CN201011326Y - Air prefilter - Google Patents
Air prefilter Download PDFInfo
- Publication number
- CN201011326Y CN201011326Y CNU2007200177948U CN200720017794U CN201011326Y CN 201011326 Y CN201011326 Y CN 201011326Y CN U2007200177948 U CNU2007200177948 U CN U2007200177948U CN 200720017794 U CN200720017794 U CN 200720017794U CN 201011326 Y CN201011326 Y CN 201011326Y
- Authority
- CN
- China
- Prior art keywords
- shell
- outlet pipe
- air
- prefilter
- steam outlet
- 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.)
- Expired - Fee Related
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- 238000011045 prefiltration Methods 0.000 title claims abstract description 64
- 239000000428 dust Substances 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 9
- 238000007599 discharging Methods 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- VMQPMGHYRISRHO-UHFFFAOYSA-N benzvalene Chemical group C1=CC2C3C1C32 VMQPMGHYRISRHO-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 241000272173 Calidris Species 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Images
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model relates to an air pre-filter. A plurality of oblique and circumferentially even-distributed wind guide blades are arranged inside the top opening of the upright round shell, while a flat baffle cover is arranged inside the bottom opening and provided with an upright round air outlet pipe, and a flat injecting dust discharging tube is arranged at the lower end of the outer wall, while the height of the outer shell is 1 to 1.5 times of the inner diameter of the shell, and the inner diameter is 1.5 to 2.5 times of the inner diameter of the escape pipe; the inner side of the wind guide blades is fixedly connected with an upright round central tube whose upper end is sealed and the lower end is open; the outside of the wind guide blades is fixedly connected with the inner wall of the shell; the upper end of the air outlet pipe extends into the shell, while the height of the air outlet pipe is 1.25 to 5 times of the height of the part of the air outlet pipe that is arranged in the shell; the part of the air outlet pipe that is arranged outside the shell, the shell as well as the baffle cover form a dust storing cavity; the lower end of an upright air inflow net contacts with the wind guide blade passing through the top opening of the shell, and an air inflow cap that connects with the central pipe covers on the top end of the air inflow net. The utility model has high filtering rate and costs low.
Description
Technical field
The utility model relates to a kind of air filtration and purification apparatus that is installed on the motor car engine, particularly relates 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.
The model utility content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, provides a kind of filter efficiency higher, lower-cost air prefilter.
For achieving the above object, the utility model 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 arrange people's 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 the utility model air prefilter;
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;
Resistance and filter efficiency curve when Fig. 4 is an air with different charge flow rates by the utility model air prefilter.
Embodiment
Below in conjunction with accompanying drawing the utility model air prefilter 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 the utility model air prefilter, 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 inlet net 3, air inlet cap 4 equal buyables.
The utility model air prefilter 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 filter efficiency of checking the utility model air prefilter higher, existing air prefilter, the utility model air prefilter 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 the utility model air prefilter).
Table I
| Air prefilter | Test method | Filter efficiency % | ||
| Technical requirements | Test result | |||
| Control group one | Former prefilter | JB/T9747-2005 combustion air cleaner test method | ≥80 JB/T 9755 | 80.25 |
| This prefilter | 90.65 | |||
| Control group two | Former prefilter | JB/T9747-2005 combustion air cleaner test method | ≥90 JB/T 9755 | 88.73 |
| This prefilter | 93.75 | |||
| Control group three | Former prefilter | JB/T9747-2005 combustion air cleaner test method | ≥93 JB/T 9755 | 91.5 |
| This prefilter | 96.33 | |||
By Table I as seen, the utility model air prefilter is compared with existing air prefilter, its test room's filter efficiency is significantly improved, under the actual user mode of the utility model air prefilter 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%.
Resistance and filter efficiency curve when Fig. 4 is an air with different charge flow rates by the utility model air prefilter.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 the utility model air prefilter 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 the utility model air prefilter).
Table II
| Charge flow rate (m 3/h) | 700 | 800 | 900 | 1000 | 1100 | 1200 | 1300 | |
| Resistance (mmH 2O) | Former prefilter | 80 | 93 | 120 | 147 | 174 | 211 | 244 |
| This prefilter | 63 | 77 | 96 | 121 | 143 | 169 | 198 | |
| Filter efficiency (%) | Former prefilter | 87.43 | 88.2 | 89.56 | 91.33 | 92.42 | 93 | 92.85 |
| This prefilter | 90.65 | 91.87 | 93.75 | 95.25 | 96.33 | 97.12 | 97.85 | |
By Table II as seen, the utility model air prefilter 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, the utility model air prefilter has reached best filtering effect under situation about guaranteeing than slight drag, filter efficiency is significantly improved.
In sum, the filter efficiency of the utility model air prefilter 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 the utility model air prefilter.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.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 the utility model air prefilter 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 the utility model air prefilter 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 |
|---|---|---|---|
| CNU2007200177948U CN201011326Y (en) | 2007-01-26 | 2007-01-26 | Air prefilter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200177948U CN201011326Y (en) | 2007-01-26 | 2007-01-26 | Air prefilter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201011326Y true CN201011326Y (en) | 2008-01-23 |
Family
ID=39046270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200177948U Expired - Fee Related CN201011326Y (en) | 2007-01-26 | 2007-01-26 | Air prefilter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201011326Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105664594A (en) * | 2016-02-17 | 2016-06-15 | 柳州日高滤清器有限责任公司 | Multi-swirl-pipe high-flow dust-discharging and ejecting air prefilter |
| CN105887544A (en) * | 2016-04-15 | 2016-08-24 | 广西科技大学 | Fiber separator rotor and fiber separation device |
| CN106762260A (en) * | 2016-12-30 | 2017-05-31 | 雷沃重工股份有限公司 | Prefilter and the air-intaking filter of engine using the prefilter |
| US11082818B2 (en) * | 2017-11-29 | 2021-08-03 | Qualcomm Incorporated | Method and apparatus for requesting a transport vehicle from a mobile device |
-
2007
- 2007-01-26 CN CNU2007200177948U patent/CN201011326Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105664594A (en) * | 2016-02-17 | 2016-06-15 | 柳州日高滤清器有限责任公司 | Multi-swirl-pipe high-flow dust-discharging and ejecting air prefilter |
| CN105887544A (en) * | 2016-04-15 | 2016-08-24 | 广西科技大学 | Fiber separator rotor and fiber separation device |
| CN106762260A (en) * | 2016-12-30 | 2017-05-31 | 雷沃重工股份有限公司 | Prefilter and the air-intaking filter of engine using the prefilter |
| CN106762260B (en) * | 2016-12-30 | 2022-11-29 | 潍柴雷沃智慧农业科技股份有限公司 | Prefilter and engine intake air filtering device adopting prefilter |
| US11082818B2 (en) * | 2017-11-29 | 2021-08-03 | Qualcomm Incorporated | Method and apparatus for requesting a transport vehicle from a mobile device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080123 Termination date: 20130126 |