CN207687065U - Silencing apparatus and sweeping machine - Google Patents
Silencing apparatus and sweeping machine Download PDFInfo
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- CN207687065U CN207687065U CN201721616008.6U CN201721616008U CN207687065U CN 207687065 U CN207687065 U CN 207687065U CN 201721616008 U CN201721616008 U CN 201721616008U CN 207687065 U CN207687065 U CN 207687065U
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- noise elimination
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- noise
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Abstract
The utility model is related to a kind of silencing apparatus and sweeping machines, wherein, silencing apparatus includes shell and the first noise elimination structure, shell is equipped with air inlet and air outlet, first noise elimination structure is set in the channel formed between air inlet and air outlet, first noise elimination structure includes the first group of noise elimination cavity and second group of noise elimination cavity of communicating passage, by open communication between adjacent two chamber in first group of noise elimination cavity, is connected to by porous plate between adjacent two chamber in second group of noise elimination cavity.The area of first group of noise elimination cavity split shed of the utility model and the sectional area of chamber have preset proportionate relationship, cause reflection and the interference of sound wave to be eliminated the noise using the expansion of area of section, contraction, can preferably eliminate the noise to intermediate frequency and low-frequency sound wave；Second group of noise elimination cavity utilizes the combination of porous plate and chamber, can eliminate the noise to intermediate frequency and high frequency sound wave；Therefore, the utility model embodiment can eliminate the noise to high, medium and low frequency range sound wave, suitable for the field for requiring wideband to eliminate the noise.
Description
Technical field
The utility model is related to engineering machinery field, more particularly to a kind of silencing apparatus and sweeping machine.
Background technology
Sweeping machine is mostly in the morning or night operation, work noise will necessarily generate the life of operator and surrounding resident
Certain interference, and fan noise is its main sound source, reduces fan noise, is had for promotion product competitiveness very great
Realistic meaning.It is one of the effective scheme for reducing fan noise by installing silencer in fan outlet.Silencer is eliminated the noise by it
Mechanism can be divided into dissipative muffler, reactive muffler and impedance muffler etc..The noise-cancelling theory of dissipative muffler is to utilize
Sound-absorbing material in pipeline, the partly absorbing acoustic energy along pipe transmmision.Reactive muffler is to utilize variously-shaped, size pipe
Road and perforated pipe resonance sound-absorbing structure etc. cause sound wave impedance mismatching in systems, make sound wave in pipeline and resonant cavity back and forth
Reflection, consume, to achieve the purpose that noise elimination.Impedance muffler is to combine dissipative muffler and reactive muffler
Come, to realize the purpose of wideband noise elimination.
Fans silencer mostly uses resistive or single noise elimination structure at present, for this broadband noise noise elimination effect of wind turbine
Difference, and due to the special operating mode of sweeping machine, more with dust in fan outlet air, resistance noise reduction structure is easy stifled
Plug, and fan outlet humidity is bigger than normal, and after working long hours, noise elimination effect tends to decrease, and the service life of silencer reduces.It is promoted
Fans silencer noise elimination effect and become those skilled in the art's technical problem in the urgent need to address convenient for cleaning.
Utility model content
The purpose of this utility model is a kind of silencing apparatus of proposition and sweeping machine, wherein silencing apparatus can solve wideband
The problem of silencing noise effect difference.
To achieve the above object, the utility model provides a kind of silencing apparatus comprising shell and the first noise elimination structure,
Shell is equipped with air inlet and air outlet, and the first noise elimination structure is set in the channel formed between air inlet and air outlet, and first disappears
Acoustic form includes the first group of noise elimination cavity and second group of noise elimination cavity of communicating passage, is led between adjacent two chamber in first group of noise elimination cavity
Open communication is crossed, is connected to by porous plate between adjacent two chamber in second group of noise elimination cavity.
One preferably or in alternative embodiment, first group of noise elimination cavity includes the first chamber and the second chamber, and the first chamber is equipped with first
Opening and the second opening, the first open communication channel, second the second chamber of open communication.
One preferably or in alternative embodiment, the area of the area of the first opening and the second opening is the section of the first chamber
Long-pending 1/4~1/3.
One preferably or in alternative embodiment, first group of noise elimination cavity includes third chamber, and third chamber is equipped with the second chamber of connection
Third is open.
One preferably or in alternative embodiment, the area of third opening is the 1/3~1/2 of the sectional area of the second chamber.
