JPH0621530Y2 - Air cleaner intake duct - Google Patents
Air cleaner intake ductInfo
- Publication number
- JPH0621530Y2 JPH0621530Y2 JP1988084243U JP8424388U JPH0621530Y2 JP H0621530 Y2 JPH0621530 Y2 JP H0621530Y2 JP 1988084243 U JP1988084243 U JP 1988084243U JP 8424388 U JP8424388 U JP 8424388U JP H0621530 Y2 JPH0621530 Y2 JP H0621530Y2
- Authority
- JP
- Japan
- Prior art keywords
- duct
- intake
- air
- intake duct
- air cleaner
- 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
- 238000005452 bending Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 238000000926 separation method Methods 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Separating Particles In Gases By Inertia (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案はエアクリーナの吸気ダクトに関し、特にその水
分離構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an intake duct of an air cleaner, and more particularly to a water separation structure thereof.
［従来の技術］ エアクリーナに至る吸気ダクトには吸気に混入して水分
が侵入することがあり、かかる水分がエアクリーナに至
ると錆びの発生やエアフィルタの性能劣化を生じる。[Prior Art] Moisture may enter the intake duct leading to the air cleaner and intrude into the intake duct, and when such moisture reaches the air cleaner, rust occurs and the performance of the air filter deteriorates.
そこで従来は、吸気と共に侵入した水分を分離排出する
ために、吸気ダクトの一部に大径のチャンバを設け、こ
こで吸気流速を低下せしめることにより吸気中の水分を
落下分離せしめる構造が広く一般的に採用されている。Therefore, in the past, in order to separate and discharge the water that has entered with the intake air, a large-diameter chamber is provided in a part of the intake duct, and the intake flow velocity is reduced here to drop and separate the water in the intake air. Has been adopted as
［考案が解決しようとする課題］ しかしながら、上記従来の構造では、スペースの限られ
た車両内で比較的大形の上記チャンバを設置するのに苦
慮しており、その改善が望まれていた。[Problems to be Solved by the Invention] However, in the above-described conventional structure, it is difficult to install the relatively large-sized chamber in a vehicle having a limited space, and improvement thereof has been desired.
本考案はかかる要請に鑑みてなされたもので、大形の水
分離チャンバを設けることなく、効果的な水分離をなす
ことが可能なエアクリーナの吸気ダクトを提供すること
を目的とする。The present invention has been made in view of the above demands, and an object of the present invention is to provide an air cleaner intake duct capable of effective water separation without providing a large-sized water separation chamber.
［課題を解決するための手段］ 本考案の構成を第１図で説明すると、エアクリーナ３に
至る吸気ダクト１は途中で下方へ屈曲せしめて垂直ダク
ト１１としてあり、該垂直ダクト１１には下端に排水口
１１ａを設けて、ダスト内負圧の作用で閉鎖する弁体２
で上記排水口１１ａを閉鎖してある。上記垂直ダクト１
１の中間位置からは下流側吸気ダクト１２が分岐してあ
り、分岐部に近い下流側吸気ダクト１２のダクト壁には
複数の空気導入用小孔１４が設けてある。[Means for Solving the Problems] The structure of the present invention will be described with reference to FIG. A valve body 2 which is provided with a drainage port 11a and is closed by the action of negative pressure in the dust
The drainage port 11a is closed. Above vertical duct 1
The downstream side intake duct 12 is branched from the intermediate position of 1, and a plurality of small holes 14 for air introduction are provided in the duct wall of the downstream side intake duct 12 near the branch part.
［作用］ 上記構造の吸気ダクトにおいて、エアクリーナを経てエ
ンジンに吸入される吸気の一部は空気導入用小孔より供
給される。したがって、垂直ダクト内を流通する吸気量
は上記小孔より給気される分、少なくなり、吸気流速が
低下する。しかして、流速が低下した垂直ダクト内の吸
気より水分が分離して落下し、垂直ダクト下端に溜る。[Operation] In the intake duct having the above structure, a part of the intake air taken into the engine through the air cleaner is supplied from the air introduction small hole. Therefore, the amount of intake air flowing through the vertical duct is reduced by the amount of air supplied from the small holes, and the intake flow velocity is reduced. Then, moisture separates from the intake air in the vertical duct where the flow velocity is reduced and falls, and collects at the lower end of the vertical duct.
上記垂直ダクト下端に設けた排水口は、垂直ダクト内の
吸気流通が弁の吸引力と水頭圧（水の重さ）の関係によ
り、吸引力の強い場合は負圧を受けて上記弁体５によっ
て閉じられ、エンジン停止時および水頭圧が弁の吸引力
に勝さる時は上記負圧が解消され弁体５が開放作動して
排水がなされる。The drain port provided at the lower end of the vertical duct receives a negative pressure when the suction flow is strong due to the relationship between the suction force of the valve and the water head pressure (weight of water) in the intake duct in the vertical duct. When the engine is stopped and the water head pressure exceeds the suction force of the valve, the negative pressure is released and the valve element 5 is opened to drain water.
