CN210014434U - Noise eliminator that full premix hanging stove was used and full premix hanging stove - Google Patents
Noise eliminator that full premix hanging stove was used and full premix hanging stove Download PDFInfo
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- CN210014434U CN210014434U CN201920776034.8U CN201920776034U CN210014434U CN 210014434 U CN210014434 U CN 210014434U CN 201920776034 U CN201920776034 U CN 201920776034U CN 210014434 U CN210014434 U CN 210014434U
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- 230000008030 elimination Effects 0.000 claims abstract description 43
- 238000003379 elimination reaction Methods 0.000 claims abstract description 43
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 7
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 230000030279 gene silencing Effects 0.000 description 79
- 239000007789 gas Substances 0.000 description 18
- 239000002131 composite material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Abstract
The utility model discloses a noise eliminator that full premix hanging stove was used and full premix hanging stove, noise eliminator includes the body, and the body is inside to set up the noise elimination passageway of circulation of air, and the both ends of noise elimination passageway run through the left and right lateral wall of body, sets up the noise elimination structure on the noise elimination passageway, and the noise elimination passageway sets gradually first noise elimination passageway and second noise elimination passageway along the air flow direction, and first noise elimination passageway and second noise elimination passageway communicate through the noise elimination chamber; the full-premixing wall-mounted furnace comprises a premixing device, a fan and a combustion chamber, wherein an air outlet of the fan is communicated with the premixing device, the premixing device is provided with a gas inlet, an outlet of the premixing device is communicated with the bottom of the combustion chamber, the full-premixing wall-mounted furnace also comprises a noise eliminator, the noise eliminator is the noise eliminator for the full-premixing wall-mounted furnace, an air inlet of the noise eliminator is communicated with the atmosphere, and an air outlet of the noise eliminator is communicated with an air inlet of the fan. The utility model discloses a noise eliminator carries out the amortization of different levels through compound changeable structure to sound, and the noise cancelling effect is better.
Description
Technical Field
The utility model relates to a noise eliminator especially relates to a noise eliminator and full premix hanging stove that full premix hanging stove was used.
Background
The full-premixing wall-mounted boiler is used as a high-end product in the current industry, a brand new fan different from a conventional boiler is adopted, and when the fan rotates, air is sucked by utilizing negative pressure, and premixing with fuel gas is completed in a cavity of the fan. And then delivered into the combustion chamber via a fan. When the fan is in high rotation speed, it can reach 6000-10000 rad/min, so the noise of the air flow is very big. The noise includes turbulent noise such as air intake, gas intake, air-gas collision, and the like. Through testing the fan noise of the fully-premixed wall-mounted boiler, the noise is mostly concentrated in a low-frequency section, and the sound intensity is about 48 db.
Chinese patent publication No. CN 202835549U discloses a silencing structure of a fully premixed wall-hanging stove, which comprises a silencing pipe, wherein one end of the silencing pipe is communicated with the front end of a gas mixing device, the other end of the silencing pipe is communicated with the outside atmosphere, a plurality of disturbing flow holes are arranged on the silencing pipe, the disturbing flow holes are arranged on the pipe wall of the silencing pipe close to one end of the gas mixing device, the disturbing flow holes are one, and the silencing pipe is of an N-shaped bent pipe structure. In this structure, the mixture of air current and gas air current takes place to go out at the air intake of fan, and the air-fuel mixture gets into the gas mixing device with certain frequency, and this noise cancelling structure can eliminate the noise that the air-fuel mixture got into the natural frequency overlap portion of frequency and hanging stove complete machine to a certain extent, and this noise cancelling structure noise cancelling's ability is poor, can't solve the too big problem of noise that high-speed moving fan caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a noise eliminator that full premix hanging stove was used and full premix hanging stove to on the one hand, to solve current noise eliminator's the poor high-speed moving fan that can not be eliminated of ability of making an uproar that falls and cause the too big technical problem of noise, on the other hand, with the too big technical problem of noise when solving current full premix hanging stove operation.
In order to achieve the above object, the utility model discloses a noise eliminator that full premix hanging stove was used and the concrete technical scheme of full premix hanging stove as follows:
the silencing device for the fully-premixed wall hanging furnace comprises a body, wherein a silencing channel for air circulation is arranged in the body, two ends of the silencing channel penetrate through the left side wall and the right side wall of the body, a silencing structure is arranged on the silencing channel, a first silencing channel and a second silencing channel are sequentially arranged on the silencing channel along the air flowing direction, and the first silencing channel is communicated with the second silencing channel through a silencing cavity.