One preferably or in alternative embodiment, first group of noise elimination cavity includes two third chambers, and two third chambers are located at
The both sides of second chamber.
One preferably or in alternative embodiment, second group of noise elimination cavity includes the 4th chamber and the 5th chamber, and the 4th chamber is equipped with first
Porous plate and the second porous plate, the first porous plate communicating passage, the second porous plate are connected to the 5th chamber.
One preferably or in alternative embodiment, the volume of the 4th chamber is at least twice of the volume of the 5th chamber.
One preferably or in alternative embodiment, the first noise elimination structure includes two second group of noise elimination cavities, and two second group disappears
The operatic tunes is located at the both sides of first group of noise elimination cavity.
One preferably or in alternative embodiment, the first noise elimination structure includes managing, the first end communicating passage of pipe, and the second of pipe
End seal is closed.
One preferably or in alternative embodiment, pipe is arranged in first group of noise elimination cavity and/or second group of noise elimination cavity.
One preferably or in alternative embodiment, the first noise elimination structure is managed including at least two, the length difference or phase of each pipe
Together.
One preferably or in alternative embodiment, the side that the first noise elimination structure is connected to channel is set to the gas that air inlet introduces
Flow the side in direction.
One preferably or in alternative embodiment, silencing apparatus includes dedusting dehumidification structure, and dedusting dehumidification structure is set to channel
Interior and communicating passage.
One preferably or in alternative embodiment, the gas introduced to air inlet is met in the side that dedusting dehumidification structure is connected to channel
Flow direction.
One preferably or in alternative embodiment, dedusting dehumidification structure includes chamber shell, and chamber shell includes meeting to air inlet to be arranged
Third porous plate, chamber shell is interior to be equipped with dust-catching board and water-absorbent material.
One preferably or in alternative embodiment, silencing apparatus includes the second noise elimination structure, and the second noise elimination structure is set to channel
It is interior, have pre-determined distance to form expansion cavity between the second noise elimination structure and the first noise elimination structure.
One preferably or in alternative embodiment, the second noise elimination structure relative to the first noise elimination structure close to air outlet, first
Noise elimination structure is relative to the second noise elimination structure close to air inlet.
One preferably or in alternative embodiment, the second noise elimination structure is resistance noise reduction structure.
To achieve the above object, the utility model provides a kind of sweeping machine comprising above-mentioned silencing apparatus.
One preferably or in alternative embodiment, road sweeper includes centrifugal blower, and silencing apparatus is set to the air draft of centrifugal blower
End.
Based on the above-mentioned technical proposal, the utility model at least has the advantages that：
The first noise elimination structure is arranged in the utility model embodiment in the channel of shell, and the first noise elimination structure includes that connection is logical
First group of noise elimination cavity and second group of noise elimination cavity in road；Pass through open communication, opening between adjacent two chamber in first group of noise elimination cavity
Area and the sectional area of chamber there is preset proportionate relationship, using the expansion of area of section, shrink cause the reflection of sound wave with
Interfere to eliminate the noise, can preferably eliminate the noise to intermediate frequency and low-frequency sound wave；Adjacent two chamber in second group of noise elimination cavity it
Between be connected to by porous plate, using the combination of porous plate and chamber, can eliminate the noise to intermediate frequency and high frequency sound wave；Therefore, this reality
It can be eliminated the noise to high, medium and low frequency range sound wave with new embodiment, suitable for the field for requiring wideband to eliminate the noise.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings：
Fig. 1 is the main view and partial schematic sectional view that the utility model implements the silencing apparatus provided；
Fig. 2 is the schematic rear view that the utility model implements the silencing apparatus provided；
Fig. 3 is the A-A schematic cross-sectional views of Fig. 1；
Fig. 4 is the schematic diagram after the first noise elimination structure that the utility model is implemented to provide is tilted a certain angle；
Fig. 5 is the B-B schematic cross-sectional views of Fig. 4；
Fig. 6 is the schematic diagram that the utility model implements the dedusting dehumidification structure provided；
Fig. 7 is the C-C schematic cross-sectional views of Fig. 6.
