9 indicates a secondary valve port for guiding the fuel in the primary chamber 6 to the secondary chamber side.
〈考案が解決しようとする問題点〉
ところで、減圧弁２の弁体３には、第３図に示
すように一次弁口１開口端の弁シート部１Ａに対
面する部分にゴムシート部材１０を設けてシール
性を確保している。<Problems to be solved by the invention> By the way, as shown in FIG. 3, the valve body 3 of the pressure reducing valve 2 is provided with a rubber sheet member 10 at the portion facing the valve seat portion 1A at the opening end of the primary valve port 1. is provided to ensure sealing performance.
しかしながら、従来ではゴムシート部材１０が
平板状で、その外径を弁シート部１Ａ外径よりも
大きい形状になつているため、LPG中に含まれ
る物質（例えばエステル系化合物等）によつてゴ
ムシート部材が膨潤して柔らかくなると、第４図
のように閉弁動作時に弁シート部１Ａがゴムシー
ト部材１０にめり込み、その繰り返しによりゴム
シート部材１０に亀裂が生じる等損傷が生じり、
耐久信頼性に問題があつた。 However, conventionally, the rubber sheet member 10 is flat and its outer diameter is larger than the outer diameter of the valve seat portion 1A. When the seat member swells and becomes soft, the valve seat portion 1A sinks into the rubber sheet member 10 during the valve closing operation as shown in FIG. 4, and this repetition causes damage such as cracks to the rubber sheet member 10.
There were problems with durability and reliability.
本考案は上記の実情に鑑みてなされたもので、
ゴムシート部材が膨潤して柔らかくなつても弁シ
ート部がゴムシート部材にめり込まず、しかもシ
ール性が良好な耐久信頼性の高いベーパーライザ
の弁構造を提供することを目的とする。 This idea was made in view of the above circumstances.
To provide a valve structure for a vapor riser having high durability and reliability, in which a valve seat part does not sink into a rubber sheet member even when the rubber sheet member swells and becomes soft, and has good sealing performance.
〈問題点を解決するための手段〉
このため本考案は、液化石油ガス用ベーパライ
ザにおいて、減圧弁の弁体側に弁シート部と対面
して設けるゴムシート部材のシート面を、弁シー
ト部側に凸の球面形状に形成すると共に、ゴムシ
ート部材と弁シート部との当接面の接線方向が弁
口中心軸に向けて弁シート部側に傾斜する構成と
し、かつ前記ゴムシート部材の外径を弁シート部
外径より小さく形成するよう構成した。<Means for Solving the Problems> For this reason, the present invention, in a vaporizer for liquefied petroleum gas, is such that the seat surface of a rubber sheet member provided facing the valve seat portion on the valve body side of the pressure reducing valve is placed on the valve seat side. The rubber sheet member is formed into a convex spherical shape, and the tangential direction of the contact surface between the rubber sheet member and the valve seat portion is inclined toward the valve seat portion side toward the central axis of the valve port, and the outer diameter of the rubber sheet member is The outer diameter of the valve seat is smaller than the outer diameter of the valve seat.
〈作用〉
上記の構成によれば、ゴムシート部材が膨潤し
ても弁シート部がめり込まず、外側からゴムシー
ト部材を押しつけるようになるので、ゴムシート
部材を損傷させず、しかも十分な接触面を確保で
き、従つて耐久信頼性が向上すると共に膨潤時に
シール性が損なわれることがない。<Function> According to the above configuration, even if the rubber sheet member swells, the valve seat part does not sink in and presses the rubber sheet member from the outside, so that the rubber sheet member is not damaged and sufficient contact is maintained. The surface can be secured, therefore, durability and reliability are improved, and sealing performance is not impaired when swelling occurs.
〈実施例〉
以下、本考案の一実施例を第１図に基づいて説
明する。尚、弁の作動機構に関しては第２図に示
す従来のものと同様であるので、本実施例では従
来と異なる減圧弁の要部だけを示して説明する。<Example> Hereinafter, an example of the present invention will be described based on FIG. 1. The operating mechanism of the valve is the same as that of the conventional one shown in FIG. 2, so in this embodiment, only the main parts of the pressure reducing valve that are different from the conventional one will be shown and explained.