このようにして、大径の水分離チャンバを設けることな
く、小スペースで吸気中の水分離をなす。In this way, water is separated during intake air in a small space without providing a large-diameter water separation chamber.
［実施例］ 第１図において、エアクリーナ３に至る吸気ダクト１
は、上流側ダクト１３の終端が下方へ屈曲して垂直ダク
ト１１となっており、該垂直ダクト１１の中間位置から
水平に分岐せしめた下流側ダクト１２を上記エアクリー
ナ３に接続してある。[Embodiment] In FIG. 1, an intake duct 1 leading to an air cleaner 3 is shown.
Has a vertical duct 11 in which an end of an upstream duct 13 is bent downward, and a downstream duct 12 horizontally branched from an intermediate position of the vertical duct 11 is connected to the air cleaner 3.
上記垂直ダクト１１の下端は排水口１１ａとなってお
り、該排水口１１ａにはこれを開閉する弁体２が設けて
ある。この弁体２はその薄肉の弁部２１が垂直ダクト１
１内の負圧の作用を受けて閉鎖するものである。The lower end of the vertical duct 11 is a drainage port 11a, and the drainage port 11a is provided with a valve body 2 for opening and closing the drainage port 11a. In this valve body 2, the thin valve portion 21 has a vertical duct 1
It is closed by the action of the negative pressure in 1.
上記下流側ダクト１２には、その上流端たる分岐部に近
いダクト壁に複数の小孔１４が設けてある。これら小孔
１４は例えば５mmφ程度のものであり、空気のみを効果
的に導入し、吸気騒音を外部へ放散することはない。The downstream duct 12 is provided with a plurality of small holes 14 in the duct wall near the branch portion which is the upstream end thereof. These small holes 14 are, for example, about 5 mmφ and effectively introduce only air and do not diffuse intake noise to the outside.
上記構造の吸気ダクト１において、吸気は図中矢印の如
く上流側ダクト１３より垂直ダクト１１に至り、途中で
ほぼ直角に変流して下流側ダクト１２に流入する。この
下流側ダクト１２へは空気導入用の上記小孔１４からも
吸気が流入し、これらを合わせた吸気がエアクリーナ３
に供給される。In the intake duct 1 having the above-described structure, the intake air reaches the vertical duct 11 from the upstream duct 13 as shown by the arrow in the drawing, changes its flow at a substantially right angle in the middle, and flows into the downstream duct 12. Intake air also flows into the downstream duct 12 through the small holes 14 for introducing air, and the combined intake air is the air cleaner 3
Is supplied to.
これを第２図で説明する。エンジンの必要吸気量をＱ１
とすると、その内Ｑ３が空気導入用小孔１４から供給さ
れ、上流側ダクト１３より垂直ダクト１１に流入する吸
気量Ｑ２はＱ２＝Ｑ１−Ｑ３である。ダクト内の流速ｖ
は、ダクトの断面積をＡ、流量をＱとしてＶ＝Q/Aで表
されるから、垂直ダクト１１内の吸気流速は、上記小孔
１４より吸気の一部が供給されることにより低下し、こ
の流速の低下した吸気より水分Ｌ（第１図）が効果的に
分離落下せしめられる。水分分離後の吸気は水平に変流
するから、上記分離された水分が再び吸気に混入するこ
とはない。This will be described with reference to FIG. The required intake amount of the engine is Q1
Then, Q3 of that is supplied from the small hole 14 for air introduction, and the intake air amount Q2 flowing into the vertical duct 11 from the upstream duct 13 is Q2 = Q1-Q3. Velocity v in the duct
Is represented by V = Q / A, where A is the cross-sectional area of the duct and Q is the flow rate. Therefore, the intake flow velocity in the vertical duct 11 decreases due to the supply of part of the intake air from the small holes 14. The water content L (Fig. 1) is effectively separated and dropped from the intake air whose flow velocity has decreased. Since the intake air after the water separation changes in a horizontal direction, the separated water is not mixed into the intake air again.
分離された水分は垂直ダクト１１の下端部に凝集する。
垂直ダクト１１内の吸気流通負圧が上記凝集された水の
水頭圧より勝さる場合は弁部２の弁部２１は排水口１ａ
を閉じており、凝集した水はここで貯留される。The separated water is condensed on the lower end of the vertical duct 11.
