WO2021124838A1 - Air intake device - Google Patents
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- WO2021124838A1 WO2021124838A1 PCT/JP2020/044285 JP2020044285W WO2021124838A1 WO 2021124838 A1 WO2021124838 A1 WO 2021124838A1 JP 2020044285 W JP2020044285 W JP 2020044285W WO 2021124838 A1 WO2021124838 A1 WO 2021124838A1
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- wall
- facing
- peripheral
- inlet
- peripheral wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/024—Air cleaners using filters, e.g. moistened
Definitions
- This disclosure relates to an intake device.
- An air cleaner that filters the intake air is provided in the intake passage of the internal combustion engine (see, for example, Patent Document 1).
- the air cleaner described in Patent Document 1 includes a housing and a panel type filter element.
- the housing has an inlet and an outlet.
- the filter element is configured to partition the inside of the housing into a dusty chamber including an inlet and a clean chamber including an outlet and to filter the intake air.
- the housing is composed of a case having a bottom wall, a peripheral wall, and an inlet, and a cap having a top wall, a peripheral wall, and an outlet.
- the inlet is provided on the peripheral wall.
- the filter element is provided between the upper opening surrounded by the peripheral wall of the case and the lower opening surrounded by the peripheral wall of the cap.
- the intake air flowing into the case from the inlet is filtered when passing through the filter element and flows out from the outlet to the downstream side.
- An object of the present disclosure is to provide an intake device capable of reducing the pressure loss of intake air.
- An intake device for achieving the above object is configured to partition a housing having an inlet and an outlet, a dusty chamber including the inlet, and a clean chamber including the outlet, and to filter the intake air.
- the housing is provided with a panel-type filter element, each of which is a wall forming the dusty chamber, and has a peripheral wall surrounding the peripheral surface of the filtration portion of the filter element and a main surface of the filtration portion.
- the peripheral wall includes a first wall portion and a second wall portion opposite to the first wall portion, and the inlet is opened in the first wall portion.
- the facing wall is inclined from the first wall portion side toward the second wall portion side so that the distance from the main surface of the filtration portion increases.
- the cross-sectional area of the dusty chamber along the opening surface of the inlet gradually increases from the first wall side to the second wall side. Therefore, in the dusty chamber, the flow velocity of the intake air is reduced, and the collision of the intake air with the second wall portion is suppressed. As a result, the disturbance of the intake air flow is suppressed in the dusty room. Therefore, the pressure loss of the intake air can be reduced.
- FIG. 1 is a cross-sectional view of a part of an air cleaner and an inlet duct for one embodiment of an intake device.
- FIG. 2 is a cross-sectional view taken along the line 2-2 of FIG.
- an inlet duct 50 and an air cleaner 10 constituting an intake device are provided in order from the upstream side in the intake flow direction.
- the air cleaner 10 includes a housing 11 and a panel-type filter element 40.
- the housing 11 has an inlet 25 and an outlet 35.
- the filter element 40 is configured to partition the inside of the housing 11 into a dusty chamber D including an inlet 25 and a clean chamber C including an outlet 35 and to filter intake air.
- the housing 11 includes a case 20 having an upper opening 21 and a cap 30 having a lower opening 31 facing the upper opening 21.
- Both the case 20 and the cap 30 are made of a hard synthetic resin material. Further, the upper opening 21 of the case 20 and the lower opening 31 of the cap 30 both have a quadrangular shape.
- the case 20 has a peripheral wall 23 surrounding the upper opening 21 and a first facing wall 24 facing the upper opening 21.
- the peripheral wall 23 and the first facing wall 24 form a dusty chamber D.
- a flange 22 is formed on the peripheral edge of the upper opening 21 of the case 20.
- An inlet 25 for introducing the intake air from the inlet duct 50 into the case 20 is opened in the first wall portion 23a of the peripheral wall 23.
- the cap 30 has a peripheral wall 33 surrounding the lower opening 31 and a top wall 34 facing the lower opening 31.
- a flange 32 is formed on the peripheral edge of the lower opening 31 of the cap 30.
- a tubular outlet 35 for deriving the intake air toward the combustion chamber (not shown) of the internal combustion engine is projected outward from the peripheral wall 33.
- the filter element 40 is provided between the upper opening 21 of the case 20 and the lower opening 31 of the cap 30.
- the filter element 40 has a rectangular shape in a plan view corresponding to the shapes of the upper opening 21 of the case 20 and the lower opening 31 of the cap 30.
- the filter element 40 has a panel-type filter portion 41 formed by folding a filter medium such as filter paper, and a seal portion 42 formed on the peripheral edge of the filter portion 41.
- the filtration unit 41 has a flat rectangular parallelepiped shape.
- the filtration unit 41 has a peripheral surface 41a composed of four rectangular surfaces long in the circumferential direction, and a rectangular main surface 41b facing the first facing wall 24.
- the peripheral surface 41a is surrounded by the peripheral wall 23 of the case 20.
- the main surface 41b faces the first facing wall 24.
- the seal portion 42 is formed of a closed cell polyurethane resin or the like.
- the seal portion 42 is sandwiched between the flange 22 of the case 20 and the flange 32 of the cap 30 in a compressed state, so that the case 20 and the cap 30 are sealed.
