JPS6210461Y2 - - Google Patents
Info
- Publication number
- JPS6210461Y2 JPS6210461Y2 JP1982086591U JP8659182U JPS6210461Y2 JP S6210461 Y2 JPS6210461 Y2 JP S6210461Y2 JP 1982086591 U JP1982086591 U JP 1982086591U JP 8659182 U JP8659182 U JP 8659182U JP S6210461 Y2 JPS6210461 Y2 JP S6210461Y2
- Authority
- JP
- Japan
- Prior art keywords
- canister
- inlet
- fuel
- protrusion
- evaporated fuel
- 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
- 239000000446 fuel Substances 0.000 claims description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 16
- 239000002828 fuel tank Substances 0.000 description 2
- 230000035425 carbon utilization Effects 0.000 description 1
- OKTJSMMVPCPJKN-BJUDXGSMSA-N carbon-11 Chemical class [11C] OKTJSMMVPCPJKN-BJUDXGSMSA-N 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
Landscapes
- Separation Of Gases By Adsorption (AREA)
Description
本考案は、キヤニスタにおける蒸発燃料導入口
の構成を改良したキヤニスタ構造に関するもので
ある。
The present invention relates to a canister structure in which the structure of the vaporized fuel inlet in the canister is improved.
キヤニスタでは、先行技術例である実開昭54−
182727号や、特公昭54−3221号公報に示されるて
いるように、キヤニスタ内に配設されてグリツド
に対向して開口している蒸発燃料導入口に、これ
を取囲んでキヤニスタの内部に延びる環状の突起
が設けられている。
For canisters, we use the Utility Model 1986-- which is an example of prior art.
As shown in Japanese Patent Publication No. 182727 and Japanese Patent Publication No. 54-3221, an evaporative fuel inlet installed inside the canister and opening facing the grid is surrounded by a evaporated fuel inlet opening inside the canister. An extending annular projection is provided.
ところが、蒸発燃料導入口より導入された蒸発
燃料は、導入口壁面に触れて凝縮して液化するこ
とがある。これは、キヤニスタ自体の温度が低い
場合に起るが、この液化燃料は、上記先行技術例
において蒸発燃料の気流で上記突起の裏側に迂回
したとしてもその状態でグリツド上に滴下し、活
性炭層に流れ込む。従つて、この現象は導入口に
対向する局部に集中されるので、その部分の活性
炭がほとんど機能しなくなり、活性炭利用効率が
低下するという問題がある。
However, the evaporated fuel introduced from the evaporated fuel inlet may come into contact with the wall surface of the inlet and condense and liquefy. This occurs when the temperature of the canister itself is low, but even if the liquefied fuel is diverted to the back side of the protrusion by the vaporized fuel airflow in the prior art example, it drips onto the grid in that state and forms the activated carbon layer. flows into. Therefore, since this phenomenon is concentrated in a local area facing the inlet, the activated carbon in that area almost ceases to function, resulting in a problem that the activated carbon utilization efficiency decreases.
本考案は、上記問題を解決するためにになされ
たもので、蒸発燃料導入口の構造に工夫をこら
し、蒸発燃料の流路から脱出した液化燃料が、直
接、導入口近傍からグリツドへと滴下することな
くキヤニスタ内壁を伝わり拡散してから活性炭に
流れ込むようにして局部的に浸透されるのを防止
しようするもので、キヤニスタ内のグリツドに対
向して蒸発燃料の導入口を開口したものにおい
て、上記導入口の下縁には、これを取囲みキヤニ
スタ内部に延びる環状の突起を設けると共に、そ
の外側にさらに間隔をおいて該突起を取囲む環状
の突起を少なくとも１条以上配設し、蒸発燃料が
導入口壁面に触れて凝縮生成した液化燃料を、蒸
発燃料の気流で内側の上記突起の裏側に迂回させ
ると共に、さらにその外側の突起へと順次迂回し
て伝わり拡散して滴下するように構成したもので
ある。
