CN215370072U - High-efficiency low-resistance air filter with optimized flow field - Google Patents
High-efficiency low-resistance air filter with optimized flow field Download PDFInfo
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- CN215370072U CN215370072U CN202120638142.6U CN202120638142U CN215370072U CN 215370072 U CN215370072 U CN 215370072U CN 202120638142 U CN202120638142 U CN 202120638142U CN 215370072 U CN215370072 U CN 215370072U
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Abstract
The utility model discloses a high-efficiency low-resistance air filter with an optimized flow field. The filter includes: the air filter comprises an air outlet, an air filter element, an air filter shell, a dust extraction device, a prefilter, a flow guide cone, a filter cover plate, a filter element supporting and pressing mechanism and a filter fixing angle. The air filter element is in a circular truncated cone shape or a shape similar to the circular truncated cone, the flow guide cone is in a cone structure, and the flow guide cone is coaxial with the air filter element to form a cone. The high-efficiency low-resistance air filter solves the problem that the air filter cannot meet the air inlet requirement of a vehicle engine under the condition of limited space constraint of a heavy vehicle air inlet system, and is particularly high in system resistance and short in maintenance time. The utility model discloses an air cleaner uses guiding device and round platform type filter core, has effectively reduced system resistance and extension maintenance time, simple structure, convenient assembling.
Description
Technical Field
The utility model relates to the technical field of engine intake filtration, in particular to a high-efficiency low-resistance air filter with an optimized flow field.
Background
During the use of heavy vehicles in special environments such as plateaus and deserts, the air filter device for the intake air of the engine plays an important role, and the air filter device has the function of protecting high-speed rotating parts, precision sliding parts and sealing parts in the engine from the influence of sand and dust impurities in the intake air.
The air filter is used as a key component of an air filtering device and is a key functional component for blocking and separating sand and dust impurities in air, the air filter of the heavy-duty vehicle at the present stage generally adopts a composite structure form, namely a two-stage separation and interception filtration form of a prefilter and a fine filter, most of composite air filters on the market at the present stage simply mechanically combine a prefilter with inertia separation property and a fine filter with interception filtration property together, the measures adopted on the system resistance planning and optimizing means are less, so that the system resistance of the composite air filter is always maintained at a higher stage, the system resistance of the air filter determines the service life of the air filter and the power consumption of an engine, the initial resistance of the air filter is reduced by adopting effective means, and the method is an important way for improving the overall performance of the air filter. Meanwhile, the reduction of the system resistance can also prolong the resistance span of the service life of the air filter, and the service life and the reliability of the system are improved from the aspect of resistance gradient.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a high-efficiency low-resistance air filter with an optimized flow field, which solves the problem of overhigh resistance in the use process of the air filter of a special heavy vehicle, effectively reduces the resistance of a filtering system, prolongs the maintenance time, has more high efficiency in the filtering process, and is simple in structure and convenient to assemble.
A flow field optimized high efficiency low resistance air cleaner comprising: the air filter comprises an air outlet, an air filter element, an air filter shell, a dust extraction device, a prefilter and a flow guide cone;
an air outlet of the air filter is fixed on the air filter shell and is communicated with an inner cavity of the air filter element, and the air filter element is contacted with the air filter shell through a compression sealing ring to form sealing; the prefilter adopts a straight-through or reverse cyclone cylinder and is fixed outside the front-end air inlet opening of the air filter shell;
the air filter element is in a circular truncated cone shape or a similar cone shape, and the flow guide cone is in a cone structure and is arranged between the air filter element and the prefilter; the dust extraction device is connected with the prefilter through a pipeline.
The air filter also comprises a filter upper cover plate and a filter element supporting and pressing mechanism, the filter upper cover plate and the air filter shell form a sealed cavity, and the filter element supporting and pressing mechanism is installed on the air filter shell and located at the rear end of the air filter element.
The air filter shell is also provided with a filter fixing angle; radial sealing or axial sealing is adopted between the air filter element and the air filter shell; the proportional relation between the air extraction flow of the dust extraction device and the total air inlet flow of the pre-filter is 5-30%.