- the first facing wall 24 of the case 20 is directed from the first wall portion 23a side toward the second wall portion 23b side of the peripheral wall 23 opposite to the first wall portion 23a. It is inclined so that the distance from the main surface 41b is large.
- the inlet duct 50 is connected to the inlet 25 of the case 20.
- the inlet duct 50 has a tubular portion 51 that projects outward from the peripheral wall 23 from the peripheral edge of the opening of the inlet 25 on the peripheral wall 23.
- the tubular portion 51 has an extending wall 52 and a second facing wall 53.
- the extending wall 52 is connected to the first facing wall 24 and extends along the first facing wall 24 toward the upstream side in the flow direction of the intake air.
- the second facing wall 53 is connected to the peripheral wall 23 and faces the extending wall 52.
- the second facing wall 53 extends along the main surface 41b of the filtration unit 41. In the present embodiment, the distance between the extending wall 52 and the second facing wall 53 is increased as it approaches the peripheral wall 23.
- the tubular portion 51 has a pair of side walls 54. These side walls 54 are connected to the peripheral wall 23 and are located between the extending wall 52 and the second facing wall 53. In the present embodiment, the distance between the side walls 54 increases as the distance between the side walls 54 approaches the peripheral wall 23.
- the first facing wall 24 is with the main surface 41b of the filtration unit 41 from the side of the first wall portion 23a toward the side of the peripheral wall 23 opposite to the first wall portion 23a and the second wall portion 23b. It is tilted so that the distance is large.
- the cross-sectional area of the dusty chamber D along the opening surface of the inlet 25 gradually increases from the first wall portion 23a side to the second wall portion 23b side. Therefore, in the dusty chamber D, the flow velocity of the intake air is reduced, and the collision of the intake air with the second wall portion 23b is suppressed. As a result, the disturbance of the intake air flow in the dusty chamber D is suppressed. Therefore, the pressure loss of the intake air can be reduced.
- the intake air whose flow velocity is reduced in the dusty chamber D tends to flow toward the portion of the filtration portion 41 of the filter element 40 that is closer to the second wall portion 23b. Therefore, the intake air can be filtered using the wider portion of the filtration unit 41.
- the cross-sectional area in the tubular portion 51 along the opening surface of the inlet 25 gradually increases toward the inlet 25. Therefore, the flow velocity of the intake air is reduced in the tubular portion 51. As a result, when the intake air flows into the peripheral wall 23 through the inlet 25, the flow is less likely to be disturbed. Therefore, the pressure loss of the intake air can be further reduced.
- the intake air whose flow velocity is reduced in the tubular portion 51 tends to flow toward the portion of the filtration portion 41 of the filter element 40 that is closer to the first wall portion 23a. Therefore, the intake air can be filtered using the wider portion of the filtration unit 41.
- the cross-sectional area in the tubular portion 51 along the opening surface of the inlet 25 gradually increases toward the inlet 25. Therefore, the flow velocity of the intake air is reduced in the tubular portion 51. As a result, when the intake air flows into the peripheral wall 23 through the inlet 25, the flow is less likely to be disturbed. Therefore, the pressure loss of the intake air can be further reduced.
- the intake air whose flow velocity is reduced in the tubular portion 51 tends to flow toward the portion of the filtration portion 41 of the filter element 40 that is closer to the first wall portion 23a. Therefore, the intake air can be filtered using the wider portion of the filtration unit 41.
- the tubular portion 51 is composed of an inlet duct 50.
- a tubular portion 51 projecting outward from the peripheral edge of the opening of the inlet 25 on the peripheral wall 23 is provided as an inlet duct 50 separate from the case 20. Therefore, since the shape of the case 20 is simplified, the case 20 can be easily molded.
- This embodiment can be implemented by changing as follows.
- the present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
- the inner surface of the first facing wall 24 is approached from the first wall portion 23a side toward the second wall portion 23b side toward the main surface 41b of the filtration portion 41.
- An extending straightening vane 60 can also be provided.
- the intake air flowing into the dusty chamber D from the inlet 25 is rectified by the rectifying plate 60 so as to approach the main surface 41b of the filtration unit 41.
- the first facing wall 24 is inclined so as to increase the distance from the main surface 41b. Therefore, the collision of the intake air with the second wall portion 23b is further suppressed, and the effect according to the above effect (1) can be obtained.
- the tubular portion 51 may be configured as a part of the case 20 instead of being configured as a part of the inlet duct 50.
- the distance between the side walls 54 of the tubular portion 51 is not limited to a larger one as it approaches the peripheral wall 23, and may be constant.
- the distance between the extending wall 52 of the tubular portion 51 and the second facing wall 53 is not limited to a larger one as it approaches the peripheral wall 23, and may be constant.
- the position of the outlet 35 can be changed to an arbitrary position on the peripheral wall 33 or the top wall 34 of the cap 30.