図において、本実施例の減圧弁２１における弁
体２２の弁シート部２３に対面する部分に設ける
ゴムシート部材２４は、そのシート面２４ａが弁
シート部２３側に凸の球面形状に形成してある。
また、弁シート部２３のシート面２３ａは外側か
ら内側に向けて弁口２５内に向くように傾斜さ
せ、かつ湾曲形成してある。そして、ゴムシート
部材２４と弁シート部２３の各シート面２４ａ，
２３ａの当接面の接線Ａの方向が弁口２５中心軸
に向けて弁シート部２３側に傾斜するように形成
してある。更に、ゴムシート部材２４の外径d1を
弁シート部２３の外径d2よりも小さく形成してあ
る。 In the figure, the rubber sheet member 24 provided on the portion of the valve body 22 facing the valve seat portion 23 in the pressure reducing valve 21 of the present embodiment has a seat surface 24a formed in a spherical shape convex toward the valve seat portion 23 side. be.
Further, the seat surface 23a of the valve seat portion 23 is inclined and curved so as to face inside the valve port 25 from the outside to the inside. Then, each seat surface 24a of the rubber sheet member 24 and the valve seat portion 23,
The direction of the tangent A of the contact surface of 23a is inclined toward the valve seat portion 23 toward the central axis of the valve port 25. Further, the outer diameter d 1 of the rubber sheet member 24 is smaller than the outer diameter d 2 of the valve seat portion 23 .
かかる構成によれば、ゴムシート部材２４が膨
潤しても、弁シート部２３がゴムシート部材２４
にめり込まず、ゴムシート部材２４の損傷を防止
できる。また、この場合、膨潤以前と同じように
ゴムシート部材２４は外側から弁シート部２３に
よつて押し付けられ図中点線で示すように弁口２
５内側に逃げるようになり、ゴムシート部材２４
と弁シート部２３の互いのシート面２４ａ，２３
ａの当り面を充分確保できシール性が損なわれる
ことがない。しかも、ゴムシート部材２４のシー
ト面２４ａを球面形状にしたことによつて、ゴム
シート部材２４の膨潤量が変化してもゴムシート
部材２４と弁シート部２３の互いの接触面積が極
端に変化することがない。更には、従来と同じゴ
ム材で十分耐久信頼性が向上でき、高価なゴム材
を使用する必要がないので、コストの面でも有利
である。 According to this configuration, even if the rubber sheet member 24 swells, the valve seat portion 23 will not swell to the rubber sheet member 24.
The rubber sheet member 24 can be prevented from being damaged. In addition, in this case, the rubber sheet member 24 is pressed from the outside by the valve seat portion 23 as before swelling, and the valve opening 24 is pressed from the outside as shown by the dotted line in the figure.
5 The rubber sheet member 24 will now escape inward.
and the mutual seat surfaces 24a, 23 of the valve seat portion 23.
A sufficient contact surface can be secured and the sealing performance will not be impaired. Furthermore, by making the seat surface 24a of the rubber sheet member 24 into a spherical shape, even if the amount of swelling of the rubber sheet member 24 changes, the mutual contact area between the rubber sheet member 24 and the valve seat portion 23 changes drastically. There's nothing to do. Furthermore, durability and reliability can be sufficiently improved using the same rubber material as in the past, and there is no need to use expensive rubber material, which is advantageous in terms of cost.
尚、従来では、ゴムシート部材２４と弁シート
部との極端な面接触を避けるために、弁シート部
側のシート面を曲面形状にしていたが、本考案で
はゴムシート部材のシート面が球面形状になつて
いるので、本実施例のような必ずしもシート面を
曲面にする必要はなく、平面状の傾斜面にしても
よく、弁シート部の加工が容易に出来る。 In the past, the seat surface on the valve seat side was made into a curved shape in order to avoid extreme surface contact between the rubber sheet member 24 and the valve seat part, but in the present invention, the seat surface of the rubber sheet member is made into a spherical shape. Because of the shape, the seat surface does not necessarily have to be a curved surface as in this embodiment, but may be a flat inclined surface, making it easy to process the valve seat portion.
