CN215719158U - Noise reduction type air filter - Google Patents
Noise reduction type air filter Download PDFInfo
- Publication number
- CN215719158U CN215719158U CN202122268044.0U CN202122268044U CN215719158U CN 215719158 U CN215719158 U CN 215719158U CN 202122268044 U CN202122268044 U CN 202122268044U CN 215719158 U CN215719158 U CN 215719158U
- Authority
- CN
- China
- Prior art keywords
- lip
- air
- air outlet
- outlet pipe
- inlet
- 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.)
- Active
Links
Images
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses a noise reduction type air filter, which comprises a shell, an air inlet pipe and an air outlet pipe, wherein the shell is internally provided with a filter element, the air inlet pipe and the air outlet pipe are arranged on an air inlet and an air outlet of the shell, the side wall of the air outlet pipe is provided with a resonator, the resonance frequency in the resonator has strong sound absorption capacity, when high-frequency airflow passes through the inlet of the resonator, the resonance frequency of the resonator is matched with the vibration frequency generated by the high-frequency airflow flowing in the air outlet pipe, the response peak value of the airflow vibration can be reduced, the noise of the air flowing through the air outlet pipe is reduced, meanwhile, the air outlet pipe is inserted on the air outlet, the end part positioned in the air outlet is the air inlet end of the air outlet pipe and is provided with an air inlet lip, the air inlet lip comprises an inner lip and an outer lip, the inner side of the inner lip is flush with the inner side wall of the air outlet pipe to form the air inlet of the air outlet pipe, the outer lip surrounds the outer lip, and can reduce the high-frequency airflow entering the air filter to generate vibration to the inlet, the noise is reduced, thereby reducing the influence of the noise on people and being beneficial to improving the comfort of people.
Description
Technical Field
The utility model relates to the technical field of air filters, in particular to an air filter capable of reducing airflow noise.
Background
An air filter is a device for filtering impurities in air through a filter element, and is generally applied to a filter system of an engine. When the engine does work, air filtered by the air filter needs to be absorbed, the air entering the air filter can flow rapidly and generate high-frequency vibration in the working process of the engine, and the vibration is radiated and amplified by a shell of the air filter, an air inlet pipe, an air outlet pipe and other parts to form noise, so that the comfort of people is influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a noise reduction type air filter.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the utility model provides an empty filter of type of making an uproar falls, includes internally mounted has the shell of filter core and installs intake pipe and outlet duct on the shell advances, gas outlet duct lateral wall is equipped with the resonator, the outlet duct cartridge is in on the gas outlet, the tip that is located the gas outlet is the inlet end of outlet duct and is equipped with the lip of admitting air, the lip of admitting air includes interior lip and outer lip, the inboard of interior lip with the inside wall parallel and level of outlet duct, the lip outside including the outer lip surrounds.
The inner lip opening part is arranged in a horn mouth shape.
The inner lip and the outer lip are arranged at intervals.
The air inlet lip and the air outlet pipe are integrally formed.
The utility model has the beneficial effects that: the shell of the utility model is respectively communicated with the air inlet pipe and the air outlet pipe to form an air flow passage, the side wall of the air outlet pipe is provided with a resonator, the resonance frequency in the resonator has strong sound absorption capacity, when high-frequency airflow passes through the inlet of the resonator, the resonance frequency of the resonator is matched with the vibration frequency generated by the high-frequency airflow flowing in the air outlet pipe, the resonator can reduce the response peak value of the airflow vibration, and the noise generated by the air flowing through the air outlet pipe is reduced.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is a schematic diagram of FIG. 1, taken apart;
fig. 3 is an enlarged schematic view at a in fig. 2.
Detailed Description
Referring to fig. 1 to 3, the present invention includes a housing 1 having a filter element 4 mounted therein, and an air inlet pipe 2 and an air outlet pipe 3 mounted on an air inlet and an air outlet of the housing, wherein the housing 1, the air inlet pipe 2 and the air outlet pipe 3 are communicated to form an air flow passage, air flows into the housing along the air inlet pipe 2 and is filtered by the filter element 4 to form clean air, and finally the clean air is sucked into an engine through the air outlet pipe 3, and in the process of this air flow, the sucked air rapidly flows and forms high frequency vibration due to a large negative pressure generated in the engine, in order to reduce radiation amplification and noise generation after the high frequency vibration passes through an air filter, in the present structure, the air outlet pipe 3 is inserted on the air outlet, and a resonator 6 is provided on a side wall thereof, the resonator 6 has a resonance cavity, and a resonance frequency is formed in the resonance cavity and has a strong sound absorption capability, when the high-frequency airflow passes through the inlet of the resonator 6, and the resonance frequency of the resonator 6 is matched with the vibration frequency generated by the high-frequency airflow flowing in the air outlet pipe 3, the resonator 6 can reduce the response peak value of the airflow vibration, and the noise generated by the air flowing through the air outlet pipe 3 is reduced; meanwhile, the end part of the air outlet pipe 3 positioned in the air outlet is an air inlet end and is provided with an air inlet lip 5, the air inlet lip 5 comprises an inner lip 51 and an outer lip 52, the inner side of the inner lip 51 is flush with the inner side wall of the air outlet pipe 3 to form an air inlet of the air outlet pipe, the outer lip 52 surrounds the outer side of the inner lip 51, the vibration of high-frequency airflow entering the air filter to the inlet can be reduced through the arrangement of the outer lip 52, the noise is reduced, in addition, the horn-shaped arrangement of the mouth part of the inner lip 51 is favorable for the airflow to smoothly enter the air outlet pipe 2, and the interference to the airflow is reduced; furthermore, the inner lip 51 and the outer lip 52 are arranged at intervals, so that the mutual interference of the vibration frequencies of the inner lip 51 and the outer lip 52 is avoided, the resonance is not easy to generate, the noise generated by the flow of high-frequency airflow in the air filter is favorably reduced, the influence of the noise on people is reduced, and the use comfort of people is favorably improved.