- the housing 11 according to the present invention is not limited to one in which the case 20 and the cap 30 are provided so as to be separable from each other. That is, the case 20 and the cap 30 may be provided inseparably.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
An air intake device comprising a housing and a panel-type filter element. The housing has an inlet and an outlet. The filter element is configured so as to partition the housing interior into a dusty chamber including the inlet and a clean chamber including the outlet, and so as to filter intake air. The housing has a peripheral wall enclosing a peripheral surface of a filtering section of the filter element and an opposing wall that opposes a main surface of the filtering section, said walls forming the dusty chamber. The peripheral wall includes a first wall section and a second wall section on the side opposite from the first wall section. The inlet opens in the first wall section. The opposing wall is inclined so that the distance to the main surface of the filtering section increases from the first-wall-section side toward the second-wall-section side.
Description
本開示は、吸気装置に関する。
This disclosure relates to an intake device.
内燃機関の吸気通路には、吸気を濾過するエアクリーナが設けられている（例えば特許文献１参照）。
An air cleaner that filters the intake air is provided in the intake passage of the internal combustion engine (see, for example, Patent Document 1).
特許文献１に記載のエアクリーナは、ハウジング及びパネル型のフィルタエレメントを備えている。ハウジングは、インレット及びアウトレットを有している。フィルタエレメントは、ハウジング内を、インレットを含むダスティ室と、アウトレットを含むクリーン室とに仕切るとともに吸気を濾過するように構成されている。ハウジングは、底壁、周壁、及びインレットを有するケースと、頂壁、周壁、及びアウトレットを有するキャップとにより構成されている。インレットは、周壁に設けられている。フィルタエレメントは、ケースの周壁によって囲まれた上部開口とキャップの周壁によって囲まれた下部開口との間に設けられている。
The air cleaner described in Patent Document 1 includes a housing and a panel type filter element. The housing has an inlet and an outlet. The filter element is configured to partition the inside of the housing into a dusty chamber including an inlet and a clean chamber including an outlet and to filter the intake air. The housing is composed of a case having a bottom wall, a peripheral wall, and an inlet, and a cap having a top wall, a peripheral wall, and an outlet. The inlet is provided on the peripheral wall. The filter element is provided between the upper opening surrounded by the peripheral wall of the case and the lower opening surrounded by the peripheral wall of the cap.
こうしたエアクリーナを備える内燃機関においては、インレットからケース内に流入した吸気がフィルタエレメントを通過する際に濾過され、アウトレットから下流側に流出する。
In an internal combustion engine equipped with such an air cleaner, the intake air flowing into the case from the inlet is filtered when passing through the filter element and flows out from the outlet to the downstream side.
ところで、こうしたエアクリーナにおいては、インレットからケース内に流入した吸気が、周壁におけるインレットが開口する壁部とは反対側の壁部に勢いよく衝突しやすい。そのため、ダスティ室内において吸気の流れが乱れやすく、吸気の圧力損失を増大させる一因となっている。
By the way, in such an air cleaner, the intake air that has flowed into the case from the inlet tends to collide vigorously with the wall portion on the peripheral wall opposite to the wall portion where the inlet opens. Therefore, the flow of intake air is easily disturbed in the dusty chamber, which is one of the factors that increase the pressure loss of intake air.
本開示の目的は、吸気の圧力損失を低減することのできる吸気装置を提供することにある。
An object of the present disclosure is to provide an intake device capable of reducing the pressure loss of intake air.
上記目的を達成するための吸気装置は、インレット及びアウトレットを有するハウジングと、前記ハウジング内を、前記インレットを含むダスティ室と、前記アウトレットを含むクリーン室とに仕切るとともに吸気を濾過するように構成されたパネル型のフィルタエレメントと、を備えており、前記ハウジングは、いずれも前記ダスティ室を形成する壁であって、前記フィルタエレメントの濾過部の周面を取り囲む周壁と、前記濾過部の主面に対向する対向壁と、を有しており、前記周壁は、第１壁部及び前記第１壁部とは反対側の第２壁部を含み、前記インレットは、前記第１壁部に開口しており、前記対向壁は、前記第１壁部側から、前記第２壁部側に向かって、前記濾過部の前記主面との距離が大きくなるように傾斜している。
An intake device for achieving the above object is configured to partition a housing having an inlet and an outlet, a dusty chamber including the inlet, and a clean chamber including the outlet, and to filter the intake air. The housing is provided with a panel-type filter element, each of which is a wall forming the dusty chamber, and has a peripheral wall surrounding the peripheral surface of the filtration portion of the filter element and a main surface of the filtration portion. The peripheral wall includes a first wall portion and a second wall portion opposite to the first wall portion, and the inlet is opened in the first wall portion. The facing wall is inclined from the first wall portion side toward the second wall portion side so that the distance from the main surface of the filtration portion increases.
同構成によれば、インレットの開口面に沿うダスティ室の断面積が、第１壁部側から第２壁部側に向かって徐々に大きくなる。このため、ダスティ室内において、吸気の流速が低減されるようになり、吸気の第２壁部への衝突が抑制されるようになる。これにより、ダスティ室内において吸気の流れが乱れることが抑制される。したがって、吸気の圧力損失を低減することができる。
According to the same configuration, the cross-sectional area of the dusty chamber along the opening surface of the inlet gradually increases from the first wall side to the second wall side. Therefore, in the dusty chamber, the flow velocity of the intake air is reduced, and the collision of the intake air with the second wall portion is suppressed. As a result, the disturbance of the intake air flow is suppressed in the dusty room. Therefore, the pressure loss of the intake air can be reduced.
