WO2021124838A1 - Dispositif d'admission d'air - Google Patents

Dispositif d'admission d'air Download PDF

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Publication number
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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WO
WIPO (PCT)
Prior art keywords
wall
facing
peripheral
inlet
peripheral wall
Prior art date
Application number
PCT/JP2020/044285
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English (en)
Japanese (ja)
Inventor
邦峰 前田
Original Assignee
トヨタ紡織株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by トヨタ紡織株式会社 filed Critical トヨタ紡織株式会社
Publication of WO2021124838A1 publication Critical patent/WO2021124838A1/fr

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Classifications

    • 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.

Landscapes

  • 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

L'invention concerne un dispositif d'admission d'air comprenant un boîtier et un élément filtre de type panneau. Le boîtier est doté d'une entrée et d'une sortie. L'élément filtre est conçu de façon à diviser l'intérieur du boîtier en une chambre à poussière comprenant l'entrée et en une chambre propre comprenant la sortie, et de façon à filtrer l'air d'admission. Le boîtier comporte une paroi périphérique circonscrivant une surface périphérique d'une section de filtration de l'élément filtre et une paroi opposée qui est opposée à une surface principale de la section de filtration, lesdites parois formant la chambre à poussière. La paroi périphérique comprend une première section de paroi et une seconde section de paroi du côté opposé de la première section de paroi. L'entrée débouche dans la première section de paroi. La paroi opposée est inclinée de sorte que la distance par rapport à la surface principale de la section de filtration augmente du côté première section de paroi en direction du côté seconde section de paroi.
PCT/JP2020/044285 2019-12-20 2020-11-27 Dispositif d'admission d'air WO2021124838A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019230013A JP2021099038A (ja) 2019-12-20 2019-12-20 吸気装置
JP2019-230013 2019-12-20

Publications (1)

Publication Number Publication Date
WO2021124838A1 true WO2021124838A1 (fr) 2021-06-24

Family

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Application Number Title Priority Date Filing Date
PCT/JP2020/044285 WO2021124838A1 (fr) 2019-12-20 2020-11-27 Dispositif d'admission d'air

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JP (1) JP2021099038A (fr)
WO (1) WO2021124838A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62178767A (ja) * 1986-01-30 1987-08-05 Yamaha Motor Co Ltd スクータの吸気装置
JP2013050059A (ja) * 2011-08-30 2013-03-14 Toyota Boshoku Corp エアクリーナのケース及びそのケースの成形装置
JP2014066242A (ja) * 2012-08-30 2014-04-17 Mgi Coutier 内燃機関の吸気管路中における空気濾過装置
JP2015068227A (ja) * 2013-09-27 2015-04-13 スズキ株式会社 船外機用エンジンの吸気装置
JP2016089766A (ja) * 2014-11-07 2016-05-23 トヨタ紡織株式会社 エアクリーナハウジング
JP2019078226A (ja) * 2017-10-25 2019-05-23 トヨタ自動車株式会社 エアクリーナダクト搭載構造
WO2019142279A1 (fr) * 2018-01-17 2019-07-25 本田技研工業株式会社 Purificateur d'air

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62178767A (ja) * 1986-01-30 1987-08-05 Yamaha Motor Co Ltd スクータの吸気装置
JP2013050059A (ja) * 2011-08-30 2013-03-14 Toyota Boshoku Corp エアクリーナのケース及びそのケースの成形装置
JP2014066242A (ja) * 2012-08-30 2014-04-17 Mgi Coutier 内燃機関の吸気管路中における空気濾過装置
JP2015068227A (ja) * 2013-09-27 2015-04-13 スズキ株式会社 船外機用エンジンの吸気装置
JP2016089766A (ja) * 2014-11-07 2016-05-23 トヨタ紡織株式会社 エアクリーナハウジング
JP2019078226A (ja) * 2017-10-25 2019-05-23 トヨタ自動車株式会社 エアクリーナダクト搭載構造
WO2019142279A1 (fr) * 2018-01-17 2019-07-25 本田技研工業株式会社 Purificateur d'air

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