Furthermore, the air inlet lip 5 and the air outlet pipe 3 are integrally formed, so that the air inlet pipe can be conveniently installed as a whole, and the air inlet lip 5 and the air outlet pipe 2 are more reliably connected by integrally forming.
Claims (4)
1. The utility model provides an empty filter of type of making an uproar falls, includes shell (1) of internally mounted filter core (4) and installs intake pipe (2) and outlet duct (3) on the shell advances, gas outlet, its characterized in that: the utility model discloses a gas outlet pipe, including outlet duct (3), inlet duct (5), inlet lip (52), inlet lip (5), the inboard of inner lip (51) with the inside wall parallel and level of outlet duct (3), outer lip (52) surround in the inner lip (51) outside, outlet duct (3) lateral wall is equipped with resonator (6), outlet duct (3) cartridge is in on the gas outlet, and the tip that is located the gas outlet is the inlet end of outlet duct and is equipped with inlet lip (5), inlet lip (5) are including inner lip (51) and outer lip (52), inner lip (51).
2. A noise reducing air filter according to claim 1, wherein: the mouth part of the inner lip (51) is arranged in a horn shape.
3. A noise reducing air filter according to claim 1, wherein: the inner lip (51) and the outer lip (52) are arranged at intervals.
4. A noise reducing air filter according to claim 1, 2 or 3, wherein: the air inlet lip (5) and the air outlet pipe (3) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122268044.0U CN215719158U (en) | 2021-09-17 | 2021-09-17 | Noise reduction type air filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122268044.0U CN215719158U (en) | 2021-09-17 | 2021-09-17 | Noise reduction type air filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215719158U true CN215719158U (en) | 2022-02-01 |
Family
ID=80022212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122268044.0U Active CN215719158U (en) | 2021-09-17 | 2021-09-17 | Noise reduction type air filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215719158U (en) |
-
2021
- 2021-09-17 CN CN202122268044.0U patent/CN215719158U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215719158U (en) | Noise reduction type air filter | |
| CN108757244A (en) | A kind of engine intake duct | |
| CN110939536A (en) | Air filter of engine | |
| CN215890259U (en) | Noise-reduction air filter | |
| CN2856435Y (en) | Autocar rear silencer assembly | |
| CN210446897U (en) | Silencing assembly of cleaning equipment | |
| CN214480125U (en) | Air supply device of traction motor | |
| CN211777770U (en) | Air inlet filtering silencer | |
| CN208010490U (en) | Silencer element and vehicle with it | |
| CN114382698A (en) | Fuel cell air compressor silencer | |
| CN210460984U (en) | Composite noise elimination filtering structure | |
| CN215256676U (en) | Air compressor silencing device | |
| CN210396921U (en) | Low noise air filter | |
| CN215232921U (en) | Industrial dust collector with noise reduction structure | |
| CN211038871U (en) | Air filter of engine | |
| CN209324560U (en) | Muffler built in a kind of combined type high frequency air filter | |
| CN218624402U (en) | Pressure boost intercooling system and vehicle | |
| CN205977491U (en) | Air cleaner in integrated high -frequency resonance chamber | |
| CN105804833B (en) | Integral type multi-frequency can be changed noise elimination air cleaner | |
| CN215292723U (en) | Straight-through cyclone tube type prefilter | |
| CN217471843U (en) | Noise-reducing dust collector | |
| CN212535889U (en) | Take waterproof dirt-proof car intake pipe assembly | |
| CN221053778U (en) | Adjustable automobile muffler | |
| CN216429803U (en) | Silencer structure for reducing airflow sound of supercharger of automobile engine | |
| CN219622836U (en) | Exhaust silencer of medical oxygenerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |