CN110939536A - Air filter of engine - Google Patents
Air filter of engine Download PDFInfo
- Publication number
- CN110939536A CN110939536A CN201911343903.9A CN201911343903A CN110939536A CN 110939536 A CN110939536 A CN 110939536A CN 201911343903 A CN201911343903 A CN 201911343903A CN 110939536 A CN110939536 A CN 110939536A
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- CN
- China
- Prior art keywords
- resonant cavity
- air
- air filter
- filter
- engine
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000000428 dust Substances 0.000 claims abstract description 10
- 239000002912 waste gas Substances 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 17
- 238000005507 spraying Methods 0.000 claims description 16
- 238000011084 recovery Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000003795 desorption Methods 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- F02M35/14—Combined air cleaners and silencers
-
- 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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
-
- 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
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
-
- 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
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
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
The invention discloses an engine air filter which comprises an air filter shell (2) with an air filter cover (1), wherein a filter element assembly (3) is arranged in the air filter shell (2), an air inlet (4) is formed in the air filter shell (2), a resonant cavity (5) is arranged on the upper end face of the air filter shell (2), the resonant cavity (5) is communicated with the air filter shell (2) through a connecting pipe (6), and an air outlet (7) is formed in the resonant cavity (5). The invention has the advantages of ingenious structural design, reliable use and low cost, can reduce air resistance and air inlet noise and vibration, has good separation effect, is convenient and simple to remove dust, and also has the advantages of convenient assembly and disassembly and long service life.
Description
Technical Field
The invention relates to an air filter, in particular to an engine air filter.
Background
At present, an air filter is an important part for air intake of an engine, and the air filter mainly plays a role in filtering dust and impurities in air and supplying cleaner air to the engine for combustion. However, as the environmental noise requirements impact, not only the engine noise must be controlled, but also the air filter noise must be controlled. The existing air filter is limited by the structure, so that the air filter has high air inlet noise and air outlet noise and certain vibration noise. To address this problem, many manufacturers add resonant cavities inside or outside the air filter for noise and vibration control.
The utility model discloses a utility model patent of "an automobile plastics air cleaner" is disclosed in CN202832874U, it includes empty filter casing, empty filter core and places the chamber, empty filter core, air cleaner end cover, air inlet, gas outlet, its air inlet passes through the resonant cavity of admitting air and places the chamber intercommunication with empty filter core, the automobile plastics air cleaner, there is the pressure stabilizing cavity that communicates with it on empty filter core and places the chamber upper portion, the outlet duct stretches out through the pressure stabilizing cavity, the communicating port downward sloping of the resonant cavity of admitting air and empty filter core and placing the chamber, and it is 75 ~ 80 degrees to form β with the vertical direction angle.
CN201250731Y discloses a utility model patent named "multi-chamber noise reduction air filter". The air filter comprises an air filter body and a resonant cavity, wherein the air filter body consists of an upper shell, a lower shell and a filter element arranged between the upper shell and the lower shell, an air outlet is formed in the upper shell, and an air inlet is formed in the lower shell; the lower part of the lower shell is provided with a resonant cavity by a partition plate, the resonant cavity is communicated with the upper space of the lower shell through a through hole or a conduit, and the air inlet is formed in the upper space of the lower shell.
The utility model discloses a name is "an engine air filter" in CN202718783U, it is including the hose of giving vent to anger that connects gradually, empty casing, filter core, empty casing, resonant cavity casing and anterior segment intake pipe under straining, empty bottom of straining the casing with the resonant cavity casing passes through the clamp connection, the anterior segment intake pipe is including empty filter connecting pipe and resonant cavity connecting pipe, empty filter connecting pipe with empty filter casing coupling down, the resonant cavity connecting pipe with resonant cavity casing connects.
In both of the above two patents, the resonance chamber is provided at the lower part of the air filter housing, which can reduce noise, but still has the problem of insignificant noise reduction effect.
The utility model discloses a utility model of the name "an empty filter of integrated a plurality of resonant cavities" in CN206368765U, it includes casing and upper cover down, and this empty filter connects the intake pipe, the inside joint connecting pipe of the lower casing of empty filter, insert on the outer wall of connecting pipe and establish a plurality of resonating tubes, be equipped with the resonant cavity in the resonating tube. Although the resonator tubes are mounted in the lower case in this patent, they have a certain effect, but the effect of reducing noise and vibration is limited.