Furthermore, the left end of the first silencing channel is an air inlet, the right end of the first silencing channel is communicated with the left side of the silencing cavity, the left end of the second silencing channel is communicated with the right side of the silencing cavity, and the right end of the second silencing channel is an air outlet.
Further, the heights of the outlets of the first sound-deadening channel and the inlets of the second sound-deadening channel are different.
Furthermore, the first silencing channel and the second silencing channel are both channels with circular sections, and the axial leads of the first silencing channel and the second silencing channel are parallel to each other.
Furthermore, the silencing cavity is a cuboid cavity, and the sectional area of the first silencing channel and the sectional area of the second silencing channel account for 1/4-1/3 of the area of the side wall of the silencing cavity.
Further, the sound attenuation structure comprises a flow disturbing hole which is arranged on the side wall of the sound attenuation channel.
Furthermore, the noise elimination structure includes first vortex hole, first vortex hole sets up on the lateral wall of first noise elimination passageway, first vortex hole is followed the radial evenly distributed of first noise elimination passageway, the tip of first vortex hole runs through the lateral wall of body.
Furthermore, the noise elimination structure comprises a second flow disturbing hole, and the second flow disturbing hole is uniformly arranged on the side wall of the noise elimination cavity.
Furthermore, the noise elimination structure includes a third spoiler hole, the third spoiler hole is arranged on the side wall of the second noise elimination channel, the third spoiler hole is along the radial uniform distribution of the second noise elimination channel, and the third spoiler hole is a blind hole.
Further, the diameter of the third turbulence hole is small, and the diameter of the third turbulence hole is smaller than 1/4 of the height of the body.
Further, the silencing structure further comprises a silencing material, and the silencing material is arranged on the inner wall of the silencing channel.
The utility model provides a full premix hanging stove, includes premixing device, fan and combustion chamber, the air outlet of fan with premixing device intercommunication, premixing device sets up the gas entry, premixing device's export with the bottom intercommunication of combustion chamber still includes noise eliminator, noise eliminator is foretell full premix hanging stove used noise eliminator, noise eliminator's air inlet and atmosphere intercommunication, noise eliminator's gas outlet with the air intake intercommunication of fan.
The utility model discloses a noise eliminator that full premix hanging stove was used and full premix hanging stove has following advantage:
noise eliminator through the analysis to the spectrogram, obtain the source frequency of noise to confirm noise eliminator's type and concrete structure.
Further, noise eliminator carry out different levels's amortization to sound through compound changeable structure, adopted resonance type noise elimination, expanded type noise elimination and compound amortization principle respectively, make the decay of sound be the trend of gradually becoming weak, can be better reach the noise cancelling effect.
Finally, full premix hanging stove through set up noise eliminator at the fan air intake, noise when can the high-speed operation of greatly reduced fan, simple structure, it is efficient to fall the noise.
Drawings
FIG. 1 is a perspective view of the muffler device of the present invention;
fig. 2 is a sectional view of a part of the muffler device of the present invention.
The reference numbers in the figures illustrate: 1. a body; 11. an air inlet; 12. an air outlet; 2. a first muffling channel; 21. a first baffle hole; 3. an anechoic chamber; 31. a second baffle hole; 4. a second muffling channel; 41. a third orifi.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, the following description is made in detail with reference to the accompanying drawings for the noise elimination device for the fully premixed wall hanging stove and the fully premixed wall hanging stove.
As shown in fig. 1 to 2, the utility model discloses a noise eliminator that full premix hanging stove was used, including the body 1 of cuboid form, the inside noise elimination passageway that sets up the circulation of air of body 1, the left sidewall that noise elimination passageway one end runs through body 1 forms air inlet 11, and the right sidewall that the other end of noise elimination passageway runs through body 1 forms gas outlet 12, sets up noise elimination structure on the inner wall of noise elimination passageway. Air enters the silencing channel from the air inlet 11, is subjected to noise reduction through the silencing structure and then is discharged to the outside of the silencing device through the air outlet 12.
The silencing channel is sequentially provided with a first silencing channel 2 and a second silencing channel 4 along the air flowing direction, the first silencing channel 2 is communicated with the second silencing channel 4 through a silencing cavity 3, the left end of the first silencing channel 2 is an air inlet 11, the right end of the first silencing channel 2 is communicated with the left side of the silencing cavity 3, the left end of the second silencing channel 4 is communicated with the right side of the silencing cavity 3, and the right end of the second silencing channel 4 is an air outlet 12.