以下、図１及び図２を参照して、一実施形態について説明する。
Hereinafter, one embodiment will be described with reference to FIGS. 1 and 2.
図１に示すように、内燃機関の吸気通路には、吸気装置を構成するインレットダクト５０及びエアクリーナ１０が、吸気の流れ方向の上流側から順に設けられている。
As shown in FIG. 1, in the intake passage of the internal combustion engine, an inlet duct 50 and an air cleaner 10 constituting an intake device are provided in order from the upstream side in the intake flow direction.
＜エアクリーナ１０＞
エアクリーナ１０は、ハウジング１１及びパネル型のフィルタエレメント４０を備えている。ハウジング１１は、インレット２５及びアウトレット３５を有している。フィルタエレメント４０は、ハウジング１１内を、インレット２５を含むダスティ室Ｄと、アウトレット３５を含むクリーン室Ｃとに仕切るとともに吸気を濾過するように構成されている。 <Air cleaner 10>
Theair cleaner 10 includes a housing 11 and a panel-type filter element 40. The housing 11 has an inlet 25 and an outlet 35. The filter element 40 is configured to partition the inside of the housing 11 into a dusty chamber D including an inlet 25 and a clean chamber C including an outlet 35 and to filter intake air.
エアクリーナ１０は、ハウジング１１及びパネル型のフィルタエレメント４０を備えている。ハウジング１１は、インレット２５及びアウトレット３５を有している。フィルタエレメント４０は、ハウジング１１内を、インレット２５を含むダスティ室Ｄと、アウトレット３５を含むクリーン室Ｃとに仕切るとともに吸気を濾過するように構成されている。 <
The
ハウジング１１は、上部開口２１を有するケース２０と、上部開口２１に向かい合う下部開口３１を有するキャップ３０とを備えている。ケース２０及びキャップ３０は共に硬質の合成樹脂材料によって形成されている。また、ケース２０の上部開口２１及びキャップ３０の下部開口３１は共に四角形状をなしている。
The housing 11 includes a case 20 having an upper opening 21 and a cap 30 having a lower opening 31 facing the upper opening 21. Both the case 20 and the cap 30 are made of a hard synthetic resin material. Further, the upper opening 21 of the case 20 and the lower opening 31 of the cap 30 both have a quadrangular shape.
ケース２０は、上部開口２１を取り囲む周壁２３と、上部開口２１に対向する第１対向壁２４とを有している。周壁２３及び第１対向壁２４は、ダスティ室Ｄを形成する。ケース２０の上部開口２１の周縁には、フランジ２２が形成されている。周壁２３の第１壁部２３ａには、インレットダクト５０からの吸気をケース２０内に導入するためのインレット２５が開口している。
The case 20 has a peripheral wall 23 surrounding the upper opening 21 and a first facing wall 24 facing the upper opening 21. The peripheral wall 23 and the first facing wall 24 form a dusty chamber D. A flange 22 is formed on the peripheral edge of the upper opening 21 of the case 20. An inlet 25 for introducing the intake air from the inlet duct 50 into the case 20 is opened in the first wall portion 23a of the peripheral wall 23.
キャップ３０は、下部開口３１を取り囲む周壁３３と、下部開口３１に対向する頂壁３４とを有している。キャップ３０の下部開口３１の周縁には、フランジ３２が形成されている。周壁３３には、内燃機関の燃焼室（図示略）に向けて吸気を導出するための筒状のアウトレット３５が外方に向けて突設されている。
The cap 30 has a peripheral wall 33 surrounding the lower opening 31 and a top wall 34 facing the lower opening 31. A flange 32 is formed on the peripheral edge of the lower opening 31 of the cap 30. A tubular outlet 35 for deriving the intake air toward the combustion chamber (not shown) of the internal combustion engine is projected outward from the peripheral wall 33.
フィルタエレメント４０は、ケース２０の上部開口２１とキャップ３０の下部開口３１との間に設けられている。フィルタエレメント４０は、ケース２０の上部開口２１及びキャップ３０の下部開口３１の形状に対応した平面視四角形状をなしている。
The filter element 40 is provided between the upper opening 21 of the case 20 and the lower opening 31 of the cap 30. The filter element 40 has a rectangular shape in a plan view corresponding to the shapes of the upper opening 21 of the case 20 and the lower opening 31 of the cap 30.
フィルタエレメント４０は、濾紙などの濾材を襞折りすることにより形成されたパネル型の濾過部４１と、濾過部４１の周縁に形成されたシール部４２とを有している。
The filter element 40 has a panel-type filter portion 41 formed by folding a filter medium such as filter paper, and a seal portion 42 formed on the peripheral edge of the filter portion 41.
濾過部４１は、扁平な直方体状をなしている。濾過部４１は、周方向に長い４つの長方形の面により構成される周面４１ａと、第１対向壁２４に対向する四角形状の主面４１ｂとを有している。周面４１ａは、ケース２０の周壁２３により取り囲まれている。主面４１ｂは、第１対向壁２４に対向している。
The filtration unit 41 has a flat rectangular parallelepiped shape. The filtration unit 41 has a peripheral surface 41a composed of four rectangular surfaces long in the circumferential direction, and a rectangular main surface 41b facing the first facing wall 24. The peripheral surface 41a is surrounded by the peripheral wall 23 of the case 20. The main surface 41b faces the first facing wall 24.