Disclosure of Invention
The invention aims to provide an air filter of an engine, which can greatly reduce air inlet noise and vibration.
The invention aims to realize the technical scheme that the engine air filter comprises an air filter shell with an air filter cover, wherein a filter element assembly is arranged in the air filter shell, an air inlet is formed in the air filter shell, a resonant cavity is arranged on the upper end surface of the air filter shell, the resonant cavity is communicated with the air filter shell through a connecting pipe, and an air outlet is formed in the resonant cavity.
In order to prevent oil mist in the carburetor from entering the air filter, the resonant cavity comprises a resonant cavity shell and a resonant cavity cover arranged on one side of the resonant cavity shell, the air outlet is arranged on the lower portion of the outer wall of the resonant cavity shell, and a back-spraying blocking device is arranged on the inner wall of the resonant cavity shell and corresponds to the air outlet.
The reverse spraying blocking device comprises a reverse spraying baffle, the cross section of the reverse spraying baffle is C-shaped, and the reverse spraying baffle is arranged on the inner wall of the resonant cavity shell and corresponds to the air outlet.
In order to recover engine oil sprayed out of engine waste gas, a waste gas inlet is formed in the upper portion of the resonant cavity shell, and the waste gas inlet is located obliquely above the gas inlet.
Wherein, in order to guide the machine oil in the waste gas to get into the air inlet be provided with the waste gas recovery board that stretches out the resonant cavity lid on the resonant cavity lid inner wall, waste gas recovery board cross-section is the U type, waste gas recovery board and waste gas import are corresponding, and waste gas recovery board is located the reverse-spraying baffle top.
In order to recover fuel oil in the carbon tank, a carbon tank desorption interface communicated with the inner cavity of the resonant cavity shell is arranged on the resonant cavity cover.
Further described, the filter element assembly includes a filter element and a flow guide sleeve, the flow guide sleeve is arranged on the upper portion of the filter element in an interference mode, and the height of the flow guide sleeve is larger than the diameter of the air inlet.
In order to guide the intake airflow and further reduce the noise, an air guide spiral surface A is arranged on the upper end surface of the inner cavity of the air filter shell; and the upper part of the inner cavity of the air filter cover is provided with an air guide spiral surface B matched with the air guide spiral surface A, and the height of the stopping point of the air guide spiral surface B is smaller than that of the air guide sleeve.
In order to limit the filter element assembly and remove dust, the lower part of the inner wall of the air filter cover is provided with an axial limiting step and a radial limiting step which are matched with the filter element assembly, a dust removing opening is formed in the position, which is intersected with the excircle of the air filter cover, of the rear end of one side of the axial limiting step, and the direction of the dust removing opening is consistent with the tangential direction of the excircle of the air filter cover.
For convenience of installation, the installation surfaces of the air filter shell and the air filter cover are inclined planes.
By adopting the technical scheme, the invention has the advantages of ingenious structural design, reliable use and low cost, can reduce air resistance and air inlet noise and vibration, has good separation effect, is convenient and simple to remove dust, and also has the advantages of convenient assembly and disassembly and long service life.
Drawings
The drawings of the invention are illustrated as follows:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of a resonant cavity of the present invention;
FIG. 3 is a schematic diagram of the structure of the cover of the resonant cavity of the present invention;
FIG. 4 is a schematic view of a cartridge assembly according to the present invention;
FIG. 5 is a schematic view of the construction of the air filter cover of the present invention;
fig. 6 is a schematic view of the structure of the air filter housing of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to these embodiments, and any modifications or substitutions in the basic spirit of the embodiments will still fall within the scope of the present invention as claimed in the claims.
Example 1: as shown in fig. 1 and 2, an engine air filter comprises an air filter housing 2 with an air filter cover 1, a filter element assembly 3 is arranged in the air filter housing 2, an air inlet 4 is arranged on the air filter housing 2, a resonant cavity 5 is arranged on the upper end surface of the air filter housing 2, the resonant cavity 5 is communicated with the air filter housing 2 through a connecting pipe 6, and an air outlet 7 is arranged on the resonant cavity 5.