When the negative pressure of the intake air flow in the vertical duct 11 exceeds the head pressure of the condensed water, the valve portion 21 of the valve portion 2 has the drain port 1a.
Is closed and the condensed water is stored here.
水頭圧が弁の吸引力に勝さる時およびエンジン停止時に
は上記負圧は解消し、上記弁部２１が開いて排水がなさ
れる。When the water head pressure exceeds the suction force of the valve and when the engine is stopped, the negative pressure is released, the valve portion 21 is opened, and drainage is performed.
［考案の効果］ 以上の如く、本考案の吸気ダクトは、垂直ダクトの中間
部より下流側ダクトを分岐するとともに、該下流側ダク
トの分岐部に近いダクト壁に必要吸気の一部を導入する
小孔を設ける構成として、上記垂直ダクト内の吸気流通
を低減せしめ、もって水分の分離落下を促進するもの
で、大形の水分離チャンバを設置することなく、小スペ
ースで吸気中の水分を排除することができるものであ
る。[Advantages of the Invention] As described above, the intake duct of the present invention branches the downstream duct from the middle portion of the vertical duct and introduces a part of the required intake air into the duct wall near the branch of the downstream duct. As a structure with small holes, it reduces the intake air flow in the vertical duct and promotes the separation and drop of water, and eliminates the water in intake air in a small space without installing a large water separation chamber. Is what you can do.
第１図は本考案の一実施例を示す吸気ダクトの全体断面
図、第２図はその作動原理を示す要部斜視図である。 １…吸気ダクト １１…垂直ダクト １１ａ…排水口 １２…下流側ダクト １３…上流側ダクト １４…空気導入用小孔 ２…弁体 ３…エアクリーナ Ｌ…水分FIG. 1 is an overall cross-sectional view of an intake duct showing an embodiment of the present invention, and FIG. 2 is a perspective view of essential parts showing its operating principle. 1 ... Intake duct 11 ... Vertical duct 11a ... Drainage port 12 ... Downstream duct 13 ... Upstream duct 14 ... Air introduction small hole 2 ... Valve body 3 ... Air cleaner L ... Moisture
───────────────────────────────────────────────────── フロントページの続き (72)考案者 北村 彰 愛知県刈谷市一里山町金山100番地 トヨ タ車体株式会社内 (56)参考文献 特開 昭56−65610（ＪＰ，Ａ) 特開 昭57−156013（ＪＰ，Ａ) 実開 昭60−149418（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Akira Kitamura 100 Kanayama, Ichiriyama-cho, Kariya city, Aichi Toyota Shatai Co., Ltd. (56) References JP-A-56-65610 (JP, A) JP-A-57 -156013 (JP, A) Actually developed 60-149418 (JP, U)
Claims (1)
方へ屈曲せしめて垂直ダクトとなし、該垂直ダクトには
下端に排水口を設けて、ダクト内負圧の作用で閉鎖する
弁体で上記排水口を閉鎖するようになし、上記垂直ダク
トの中間位置より下流側吸気ダクトを分岐して、分岐部
に近い下流側吸気ダクトのダクト壁に複数の空気導入用
小孔を設けたことを特徴とするエアクリーナの吸気ダク
ト。1. A drainage port is provided at a lower end of a vertical duct by bending an intake duct leading to an air cleaner downward on the way to form a vertical duct. The mouth is closed, the downstream side intake duct is branched from the intermediate position of the vertical duct, and a plurality of air introduction small holes are provided in the duct wall of the downstream side intake duct near the branch portion. Air cleaner intake duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988084243U JPH0621530Y2 (en) | 1988-06-24 | 1988-06-24 | Air cleaner intake duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988084243U JPH0621530Y2 (en) | 1988-06-24 | 1988-06-24 | Air cleaner intake duct |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH024612U JPH024612U (en) | 1990-01-12 |
| JPH0621530Y2 true JPH0621530Y2 (en) | 1994-06-08 |
Family
ID=31308941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988084243U Expired - Lifetime JPH0621530Y2 (en) | 1988-06-24 | 1988-06-24 | Air cleaner intake duct |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0621530Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6825944B2 (en) * | 2017-03-14 | 2021-02-03 | 日本電信電話株式会社 | Particle collector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5665610A (en) * | 1979-11-02 | 1981-06-03 | Hitachi Ltd | Dust removing device in pipe |
| JPS57156013A (en) * | 1981-02-05 | 1982-09-27 | Truetzschler & Co | Method and device for separating foreign matter from material cotton containing foreign matter |
| JPS60149418U (en) * | 1984-03-16 | 1985-10-04 | スズキ株式会社 | Automotive air cleaner air intake |
-
1988
- 1988-06-24 JP JP1988084243U patent/JPH0621530Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH024612U (en) | 1990-01-12 |
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