CN205559037U - A kuppe for silencer - Google Patents
A kuppe for silencer Download PDFInfo
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- CN205559037U CN205559037U CN201620405376.5U CN201620405376U CN205559037U CN 205559037 U CN205559037 U CN 205559037U CN 201620405376 U CN201620405376 U CN 201620405376U CN 205559037 U CN205559037 U CN 205559037U
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- kuppe
- acoustic filter
- opening
- epipleural
- noise
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Abstract
The utility model discloses a kuppe for silencer, the kuppe is used for covering the waste gas import in silencer expansion room, just the kuppe is silencer resonant chamber side open -ended cover body structure on one day, the kuppe avoids engine waste gas to have some setbacks in the indoor flow of expansion the lead direction of resonant chamber of air current, guarantees to reduce the exhaust tesistance, reduces the engine power loss, and the kuppe plays the guide effect to the sound wave for the resonance efficiency and the intensity of sound wave all improve to some extent, guarantee that noise suppression effect is better, have improved noise elimination intensity greatly, do benefit to and reduce the exhaust noise, avoid noise pollution.
Description
Technical field
This utility model relates to the waste gas flow guiding device of electromotor, is specifically related to a kind of kuppe for acoustic filter.
Background technology
nullElectromotor makes the interior mechanical energy that can be converted into of fuel oil externally do work by non-combusted fuels,Fuel oil can produce engine exhaust after burning and be drained into air,And acoustic filter generally need to be set during discharge with the noise produced during reducing due to engine exhaust emission,And according to different frequency of sound waves,Adoptable different acoustic filter processes noise,Such as dissipative muffler、Reactive muffler or composite muffler etc.，And in prior art，Generally use the acoustic filter of composite construction to the height in the middle of noise、Neutralize low frequency to process，To and in、Low-frequency sound wave is processed by the combination of expansion chambers and resonant chamber，For coordinating the volume of acoustic filter and adapting to multi-cylinder exhaust structure，The generally circumferential side wall at tubular acoustic filter offers air inlet，It is inserted radially into exhaustor from acoustic filter，Engine exhaust is made successively to carry out multistage noise reduction by expansion chambers and exhaust air chamber，And the temperature of the engine exhaust owing to discharging from engine cylinder-body is the highest，Air-flow enters acoustic filter from air inlet and directly crashes into the cylinder inboard wall of acoustic filter，Easily occur that acoustic filter local temperature is higher，Easily cause scald，Simultaneously，The engine exhaust airflow entered in expansion chambers has some setbacks，Substantial amounts of eddy current is produced in expansion cavity，Make exhaust resistance bigger，Add the power attenuation of electromotor，It is unfavorable for that engine efficiency improves，And soundproof effect is poor，Especially it is unfavorable for resonant silencing.
Therefore, for solving problem above, need a kind of kuppe for acoustic filter, it is possible to make off-gas flows flow in acoustic filter more smooth and easy, reduce exhaust resistance, reduce engine power loss, meanwhile, binding resonant room, there is preferable resonance effect, it is beneficial to reduce exhaust noise, it is to avoid noise pollution, it is ensured that use environmental protection.
Utility model content
In view of this, the purpose of this utility model is to overcome defect of the prior art, off-gas flows can be made to flow in acoustic filter more smooth and easy, reduce exhaust resistance, reduce engine power loss, simultaneously, binding resonant room, has preferable resonance effect, is beneficial to reduce exhaust noise, avoid noise pollution, it is ensured that use environmental protection.
Kuppe for acoustic filter of the present utility model, described kuppe is for covering in the exhaust gas inlet of acoustic filter expansion chambers, and described kuppe is one towards the cover body structure of acoustic filter resonant chamber side opening；Kuppe by band side opening, the engine exhaust entered in expansion chambers can be carried out water conservancy diversion, the air-flow avoiding engine exhaust directly acts on the sidewall of kuppe, simultaneously, air-flow is guided the direction of resonant chamber by kuppe, avoid engine exhaust to have some setbacks at expansion indoor moveable, it is ensured that to reduce exhaust resistance, reduce engine power loss；And sound wave is play the guiding role by kuppe so that resonance efficiency and the intensity of sound wave all increase, it is ensured that soundproof effect is more preferable, substantially increases noise elimination intensity, is beneficial to reduce exhaust noise, it is to avoid noise pollution.
