JP2020153299A - Air cleaner unit - Google Patents

Abstract

To promote space saving by a simple constitution.SOLUTION: An air cleaner unit comprises: fan parts 45 for making passing intake air generate swirl flows; cylinder parts 42 having intake introduction ports 43 separated from the fan parts 45 and opposing them at one-side end sides, and intake send-out ports 54 at the other end sides, and making intake air in which foreign matters are separated by a centrifugal force accompanied by a swirl circulate; a housing part 50 in which the cylinder parts 42 are connected to side faces 53, and which can accommodate a filtering material 57 for filtering the intake air at the inside; and an intake derivation part 58 for deriving the intake air which has passed the filtering material 57 from the housing part 50. The cylinder parts 42 are obliquely connected to the side faces 53 of the housing part 50 so that the intake introduction ports 43 are located below the intake send-out ports 54.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to an air cleaner unit, and more particularly to an air cleaner unit including a pre-cleaner.

In a cab-over type vehicle such as a truck, an intake structure is adopted in which a vertical duct extending in the vertical direction is provided on the back surface of the cab and the intake air taken in from the opening on the upper end side of the duct is guided to an air cleaner arranged on the lower end side. May occur.

As an intake structure of this type, for example, in Patent Document 1, a cyclone type pre-cleaner is provided on the upper end side of the vertical duct, and the intake air from which foreign substances such as water and dust are separated by the pre-cleaner is guided to the air cleaner on the lower end side. The structure is disclosed.

Japanese Unexamined Patent Publication No. 2002-322951

By the way, in the structure described in Patent Document 1, the pre-cleaner in the front stage and the air cleaner in the rear stage are separately installed and connected by a duct. For this reason, the entire unit becomes large, and depending on the peripheral layout, it may not be possible to mount the unit at a desired installation position due to space restrictions or the like.

An object of the present disclosure technique is to provide an air cleaner unit capable of saving space with a simple configuration.

The technique of the present disclosure has a fan portion that causes a swirling flow in the passing intake air, an intake air inlet that is separated from the fan portion and faces the other end side, and has an intake air outlet on the other end side. A tubular portion that takes in the intake air from which foreign matter has been separated by the centrifugal force accompanying the intake air from the intake air inlet and distributes the intake air toward the intake air outlet is connected to the side surface of the intake air outlet. A housing portion capable of accommodating a filter material for filtering the intake air and an intake intake outlet portion for drawing out the intake air that has passed through the filter material from the housing portion are provided in the tubular portion. It is characterized in that it is diagonally connected to the side surface of the housing portion so as to be located below the intake air outlet.

Further, the foreign matter is attached to the side surface of the housing portion, covers the tubular portion and the fan portion, and has an intake intake port that opens downward, and the foreign matter separated by centrifugal force is said. It is preferable to further provide a duct portion for dropping the air intake port to the outside.

Further, it is preferable that the tubular body portion is formed so as to be curved downward from the side surface of the housing portion.

Further, the housing portion is formed in a horizontally long shape, a plurality of the tubular portions are provided, and the plurality of tubular portions are arranged in parallel on the side surface of the housing portion in the longitudinal direction to provide the fan portion. It is preferable that a plurality of fan portions are provided and the plurality of fan portions are provided corresponding to the plurality of tubular portions.

According to the technology of the present disclosure, space can be saved with a simple configuration.

It is a schematic perspective view which shows the front structure of the vehicle which concerns on this embodiment. It is a schematic side view which looked at the front structure of the vehicle which concerns on this embodiment from the left side in the vehicle width direction. It is a schematic perspective view which shows the air cleaner unit which concerns on this embodiment. It is a schematic perspective view which shows the air cleaner unit which concerns on this embodiment by partially cut out. It is a schematic vertical sectional view which shows the air cleaner unit which concerns on this embodiment cut out in the vehicle front-rear direction.

Hereinafter, the air cleaner unit according to the present embodiment will be described with reference to the attached drawings. The same parts have the same reference numerals, and their names and functions are also the same. Therefore, detailed explanations about them will not be repeated.