シール部４２は独立気泡のポリウレタン樹脂などにより形成されている。
The seal portion 42 is formed of a closed cell polyurethane resin or the like.
シール部４２がケース２０のフランジ２２とキャップ３０のフランジ３２とによって圧縮された状態で挟持されることで、ケース２０とキャップ３０との間がシールされている。
The seal portion 42 is sandwiched between the flange 22 of the case 20 and the flange 32 of the cap 30 in a compressed state, so that the case 20 and the cap 30 are sealed.
本実施形態では、ケース２０の第１対向壁２４が、第１壁部２３ａ側から、周壁２３における第１壁部２３ａとは反対側の第２壁部２３ｂ側に向かって、濾過部４１の主面４１ｂとの距離が大きくなるように傾斜している。
In the present embodiment, the first facing wall 24 of the case 20 is directed from the first wall portion 23a side toward the second wall portion 23b side of the peripheral wall 23 opposite to the first wall portion 23a. It is inclined so that the distance from the main surface 41b is large.
＜インレットダクト５０＞
図１及び図２に示すように、インレットダクト５０は、ケース２０のインレット２５に接続されている。 <Inletduct 50>
As shown in FIGS. 1 and 2, theinlet duct 50 is connected to the inlet 25 of the case 20.
図１及び図２に示すように、インレットダクト５０は、ケース２０のインレット２５に接続されている。 <Inlet
As shown in FIGS. 1 and 2, the
インレットダクト５０は、周壁２３におけるインレット２５の開口の周縁から周壁２３の外方に向かって突出する筒部５１を有している。
The inlet duct 50 has a tubular portion 51 that projects outward from the peripheral wall 23 from the peripheral edge of the opening of the inlet 25 on the peripheral wall 23.
図１に示すように、筒部５１は、延在壁５２及び第２対向壁５３を有している。延在壁５２は、第１対向壁２４に連なるとともに第１対向壁２４に沿って吸気の流れ方向の上流側に向かって延在している。第２対向壁５３は、周壁２３に連なるとともに延在壁５２に対向している。第２対向壁５３は、濾過部４１の主面４１ｂに沿って延在している。本実施形態では、延在壁５２と第２対向壁５３との距離が、周壁２３に近づくほど大きくされている。
As shown in FIG. 1, the tubular portion 51 has an extending wall 52 and a second facing wall 53. The extending wall 52 is connected to the first facing wall 24 and extends along the first facing wall 24 toward the upstream side in the flow direction of the intake air. The second facing wall 53 is connected to the peripheral wall 23 and faces the extending wall 52. The second facing wall 53 extends along the main surface 41b of the filtration unit 41. In the present embodiment, the distance between the extending wall 52 and the second facing wall 53 is increased as it approaches the peripheral wall 23.
図２に示すように、筒部５１は、一対の側壁５４を有している。これら側壁５４は、周壁２３に連なるとともに延在壁５２と第２対向壁５３との間に位置している。本実施形態では、側壁５４同士の距離が、周壁２３に近づくほど大きくされている。
As shown in FIG. 2, the tubular portion 51 has a pair of side walls 54. These side walls 54 are connected to the peripheral wall 23 and are located between the extending wall 52 and the second facing wall 53. In the present embodiment, the distance between the side walls 54 increases as the distance between the side walls 54 approaches the peripheral wall 23.
次に、本実施形態の作用効果について説明する。
Next, the action and effect of this embodiment will be described.
（１）第１対向壁２４は、第１壁部２３ａ側から、周壁２３における第１壁部２３ａとは反対側の第２壁部２３ｂ側に向かって、濾過部４１の主面４１ｂとの距離が大きくなるように傾斜している。
(1) The first facing wall 24 is with the main surface 41b of the filtration unit 41 from the side of the first wall portion 23a toward the side of the peripheral wall 23 opposite to the first wall portion 23a and the second wall portion 23b. It is tilted so that the distance is large.
こうした構成によれば、インレット２５の開口面に沿うダスティ室Ｄの断面積が、第１壁部２３ａ側から第２壁部２３ｂ側に向かって徐々に大きくなる。このため、ダスティ室Ｄ内において、吸気の流速が低減されるようになり、吸気の第２壁部２３ｂへの衝突が抑制されるようになる。これにより、ダスティ室Ｄ内において吸気の流れが乱れることが抑制される。したがって、吸気の圧力損失を低減することができる。
According to such a configuration, the cross-sectional area of the dusty chamber D along the opening surface of the inlet 25 gradually increases from the first wall portion 23a side to the second wall portion 23b side. Therefore, in the dusty chamber D, the flow velocity of the intake air is reduced, and the collision of the intake air with the second wall portion 23b is suppressed. As a result, the disturbance of the intake air flow in the dusty chamber D is suppressed. Therefore, the pressure loss of the intake air can be reduced.