Further, described kuppe gradually expands to opening size；By kuppe is set to the structure gradually expanded to opening size, the air-flow being beneficial to enter kuppe from bottom penetrates in the way of dissipating, it is to avoid the air-flow after diversed is limited with the active area of resonant chamber inlet end.
Further, the ratio of the width of the opening of described kuppe and height is 1.2-2；Opening 5 size of kuppe 1 is rationally set, is beneficial to form vibration at resonant chamber 2 inlet end, improves acoustic energy and be converted to heat energy by friction, improve sound deadening capacity further, reduce noise.
Further, described kuppe is surrounded by epipleural, back side panel and two left side plates, and described epipleural is gradually inclined upwardly to opening；Two left side plates are the most outward-dipping to opening；Dissipate and be beneficial to control along cylinder radial dilatation, the epipleural of inclination and two left side plates airintake direction and the speed of air-flow after engine exhaust water conservancy diversion, be beneficial to improve resonance characteristics, improve acoustical absorptivity further.
Further, rounding off between the epipleural of described kuppe, back side panel and two left side plates；Avoiding engine exhaust to form disorder in kuppe 1, water conservancy diversion effect is preferable, is beneficial to ensure the control of air velocity, thus obtains stronger resonance effect, it is ensured that noise elimination intensity.
Further, described back side panel bottom is downwardly protrude to form the arcuate structure adapted with silencer cylinder inwall；Outside flange it is provided with bottom described kuppe
Further, the angle of inclination of the epipleural of described kuppe is 5 °-10 °；The angle of inclination of two left side plates is 5 °-10 °, and beneficially air-flow has the optimal angle entering resonant chamber, it is ensured that smoothness and the resonance effect of air-flow are best so that the power attenuation of electromotor is little and sound deadening capacity is high.
The beneficial effects of the utility model are: a kind of kuppe for acoustic filter disclosed in this utility model, the setting of kuppe, the engine exhaust entered in expansion chambers can be carried out water conservancy diversion, the air-flow avoiding engine exhaust directly acts on the sidewall of kuppe, meanwhile, air-flow is guided the direction of resonant chamber by kuppe, it is to avoid engine exhaust has some setbacks at expansion indoor moveable, ensure to reduce exhaust resistance, reduce engine power loss；And sound wave is play the guiding role by kuppe so that resonance efficiency and the intensity of sound wave all increase, it is ensured that soundproof effect is more preferable, substantially increases noise elimination intensity, is beneficial to reduce exhaust noise, it is to avoid noise pollution.
Accompanying drawing explanation
With embodiment, this utility model is further described below in conjunction with the accompanying drawings:
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation after this utility model is installed；
Fig. 3 is rearview of the present utility model；
Fig. 4 is top view of the present utility model.
Detailed description of the invention
Fig. 1 is structural representation of the present utility model, Fig. 2 is the structural representation after this utility model is installed, Fig. 3 is rearview of the present utility model, Fig. 4 is top view of the present utility model, as shown in the figure, the kuppe 1 for acoustic filter in the present embodiment, described kuppe 1 is for covering in the exhaust gas inlet of acoustic filter expansion chambers 2, and described kuppe 1 is one towards the cover body structure of acoustic filter resonant chamber side opening 3；By the kuppe 1 of band side opening 3, the engine exhaust entered in expansion chambers 2 can be carried out water conservancy diversion, the air-flow avoiding engine exhaust directly acts on the sidewall of kuppe 1, simultaneously, air-flow is guided the direction of resonant chamber by kuppe 1, avoid engine exhaust to flow in expansion chambers 2 to have some setbacks, it is ensured that reduce exhaust resistance, reduce engine power loss；And sound wave is play the guiding role by kuppe 1 so that resonance efficiency and the intensity of sound wave all increase, it is ensured that soundproof effect is more preferable, substantially increases noise elimination intensity, is beneficial to reduce exhaust noise, it is to avoid noise pollution.
In the present embodiment, described kuppe 1 gradually expands to opening 3 end size；By kuppe 1 is set to the structure gradually expanded to opening 3 end size, the air-flow being beneficial to enter kuppe 1 from bottom penetrates in the way of dissipating, it is to avoid the air-flow after diversed is limited with the active area of resonant chamber inlet end.
