CN101230817A - Air prefilter - Google Patents
Air prefilter Download PDFInfo
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- CN101230817A CN101230817A CNA2007100132829A CN200710013282A CN101230817A CN 101230817 A CN101230817 A CN 101230817A CN A2007100132829 A CNA2007100132829 A CN A2007100132829A CN 200710013282 A CN200710013282 A CN 200710013282A CN 101230817 A CN101230817 A CN 101230817A
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- outlet pipe
- shell
- outer housing
- air
- steam outlet
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to an air prefilter. A plurality of inclined and circumferential equispaced wind guide vanes are arranged in the upper end opening of a vertically circular outer housing of the invention, and a horizontal shield cover is arranged in the lower end opening of the outer housing; a vertically circular air outlet pipe is arranged in the shield cover, and the lower end of the circumferential outer wall of the outer housing is provided with a horizontal injection dust pipe. The height of the outer housing is 1 to 1.5 times more than the inner diameter of the outer housing, and the inner diameter of the outer housing is 1.5 to 2.5 times more than the inner diameter of the air outlet pipe. The inner side of the wind guide vane is fixedly connected with a vertically circular center pipe, the upper end of the vertically circular center pipe is sealed and the lower end is open; the outer side of the wind guide vane is fixedly connected with the circumferential inner wall of the outer housing. The upper end of the air outlet pipe extends into the outer housing; the height of the air outlet pipe is 1.25 to 5 times more than the height of the pipe body that the air outlet pipe is positioned in the outer housing; dust storage cavities communicated with the injection dust pipe are formed among the pipe body that the air outlet pipe is positioned in the outer housing, the outer housing and the shield cover. The lower end of a vertically circular air inlet net penetrates through the upper end opening of the outer housing and contacts the wind guide vanes; an air inlet cap connected with the center pipe is arranged at the upper end of the air inlet net. The filter efficiency of the invention is high, and the cost is low.
Description
Technical field
The present invention relates to a kind of air filtration and purification apparatus that is installed on the motor car engine, particularly relate to a kind of air prefilter.
Background technique
At present, be installed in that air strainer (air-strainer) air prefilter before on the motor car engine is of a great variety, structure is different (as benzvalene form, eddy flow tubular type prefilter etc.).According to existing industry technology standard, the filter efficiency of benzvalene form prefilter 〉=80%, filter efficiency 〉=90% of eddy flow tubular type prefilter.But in use, the actual filtration efficient of benzvalene form prefilter is below 75%, and the actual filtration efficient of eddy flow tubular type prefilter is about 80%.Therefore, existing air prefilter ubiquity the low defective of filter efficiency, has so just shortened the working life of motor car engine greatly.For improving filter efficiency, the manufacturer that has does not stint and adopts precious materials, labyrinth, so that cost is higher.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, provide a kind of filter efficiency higher, lower-cost air prefilter.
For achieving the above object, the invention provides a kind of air prefilter, some inclinations and circumferential uniform wind guiding blade are arranged in the upper end open of its vertical shape circular housing, have in the lower ending opening vertical circular steam outlet pipe is housed on horizontal door and the door, there is the injection dust flue of level the lower end of peripheral outer wall, the height of shell is 1～1.5 times of internal diameter of outer cover, the internal diameter of shell is 1.5～2.5 times of steam outlet pipe internal diameter, the uncovered vertical shape circular central pipe in the inboard of wind guiding blade and last end closure and lower end is affixed, the outside is affixed with the inner circumferential wall of shell, the upper end of steam outlet pipe puts in the shell, the height of steam outlet pipe is 1.25～5 times that steam outlet pipe is in interior that section body height of shell, steam outlet pipe is in that section body and the shell in the shell, form a dust cavity that communicates with the injection dust flue between the door, the upper end open that shell is passed in the lower end of the circular air inlet net of vertical shape contacts with wind guiding blade, with the upper end of the joining air inlet calotte of center tube at the air inlet net.
Steam outlet pipe is communicated with air-strainer on the motor car engine, and the injection dust flue is communicated with the tailpipe of motor, and like this, this air prefilter just is installed in before the air-strainer on the motor car engine, can normally use.
During use, the motor car engine of work makes and produces negative pressure in this air prefilter, air passes the air inlet net and is sucked in the shell between the adjacent wind guiding blade, the wind guiding blade that tilts has changed the flow direction of air and has produced eddy current, makes the air that enters in the shell be rotated by centrifugation.Like this, under the centrifugal action that is produced, airborne most pollutant (as dust, foul, rainwater, snow etc.) is separated and falls into dust cavity, when engine exhaust passes through tailpipe, utilize formed parital vacuum in this pipe, make the pollutant in the dust cavity be inhaled in the tailpipe, and together enter atmosphere with engine exhaust through the injection dust flue.The air that cleans behind the pre-flock enters in the motor of Motor Vehicle through steam outlet pipe, air-strainer successively.