また、ダスティ室Ｄ内において流速が低減された吸気は、フィルタエレメント４０の濾過部４１のうち第２壁部２３ｂに近い部分に向かって流れやすくなる。したがって、濾過部４１のより広い部分を使って吸気の濾過を行うことができる。
Further, the intake air whose flow velocity is reduced in the dusty chamber D tends to flow toward the portion of the filtration portion 41 of the filter element 40 that is closer to the second wall portion 23b. Therefore, the intake air can be filtered using the wider portion of the filtration unit 41.
（２）筒部５１の延在壁５２と第２対向壁５３との距離は、周壁２３に近づくほど大きい。
(2) The distance between the extending wall 52 of the tubular portion 51 and the second facing wall 53 increases as it approaches the peripheral wall 23.
こうした構成によれば、インレット２５の開口面に沿う筒部５１内の断面積が、インレット２５に向かって徐々に大きくなる。このため、筒部５１内において、吸気の流速が低減されるようになる。これにより、吸気がインレット２５を通じて周壁２３内に流入した際に、その流れが乱れにくくなる。したがって、吸気の圧力損失を一層低減することができる。
According to such a configuration, the cross-sectional area in the tubular portion 51 along the opening surface of the inlet 25 gradually increases toward the inlet 25. Therefore, the flow velocity of the intake air is reduced in the tubular portion 51. As a result, when the intake air flows into the peripheral wall 23 through the inlet 25, the flow is less likely to be disturbed. Therefore, the pressure loss of the intake air can be further reduced.
また、筒部５１内において流速が低減された吸気は、フィルタエレメント４０の濾過部４１のうち第１壁部２３ａに近い部分に向かって流れやすくなる。したがって、濾過部４１のより広い部分を使って吸気の濾過を行うことができる。
Further, the intake air whose flow velocity is reduced in the tubular portion 51 tends to flow toward the portion of the filtration portion 41 of the filter element 40 that is closer to the first wall portion 23a. Therefore, the intake air can be filtered using the wider portion of the filtration unit 41.
（３）筒部５１の側壁５４同士の距離は、周壁２３に近づくほど大きい。
(3) The distance between the side walls 54 of the tubular portion 51 increases as it approaches the peripheral wall 23.
こうした構成によれば、インレット２５の開口面に沿う筒部５１内の断面積が、インレット２５に向かって徐々に大きくなる。このため、筒部５１内において、吸気の流速が低減されるようになる。これにより、吸気がインレット２５を通じて周壁２３内に流入した際に、その流れが乱れにくくなる。したがって、吸気の圧力損失を一層低減することができる。
According to such a configuration, the cross-sectional area in the tubular portion 51 along the opening surface of the inlet 25 gradually increases toward the inlet 25. Therefore, the flow velocity of the intake air is reduced in the tubular portion 51. As a result, when the intake air flows into the peripheral wall 23 through the inlet 25, the flow is less likely to be disturbed. Therefore, the pressure loss of the intake air can be further reduced.
また、筒部５１内において流速が低減された吸気は、フィルタエレメント４０の濾過部４１のうち第１壁部２３ａに近い部分に向かって流れやすくなる。したがって、濾過部４１のより広い部分を使って吸気の濾過を行うことができる。
Further, the intake air whose flow velocity is reduced in the tubular portion 51 tends to flow toward the portion of the filtration portion 41 of the filter element 40 that is closer to the first wall portion 23a. Therefore, the intake air can be filtered using the wider portion of the filtration unit 41.
（４）筒部５１は、インレットダクト５０により構成されている。
(4) The tubular portion 51 is composed of an inlet duct 50.
こうした構成によれば、周壁２３におけるインレット２５の開口の周縁から外方に向かって突出する筒部５１がケース２０とは別体のインレットダクト５０として設けられる。このため、ケース２０の形状が簡単になるため、ケース２０を容易に成形することができる。
According to such a configuration, a tubular portion 51 projecting outward from the peripheral edge of the opening of the inlet 25 on the peripheral wall 23 is provided as an inlet duct 50 separate from the case 20. Therefore, since the shape of the case 20 is simplified, the case 20 can be easily molded.
本実施形態は、以下のように変更して実施することができる。本実施形態及び以下の変更例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。
This embodiment can be implemented by changing as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
・図１に二点鎖線にて示すように、第１対向壁２４の内面に、第１壁部２３ａ側から、第２壁部２３ｂ側に向かって濾過部４１の主面４１ｂに近づくように延在する整流板６０を設けることもできる。この場合、インレット２５からダスティ室Ｄ内に流入した吸気が整流板６０によって濾過部４１の主面４１ｂに近づくように整流される。また、この場合であっても、整流板６０が設けられる部分よりも吸気の流れ方向の上流側において、第１壁部２３ａ側から第２壁部２３ｂ側に向かって、第１対向壁２４と濾過部４１の主面４１ｂとの距離が大きくなるように傾斜している。このため、吸気の第２壁部２３ｂへの衝突が一層抑制されるようになり、上記効果（１）に準じた効果を奏することができる。
As shown by the alternate long and short dash line in FIG. 1, the inner surface of the first facing wall 24 is approached from the first wall portion 23a side toward the second wall portion 23b side toward the main surface 41b of the filtration portion 41. An extending straightening vane 60 can also be provided. In this case, the intake air flowing into the dusty chamber D from the inlet 25 is rectified by the rectifying plate 60 so as to approach the main surface 41b of the filtration unit 41. Further, even in this case, on the upstream side in the intake flow direction from the portion where the straightening vane 60 is provided, from the first wall portion 23a side to the second wall portion 23b side, the first facing wall 24 The filtration unit 41 is inclined so as to increase the distance from the main surface 41b. Therefore, the collision of the intake air with the second wall portion 23b is further suppressed, and the effect according to the above effect (1) can be obtained.