This invention was made to solve the above problem, and the structure of the evaporative fuel inlet is devised so that the liquefied fuel that escapes from the evaporative fuel flow path drips directly into the grid from near the inlet. This is to prevent local permeation by allowing the vaporized fuel to diffuse along the inner wall of the canister and flow into the activated carbon without being absorbed by the canister. At the lower edge of the inlet, an annular projection is provided that surrounds it and extends into the canister, and at least one annular projection that surrounds the projection is provided at a further interval on the outside of the inlet to allow evaporation. The liquefied fuel that is condensed when the fuel touches the wall of the inlet port is diverted by the airflow of the evaporated fuel to the back side of the protrusion on the inside, and then sequentially detoured and transmitted to the protrusion on the outside, where it spreads and drips. It is composed of
以下、本考案を図示の実施例にもとづいて具体
的に説明する。図において、符号１はキヤニスタ
ケースであり、上記ケース下端には、環状のボト
ムケース２が嵌着してある。このボトムケース２
に支えられるように、ボトムグリツド３が上記キ
ヤニスタケース２内に配置され、その上にはボト
ムパツド４が置かれる。上記キヤニスタケース１
は上辺部に段部２ａを具備していて、頂部２ｂに
は、パージ用導出口５、燃料タンクからの導入口
６、気化器フロート室からの導入口７を備えてお
り、上記燃料タンクからの導入口６を囲むように
して、タンクインナポツト８が垂設されている。
上記段部２ａに支えられるようにして上記キヤ
ニスタケース２内には、アツパグリツド９および
アツパパツド１０があり、上下パツド１０および
４間には活性炭１１が充填されている。
そして、本考案では、導入口６および７の下縁
には、図示のようにこれを取囲む環状突起１２お
よび１３が形成してあり、その外側にも、更に間
隔をおいて幾条かの環状の突起１４，１５が形成
れている。
このような構成では、蒸発燃料が、燃料タンク
やフロート室からもたらされて、導入口内壁面で
凝縮し、液化されても、その液滴は、蒸発燃料の
導入気流に押されて、突起１２，１３の下端か
ら、その表面を伝わつて、突起１２，１３の背裏
に迂回され、さらには突起１４，１５を伝わつ
て、更に迂回されることで、ほぼ天井部全体に拡
散されるから、その間、各突起の下端からグリツ
ド９上に滴下したとしても、それが局所的に集中
することがない。
なお、第３図に示す実施例は、別の変形例を局
部的に示した導入口断面である。ここでは突起１
２が若干、外側に傾斜しており、その外側の突起
１４は液滴下の受けの働もしている。
Hereinafter, the present invention will be explained in detail based on the illustrated embodiments. In the figure, reference numeral 1 denotes a canister case, and an annular bottom case 2 is fitted to the lower end of the case. This bottom case 2
A bottom grid 3 is disposed within the canister case 2 so as to be supported by the canister case 2, and a bottom pad 4 is placed thereon. Above canister case 1
has a stepped portion 2a on the upper side, and the top portion 2b is provided with a purge outlet 5, an inlet 6 from the fuel tank, and an inlet 7 from the carburetor float chamber. A tank inner pot 8 is vertically installed to surround the inlet 6 of the tank. Inside the canister case 2, supported by the stepped portion 2a, are a top pad 9 and a top pad 10, and activated carbon 11 is filled between the top and bottom pads 10 and 4. In the present invention, annular protrusions 12 and 13 surrounding the inlets 6 and 7 are formed on the lower edges of the inlet ports 6 and 7 as shown in the figure, and several protrusions are also provided at intervals on the outside of the protrusions 12 and 13. Annular projections 14 and 15 are formed. In such a configuration, even if the evaporated fuel is brought from the fuel tank or the float chamber and is condensed and liquefied on the inner wall surface of the inlet, the droplets are pushed by the inlet airflow of the evaporated fuel and reach the protrusion 12. , 13, along its surface, detoured to the backs of the protrusions 12, 13, further transmitted through the protrusions 14, 15, and further detoured, so that it is spread over almost the entire ceiling. During this time, even if drops are dripped onto the grid 9 from the lower ends of each protrusion, they will not be locally concentrated. The embodiment shown in FIG. 3 is a cross section of the inlet that locally shows another modification. Here, protrusion 1
2 is slightly inclined outward, and the projection 14 on the outside also serves as a receptacle for dripping liquid.