After adopting such structure, this air prefilter is the purpose that reaches separating contaminants by the principle of centrifugal force, its reasonable structural design has improved centrifugal force greatly, guaranteed under the situation of minimum drag, reach best filtering effect, therefore, the filter efficiency of this air prefilter is higher, after tested, but the filtering of this air prefilter enters in its interior air and surpasses 90% pollutant, be that filter efficiency reaches more than 90%, so just prolonged the working life of motor car engine greatly; In addition, this air prefilter only is made up of several parts, and simple in structure, therefore, the cost of this air prefilter is lower.
This air prefilter is widely applicable for the engineering machinery of working in the rugged environment, agriculture and forestry machinery, fixed equipment, special vehicle, passenger vehicle, bus etc.
Description of drawings
Fig. 1 is the structural representation of air prefilter of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Resistance and filter efficiency curve when Fig. 3 is an air with different charge flow rates by existing air prefilter;
Fig. 4 be air with different charge flow rates resistance and the filter efficiency curve during by air prefilter of the present invention.
Embodiment
Below in conjunction with accompanying drawing air prefilter of the present invention is specifically described:
Referring to Fig. 1, Fig. 2, there are 9 to tilt and circumferential uniform wind guiding blade 2 in the upper end open of the vertical shape circular housing 1 of air prefilter of the present invention, there is the center region of horizontal door 1a and door 1a that vertical circular steam outlet pipe 10 is housed in the lower ending opening, there is the injection dust flue 11 of level the lower end of peripheral outer wall, the height of shell 1 is 31cm, the internal diameter of shell 1 is 23.8cm, like this, the height of shell 1 is about 1.30 times of shell 1 internal diameter, the internal diameter of steam outlet pipe 10 is 12.8cm, like this, the internal diameter of shell 1 is about 1.86 times of steam outlet pipe 10 internal diameters, the uncovered vertical shape circular central pipe 5 in the inboard of wind guiding blade 2 and last end closure and lower end is affixed, the outside is affixed with the inner circumferential wall of shell 1, angle between wind guiding blade 2 and horizontal plane is 32 degree, the upper head plate center of center tube 5 has perforation (omitting the piece number of perforation in the accompanying drawing), nut 8 be installed in center tube 5 the upper head plate bottom surface and with the perforation coaxial line, the upper end of steam outlet pipe 10 puts in the shell 1, the height of steam outlet pipe 10 is 32cm, the height that steam outlet pipe 10 is in that section body in the shell 1 is 17cm, like this, the height of steam outlet pipe 10 is about steam outlet pipe 10 and is in 1.88 times of that section body height in the shell 1, steam outlet pipe 10 is in that section body and the shell 1 in the shell 1, form a dust cavity 9 that communicates with injection dust flue 11 between the door 1a, the upper end open that shell 1 is passed in the lower end of the circular air inlet net 3 of vertical shape contacts with wind guiding blade 2, the air inlet cap 4 that the center has a through hole covers on the upper end (omitting the piece number of through hole in the accompanying drawing) of air inlet net 3, the lower end of double threaded screw 7 spins with nut 8 after passing the perforation of the through hole of air inlet cap 4 and center tube 5 successively, upper end spinning one and the air inlet cap 4 tight fastening screw nuts 6 that contact, like this, air inlet cap 4 links by double threaded screw 7 with center tube 5.
Air prefilter of the present invention adopts rationally simple structural design, has overcome the shortcoming of existing air prefilter, under the prerequisite that increases minimum drag, improves filtering effect to greatest extent, thereby has higher, the lower-cost advantage of filter efficiency.
For the checking air prefilter of the present invention filter efficiency higher, existing air prefilter, air prefilter of the present invention are carried out the test stand performance comparative trial respectively, and test result sees Table I (the former prefilter in the Table I is meant that existing air prefilter, this prefilter are meant air prefilter of the present invention).
Table I
By Table I as seen, air prefilter of the present invention is compared with existing air prefilter, its test room's filter efficiency is significantly improved, under the actual user mode of air prefilter of the present invention therefore, the filter efficiency of (being that it is installed in before the air-strainer on the motor car engine) also can be significantly improved.
Resistance and filter efficiency curve when Fig. 3 is an air with different charge flow rates by existing air prefilter.From Fig. 3, can clearly be seen that, when the charge flow rate of air is respectively 700,800,900,1000,1100,1200,1300m
3(chosen seven different air inlet flow numbers) during/h, pairing resistance is respectively 80,93,120,147,174,211,244mmH
2O, pairing filter efficiency is respectively 87.43,88.2,89.56,91.33,92.42,93,92.85%.