〈考案の効果〉
以上述べたように本考案によれば、ゴムシート
部材が膨潤状態であつても、弁シート部がゴムシ
ート部材にめり込むことがなくゴムシート部材の
損傷を防止できる。また、ゴムシート部材の膨潤
量が変化しても互いのシート面の接触面積が極端
に変化せず、しかも常に充分な当り面を確保でき
るので、シール性が損なわれることがない。従つ
て、減圧弁の耐久信頼性を大巾に向上できる。<Effects of the Invention> As described above, according to the present invention, even if the rubber sheet member is in a swollen state, the valve seat portion does not sink into the rubber sheet member, thereby preventing damage to the rubber sheet member. Further, even if the swelling amount of the rubber sheet members changes, the contact area of the sheet surfaces does not change drastically, and since a sufficient contact surface can always be ensured, the sealing performance is not impaired. Therefore, the durability and reliability of the pressure reducing valve can be greatly improved.
第１図は本考案の一実施例の要部断面図、第２
図は従来のベーパーライザの弁構造を示す断面
図、第３図は同上従来例の弁要部の断面図、第４
図は同上従来例のゴムシート部材膨潤時の閉弁状
態を示す断面図である。
２１……減圧弁、２２……弁体、２３……弁シ
ート部、２３ａ……シート面、２４……ゴムシー
ト部材、２４ａ……シート面、２５……弁口、Ａ
……接線。
Figure 1 is a sectional view of the main parts of an embodiment of the present invention, Figure 2
The figure is a sectional view showing the valve structure of a conventional vapor riser, FIG. 3 is a sectional view of the main part of the valve of the conventional example, and
The figure is a sectional view showing the valve closed state when the rubber sheet member swells in the conventional example. 21...Pressure reducing valve, 22...Valve body, 23...Valve seat portion, 23a...Seat surface, 24...Rubber sheet member, 24a...Seat surface, 25...Valve port, A
...Tangential line.
Claims (1)
を有し、該室の圧力が所定圧力より減圧したとき
に減圧弁が開弁する構成の液化石油ガス用ベーパ
ライザにおいて、前記減圧弁の弁体側に弁シート
部と対面して設けるゴムシート部材のシート面
を、弁シート部側に凸の球面形状に形成すると共
に、ゴムシート部材と弁シート部との当接面の接
線方向が弁口中心軸に向けて弁シート部側に傾斜
する構成とし、かつ前記ゴムシート部材の外径を
弁シート部外径より小さく形成することを特徴と
する液化石油ガス用ベーパライザの弁構造。 In a vaporizer for liquefied petroleum gas having a chamber into which liquefied petroleum gas is introduced under reduced pressure through a pressure reducing valve, and the pressure reducing valve opens when the pressure in the chamber is reduced from a predetermined pressure, the valve body side of the pressure reducing valve is provided. The seat surface of the rubber sheet member provided facing the valve seat portion is formed into a spherical shape that is convex toward the valve seat portion side, and the tangential direction of the contact surface between the rubber sheet member and the valve seat portion is at the center of the valve opening. 1. A valve structure for a vaporizer for liquefied petroleum gas, wherein the valve structure is inclined toward the valve seat toward the axis, and the outer diameter of the rubber sheet member is smaller than the outer diameter of the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987009876U JPH057486Y2 (en) | 1987-01-28 | 1987-01-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987009876U JPH057486Y2 (en) | 1987-01-28 | 1987-01-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63119860U JPS63119860U (en) | 1988-08-03 |
| JPH057486Y2 true JPH057486Y2 (en) | 1993-02-25 |
Family
ID=30795605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987009876U Expired - Lifetime JPH057486Y2 (en) | 1987-01-28 | 1987-01-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH057486Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5811988B2 (en) * | 1979-09-07 | 1983-03-05 | 雪印乳業株式会社 | White sauce base in powder form |
-
1987
- 1987-01-28 JP JP1987009876U patent/JPH057486Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63119860U (en) | 1988-08-03 |
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