本考案は以上詳述したように、キヤニスタ内の
グリツドに対向して蒸発燃料の導入口を開口した
ものにおいて、上記導入口の下縁には、これを取
囲みキヤニスタ内部に延びる環状の突起を設ける
と共に、その外側にさらに間隔をおいて該突起を
取囲む環状の突起を少なくとも１条以上配設し、
蒸発燃料が導入口壁面に触れて凝縮生成した液化
燃料を、蒸発燃料の気流で内側の上記突起の裏側
に迂回させると共に、さらにその外側の突起へと
順次迂回して伝わり拡散して滴下するように構成
したから、蒸発燃料の導入口壁面に触れて凝縮を
生成した液化燃料は、導入口近傍から直かに活性
炭層に対し滴下せずにそのまわりの突起へと順次
拡散して滴下され、従つて、局部的に活性炭層に
浸入することなく、活性炭の利用効率が高く維持
され、これによりキヤニスタの小形化が可能であ
り、また、液滴下によるキヤニスタの急速な能力
低下も避けられる。
As described in detail above, the present invention has an evaporative fuel inlet opening facing the grid in the canister, and the lower edge of the inlet has an annular protrusion that surrounds the inlet and extends into the canister. At the same time, at least one annular protrusion surrounding the protrusion is arranged at a further interval on the outside thereof,
The liquefied fuel that is condensed when the evaporated fuel touches the wall of the inlet port is diverted by the airflow of the evaporated fuel to the back side of the protrusion on the inside, and then sequentially detoured and transmitted to the protrusion on the outside, where it spreads and drips. Because of this structure, the liquefied fuel that comes into contact with the wall surface of the evaporated fuel inlet to form condensation does not directly drip onto the activated carbon layer from the vicinity of the inlet, but instead diffuses and drips to the protrusions around it. Therefore, the utilization efficiency of the activated carbon is maintained at a high level without locally penetrating into the activated carbon layer, thereby making it possible to downsize the canister and also avoiding rapid deterioration in the performance of the canister due to dripping.
第１図は本考案の一実施例を示す断面図、第２
図は要部の拡大断面図、第３図は別の実施例の要
部の拡大断面図である。
１……キヤニスタケース、６，７……蒸発燃料
の導入口、９……グリツド、１１……活性炭、１
２，１３，１４，１５……突起。
Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is an enlarged sectional view of the main part, and FIG. 3 is an enlarged sectional view of the main part of another embodiment. 1... Canister case, 6, 7... Evaporated fuel inlet, 9... Grid, 11... Activated carbon, 1
2, 13, 14, 15...protrusions.
Claims (1)
導入口を開口したものにおいて、上記導入口の下
縁には、これを取囲みキヤニスタ内部に延びる環
状の突起を設けると共に、その外側にさらに間隔
をおいて該突起を取囲む環状の突起を少なくとも
１条以上配設し、蒸発燃料が導入口壁面に触れて
凝縮生成した液化燃料を、蒸発燃料の気流で内側
の上記突起の裏側に迂回させると共に、さらにそ
の外側の突起へと順次迂回して伝わり拡散して滴
下するように構成したことを特徴とするキヤニス
タ構造。 An inlet for vaporized fuel is opened opposite the grid in the canister, and the lower edge of the inlet is provided with an annular protrusion that surrounds it and extends inside the canister, and a further space is provided on the outside of the annular protrusion. At least one annular protrusion surrounding the protrusion is arranged, and the liquefied fuel that is condensed when the evaporated fuel touches the wall surface of the inlet port is diverted to the back side of the protrusion inside by the airflow of the evaporated fuel, Furthermore, the canister structure is characterized in that it is constructed so that the canister is sequentially detoured to the outer protrusions, spreads and drips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8659182U JPS58190428U (en) | 1982-06-10 | 1982-06-10 | canister structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8659182U JPS58190428U (en) | 1982-06-10 | 1982-06-10 | canister structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58190428U JPS58190428U (en) | 1983-12-17 |
| JPS6210461Y2 true JPS6210461Y2 (en) | 1987-03-11 |
Family
ID=30095384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8659182U Granted JPS58190428U (en) | 1982-06-10 | 1982-06-10 | canister structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58190428U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543221U (en) * | 1977-06-09 | 1979-01-10 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS599077Y2 (en) * | 1978-06-15 | 1984-03-22 | 富士重工業株式会社 | Fuel evaporative gas emission control device |
-
1982
- 1982-06-10 JP JP8659182U patent/JPS58190428U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543221U (en) * | 1977-06-09 | 1979-01-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58190428U (en) | 1983-12-17 |
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