FIG. 1 is a schematic perspective view showing the front structure of the vehicle 1 according to the present embodiment, and FIG. 2 is a schematic view of the front structure of the vehicle 1 according to the present embodiment as viewed from the left side in the vehicle width direction. It is a side view.

As shown in FIG. 1, the vehicle 1 is, for example, a cab-over type vehicle such as a truck, and a cab 3 (driver's cab) is mounted on the upper part of the vehicle frame 10 on the front end side. The cab 3 is tiltably supported by the vehicle frame 10 via a cab mount (not shown). A plurality of front grills 8 for introducing running wind are formed on the front surface of the cab 3.

The vehicle 10 is not limited to the cab-over type vehicle, and may be another vehicle such as a rear engine bus, an SUV (Sport Utility Vehicle), a pickup truck, or a passenger car.

The vehicle frame 10 includes a pair of left and right side members 11 and 12 facing each other at predetermined intervals in the vehicle width direction, and a plurality of cross members 15 (in the illustrated example, only the front end cross member on the front end side is shown). I have.

The pair of left and right side members 11 and 12 are formed in a substantially U-shaped cross section that opens inward in the vehicle width direction, and are extended in the vehicle front-rear direction with the opening sides facing each other. The cross member 15 is formed in a U-shaped cross section that opens to the front or rear of the vehicle (rear in the illustrated example), and is bridged between the left and right side members 11 and 12 in the vehicle width direction.

The cross-sectional shapes of the side members 11 and 12 and the cross member 15 are not limited to a substantially U shape, and may be a substantially rectangular shape.

The air cleaner unit 30 includes a pre-cleaner portion 40 on the front stage side and a housing portion 50 on the rear stage side.

A filter element (not shown) is housed inside the housing portion 50. Further, an intake lead-out portion 58 is integrally provided on the side wall of the housing portion 50 (the right wall in the illustrated example).

The intake intake lead-out unit 58 is connected to the compressor housing of a supercharger (not shown) via an intake pipe 21. That is, the intake air that has passed through the filter element in the housing portion 50 from the pre-cleaner portion 40 is supplied to the engine 20 from the intake intake outlet portion 58 via the intake pipe 21, the compressor housing, the intercooler, the intake manifold, and the like. It has become.

As shown in FIG. 2, the air cleaner unit 30 is housed in the space S between the upper end of the engine 20 and the lower surface of the cab floor 3A in the engine room so that the pre-cleaner portion 40 is on the front side with respect to the housing portion 50. Have been placed. As described above, by effectively utilizing the limited space S in the engine room as the accommodation space of the air cleaner unit 30, the layout of peripheral parts can be improved.

Hereinafter, the detailed structure of the air cleaner unit 30 according to the present embodiment will be described with reference to FIGS. 3 and 4.

[Air cleaner unit]
FIG. 3 is a schematic perspective view showing the air cleaner unit 30 according to the present embodiment. FIG. 4 is a schematic perspective view showing the air cleaner unit 30 according to the present embodiment by partially cutting out.

As shown in FIGS. 3 and 4, the housing portion 50 is formed of, for example, a synthetic resin or the like in a horizontally long rectangular box shape in the vehicle width direction, and a filter element 57 as a filter medium (FIG. 3). (Shown in 4) is housed. The housing portion 50 is preferably formed in a divided structure having a front side case portion 51 and a rear side case portion 52 so that the housing portion 50 can be separated when the filter element 57 is replaced or the like.

Specifically, the front case portion 51 is formed in a substantially container shape with the rear side open. The rear case portion 52 is formed in a substantially container shape with the front side open. The front case portion 51 and the rear case portion 52 are connected and fixed to each other by locking means (snap fit, fastener component, etc.) (not shown) in a state where the opening edges are joined to each other.

The intake lead-out portion 58 extends in the vehicle width direction from one side wall portion (right side wall portion in the illustrated example) of the side wall portions of the housing portion 50 in the vehicle width direction. The intake lead-out portion 58 is, for example, a substantially cylindrical resin pipe, and is preferably joined to the housing portion 50 by vibration welding or the like. In the illustrated example, the intake lead-out unit 58 is provided in the front case portion 51, but may be provided in the rear case portion 52.

A plurality of housing inlets 54 (see FIG. 4) provided in parallel in the vehicle width direction (longitudinal direction of the housing portion 50) are formed on the upper end side of the front side wall portion 53 of the housing portion 50. A pre-cleaner portion 40 is provided on the front side wall portion 53 of the housing portion 50.

The pre-cleaner portion 40 includes a plurality of tubular portions 42 (see FIG. 4) arranged in parallel in the vehicle width direction, and a plurality of fan portions 45 (see FIG. 4) provided corresponding to each tubular portion 42. ), A duct portion 48 that covers the tubular portion 42 and the fan portion 45, and a louver structure 60 (see FIG. 4). The number of the tubular body portion 42 and the fan portion 45 is not limited to four in each of the illustrated examples, and can be appropriately set according to the size of the housing portion 50 and the like.

The tubular body portion 42 is a substantially cylindrical resin pipe having both ends open, and is formed to be curved from the housing inlet 54 of the front side wall portion 53 toward the diagonally downward direction in front of the vehicle. That is, the upper end side opening of the tubular body portion 42 is connected to the housing inlet 54 of the front side wall portion 53, and constitutes the intake air inlet / outlet of the present disclosure. The tubular body portion 42 is preferably joined to the front side wall portion 53 of the housing portion 50 by vibration welding or the like, and is integrally provided with the housing portion 50.

The lower end of the tubular body portion 42 is located above the lower end of the front side wall portion 53. At the lower end of the tubular body portion 42, an intake air inlet 43 that opens diagonally downward is provided. That is, the intake air introduced from the intake air inlet 43 flows through the tubular body portion 42 and is sent out from the housing inlet 54 to the inside of the housing portion 50.

The duct portion 48 is formed of, for example, synthetic resin or the like, and has a front plate portion 48A forming a front surface, a pair of left side plate portions 48B (see FIG. 3) forming side surfaces, and a right plate portion 48C (FIG. 3). 4) and.

The front plate portion 48A is formed to be curved from a portion of the upper end portion of the front side wall portion 53 above the tubular body portion 42 toward the diagonally downward direction in front of the vehicle. The upper end side of the front plate portion 48A is preferably curved with substantially the same curvature as the tubular portion 42, and the lower end side of the front plate portion 48A has a flat plate shape extending linearly in the vertical direction. The lower end edge of the front plate portion 48A is located below the intake inlet 43 of the tubular portion 42.

The left side plate portion 48B and the right side plate portion 48C are formed in a substantially triangular shape having one side including an arc along the edge of the front side plate portion 48A in the vehicle width direction. The front plate portion 48A, the left plate portion 48B, and the right plate portion 48C are preferably integrally formed.

The duct portion 48 is integrated with the housing portion 50 by joining the rear end edges of the front plate portion 48A, the left plate portion 48B, and the right plate portion 48C to the front side wall portion 53 of the housing portion 50 by vibration welding or the like. It is provided in. The lower end edge of the duct portion 48 and the lower end edge of the front side wall portion 53 form a substantially rectangular intake intake port 49 (see FIG. 4) that opens downward.

The intake intake port 49 is provided with a louver structure 60 (see FIG. 4) having a plurality of blades arranged at predetermined intervals. The louver structure 60 functions to prevent splashes such as water and mud splashed up by the wheels while the vehicle is running from entering the duct portion 48.

The fan portion 45 (see FIG. 4) includes an outer peripheral ring 46 and a plurality of blades 47 arranged in the outer peripheral ring 46 at a predetermined pitch in the circumferential direction. The blade 47 is shaped so as to generate a swirling flow in the intake air by guiding the intake air passing through the outer peripheral ring 46 in the turning direction. The outer diameter of the fan portion 45 is preferably formed to be larger than the outer diameter of the tubular portion 42.

