CN200971820Y - Low noise air cleaner - Google Patents
Low noise air cleaner Download PDFInfo
- Publication number
- CN200971820Y CN200971820Y CN 200620027459 CN200620027459U CN200971820Y CN 200971820 Y CN200971820 Y CN 200971820Y CN 200620027459 CN200620027459 CN 200620027459 CN 200620027459 U CN200620027459 U CN 200620027459U CN 200971820 Y CN200971820 Y CN 200971820Y
- Authority
- CN
- China
- Prior art keywords
- air
- filter core
- low noise
- cover body
- noise
- 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 - Lifetime
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses a low noise air filter which comprises a cover body and a filter core. The cover body is provided with an air inlet and an air outlet which are respectively connected with an air inlet pipe and an air outlet pipe. Clapboards which are fixed in the cover body are arranged between the air inlet pipe and the air outlet pipe. The filter core is arranged among the clapboards. The filter core of the utility model does not only have the function of filtering, but also have the function of eliminating the noise of the entering air. The utility model with the device can reduce the complete appliance noise of the engine by 2dB to 3dB as the two cavities divided by the filter core have the functions of expansion, flow steadying and resonating.
Description
Technical field
The utility model relates to a kind of air-strainer, relates in particular to a kind of air-strainer that is used on the mini engine.
Background technique
The problem that existing mini engine in use exists noise to exceed standard, and a main noise source is exactly an air-strainer.When engine charge, can produce very high turbulence noise because the periodicity of intake valve opens and closes when causing cavity pressure fluctuation and high velocity air by air-strainer, so the noise level of air-strainer position is higher relatively.The basic structure of existing air-strainer is that suction port is opened in the cover body side mostly, at suction port place guide plate water conservancy diversion, when being air inlet, its shortcoming can cause the turbulence noise of regeneration, make noise level become bigger, and after the position that filter core is laid too leans on, only play a role in filtering, fact proved that this simple collocation can not accomplish low noise work.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of low noise air-strainer that can reduce induction noise is provided.
A kind of low noise air-strainer of the present utility model, comprise cover body and filter core, have inlet, outlet on the described cover body, described inlet, outlet is connected with the inlet, outlet conduit respectively, between described inlet, outlet conduit, be provided with the dividing plate that is fixed in the described cover body, accompany filter core between the described dividing plate.
Filter core of the present utility model is except that playing a role in filtering, also play the effect of eliminating gas noise, two cavitys that filter core separates play the effect that expansion, current stabilization and interference are eliminated the noise, owing to adopted air inlet duct and exhaust manifolds to make that the turbulence intensity of the air flow field in the air-strainer obviously reduces, flow velocity reduces, thereby adopts this device not only can reduce pressure surge but also can reduce turbulence noise.
The utility model is installed on existing certain model motor, compares the reduction that former machine on average obtains 2-3dB according to the 2000/14/EC of European Union standard testing total noise of centrifuge.
Description of drawings
Fig. 1 is the 3-D view of the utility model low noise air-strainer;
Fig. 2 is the plan view of low noise air-strainer;
Fig. 3 is the side view of device shown in Figure 2;
Fig. 4 is the C-C sectional drawing of device shown in Figure 2;
Fig. 5 is the D-D sectional drawing of device shown in Figure 3;
Fig. 6 is a low noise air-strainer cavity 3-D view.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done to describe in detail.
Low noise air-strainer of the present utility model, it comprises cover body 8, filter core 5, is provided with the cushion rubber 7 of sealing usefulness in the cover body 8.Have into 1 on the described cover body 8, air outlet 2, described suction port 1 is preferably opened the end face at cover body 8, describedly advance 1, air outlet 2 is connected with into 3 respectively, outtake tube 4, describedly advancing 3, being provided with the dividing plate 6 that is fixed in the described cover body 8 between the outtake tube 4, accompany filter core 5 between the described dividing plate 6.Described filter core 5 is a porous material, as sponge.Filter core 5 also plays the effect of eliminating gas noise except that playing a role in filtering.Two cavitys that separated by filter core 5 play the effect that expansion, current stabilization, interference are eliminated the noise.Described air inlet duct 3 preferably is oppositely arranged with described outtake tube 4.Suitably perforate on the outtake tube 4 helps reducing gas noise.Its central diaphragm 6 profiles are decided by cover body 8, and fixing except playing, as to support filter core 5 effect can also have air hole on dividing plate 6, help two chamber pressures of balance and play the flow velocity that slows down, reduction noise contributions.Outer cover, conduit, dividing plate can be made with metal or nonmetallic material.
Working principle of the present utility model is that gas enters air inlet duct 3 by suction port 1 in engine intake process, high-speed gas flows out from air inlet duct 3 and impacts on the filter core 5, because filter core 5 is cellular porous structures, gas flow rate is significantly reduced, most of gas obtains expanding by the chamber that filter core 5 enters outtake tube 4 places, current stabilization, part gas forms secondary flow and does not obtain expanding by the chamber that filter core 5 enters air inlet duct 3 places, current stabilization, because two cavity pressure differences, can be rapidly by the hole on the dividing plate 6, filter core 5 makes pressure, the flow velocity balance, because the mutual interference of gas is significantly reduced noise, this process is accompanied by gas all the time and enters outtake tube 4, because when motor is in aspirating stroke, the pressure of air outlet 2 is minimum, low velocity gas can be endlessly discharged by air outlet 2, and air inlet duct 3 and outtake tube 4 are oppositely arranged and help gas and discharge rapidly.
Claims (6)
1. low noise air-strainer, it comprises cover body, filter core, have inlet, outlet on the described cover body, it is characterized in that: described inlet, outlet is connected with the inlet, outlet conduit respectively, between described inlet, outlet conduit, be provided with the dividing plate that is fixed in the described cover body, accompany filter core between the described dividing plate.
2. low noise air-strainer according to claim 1 is characterized in that: have the hole on the described dividing plate.
3. low noise air-strainer according to claim 1 is characterized in that: described suction port is opened the end face at cover body.
4. low noise air-strainer according to claim 1 is characterized in that: described filter core is a porous material.
5. low noise air-strainer according to claim 1 is characterized in that: described air inlet duct and described outtake tube are oppositely arranged.
6. low noise air-strainer according to claim 1 is characterized in that: have the hole on the described outtake tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620027459 CN200971820Y (en) | 2006-09-29 | 2006-09-29 | Low noise air cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620027459 CN200971820Y (en) | 2006-09-29 | 2006-09-29 | Low noise air cleaner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200971820Y true CN200971820Y (en) | 2007-11-07 |
Family
ID=38883075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620027459 Expired - Lifetime CN200971820Y (en) | 2006-09-29 | 2006-09-29 | Low noise air cleaner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200971820Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7654239B2 (en) * | 2001-12-20 | 2010-02-02 | American Diesel & Gas, Inc. | Fuel saving combustion engine insulation method and system |
| CN105422332A (en) * | 2015-12-18 | 2016-03-23 | 力帆实业(集团)股份有限公司 | Automobile and air filter assembly thereof |
-
2006
- 2006-09-29 CN CN 200620027459 patent/CN200971820Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7654239B2 (en) * | 2001-12-20 | 2010-02-02 | American Diesel & Gas, Inc. | Fuel saving combustion engine insulation method and system |
| CN105422332A (en) * | 2015-12-18 | 2016-03-23 | 力帆实业(集团)股份有限公司 | Automobile and air filter assembly thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071107 |
|
| EXPY | Termination of patent right or utility model |