Has the advantages that:
(1) the utility model provides a high-efficiency low-resistance air filter with an optimized flow field, which solves the problem of overhigh resistance in the use process of the air filter of a special heavy vehicle by applying a flow guide device and a circular truncated cone-shaped filter element, effectively reduces the system resistance and prolongs the maintenance time.
(2) The air filter has the advantages that the arrangement of the prefilter and each filter component is arranged, so that the filtering process is more efficient, the structure is simple, and the assembly is convenient.
Drawings
FIG. 1 is a schematic view of an air cleaner according to the present invention.
Fig. 2 is an outline view of a guide cone.
The air filter comprises an air filter air outlet 1, an air filter element 2, an air filter shell 3, a dust extraction device 4, a prefilter 5, a flow guide cone 6, a filter upper cover plate 7, a filter element supporting and pressing mechanism 8 and a filter fixing angle 9.
Detailed Description
The utility model is described in detail below by way of example with reference to the accompanying drawings.
The utility model provides a high-efficiency low-resistance air filter with an optimized flow field, as shown in figure 1, the air filter comprises: the air filter comprises an air filter air outlet 1, an air filter element 2, an air filter shell 3, a dust extraction device 4, a prefilter 5, a flow guide cone 6, a filter cover plate 7, a filter element supporting and pressing mechanism 8 and a filter fixing angle 9.
As shown in fig. 1(a), an air outlet 1 of the air filter is fixed on an air filter shell 3 and is communicated with an inner cavity of an air filter element 2, and the air filter element 2 is contacted with the air filter shell 3 through a compression sealing ring to form sealing; as shown in fig. 1(c), the air filter housing 3 further has a filter fixing angle 9 for fixing the air filter.
As shown in fig. 1(a), the prefilter 5 is fixed outside the front end air inlet opening of the air filter housing 3 and is used as a first layer of filtering of the air entering the air filter, and the prefilter 5 adopts a straight-through or reverse cyclone cylinder and applies an inertia separation principle to separate large-particle dust in the air containing dust entering the air filter;
as shown in fig. 1(b), the dust suction device 4 is connected to the prefilter 5 through a pipe, and discharges the dust separated by the prefilter 5 out of the prefilter case;
the cleaner air filtered by the prefilter 5 enters an air filter element 2 arranged in an air filter shell 3, and is filtered again by the air filter element 2, and the filtered clean air flows out from an air outlet 1 of the air filter and enters an engine supercharger to be supplied to an engine for combustion.
As shown in fig. 1(b), the prefilter 5 is connected to the dust extraction device 4, and the extraction flow rate of the dust extraction device 4 is 5% to 30% in a certain proportional relationship with the total intake air flow rate of the prefilter 5.
The air filter element 2 is in a circular truncated cone shape or a shape similar to a circular truncated cone, so that the blocking area of the surface of the air filter element 2 after the air flow flows out of the prefilter 5 is reduced, the flow field is optimized, and the system resistance is reduced.
As shown in fig. 1(c), a cone structure, namely a diversion cone 6, is arranged in a space between the air filter element 2 and the prefilter 5, the cone tip direction of the diversion cone 6 points to the inflow direction of the prefilter 5, the cone bottom is attached to the small round end of the circular truncated cone-shaped air filter element 2 and is coaxial with the circular truncated cone-shaped filter element, the diversion cone 6 and the air filter element 2 form a cone, fluid flows in from the cone tip of the cone and flows out from the bottom of the cone, and the purpose of reducing gas resistance is achieved. The angle of the flow guide cone is 10-179 degrees. The guide cone 6 has the shape shown in fig. 2.
The air filter is used for filtering dust and impurities contained in air entering the power equipment so as to reduce abnormal abrasion of the cylinder, the piston and the piston ring, prolong the service life of the power equipment and provide clean air for the power equipment.
The air filter comprises three processes of air inlet, filtering and air outlet, wherein the air inlet process is realized by matching an air inlet of an air filter shell 3 with a prefilter 5 and a dust extraction device 4; in the filtering process, the prefilter 5 realizes coarse filtration, and the air filter element 2 realizes fine filtration; the air outlet process is realized by matching an air outlet of an inner cavity of the air filter element 2 with an air outlet 1 of the air filter; the air filter element 2 is made of filter paper or non-woven fabric, and the high-efficiency filter paper is adopted, so that the filtering efficiency of the air filter is more than or equal to 99.7 percent.