In the present embodiment, described kuppe is surrounded by epipleural 5, back side panel 6 and two left side plates 7, and described epipleural is gradually inclined upwardly to opening；Two left side plates are the most outward-dipping to opening；Two left side plates represent and include left plate and right plate (left plate and right plate are all designated as 7 expressions), outwards represent the kuppe direction away from front-rear center line (i.e. longitudinal centre line), described two left side plates 7 are oppositely arranged and gradually tilt to both sides to opening, dissipate and along cylinder 1 radial dilatation after being beneficial to engine exhaust water conservancy diversion, ensure to control airintake direction and the speed of air-flow, it is beneficial to improve resonance characteristics, improves acoustical absorptivity further.
In the present embodiment, the width of the opening 3 of described kuppe 1 and the ratio of height are 1.2-2；Being preferably 1.6, the open height of stream cover is the vertical height bottom left plate or right plate to epipleural forward position, rationally arranges opening 3 size of kuppe 1, it is beneficial to form vibration at resonant chamber 4 inlet end, improve acoustic energy and be converted to heat energy by friction, improve sound deadening capacity further, reduce noise.
In the present embodiment, the epipleural 5 of described kuppe 1, rounding off between back side panel 6 and two left side plates；Avoiding engine exhaust to form disorder in kuppe 1, water conservancy diversion effect is preferable, is beneficial to ensure the control of air velocity, thus obtains stronger resonance effect, it is ensured that noise elimination intensity.
In the present embodiment, described back side panel bottom is downwardly protrude to form the arcuate structure adapted with silencer cylinder inwall；Outside flange it is provided with bottom described kuppe；Easy for installation, solderable or be bonded and fixed to silencer cylinder inwall, it is ensured that bottom is prone to seal and fixing-stable, it is ensured that water conservancy diversion effect.
In the present embodiment, the angle of inclination of the epipleural of described kuppe is 5 °-10 °；The angle of inclination of two left side plates is 5 °-10 °；All having preferably 8 °, beneficially air-flow has the optimal angle entering resonant chamber 4, it is ensured that smoothness and the resonance effect of air-flow are best so that the power attenuation of electromotor is little and sound deadening capacity is high.
Finally illustrate is, above example is only in order to illustrate the technical solution of the utility model and unrestricted, although this utility model being described in detail with reference to preferred embodiment, it will be understood by those within the art that, the technical solution of the utility model can be modified or equivalent, without deviating from objective and the scope of technical solutions of the utility model, it all should be contained in the middle of right of the present utility model.
Claims (7)
1. the kuppe for acoustic filter, it is characterised in that: described kuppe is used for covering in acoustic filter and expands
The exhaust gas inlet of room, and described kuppe is one towards the cover body structure of acoustic filter resonant chamber side opening.
Kuppe for acoustic filter the most according to claim 1, it is characterised in that: described kuppe
Gradually expand to opening size.
Kuppe for acoustic filter the most according to claim 1, it is characterised in that: described kuppe
The width of opening and the ratio of height be 1.2-2.
Kuppe for acoustic filter the most according to claim 1, it is characterised in that: described kuppe
Being surrounded by epipleural, back side panel and two left side plates, described epipleural is gradually inclined upwardly to opening；Two
Left side plate is the most outward-dipping to opening.
Kuppe for acoustic filter the most according to claim 4, it is characterised in that: described kuppe
Epipleural, back side panel and two left side plates between rounding off.
Kuppe for acoustic filter the most according to claim 4, it is characterised in that: described back side panel
Bottom is downwardly protrude to form the arcuate structure adapted with silencer cylinder inwall；Arrange bottom described kuppe
There is outside flange.
Kuppe for acoustic filter the most according to claim 4, it is characterised in that: described kuppe
The angle of inclination of epipleural be 5 °-10 °；The angle of inclination of two left side plates is 5 °-10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620405376.5U CN205559037U (en) | 2016-05-06 | 2016-05-06 | A kuppe for silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620405376.5U CN205559037U (en) | 2016-05-06 | 2016-05-06 | A kuppe for silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205559037U true CN205559037U (en) | 2016-09-07 |
Family
ID=56803617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620405376.5U Active CN205559037U (en) | 2016-05-06 | 2016-05-06 | A kuppe for silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205559037U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109588014A (en) * | 2018-12-17 | 2019-04-05 | 北京无线电测量研究所 | A kind of air-cooled flow directing insert and air-cooled plug-in type cabinet |
-
2016
- 2016-05-06 CN CN201620405376.5U patent/CN205559037U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109588014A (en) * | 2018-12-17 | 2019-04-05 | 北京无线电测量研究所 | A kind of air-cooled flow directing insert and air-cooled plug-in type cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |