DE7902819U1 - INTAKE AIR CLEANING ELEMENT FOR COMBUSTION ENGINES - Google Patents

Description

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The innovation relates to an intake air cleaning element for internal combustion engines.

In the case of internal combustion engines, there is a need to clean the air that is drawn in to prevent damage of the motors. Air filters are usually used for this purpose. To the burden reduce this air filter, especially in trucks that z. B. on construction sites or are exposed to a particularly high amount of dust when transporting dusty goods, e.g. pre-cleaning the Air cyclones used. However, these previously used means can carry raindrops Not prevented in the intake air flow. Therefore be The nipple openings are placed in such a way that they are not Lying in the wind. However, on the one hand, this does not achieve the desired success satisfactorily, and on the other hand, this solution disadvantageously leads to restrictions in the construction and design of Trucks.

It is the task of the innovation to avoid these disadvantages of the prior art and an intake air cleaning element for internal combustion engines to create effective filtering with simple means

the intake air and a separation of raindrops in the intake air flow. The intake air cleaning element should be compact
Design allow use in different trucks.

This object is achieved according to the invention in that the intake air cleaning element as an external,
attachable to the structure of a truck
Element is designed and a pre-filter and water separator, operationally downstream and below that a cyclone and operationally downstream
and below it contains an air filter.

The pre-filter and water separator advantageously consist of an angle profile penetrating through an opening, those in a first row with tips pointing outwards and in a second row offset and in opposite direction are arranged.

A particularly effective pre-filtering and water separation result from V-shaped angle profiles.

An advantageous design of the intake air cleaning

element results from the fact that the Ar.saugflache of the prefilter and water separator one side forms a housing that has a circular opening to the Has transition to the cyclone.

In order to achieve a high air speed and thus a particularly effective dust separation in the cyclone, the suction surface of the prefilter and water separator is advantageously several times larger, but at least twice as large, as the flow cross-section at the point of transition to the cyclone.

Favorable flow conditions are achieved in that the housing has an inclined rear wall having.

Advantageous attachment options resulted through a pipe with the housing attached, whereby d.i. ·; -i -. / yrlongc de: Height of the driver's cab a · -:.; Trucks s corresponds.

The änsa ^; '.'i i'icl · ·· de: j prefilter and Wa:; n ^ rabs: .. aiders can be arranged laterally in relation to the truck. They also came in the direction of travel

Truck or be arranged opposite to this.

A direct impact of rain or snow on the suction surface of the pre-filter and water separator to avoid, this is advantageously arranged inclined.

The opening penetrated by the angle profiles can
be flat and rectangular. You can also change the shape
of a cylinder or a part of such, wherein the angle profiles are arranged on the circumference of the cylinder parallel to its axis.

Another embodiment of the innovation is thereby

characterized in that the opening has an annular surface

represents and the angle profiles parallel to a

Vi-ui jente to the circular ring line or run radially.

D ₁ j separated water is advantageously provided by a collector common to all angles
ai / jen derived.

In the following, exemplary embodiments of the innovation are explained in more detail with reference to the drawing. Show it:

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FIG. 1 shows a section through an intake air cleaning element according to the invention,

FIG. 2 shows a partially cut-away front view of another embodiment, in the case of two intake air cleaning elements according to the invention side by side to form one Unit are connected,

Figure 3 is a side view of the unit according to Figure 2,

Figure 4 is a side view of a further embodiment of the intake air cleaning element with an inclined suction surface arranged in the direction of travel of the truck and

Figure 5 to 8 different embodiments of the Suction surface of the pre-filter and water separator, wherein the figures labeled a are a plan view and those labeled b are a section perpendicular to show the angle profiles.

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The intake air cleaning element according to the innovation is designed as an outer element that can be attached to the structure of a truck 10 and contains essentially a pre-filter and water separator 1, operationally downstream and below a cyclone 2 and operationally downstream and below an air filter 3.

The prefilter and water separator 1 consists of angled profiles 4 which penetrate an opening and which are arranged in two rows. In the first row, the tips of the angle profiles 4 point outwards. In the second row, similar angle profiles are offset from the first row and arranged in the opposite direction. ^{As shown in FIGS.} 5 to 8, the opening forming the suction surface can be rectangular or cylindrical or represent a circular ring surface. The flow of air is partially indicated in the figures by arrows. Raindrops hitting the angle profiles are deposited and run down them to a collecting channel 5 from which the water is led to the outside. In addition to the water separation, a coarse filtering of the air is achieved, since larger solids carried by the air from the

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Angle profiles are retained. The Ansaugiiache of Vcrfilters ind water separator 1 1. ildei Gins side of a housing 6 ci ~ 3 a circular! Unde opening 7 on the transition we to uem cyclone 2 au ^"r Olst. By. Ine inclined? Ickwand 8 ien xn this RE-rich favorable Strömungsvorhältnisse reached .