・筒部５１をインレットダクト５０の一部として構成するのではなく、ケース２０の一部として構成するようにしてもよい。
-The tubular portion 51 may be configured as a part of the case 20 instead of being configured as a part of the inlet duct 50.
・筒部５１の側壁５４同士の距離は、周壁２３に近づくほど大きいものに限定されず、一定であってもよい。
The distance between the side walls 54 of the tubular portion 51 is not limited to a larger one as it approaches the peripheral wall 23, and may be constant.
・筒部５１の延在壁５２と第２対向壁５３との距離は、周壁２３に近づくほど大きいものに限定されず、一定であってもよい。
The distance between the extending wall 52 of the tubular portion 51 and the second facing wall 53 is not limited to a larger one as it approaches the peripheral wall 23, and may be constant.
・アウトレット３５の位置を、キャップ３０の周壁３３または頂壁３４の任意の位置に変更することができる。
-The position of the outlet 35 can be changed to an arbitrary position on the peripheral wall 33 or the top wall 34 of the cap 30.
・本発明に係るハウジング１１は、ケース２０とキャップ３０とが互いに分離可能に設けられるものに限定されない。すなわち、ケース２０とキャップ３０とが分離不能に設けられるものであってもよい。
-The housing 11 according to the present invention is not limited to one in which the case 20 and the cap 30 are provided so as to be separable from each other. That is, the case 20 and the cap 30 may be provided inseparably.
１０…エアクリーナ
１１…ハウジング
２０…ケース
２１…上部開口
２２…フランジ
２３…周壁
２３ａ…第１壁部
２３ｂ…第２壁部
２４…第１対向壁
２５…インレット
３０…キャップ
３１…下部開口
３２…フランジ
３３…周壁
３４…頂壁
３５…アウトレット
４０…フィルタエレメント
４１…濾過部
４１ａ…周面
４１ｂ…主面
４２…シール部
５０…インレットダクト
５１…筒部、
５２…延在壁
５３…第２対向壁
５４…側壁
６０…整流板
Ｃ…クリーン室
Ｄ…ダスティ室 10 ...Air cleaner 11 ... Housing 20 ... Case 21 ... Upper opening 22 ... Flange 23 ... Peripheral wall 23a ... First wall 23b ... Second wall 24 ... First facing wall 25 ... Inlet 30 ... Cap 31 ... Lower opening 32 ... Flange 33 ... Peripheral wall 34 ... Top wall 35 ... Outlet 40 ... Filter element 41 ... Filtration part 41a ... Peripheral surface 41b ... Main surface 42 ... Seal part 50 ... Inlet duct 51 ... Cylinder part,
52 ...Extended wall 53 ... Second facing wall 54 ... Side wall 60 ... Rectifying plate C ... Clean room D ... Dusty room
１１…ハウジング
２０…ケース
２１…上部開口
２２…フランジ
２３…周壁
２３ａ…第１壁部
２３ｂ…第２壁部
２４…第１対向壁
２５…インレット
３０…キャップ
３１…下部開口
３２…フランジ
３３…周壁
３４…頂壁
３５…アウトレット
４０…フィルタエレメント
４１…濾過部
４１ａ…周面
４１ｂ…主面
４２…シール部
５０…インレットダクト
５１…筒部、
５２…延在壁
５３…第２対向壁
５４…側壁
６０…整流板
Ｃ…クリーン室
Ｄ…ダスティ室 10 ...
52 ...
Claims (4)
- インレット及びアウトレットを有するハウジングと、
前記ハウジング内を、前記インレットを含むダスティ室と、前記アウトレットを含むクリーン室とに仕切るとともに吸気を濾過するように構成されたパネル型のフィルタエレメントと、を備えており、
前記ハウジングは、いずれも前記ダスティ室を形成する壁であって、前記フィルタエレメントの濾過部の周面を取り囲む周壁と、前記濾過部の主面に対向する対向壁と、を有しており、
前記周壁は、第１壁部及び前記第１壁部とは反対側の第２壁部を含み、
前記インレットは、前記第１壁部に開口しており、
前記対向壁は、前記第１壁部側から、前記第２壁部側に向かって、前記濾過部の前記主面との距離が大きくなるように傾斜している、
吸気装置。 A housing with inlets and outlets,
The inside of the housing is provided with a panel-type filter element configured to partition the inside of the housing into a dusty chamber including the inlet and a clean chamber including the outlet and to filter the intake air.
Each of the housings is a wall forming the dusty chamber, and has a peripheral wall surrounding the peripheral surface of the filtration portion of the filter element and an opposing wall facing the main surface of the filtration portion.
The peripheral wall includes a first wall portion and a second wall portion on the opposite side of the first wall portion.