Attached figure label：
1- shells；11- air inlets；12- air outlets；The sides 13- installing port；
The first noise elimination structures of 2-；
First group of noise elimination cavity of 21-；The first chambers of 211-；The second chambers of 212-；213- first is open；214- second is open；215-
Third chamber；216- thirds are open；
Second group of noise elimination cavity of 22-；The 4th chambers of 221-；The 5th chambers of 222-；The first porous plates of 223-；The second porous plates of 224-；
23- is managed；
3- dedusting dehumidification structures；31- chamber shells；32- third porous plates；33- dust-catching boards；34- water-absorbent materials；
The second noise elimination structures of 4-；
5- expansion cavities.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, the technical solution in embodiment is carried out it is clear, complete
Ground describes.Obviously, described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.
Based on the embodiments of the present invention, institute that those of ordinary skill in the art are obtained without creative efforts
There is other embodiment, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indicates or imply and is signified
Device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to this practicality
The limitation of novel protected range.
As shown in Figure 1, Figure 2, Figure 3 shows, the silencing apparatus provided for the utility model embodiment comprising shell 1 and first
Noise elimination structure 2, shell 1 are equipped with air inlet 11 and air outlet 12, channel are formed between air inlet 11 and air outlet 12 in shell 1,
First noise elimination structure 2 is set in channel.First group noise elimination cavity 21 and second group noise elimination of first noise elimination structure 2 including communicating passage
Chamber 22.Have in advance by open communication, the area of opening and the sectional area of chamber between adjacent two chamber in first group of noise elimination cavity 21
If proportionate relationship, using the expansion of area of section, shrink cause reflection and the interference of sound wave to be eliminated the noise, can be preferable
It eliminates the noise to intermediate frequency and low-frequency sound wave.It is connected to by porous plate between adjacent two chamber in second group of noise elimination cavity 22, using more
The combination of orifice plate and chamber can eliminate the noise to intermediate frequency and high frequency sound wave.
Therefore, the utility model embodiment can eliminate the noise to high, medium and low frequency range sound wave, suitable for requiring wideband to disappear
The field of sound.
The silencing apparatus that the utility model embodiment provides has full frequency band noise elimination effect, and the utility model embodiment carries
Supply the first noise elimination structure 2 be combined type reactive muffling structure, compared with the existing technology in resistance noise reduction structure have resistance to height
Temperature, moisture resistant, are not easy to plug, feature easy to clean.Therefore, be suitable for the wind turbine of sweeping machine carry out noise reduction (sweeping machine
The noise frequency range of wind turbine is wider).
The silencing apparatus that the utility model embodiment provides is the wideband silencing apparatus of absorbable different frequency range noise, and
It can be described in detail with reference to embodiment according to combining form there are many different work operating modes.
As shown in figure 5, first group of noise elimination cavity 21 in the utility model embodiment may include the first chamber 211 and the second chamber
212, the first chamber 211 is equipped with the first opening 213 and the second opening 214, the first 213 communicating passages of opening, 214 connection of the second opening
Second chamber 212.First chamber 211 mainly eliminates Middle and low frequency noise.
Optionally, the area of the first opening 213 and the area of the second opening 214 are the 1/4 of the sectional area of the first chamber 211
~1/3.Preferably, the area equation of the area of the first opening 213 and the second opening 214.
In above-described embodiment, first group of noise elimination cavity 21 can also include third chamber 215, and third chamber 215 is equipped with connection second
The third opening 216 of chamber 212.
Second chamber 211 and third chamber 215 are mainly used for eliminating the low-frequency noise of special frequency channel.
One preferably or in alternative embodiment, first group of noise elimination cavity 21 may include two third chambers 215, two third chambers
215 are located at the both sides of the second chamber 212.
Optionally, the area of third opening 216 is the 1/3~1/2 of the sectional area of the second chamber 212.
Further, the area of the third opening 216 of two third chambers 215 may be the same or different, preferably two
The area of the third opening 216 of third chamber 215 is different, and occurrence can be calculated according to the sound wave frequency range eliminated is wished.
Second group of noise elimination cavity 22 in the utility model embodiment may include the 4th chamber 221 and the 5th chamber 222, the 4th chamber
221 are equipped with the first porous plate 223 and the second porous plate 224,223 communicating passage of the first porous plate, the second porous plate 224 connection the
Five chambers 222.
Optionally, the volume of the 4th chamber 221 is at least twice of the volume of the 5th chamber 222.
In above-described embodiment, the punching rate of the first porous plate 223 and the second porous plate 224 can be different.