Because the suction surface of the prefilter and Water separator 1 is several times larger than the flow cross section at the transition point to cyclone 2, the sucked in air enters cyclone 2 at high speed. By Air baffles 11 create a rotational flow in these. The ESC particles still misled by the air migrate under the influence of the centrifugal forces acting on them to outside of the wall and, as a result of gravity and a secondary flow, get down into a dust collector 12, from which they can be removed through a dust discharge valve 13 if necessary.

The air pre-cleaned in this way flows on to the air filter 3, which z. B. made of star-shaped folded paper can exist, and is finally cleaned here.

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The cleaned one leaves through an air discharge pipe 14 Air is the element suitable for the renewal and reaches the internal combustion engine.

In the embodiments shown in FIGS the innovation of the cyclone 2 and the air filter 3 are arranged in a tube 9, the Length corresponds to the height of the cab of a truck. In these embodiments protrudes So the housing 6 with the pre-filter and water separator 1 on the driver's cab of the truck out.

With the new air intake cleaning element a surprisingly good cleaning of the intake air and an effective separation is achieved with simple means reached by raindrops. Thanks to its compact design, it can be used to set up various types of trucks be attached. The flowing through

Air is from the renewal according to the intake air purification |

only a slight resistance to the movement element: puts. Be surprising to the skilled person in spite of this

the high air speed in the intake air flow |

with regard to coarse filtering and separation *

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from raindrops through the pre-filter and water separator will achieve excellent results. We can therefore speak of an excellent solution to the problems at hand.

Claims (14)

Protection claims: 1. Intake air cleaning element for internal combustion engines, characterized in that it is designed as an outer element that can be attached to the structure of a truck and has a pre-filter and water separator (1), operationally nachgescha. ¹ tet and including a cyclone (2) and operational downstream and including an air filter (3) contains. 2. intake air cleaning element according to claim 1, characterized characterized in that the pre-filter and water separator (1) from an opening penetrating angle profiles (4) consists of a first row with tips pointing outwards and a second row are offset and arranged in the opposite direction. 3. intake air cleaning element according to claim 2, characterized characterized in that the angle profiles (4) are V-shaped. 4. Intake air cleaning element according to Ansipruch 1 to 3, characterized in that the suction surface of the Pre-filter and water separator (1) forms one side of a housing (6) which has a circular opening (7) to the transition to the cyclone (2). 5. intake air cleaning element according to claim 4, characterized characterized in that the suction area of the pre-filter and water separator (1) is several times larger, but at least twice as large as the flow cross-section at the point of transition to the Cyclone (2). 6. intake air cleaning element according to claim 4 or 5, characterized in that the housing (6) has a sloping rear wall (8). 7. intake air cleaning element according to claim 1 to 6, characterized by a tube (9) with c ufetztem housing (5), wherein the raw -ϊ ".q _e corresponds to the Hone of the driver's cab of a truck. 8. intake air cleaning element according to claim /, characterized characterized in that the suction surface of the pre-film; and water separator (Ή is arranged laterally in relation to the truck. 9. intake air cleaning element according to claim 7, dadurc ye Indicates that dj 'view area of the prefix ui.ν ». TJOOCj. aucuiit ιι.ι; ι .3 \ ι / XU 17 el. l J. Li. J.U1I L.Uliy U <dfc Ij i.e. V motor vehicle or opposite to this tn <jeordneu st. 10. intake air cleaning element according to claim 7 to 9, characterized in that the Ansaugfläc.ie des Pre-filter and water separator (1) goneicL arge is arranged. 11. intake air cleaning element according to claim 2 to 10, characterized in that the opening is flat and rectangular is ~. 12. Ansaugluf treinigungseleiT.ent according to claim 2 to 10, characterized in that the opening the shape a cylinder or part of such and that the angle profiles (4) on the circumference of the Cylinder are arranged parallel to its axis. 13. intake air cleaning element according to claim 2 to 10, characterized in that the opening represents an annular surface and the angle profiles (4) parallel r, u of a tangent to the circular ring surface or run radially. 14. Intake air purification ^ element according to / claim 2 to 13, characterized by one for all angle profiles (4) common collector (5) for discharging the separated water to the outside.