Due to the presence of the resonant cavity 5 provided on the air filter housing 2, intake noise and vibration can be greatly reduced.
In order to prevent oil mist in the carburetor from entering the air filter, the resonant cavity 5 comprises a resonant cavity shell 8 and a resonant cavity cover 9 arranged on one side of the resonant cavity shell 8, the air outlet 7 is arranged on the lower portion of the outer wall of the resonant cavity shell 8, and a back-spraying blocking device is arranged on the inner wall of the resonant cavity shell 8 and corresponds to the air outlet 7.
The reverse spraying blocking device comprises a reverse spraying baffle 10, the cross section of the reverse spraying baffle 10 is C-shaped, and the reverse spraying baffle 10 is arranged on the inner wall of the resonant cavity shell 8 and corresponds to the gas outlet 7.
In order to recover the engine oil in the exhaust gas, an exhaust gas inlet 11 is arranged at the upper part of the resonant cavity shell 8, and the exhaust gas inlet 11 is positioned obliquely above the air inlet 4.
As shown in fig. 2 and 3, in order to enable the engine oil in the exhaust gas to conveniently and smoothly enter the air inlet and enter the combustion chamber of the engine through the air inlet to be combusted, an exhaust gas recovery plate 12 extending out of the resonant cavity cover 9 is arranged on the inner wall of the resonant cavity cover 9, the section of the exhaust gas recovery plate 12 is U-shaped, the exhaust gas recovery plate 12 corresponds to the exhaust gas inlet 11, and the exhaust gas recovery plate 12 is located above the reverse-spraying baffle 10.
In order to recover the fuel oil in the carbon tank, a carbon tank desorption interface 13 communicated with the inner cavity of the resonant cavity shell 8 is arranged on the resonant cavity cover 9.
As shown in fig. 4, in the present invention, the filter element assembly 3 includes a filter element 14 and a flow guide sleeve 15, the flow guide sleeve 15 is disposed on the upper portion of the filter element 14 in an interference manner, and the height of the flow guide sleeve 15 is greater than the diameter of the air inlet 4.
As shown in fig. 5 and 6, in order to guide air introduced into the air filter, an air guide spiral surface a16 is provided on an upper end surface of an inner cavity of the air filter housing 2; an air guide spiral surface B17 matched with the air guide spiral surface A16 is arranged at the upper part of the inner cavity of the air filter cover 1, and the height of the stopping point of the air guide spiral surface B17 is smaller than that of the air guide sleeve 15.
As shown in fig. 5, in order to facilitate the limitation of the filter element assembly, an axial limiting step 18 and a radial limiting step 19 which are matched with the filter element assembly 3 are arranged on the lower portion of the inner wall of the air filter cover 1, a dust removing opening 20 is arranged at the rear end of one side of the axial limiting step 18 and the intersection of the rear end and the outer circle of the air filter cover 1, and the direction of the dust removing opening 20 is consistent with the tangential direction of the outer circle of the air filter cover 1.
In order to facilitate and disassemble and assemble the filter element 3 assembly, the installation surfaces of the air filter shell 2 and the air filter cover 1 are inclined surfaces 21.
In the invention, after the engine works, the air filter is influenced by negative pressure, external air enters the inner cavity of the air filter shell 2 through the air inlet 4, then the air is filtered through the filter element assembly 3, the filtered air enters the connecting pipe 6 from the center of the filter element assembly 3, then enters the resonant cavity shell 8 through the connecting pipe 6, and the air entering the resonant cavity shell 8 enters the carburetor through the air outlet 7; meanwhile, the waste gas and the oil mist in the carbon tank enter the resonant cavity shell 8 through the waste gas inlet 11 and the carbon tank desorption interface 13 respectively, and then enter the carburetor through the gas outlet 7.
Due to the resonant cavity 5, air intake noise and vibration can be greatly reduced.
Claims (10)
1. An engine air filter, includes empty filter casing (2) of taking empty filter lid (1), be provided with filter core assembly (3) in empty filter casing (2), be provided with air inlet (4) on empty filter casing (2), characterized by: empty filter casing (2) up end is provided with resonant cavity (5), resonant cavity (5) are through connecting pipe (6) and empty filter casing (2) intercommunication resonant cavity (5) are last to be provided with gas outlet (7).