The outlet of the first silencing channel 2 and the inlet of the second silencing channel 4 are different in height, namely when the right end of the first silencing channel 2 is communicated with the top of the left side wall of the silencing cavity 3, the left end of the second silencing channel 4 is communicated with the bottom of the right side wall of the silencing cavity 3, or when the right end of the first silencing channel 2 is communicated with the bottom of the left side wall of the silencing cavity 3, the left end of the second silencing channel 4 is communicated with the top of the right side wall of the silencing cavity 3. The structure can ensure that air exists for a long time in the anechoic cavity 3, and the noise reduction effect is better.
Furthermore, the first silencing channel 2 and the second silencing channel 4 are both channels with circular sections, and the axial leads of the first silencing channel 2 and the second silencing channel 4 are parallel to each other.
The noise elimination structure comprises a flow disturbing hole, and the flow disturbing hole is formed in the side wall of the noise elimination channel. The silencing structure further comprises silencing materials, and the silencing materials are arranged on the inner wall of the silencing channel.
The sound-deadening material may be a porous sound-deadening material, such as an organic fiber sound-deadening material, an inorganic foam sound-deadening material, and a foam sound-deadening material, and the sound-deadening material is prior art and will not be described herein again.
The silencing structure comprises first turbulence holes 21, the first turbulence holes 21 are arranged on the side wall of the first silencing passage 2, the first turbulence holes 21 are uniformly distributed along the radial direction of the first silencing passage 2, and the end parts of the first turbulence holes 21 penetrate through the outer side wall of the body 1. When air enters the first sound attenuation channel 2 from the air inlet 11, when the frequency of external noise is the same as the natural frequency of the resonance sound absorption structure, the air column at the hole neck of the first turbulence hole 21 is caused to resonate, and the air column and the neck wall rub violently, so that the sound attenuation effect is achieved, and the sound attenuation effect is a resonance type sound attenuation effect.
The noise reduction cavity 3 realizes noise reduction through composite noise reduction, the noise reduction cavity 3 is a cuboid cavity, and the sectional area of the first noise reduction channel 2 and the sectional area of the second noise reduction channel 4 account for 1/4-1/3 of the side wall area of the noise reduction cavity 3. To reduce noise by reducing the wall thickness of the muffling chamber 3.
The noise elimination structure includes second vortex hole 31, and the even setting in the lateral wall in noise elimination chamber 3 in second vortex hole 31, second vortex hole 31 can be through-hole or blind hole to promote the noise reduction efficiency in noise elimination chamber 3.
The silencing structure comprises third turbulence holes 41, the third turbulence holes 41 are arranged on the side wall of the second silencing passage 4, the third turbulence holes 41 are uniformly distributed along the radial direction of the second silencing passage 4, the end parts of the third turbulence holes 41 extend into the body 1, and the third turbulence holes 41 are blind holes.
Further, the aperture of the third orificing hole 41 is small, and the aperture of the third orificing hole 41 is smaller than 1/4 of the height of the body 1. And the expansion type noise elimination effect is realized in the third noise elimination channel.
The utility model also provides a full premix hanging stove, including premixing device, fan and combustion chamber, the air outlet and the premixing device intercommunication of fan, premixing device set up the gas entry, and premixing device's export and the bottom intercommunication of combustion chamber still include noise eliminator, and noise eliminator is foretell full premix hanging stove's noise eliminator, and noise eliminator's air inlet 11 and atmosphere intercommunication, noise eliminator's gas outlet 12 and the air intake intercommunication of fan.
The premixing device is a venturi tube. The gas inlet of the premixing device is connected with a gas source through a pipeline, and a gas proportional valve is arranged on the pipeline.
The gas source is a gas bottle or a gas pipeline directly connected with a gas pipe.
The noise eliminator finds the source frequency with high noise by analyzing the spectrogram, and then determines the type and the specific structure of the noise eliminator. The composite variable structure is used for silencing sounds at different levels, and the resonance type silencing principle, the expansion type silencing principle and the composite silencing principle are respectively adopted, so that the sound attenuation tends to become weaker gradually, and the silencing effect can be better achieved. This full premix hanging stove is through setting up noise eliminator at the fan air intake, noise when can the high-speed operation of greatly reduced fan, simple structure, it is high to fall the noise efficiency.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.