One preferably or in alternative embodiment, the first noise elimination structure 2 may include two second group of noise elimination cavities 22, two the
Two groups of noise elimination cavities 22 can be located at the both sides (as shown in Figure 4) of first group of noise elimination cavity 21.
The first noise elimination structure 2 in the utility model embodiment can also include pipe 23, the first end communicating passage of pipe 23,
The second end of pipe 23 is closed.
One preferably or in alternative embodiment, pipe 23 can be arranged in first group of noise elimination cavity 21 and/or second group of noise elimination cavity
In 22.Shown in Fig. 5, pipe 23 is arranged in second group of noise elimination cavity 22.
Optionally, the first noise elimination structure 2 may include at least two pipes 23, and the length of each pipe 23 can be different or can also
Identical, the length of each pipe 23 can be calculated according to different characteristic frequency.
The first noise elimination structure 2 in the various embodiments described above is combined type reactive muffling structure comprising passes through open communication
First group of noise elimination cavity 21, by porous plate be connected to second group of noise elimination cavity 22 and pipe 23, can effectively reduce high frequency, in
Frequently, low frequency, wind turbine fundamental frequency and its frequency multiplication noise etc..
Cause crushing to avoid the air-flow that air inlet 11 introduces from flowing directly into the first noise elimination structure 2, the first noise elimination structure 2 with
The side of channel connection is set to the side for the airflow direction that air inlet 11 introduces.Specifically, the first opening 213 and the first porous plate
223 are set to the side for the airflow direction that air inlet 11 introduces.
The silencing apparatus that the utility model embodiment provides can also include dedusting dehumidification structure 3, and dedusting dehumidification structure 3 is set
In in channel and communicating passage, the dust and moisture in silencing apparatus interior air-flow can be effectively reduced, making for silencing apparatus is promoted
With service life and noise reduction.
In above-described embodiment, the airflow direction introduced to air inlet 11 is met in the side that dedusting dehumidification structure 3 is connected to channel
Setting, so that air-flow flows directly into dedusting dehumidification structure 3, the air-flow introduced by air inlet 11 is dusted dehumidifying first, and
It can to a certain extent be eliminated the noise by dedusting dehumidification structure 3, then further be eliminated the noise by the first noise elimination structure 2, energy
Enough improve the service life and noise elimination effect of the first noise elimination structure 2.
One preferably or in alternative embodiment, as shown in Figure 6, Figure 7, dedusting dehumidification structure 3 may include chamber shell 31, chamber shell
31 include meeting the third porous plate 32 being arranged to air inlet 11, and dust-catching board 33 and water-absorbent material 34 are equipped in chamber shell 31.By setting
Dust-catching board 33 and water-absorbent material 34 are set, can effectively reduce dust and moisture in silencing apparatus, and eliminate the noise with preferable
Effect extends the service life of silencing apparatus.
Optionally, the frontal projected area of chamber shell 31 can be more than the sectional area of air inlet 11.Preferably, the positive throwing of chamber shell 31
Shadow area is 1.3~1.6 times of the sectional area of air inlet 11.The thickness of chamber shell 31 should be less than the thickness in channel, the thickness of chamber shell 31
Degree is preferably the 1/4~1/3 of the thickness in channel.
Optionally, third porous plate 32 has certain angle with horizontal plane, and preferably 45 °~65 ° of angular range, this section is removed
Dirt effect is optimal, and has certain noise reduction.Aperture on third porous plate 32 can be 1mm~2mm, and punching rate can
Think 5%~8%.
Above-mentioned dedusting dehumidification structure 3 can not only effectively reduce dust and moisture, and there is preferable noise elimination effect, extension to disappear
The service life of acoustic device, and it is simple in structure, be easily installed.
The silencing apparatus that the utility model embodiment provides can also include the second noise elimination structure 4, and the second noise elimination structure 4 is set
In in channel, have pre-determined distance to form expansion cavity 5 between the second noise elimination structure 4 and the first noise elimination structure 2.
Optionally, expansion cavity 5 is arranged between air inlet 11 and air outlet 12, is the cavity of a cuboid, expansion cavity 5
Sectional area is more than twice or more of the sectional area of sectional area/air outlet 12 of air inlet 11, preferably the 3 of 11 sectional area of air inlet
~6 times.
Above-described embodiment makes to be formed expansion cavity 5, divergence ratio and 11 area of air inlet in shell 1 with corresponding ratio pass
System, under the premise of not increasing other noise elimination structures, can also effectively reduce noise.