Fig. 4 be air with different charge flow rates resistance and the filter efficiency curve during by air prefilter of the present invention.From Fig. 4, can clearly be seen that, when the charge flow rate of air is respectively 700,800,900,1000,1100,1200,1300m
3(chosen seven different air inlet flow numbers) during/h, pairing resistance is respectively 63,77,96,121,143,169,198mmH
2O, pairing filter efficiency is respectively 90.65,91.87,93.75,95.25,96.33,97.12,97.85%.
For finding out more intuitively that the filter efficiency of air prefilter of the present invention is higher, with seven the pairing resistance numerical value of different air inlet flow numbers separately among Fig. 3, Fig. 4 and filter efficiency numerical value by Table II reaction following (the former prefilter in the Table II is meant that existing air prefilter, this prefilter are meant air prefilter of the present invention).
Table II
By Table II as seen, air prefilter of the present invention is compared with existing air prefilter, the pairing resistance numerical value of each identical air inlet flow number is little, and filter efficiency numerical value wants high, in other words, air prefilter of the present invention has reached best filtering effect under situation about guaranteeing than slight drag, filter efficiency is significantly improved.
In sum, the filter efficiency of air prefilter of the present invention is higher.Like this, will help significantly reducing the pollutant that enters engine aspirating system, reduce the wearing and tearing between engine piston, cylinder sleeve, prolong the working life of motor, improve engine power, for advantageous conditions has been created in the raising of engine performance.
Above-described only is a kind of mode of execution of air prefilter of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the principle of the invention, can also make some modification and improvement, these also should be considered as belonging to protection scope of the present invention.Such as: the sheet number of wind guiding blade can determine as required flexibly, angle between wind guiding blade and horizontal plane can determine in the scope of 25～35 degree as required flexibly, outer cover height, internal diameter of outer cover can determine internal diameter of outer cover flexibly within the multiple scope at both under the precondition that the flow of guaranteeing air prefilter of the present invention and motor car engine is complementary, steam outlet pipe internal diameter and steam outlet pipe height, that section body height that steam outlet pipe is in the shell can guarantee that air prefilter of the present invention reaches under the precondition of optimum filtration efficient decision flexibly within the above two and both multiple scopes of back.
Claims (1)
1. air prefilter, some inclinations and circumferential uniform wind guiding blade are vertically arranged in the upper end open of shape circular housing, have in the lower ending opening vertical circular steam outlet pipe is housed on horizontal door and the door, there is the injection dust flue of level the lower end of peripheral outer wall, the uncovered vertical shape circular central pipe in the inboard of wind guiding blade and last end closure and lower end is affixed, the outside is affixed with the inner circumferential wall of shell, the upper end open that shell is passed in the lower end of the circular air inlet net of vertical shape contacts with wind guiding blade, with the upper end of the joining air inlet calotte of center tube at the air inlet net, it is characterized in that: the height of shell is 1～1.5 times of internal diameter of outer cover, the internal diameter of shell is 1.5～2.5 times of steam outlet pipe internal diameter, the upper end of steam outlet pipe puts in the shell, the height of steam outlet pipe is 1.25～5 times that steam outlet pipe is in interior that section body height of shell, and steam outlet pipe is in that section body and the shell in the shell, form a dust cavity that communicates with the injection dust flue between the door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100132829A CN101230817A (en) | 2007-01-26 | 2007-01-26 | Air prefilter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100132829A CN101230817A (en) | 2007-01-26 | 2007-01-26 | Air prefilter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101230817A true CN101230817A (en) | 2008-07-30 |
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ID=39897574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100132829A Pending CN101230817A (en) | 2007-01-26 | 2007-01-26 | Air prefilter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101230817A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454516A (en) * | 2010-10-18 | 2012-05-16 | 郝进才 | Coarse strainer capable of discharging dust |
| CN103068463A (en) * | 2011-03-15 | 2013-04-24 | 康明斯过滤Ip公司 | Cost-effective tunable precleaner |
| CN109653909A (en) * | 2019-03-04 | 2019-04-19 | 蚌埠国威滤清器有限公司 | A kind of rotor air prefilter |
-
2007
- 2007-01-26 CN CNA2007100132829A patent/CN101230817A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454516A (en) * | 2010-10-18 | 2012-05-16 | 郝进才 | Coarse strainer capable of discharging dust |
| CN103068463A (en) * | 2011-03-15 | 2013-04-24 | 康明斯过滤Ip公司 | Cost-effective tunable precleaner |
| CN103068463B (en) * | 2011-03-15 | 2015-06-24 | 康明斯过滤Ip公司 | Cost-effective tunable precleaner |
| CN109653909A (en) * | 2019-03-04 | 2019-04-19 | 蚌埠国威滤清器有限公司 | A kind of rotor air prefilter |
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Open date: 20080730 |