Claims (12)
1. The utility model provides a noise eliminator that full premix hanging stove was used, its characterized in that includes body (1), the inside noise elimination passageway that sets up the circulation of air of body (1), the both ends of noise elimination passageway run through the left and right lateral wall of body (1), set up noise elimination structure on the noise elimination passageway, the noise elimination passageway sets gradually first noise elimination passageway (2) and second noise elimination passageway (4) along the air flow direction, first noise elimination passageway (2) with second noise elimination passageway (4) are through noise elimination chamber (3) intercommunication.
2. The muffling device for a full-premix wall-hanging furnace according to claim 1, wherein the left end of the first muffling channel (2) is an air inlet (11), the right end of the first muffling channel (2) is communicated with the left side of the muffling chamber (3), the left end of the second muffling channel (4) is communicated with the right side of the muffling chamber (3), and the right end of the second muffling channel (4) is an air outlet (12).
3. The muffling device for a full-premix wall-hanging furnace according to claim 2, wherein the outlet of the first muffling channel (2) and the inlet of the second muffling channel (4) have different heights.
4. The muffling device for a full-premix wall-hanging furnace according to claim 2, wherein the first muffling channel (2) and the second muffling channel (4) are both circular channels, and the axial lines of the first muffling channel (2) and the second muffling channel (4) are parallel to each other.
5. The muffling device for the full-premix wall hanging furnace according to claim 1, wherein the muffling chamber (3) is a rectangular parallelepiped cavity, and the cross-sectional area of the first muffling channel (2) and the cross-sectional area of the second muffling channel (4) occupy 1/4 to 1/3 of the area of the side wall of the muffling chamber (3).
6. The muffling device for a full-premix wall-hanging furnace according to claim 1, wherein the muffling structure comprises a flow-disturbing hole, and the flow-disturbing hole is provided in a side wall of the muffling channel.
7. The muffling device for a full-premix wall hanging furnace according to claim 6, wherein the muffling structure comprises first flow-disturbing holes (21), the first flow-disturbing holes (21) are arranged on the side wall of the first muffling channel (2), the first flow-disturbing holes (21) are uniformly distributed in the radial direction of the first muffling channel (2), and the end parts of the first flow-disturbing holes (21) penetrate through the outer side wall of the body (1).
8. The muffling device for the full-premix wall hanging furnace according to claim 6, wherein the muffling structure comprises second flow-disturbing holes (31), and the second flow-disturbing holes (31) are uniformly arranged on the side wall of the muffling chamber (3).
9. The muffling device for a full-premix wall hanging furnace according to claim 6, wherein the muffling structure comprises third flow-disturbing holes (41), the third flow-disturbing holes (41) are arranged on the side wall of the second muffling channel (4), the third flow-disturbing holes (41) are uniformly distributed in the radial direction of the second muffling channel (4), and the third flow-disturbing holes (41) are blind holes.
10. The muffling device for a full-premix wall hanging furnace according to claim 9, wherein the third baffle hole (41) has a small aperture, and the aperture of the third baffle hole (41) is smaller than 1/4 of the height of the body (1).
11. The muffling device for a full-premix wall-hanging furnace according to claim 6, wherein the muffling structure further comprises a muffling material, and the muffling material is provided on an inner wall of the muffling channel.
12. A full premix hanging stove, includes premixing device, fan and combustion chamber, the air outlet of fan with premixing device intercommunication, premixing device sets up the gas entry, premixing device's export with the bottom of combustion chamber intercommunication, characterized by, still includes noise eliminator, noise eliminator be the noise eliminator that the hanging stove was used in full premix of any claim 1-11, noise eliminator's air inlet (11) communicate with the atmosphere, noise eliminator's gas outlet (12) with the air intake of fan communicates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920776034.8U CN210014434U (en) | 2019-05-27 | 2019-05-27 | Noise eliminator that full premix hanging stove was used and full premix hanging stove |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920776034.8U CN210014434U (en) | 2019-05-27 | 2019-05-27 | Noise eliminator that full premix hanging stove was used and full premix hanging stove |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594930A (en) * | 2020-10-17 | 2021-04-02 | 中山市羽顺热能技术设备有限公司 | Air filtering device of full-premixing heating wall-mounted boiler |
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- 2019-05-27 CN CN201920776034.8U patent/CN210014434U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594930A (en) * | 2020-10-17 | 2021-04-02 | 中山市羽顺热能技术设备有限公司 | Air filtering device of full-premixing heating wall-mounted boiler |
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