In the present embodiment, the fan portion 45 is arranged coaxially with the intake inlet 43 of the tubular body portion 42 and diagonally downward from the intake inlet 43 at a predetermined interval. Here, the predetermined interval may be set based on the distance from the intake air that swirls through the fan portion 45 so that foreign matter such as dust contained in the intake air can be separated by centrifugal force. The method of fixing the fan portion 45 is not particularly limited, and the outer peripheral ring 46 is attached to the rear surface of the front plate portion 48A or the front surface of the front side wall portion 53 by a locking means (snap fit, fastener component, etc.) (not shown). It may be fixed.

Hereinafter, the operation of the air cleaner unit 30 according to the present embodiment will be described with reference to FIG.

FIG. 5 is a schematic vertical sectional view showing the air cleaner unit 30 according to the present embodiment cut out in the front-rear direction of the vehicle. In the figure, arrows A to D indicate the flow direction of the intake air, and reference numeral G indicates a foreign substance such as water or dust centrifuged from the intake air B.

As shown in FIG. 5, the intake air A (for example, intake air containing water, dust, etc.) taken into the duct portion 48 from the intake intake port 49 formed at the lower end of the duct portion 48 is inside the duct portion 48. Flows upward and reaches the fan portion 45.

The intake air that has reached the fan section 45 is guided in the turning direction by passing through the fan section 45. That is, a swirling flow is formed in the intake air B flowing from the fan portion 45 toward the intake intake port 43 of the tubular body portion 42.

Here, the intake inlet 43 separated from the fan portion 45 is formed to have a smaller diameter than the fan portion 45. That is, foreign matter G such as water and dust contained in the intake air B is separated by centrifugal force and flowed to the outer peripheral side of the tubular body portion 42, and the intake air C from which these foreign matter G is removed is the cylinder body from the intake intake port 43. It will be introduced in the section 42.

The intake air D circulated in the tubular body portion 42 is sent out from the housing inlet 54 into the inside of the housing portion 50 and passes through the filter element 57. The intake D passing through the filter element 57 is supplied to the engine 20 (see FIGS. 1 and 2) after the filter element 57 removes even fine dust having a small particle size.

That is, foreign matter is efficiently removed from the intake air in two stages of centrifugation by the swirling flow of the pre-cleaner portion 40 and filtration by the filter element 57 of the housing portion 50, and a clean intake air is supplied to the engine 20. It is configured so that it can be done.

The foreign matter D separated from the intake air B by the pre-cleaner portion 40 adheres to the inner peripheral surface of the duct portion 48 and the front surface of the front side wall portion 53, and then falls when it dries or the like to the outside from the intake intake port 49. It is discharged. In the present embodiment, since the intake intake port 49 of the duct portion 48 opens downward, foreign matter D falling from the inner peripheral surface of the duct portion 48 or the front surface of the front side wall portion 53 is collected in the duct portion 48. It is surely discharged to the outside from the intake intake port 49 without being damaged. As a result, the frequency of maintenance such as cleaning of the pre-cleaner portion 40 can be effectively reduced.

According to the air cleaner unit 30 of the present embodiment described in detail above, the pre-cleaner portion 40 that causes a swirling flow in the intake air to centrifuge the foreign matter is provided integrally with the housing portion 50 that houses the filter element 57. .. As a result, the overall size of the unit can be reduced compared to the conventional structure in which the pre-cleaner part and the housing part are provided separately and connected by a duct, and the intake cleaning efficiency is improved with a simple configuration. Makes it possible to realize space saving.

Further, by connecting the tubular body portion 42 of the pre-cleaner portion 40 diagonally to the front side wall portion 53 of the housing portion 50, the vehicle of the pre-cleaner portion 40 is compared with the structure in which the tubular body portion is connected in a substantially horizontal direction. The length in the front-back direction will be shortened. This makes it possible to reliably improve the mountability of the air cleaner unit 30 even in an engine room where space is limited.