In above-described embodiment, relative to the first noise elimination structure 2 close to air outlet 12, first eliminates the noise ties the second noise elimination structure 4
Structure 2 is relative to the second noise elimination structure 4 close to air inlet 11.
Optionally, the second noise elimination structure 4 is resistance noise reduction structure.Resistive noise-reducing structure is located at air outlet 12, and can be with
It is set in shell 1 using detachable connection mode.
Such as：Second noise elimination structure 4 can specifically include multiple bloops and snap-in structure, and multiple bloops can pass through
Snap-in structure is installed on the engaging slot of 1 bottom plate of shell, and the quantity of bloop can be changed according to the actual size in shell 1
Become, preferably three.
The first noise elimination structure 2 in a specific embodiment of silencing apparatus is set forth below, dedusting dehumidification structure 3 and second is eliminated the noise
The specific installation site of structure 4.
Air inlet 11 is arranged in the foreboard of shell 1, and air inlet 11 is preferably disposed on the side of foreboard upper end.The backboard of shell 1
Downside be arranged air outlet 12.The sectional area of air outlet 12 is preferably 2~2.5 times of the sectional area of air inlet 11.
The side plate adjacent with foreboard of shell 1 is equipped with the side installing port 13 for installing the first noise elimination structure 2, side installation
Mouth 13 is contour with air inlet 11, and side installing port 13 is located remotely from the side plate of air inlet 11, and arrangement first can be facilitated to eliminate the noise
Structure 2, and this kind of layout type influences minimum to its air circulation.
Optionally, the first noise elimination structure 2 is parallel to air inlet 11 and is connect with side installing port 13.Dedusting dehumidification structure 3 is set
It is placed on the backboard of shell 1, and face air inlet 11.Second noise elimination structure 4 is installed on the bottom plate of shell 1 and is located at air outlet
At 12.
The utility model embodiment additionally provides a kind of road sweeper comprising above-mentioned silencing apparatus.
Road sweeper in above-described embodiment includes centrifugal blower, and silencing apparatus provided in this embodiment is set to centrifugal blower
Air outlet.
In the description of the present invention, it should be understood that being limited using the words such as " first ", " second ", " third "
Determine parts, it is only for convenient for being distinguished to above-mentioned parts, there is no Stated otherwise such as, there is no special for above-mentioned word
Meaning, therefore should not be understood as the limitation to scope of protection of the utility model.
Finally it should be noted that:Above example is only to illustrate the technical solution of the utility model rather than limits it
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：It can still modify to specific embodiment of the present utility model or some technical characteristics are equally replaced
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (21)
1. a kind of silencing apparatus, it is characterised in that：Including shell (1) and the first noise elimination structure (2), the shell (1) be equipped with into
Air port (11) and air outlet (12), first noise elimination structure (2) be set to the air inlet (11) and the air outlet (12) it
Between in the channel that is formed, first noise elimination structure (2) include be connected to the channel first group of noise elimination cavity (21) and second group
Noise elimination cavity (22) passes through open communication, second group of noise elimination cavity between adjacent two chamber in first group of noise elimination cavity (21)
(22) it is connected to by porous plate between adjacent two chamber in.
2. silencing apparatus as described in claim 1, it is characterised in that：First group of noise elimination cavity (21) includes the first chamber
(211) and the second chamber (212), first chamber (211) are equipped with the first opening (213) and the second opening (214), and described first opens
Mouth (213) is connected to the channel, and second opening (214) is connected to second chamber (212).
3. silencing apparatus as claimed in claim 2, it is characterised in that：The area and described second of first opening (213)
The area of opening (214) is the 1/4~1/3 of the sectional area of first chamber (211).
4. silencing apparatus as claimed in claim 2, it is characterised in that：First group of noise elimination cavity (21) includes third chamber
(215), the third chamber (215) is equipped with the third opening (216) for being connected to second chamber (212).
5. silencing apparatus as claimed in claim 4, it is characterised in that：The area of the third opening (216) is described second
The 1/3~1/2 of the sectional area of chamber (212).
6. silencing apparatus as claimed in claim 4, it is characterised in that：First group of noise elimination cavity (21) includes two described the
Three chambers (215), two third chambers (215) are located at the both sides of second chamber (212).