Radial sealing or axial sealing is adopted between the air filter element 2 and the air filter shell 3, a filter element supporting and pressing mechanism 8 designed based on a swing rod principle is adopted at the rear end, as shown in fig. 1(c), the filter element supporting and pressing mechanism 8 is installed on the air filter shell 3, under the condition of rotary driving, the filter element supports the self-adaptive laminating filter element bottom of a roller support frame of the pressing mechanism 8, and the support and release of the filter element are realized by utilizing the length change of the support frame in the horizontal plane projection direction.
According to the air filter, except the joint of the prefilter 5, the air filter shell 3 is sealed by the cover plate and the rubber sealing ring, namely, air flow only can enter from the air inlet of the prefilter 5. The air outlet 1 of the air filter is connected with the air inlet of the engine supercharger through a rubber tube or the combination of the rubber tube and a steel tube. The value of the pressure drop measured at the air cleaner air outlet 1 is 3kPa or less.
The air filter disclosed by the utility model is low in initial air inlet resistance (resistance data of air outlet pipeline measuring points is less than or equal to 2kPa), high in initial efficiency (more than or equal to 99.5%), long in service life and capable of reaching more than or equal to 15 hours under the condition of dust concentration of 2g/m 3.
The high-efficiency low-resistance air filter provided by the embodiment of the utility model is a high-efficiency low-resistance air filter system which is realized through flow field optimization theoretical calculation and engineering. The low resistance is through global optimization filter air current, realizes from the low resistance treatment that flows in to effluence, especially the use of devices such as round platform type filter core and water conservancy diversion awl, makes the air current evenly permeate through air filter surface, effectively avoids solving vortex, vortex problem, and the high efficiency is that the doublestage filtration form that constitutes through prefilter and filter core comes preliminary realization, and the high accuracy of efficiency is guaranteed through the high-efficient filtering material that constitutes the filter core. The air filter has the main functions of filtering dust and impurities contained in air entering power equipment so as to reduce abnormal abrasion of the cylinder, the piston and the piston ring, prolong the service life of the power equipment and provide clean air for the power equipment.
Specifically, the high-efficiency low-resistance air filter provided by the embodiment of the utility model is a straight-flow air filter, air enters a filter cavity from a prefilter, airflow does not turn or shrink, the airflow is diffused by a flow guide cone and enters an air filter element, the initial section of a pipeline at an air outlet of the filter is close to the diameter of an outlet of the air filter element and is in butt joint with the outlet of the air filter element, the filtered clean airflow directly enters the outlet of the filter element from the outlet of the filter element, the middle airflow does not expand or shrink, and the processes are implemented to ensure that the airflow does not generate pressure drop change when running in the air filter, namely, additional resistance is not generated.
As shown in fig. 1(a), an air outlet 1 of the air filter is fixed on an air filter shell 3, one end of the air outlet is inserted into an inner cavity of an air filter element 2, a certain matching relation is required to be formed between the outer diameter of the air inlet 1 and the inner diameter of the inner cavity of the air filter element 2, sealing and inserting of the filter element into the air outlet 1 are ensured, the air filter is free of a gas collection box, and the air filter element 2 is in contact with the air filter shell 3 and the air outlet 1 in an axial or radial mode through a compression sealing ring to form sealing. The filter upper cover plate 7 and the air filter shell 3 form a sealed cavity through a flange sealing surface and a rubber pad, the air flow can only enter the filter cavity through the prefilter 5 by virtue of the sealing structure, the inflow side of the air filter element 2 is also connected with the flow guide cone 6 in series, and finally a 'one-dragon' air flow path of 'air flow inlet-prefilter-flow guide cone-air filter element-filter air outlet' is formed.
As shown in fig. 1(a), the prefilter 5 is fixed at the front end of the air filter housing 3, the air filter housing 3 is provided with an air inlet opening according to the cross-sectional dimension of the prefilter 5, the prefilter 5 is fixedly connected with the air filter housing 3 through fixing pins and used as a first layer of filtering of air entering the air filter, and the prefilter 5 adopts a straight-through or reverse-rotation cyclone cylinder and applies the inertial separation principle to separate large particles of dust in the air containing dust entering the air filter. The dust extraction device 4 is connected to the prefilter 5 via a pipeline, and discharges the dust separated by the prefilter 5 out of the prefilter casing. The cleaner air filtered by the prefilter 5 enters the inner cavity of the air filter shell 3, passes through the air filter element 2 from outside to inside, is filtered again by the air filter element 2, is generally called fine filtration, and the cleaned air after fine filtration flows out through the air outlet 1 of the air filter and enters the supercharger of the engine to be supplied to the engine for combustion.
The air filter element 2 and the air filter shell 3 are sealed in a radial direction or an axial direction, and the rear end of the air filter element is provided with a filter element supporting and pressing mechanism 8 designed based on the swing rod principle; the filter element supporting and pressing mechanism 8 is installed on the air filter shell 3, and under the condition of rotary driving, the filter element supporting and pressing mechanism 8 is self-adaptive to the bottom of the attached filter element of the roller support frame, and the support and the release of the filter element are realized by utilizing the length change of the support frame in the horizontal plane projection direction.
In the space between the air filter element 2 and the prefilter 5, namely on the filter element supporting and pressing mechanism 8, a cone structure-a diversion cone 6 is arranged, as shown in fig. 1(c), the cone tip direction of the diversion cone 6 points to the inflow direction of the prefilter 5, the cone bottom is attached to the small round end of the circular truncated cone-shaped air filter element 2 and is coaxial with the circular truncated cone-shaped filter element, the diversion cone 5 and the air filter element 2 form a cone, fluid flows in from the cone tip of the cone and flows out from the bottom of the cone, and the purpose of reducing gas resistance is achieved. The guide cone 6 has the shape shown in fig. 2.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and the shapes and names of the components in the description may be different and are not limited. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An efficient low-resistance air filter with an optimized flow field is characterized by comprising: the air filter comprises an air filter air outlet (1), an air filter element (2), an air filter shell (3), a dust extraction device (4), a prefilter (5) and a diversion cone (6);
the air filter air outlet (1) is fixed on the air filter shell (3) and is communicated with the inner cavity of the air filter element (2), and the air filter element (2) is in contact with the air filter shell (3) through a compression sealing ring to form sealing; the prefilter (5) adopts a straight-through or reverse cyclone cylinder and is fixed outside the front-end air inlet opening of the air filter shell (3);
the air filter element (2) is in a circular truncated cone shape or a shape similar to a circular truncated cone, and the diversion cone (6) is in a cone structure and is arranged between the air filter element (2) and the prefilter (5); the dust extraction device (4) is connected with the prefilter (5) through a pipeline.
2. The air cleaner according to claim 1, further comprising a filter upper cover plate (7) and a filter element supporting and pressing mechanism (8), wherein the filter upper cover plate (7) and the air filter casing (3) form a sealed cavity, and the filter element supporting and pressing mechanism (8) is installed on the air filter casing (3) and is positioned at the rear end of the air filter element (2).
3. An air cleaner according to claim 1, wherein the air filter housing (3) is further provided with a filter fixing angle (9).
4. An air cleaner according to claim 1, wherein a radial seal or an axial seal is provided between the air filter element (2) and the air filter housing (3).
5. An air cleaner according to claim 1, wherein the ratio of the extraction air flow of the dust extraction device (4) to the total intake air flow of the pre-filter (5) is 5% to 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120638142.6U CN215370072U (en) | 2021-03-30 | 2021-03-30 | High-efficiency low-resistance air filter with optimized flow field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120638142.6U CN215370072U (en) | 2021-03-30 | 2021-03-30 | High-efficiency low-resistance air filter with optimized flow field |
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| Publication Number | Publication Date |
|---|---|
| CN215370072U true CN215370072U (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120638142.6U Active CN215370072U (en) | 2021-03-30 | 2021-03-30 | High-efficiency low-resistance air filter with optimized flow field |
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| Country | Link |
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| CN (1) | CN215370072U (en) |
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2021
- 2021-03-30 CN CN202120638142.6U patent/CN215370072U/en active Active
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