Further, by opening the intake intake port 49 of the duct portion 48 downward, foreign matter centrifugally separated from the intake air can be efficiently discharged from the intake intake port 49 without being accumulated in the duct portion 48. It is possible to effectively reduce the frequency of maintenance such as cleaning.

Further, by providing the pre-cleaner portion 40 with a plurality of tubular portions 42 and fan portions 45 in parallel in the horizontal direction, a centrifugal separation capacity equivalent to these is configured by one large tubular portion and one fan portion. The height of the pre-cleaner portion 40 in the vertical direction of the vehicle can be effectively suppressed as compared with the case where the pre-cleaner portion 40 is used.

[Other]
It should be noted that the present disclosure is not limited to the above-described embodiment, and can be appropriately modified and implemented without departing from the gist of the present disclosure.

For example, in the above embodiment, the air cleaner unit 30 has been described as being arranged above the engine 20, but the air cleaner unit 30 is located outside the side members 11 and 12 in the vehicle width direction depending on the layout of the vehicle 1. It may be arranged and configured in. In this case, the air cleaner unit 30 may be arranged in the front-rear direction of the vehicle so that the pre-cleaner portion 40 is on the outside in the vehicle width direction and the housing portion 50 is on the inside in the vehicle width direction. Further, the air cleaner unit 30 may be arranged above or below a radiator (not shown) provided in front of the engine 20, or may be provided behind the engine 20.

Further, although the intake lead-out portion 58 has been described as being provided on the right side wall portion of the housing portion 50, the upper side wall portion, the lower side wall portion, the rear side wall portion, and the like of the housing portion 50 are around where the air cleaner unit 30 is mounted. It may be provided as appropriate according to the layout.

Further, the application of the present disclosure is not limited to the air cleaner for the engine 20 mounted on the vehicle 1, and can be widely applied to an engine mounted on an industrial machine other than the vehicle, such as an engine of a generator. ..

1 Vehicle 3 Cab 10 Vehicle frame 11 Left side member 12 Right side member 15 Cross member 20 Engine 30 Air cleaner unit 40 Pre-cleaner part 42 Cylinder part 43 Intake inlet 45 Fan part 46 Outer ring 47 Blade 48 Duct part 49 Intake intake Mouth 50 Housing part 53 Front side wall part (side surface)
54 Housing inlet (intake outlet)
57 Filter element (filter material)
58 Intake lead unit

Claims (4)

A fan part that creates a swirling flow in the passing intake air,
An intake air inlet that is separated from the fan portion and faces the fan portion is provided on one end side, and an intake air inlet is provided on the other end side, and intake air from which foreign matter is separated by centrifugal force accompanying turning is taken in from the intake air inlet. A tubular body that circulates toward the intake air outlet and
A housing portion that is connected to the intake outlet of the tubular portion on the side surface and can accommodate a filter material that filters the intake air inside.
It is provided with an intake lead-out portion for drawing out intake air that has passed through the filter material from the housing portion.
The air cleaner unit is characterized in that the tubular body portion is obliquely connected to the side surface of the housing portion so that the intake air inlet is located below the intake air outlet. It is attached to the side surface of the housing portion, covers the tubular portion and the fan portion, and has an intake intake port that opens downward, and takes the foreign matter separated by centrifugal force. The air cleaner unit according to claim 1, further comprising a duct portion for dropping the air cleaner unit from the inlet to the outside. The air cleaner unit according to claim 1 or 2, wherein the tubular body portion is formed so as to be curved downward from the side surface of the housing portion. The housing portion is formed horizontally, and the housing portion is formed horizontally.
A plurality of the tubular portions are provided, and the plurality of tubular portions are arranged in parallel in the longitudinal direction on the side surface of the housing portion.
The air cleaner unit according to any one of claims 1 to 3, further comprising a plurality of the fan portions, and the plurality of fan portions are provided corresponding to the plurality of tubular portions.

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