The inlet is open to the first wall portion.
The facing wall is inclined from the first wall portion side toward the second wall portion side so that the distance from the main surface of the filtration portion increases.
Intake device. - 前記周壁における前記インレットの開口の周縁から前記周壁の外方に向かって突出する筒部を備えており、
前記対向壁を第１対向壁とするとき、
前記筒部は、前記第１対向壁に連なるとともに前記第１対向壁に沿って吸気の流れ方向の上流側に向かって延在する延在壁と、前記周壁に連なるとともに前記延在壁に対向する第２対向壁とを有しており、
前記延在壁と前記第２対向壁との距離は、前記周壁に近づくほど大きい、
請求項１に記載の吸気装置。 It is provided with a tubular portion that projects outward from the peripheral wall from the peripheral edge of the inlet opening in the peripheral wall.
When the facing wall is used as the first facing wall,
The tubular portion is connected to the first facing wall and extends toward the upstream side in the intake flow direction along the first facing wall, and is connected to the peripheral wall and faces the extending wall. Has a second facing wall
The distance between the extending wall and the second facing wall increases as it approaches the peripheral wall.
The intake device according to claim 1. - 前記周壁における前記インレットの開口の周縁から前記周壁の外方に向かって突出する筒部を備えており、
前記対向壁を第１対向壁とするとき、
前記筒部は、前記第１対向壁に連なるとともに前記第１対向壁に沿って吸気の流れ方向の上流側に向かって延在する延在壁と、前記周壁に連なるとともに前記延在壁に対向する第２対向壁とを有しており、
前記筒部は、前記周壁に連なるとともに前記延在壁と第２対向壁との間に位置する一対の側壁を有しており、
前記側壁同士の距離は、前記周壁に近づくほど大きい、
請求項１または請求項２に記載の吸気装置。 It is provided with a tubular portion that projects outward from the peripheral wall from the peripheral edge of the inlet opening in the peripheral wall.
When the facing wall is used as the first facing wall,
The tubular portion is connected to the first facing wall and extends toward the upstream side in the intake flow direction along the first facing wall, and is connected to the peripheral wall and faces the extending wall. Has a second facing wall
The tubular portion has a pair of side walls that are connected to the peripheral wall and are located between the extending wall and the second facing wall.
The distance between the side walls increases as it approaches the peripheral wall.
The intake device according to claim 1 or 2. - 前記インレットに接続されるインレットダクトを備え、
前記筒部は、前記インレットダクトにより構成されている、
請求項２または請求項３に記載の吸気装置。 Equipped with an inlet duct connected to the inlet
The tubular portion is composed of the inlet duct.
The intake device according to claim 2 or 3.
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| JP2019230013A JP2021099038A (en) | 2019-12-20 | 2019-12-20 | Intake system |
| JP2019-230013 | 2019-12-20 |
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| PCT/JP2020/044285 WO2021124838A1 (en) | 2019-12-20 | 2020-11-27 | Air intake device |
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|---|---|---|---|---|
| JPS62178767A (en) * | 1986-01-30 | 1987-08-05 | Yamaha Motor Co Ltd | Air cleaner |
| JP2013050059A (en) * | 2011-08-30 | 2013-03-14 | Toyota Boshoku Corp | Case of air cleaner and molding apparatus for the case |
| JP2014066242A (en) * | 2012-08-30 | 2014-04-17 | Mgi Coutier | Air filtering device in intake pipeline of internal combustion engine |
| JP2015068227A (en) * | 2013-09-27 | 2015-04-13 | スズキ株式会社 | Intake device for outboard engine |
| JP2016089766A (en) * | 2014-11-07 | 2016-05-23 | トヨタ紡織株式会社 | Air cleaner housing |
| JP2019078226A (en) * | 2017-10-25 | 2019-05-23 | トヨタ自動車株式会社 | Air cleaner duct mounting structure |
| WO2019142279A1 (en) * | 2018-01-17 | 2019-07-25 | 本田技研工業株式会社 | Air cleaner |
-
2019
- 2019-12-20 JP JP2019230013A patent/JP2021099038A/en active Pending
-
2020
- 2020-11-27 WO PCT/JP2020/044285 patent/WO2021124838A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62178767A (en) * | 1986-01-30 | 1987-08-05 | Yamaha Motor Co Ltd | Air cleaner |
| JP2013050059A (en) * | 2011-08-30 | 2013-03-14 | Toyota Boshoku Corp | Case of air cleaner and molding apparatus for the case |
| JP2014066242A (en) * | 2012-08-30 | 2014-04-17 | Mgi Coutier | Air filtering device in intake pipeline of internal combustion engine |
| JP2015068227A (en) * | 2013-09-27 | 2015-04-13 | スズキ株式会社 | Intake device for outboard engine |
| JP2016089766A (en) * | 2014-11-07 | 2016-05-23 | トヨタ紡織株式会社 | Air cleaner housing |
| JP2019078226A (en) * | 2017-10-25 | 2019-05-23 | トヨタ自動車株式会社 | Air cleaner duct mounting structure |
| WO2019142279A1 (en) * | 2018-01-17 | 2019-07-25 | 本田技研工業株式会社 | Air cleaner |
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