7. silencing apparatus as described in claim 1, it is characterised in that：Second group of noise elimination cavity (22) includes the 4th chamber
(221) and the 5th chamber (222), the 4th chamber (221) is equipped with the first porous plate (223) and the second porous plate (224), and described the
One porous plate (223) is connected to the channel, and second porous plate (224) is connected to the 5th chamber (222).
8. silencing apparatus as claimed in claim 7, it is characterised in that：The volume of 4th chamber (221) is at least described
Twice of the volume of five chambers (222).
9. silencing apparatus as described in claim 1, it is characterised in that：First noise elimination structure (2) includes two described the
Two groups of noise elimination cavities (22), two second group of noise elimination cavities (22) are located at the both sides of first group of noise elimination cavity (21).
10. silencing apparatus as described in claim 1, it is characterised in that：First noise elimination structure (2) includes pipe (23), institute
The first end for stating pipe (23) is connected to the channel, the second end closing of the pipe (23).
11. silencing apparatus as claimed in claim 10, it is characterised in that：The pipe (23) is arranged in first group of noise elimination cavity
(21) and/or in second group of noise elimination cavity (22).
12. silencing apparatus as claimed in claim 10, it is characterised in that：First noise elimination structure (2) includes at least two
The length of the pipe (23), each pipe (23) is similar and different.
13. silencing apparatus as described in claim 1, it is characterised in that：First noise elimination structure (2) is connected to the channel
Side be set to the air inlet (11) introduce airflow direction side.
14. silencing apparatus as described in claim 1, it is characterised in that：Including dedusting dehumidification structure (3), the dedusting dehumidifying
Structure (3) is set in the channel and the connection channel.
15. silencing apparatus as claimed in claim 14, it is characterised in that：The dedusting dehumidification structure (3) connects with the channel
Meet the airflow direction introduced to the air inlet (11) in logical side.
16. silencing apparatus as claimed in claim 14, it is characterised in that：The dedusting dehumidification structure (3) includes chamber shell (31),
The chamber shell (31) includes meeting the third porous plate (32) being arranged to the air inlet (11), and dust suction is equipped in the chamber shell (31)
Plate (33) and water-absorbent material (34).
17. silencing apparatus as described in claim 1, it is characterised in that：Including the second noise elimination structure (4), described second eliminates the noise
Structure (4) be set to the channel in, between second noise elimination structure (4) and first noise elimination structure (2) have preset away from
From to form expansion cavity (5).
18. silencing apparatus as claimed in claim 17, it is characterised in that：Second noise elimination structure (4) is relative to described
One noise elimination structure (2) is close to the air outlet (12), and first noise elimination structure (2) is relative to second noise elimination structure (4)
Close to the air inlet (11).
19. silencing apparatus as claimed in claim 17, it is characterised in that：Second noise elimination structure (4) is resistance noise reduction knot
Structure.
20. a kind of road sweeper, it is characterised in that：Including such as claim 1~19 any one of them silencing apparatus.
21. road sweeper as claimed in claim 20, it is characterised in that：Including centrifugal blower, the silencing apparatus is set to centrifugation
The air outlet of wind turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721616008.6U CN207687065U (en) | 2017-11-28 | 2017-11-28 | Silencing apparatus and sweeping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721616008.6U CN207687065U (en) | 2017-11-28 | 2017-11-28 | Silencing apparatus and sweeping machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207687065U true CN207687065U (en) | 2018-08-03 |
Family
ID=62999603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721616008.6U Active CN207687065U (en) | 2017-11-28 | 2017-11-28 | Silencing apparatus and sweeping machine |
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| Country | Link |
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| CN (1) | CN207687065U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956751A (en) * | 2017-11-28 | 2018-04-24 | 徐工集团工程机械有限公司 | Silencing apparatus and sweeping machine |
| CN109159882A (en) * | 2018-10-10 | 2019-01-08 | 珠海格力电器股份有限公司 | It eliminates the noise and mixes bellows and air conditioner |
-
2017
- 2017-11-28 CN CN201721616008.6U patent/CN207687065U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956751A (en) * | 2017-11-28 | 2018-04-24 | 徐工集团工程机械有限公司 | Silencing apparatus and sweeping machine |
| CN107956751B (en) * | 2017-11-28 | 2023-10-31 | 江苏徐工国重实验室科技有限公司 | Silencing device and sweeping machine |
| CN109159882A (en) * | 2018-10-10 | 2019-01-08 | 珠海格力电器股份有限公司 | It eliminates the noise and mixes bellows and air conditioner |
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