2. An air filter for an engine as claimed in claim 1, wherein: resonant cavity (5) include resonant cavity casing (8) and set up resonant cavity lid (9) in resonant cavity casing (8) one side, gas outlet (7) set up the outer wall lower part at resonant cavity casing (8) just be provided with the back flush stop device corresponding gas outlet (7) on the inner wall of resonant cavity casing (8).
3. An air filter for an engine as claimed in claim 2, wherein: the reverse-spraying blocking device comprises a reverse-spraying baffle (10), the cross section of the reverse-spraying baffle (10) is C-shaped, and the reverse-spraying baffle (10) is arranged on the inner wall of the resonant cavity shell (8) and corresponds to the gas outlet (7).
4. An engine air filter according to claim 3, wherein: and a waste gas inlet (11) is formed in the upper part of the resonant cavity shell (8), and the waste gas inlet (11) is positioned above the air inlet (4) in an inclined mode.
5. An engine air filter according to claim 4, wherein: be provided with waste gas recovery board (12) that stretches out resonant cavity lid (9) on resonant cavity lid (9) inner wall, waste gas recovery board (12) cross-section is the U type, waste gas recovery board (12) are corresponding with waste gas import (11), and waste gas recovery board (12) are located back-spray baffle (10) top.
6. An engine air filter according to claim 5, wherein: a carbon tank desorption interface (13) communicated with the inner cavity of the resonant cavity shell (8) is arranged on the resonant cavity cover (9).
7. An engine air filter according to claim 6, wherein: the filter core assembly (3) comprises a filter core (14) and a flow guide cover (15), wherein the flow guide cover (15) is arranged on the upper portion of the filter core (14) in an interference mode, and the height of the flow guide cover (15) is larger than the diameter of the air inlet (4).
8. An air filter for an engine as claimed in claim 7, wherein: an air guide spiral surface A (16) is arranged on the upper end surface of the inner cavity of the air filter shell (2); an air guide spiral surface B (17) matched with the air guide spiral surface A (16) is arranged at the upper part of the inner cavity of the air filter cover (1), and the height of the stopping point of the air guide spiral surface B (17) is smaller than that of the air guide sleeve (15).
9. An engine air filter according to claim 8, wherein: the inner wall lower part of empty filter lid (1) is provided with axial spacing step (18) and radial spacing step (19) with filter core assembly (3) complex the rear end of one side of axial spacing step (18) just is provided with dust removal mouth (20) with the crossing department of empty filter lid (1) excircle, the direction of dust removal mouth (20) is unanimous with the tangential direction of empty filter lid (1) excircle.
10. An engine air filter according to claim 9, wherein: the mounting surfaces of the air filter shell (2) and the air filter cover (1) are inclined surfaces (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343903.9A CN110939536A (en) | 2019-12-24 | 2019-12-24 | Air filter of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343903.9A CN110939536A (en) | 2019-12-24 | 2019-12-24 | Air filter of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110939536A true CN110939536A (en) | 2020-03-31 |
Family
ID=69912815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911343903.9A Pending CN110939536A (en) | 2019-12-24 | 2019-12-24 | Air filter of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110939536A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555069A (en) * | 2020-12-04 | 2021-03-26 | 隆鑫通用动力股份有限公司 | Air filter, internal combustion engine, and internal combustion engine generator |
| CN114576050A (en) * | 2022-03-18 | 2022-06-03 | 河南隆鑫机车有限公司 | Air filter and engine |
-
2019
- 2019-12-24 CN CN201911343903.9A patent/CN110939536A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555069A (en) * | 2020-12-04 | 2021-03-26 | 隆鑫通用动力股份有限公司 | Air filter, internal combustion engine, and internal combustion engine generator |
| CN112555069B (en) * | 2020-12-04 | 2021-11-12 | 隆鑫通用动力股份有限公司 | Air filter, internal combustion engine, and internal combustion engine generator |
| CN114576050A (en) * | 2022-03-18 | 2022-06-03 | 河南隆鑫机车有限公司 | Air filter and engine |
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