CN106057187A - Resistive and reactive combined assembly type muffler - Google Patents
Resistive and reactive combined assembly type muffler Download PDFInfo
- Publication number
- CN106057187A CN106057187A CN201610492482.6A CN201610492482A CN106057187A CN 106057187 A CN106057187 A CN 106057187A CN 201610492482 A CN201610492482 A CN 201610492482A CN 106057187 A CN106057187 A CN 106057187A
- Authority
- CN
- China
- Prior art keywords
- sound
- muffler
- abatvoix
- noise
- cavity
- 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.)
- Pending
Links
- 230000009467 reduction Effects 0.000 claims abstract description 11
- 230000003584 silencer Effects 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 239000011358 absorbing material Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000428 dust Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000003379 elimination reaction Methods 0.000 description 7
- 230000008030 elimination Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 241000145637 Lepturus Species 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Combustion & Propulsion (AREA)
- Fluid Mechanics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention belongs to the technical field of noise reduction equipment and particularly discloses a resistive and reactive combined assembly type muffler. The muffler includes a muffler casing, a resistive muffler structure, and a reactive muffler structure, the muffler casing is in an L-shaped right-angle pipeline structure, a plurality of magnetic stripes are embedded on the inner wall of the muffler casing, the resistive muffler structure includes a plurality of sound adsorbing plates, one ends of the sound adsorbing plates are detachably connected with the inner wall of the muffler casing, the reactive muffler structure includes a plurality of sound adsorbing cavities, the outer side of each sound adsorbing cavity is L-shaped, the inner side of each sound adsorbing cavity is arc-shaped, and each sound adsorbing cavity is hollow inside, and the sound adsorbing cavities are detachably connected with the inner wall of the muffler casing. Compared with the prior art, the muffler is simple in structure, convenient for manufacturing, and convenient and rapid in operation; the muffler can be effectively applied to various conditions with inconsistent noise conditions; and meanwhile, the muffler has certain automatic cleaning capability.
Description
Technical field
The invention belongs to noise reducing apparatus technical field, particularly relate to a kind of impedance composite Assembled silencer.
Background technology
Ventilation silencer is called for short acoustic filter, is to stop sound transmission and a kind of acoustic equipment of allowing air-flow to pass through.Needing
Keep relatively low background noise, intercept the place of outside noise impact, and strong noise place is to prevent noise to surrounding
Impact, meanwhile, needs again ventilation, is both needed to arrange acoustic filter.Pole applied on architectural acoustics, noise control engineering by acoustic filter
For extensively.The kind of acoustic filter is a lot, and its noise elimination mechanism has resistance noise reduction, reactive muffling, impedance complex formula noise elimination etc..Common disappear
Sound device uses resistive plate silencer, and this kind of acoustic filter has the feature of simple in construction, but, also exist and low-frequency noise is disappeared
Sound effective value is undesirable, and the existence of the spacing of chip can produce high frequency and lose efficacy.Reactive muffler be by the sudden change of pipeline section at
Or side connects resonant cavity etc. and causes the change of impedance to produce the reflection of acoustic energy, interference during acoustic propagation, thus reduce by disappearing
Sound device is to extraradial acoustic energy, to reach the acoustic filter of noise elimination purpose.
Impedance muffler refers to acoustic filter sound absorption and sound reflecting combined rightly.Its most existing resistance
Property acoustic filter eliminate medium, high frequency noise and reactive muffler and eliminate low, the characteristic of mid-frequency noise, there is wide band effect of eliminating the noise
Really.Impedance composite muffler is exactly to high, the significant dissipative muffler of mid-frequency noise soundproof effect and centering, low-frequency noise
The combination of soundproof effect significant reactive muffler is constituted.
But, it is relatively big that existing impedance muffler also exists windage, and resistant part does not possess absorption high-frequency noise
Function, it addition, standard specifications is unified, it is more difficult in the practical situation according to noise, corresponding adjustment dissipative muffler part and resistance
The structure of muffler section, makes noise apparatus can use the place of various noise situations.Existing impedance muffler does not has yet
Realize according to wind direction, relative to the function of regulation acoustic filter internal structure.
Summary of the invention
The purpose of the present invention is providing a kind of impedance composite Assembled silencer, to solve to be difficult to according to noise situations phase
The problem that should regulate acoustic filter internal structure.
In order to achieve the above object, the base case of the present invention is: impedance composite Assembled silencer, including acoustic filter
Housing, resistance noise reduction structure and reactive muffling structure, the described suppressor case right angle pipeline configuration in " ", described acoustic filter
The inwall of housing is embedded with many magnetic stripes；Described resistance noise reduction structure includes multiple abatvoix, one end of described abatvoix with disappear
The inwall of sound device housing removably connects；Described reactive muffling structure includes multiple sound-absorbing cavity, the external side of described sound absorption cavity in
" " shape, sound-absorbing inside cavities is circular arc, and in sound-absorbing cavity body, portion is cavity, and described sound-absorbing cavity is interior with suppressor case
Wall removably connects.
The operation principle of this base case is: this acoustic filter can need to eliminate noise situations according to place, noise place
Demand, assemble corresponding acoustic filter.The resistance noise reduction structure of multiple abatvoixs composition, can be to the medium, high frequency in noise
Sound wave carries out absorption process.The reactive muffling structure of multiple sound-absorbing cavitys composition, by being arranged on suppressor case right angle
Sound-absorbing cavity, can by noise, low-frequency noise eliminates the noise；For convenience in the installation of sound-absorbing cavity, the outside of sound-absorbing cavity
At right angles shape.Abatvoix and sound-absorbing cavity can be multiple, are mounted in suppressor case, according to place noise
Situation, optionally installs abatvoix and the number of sound-absorbing cavity, thus in the case of ensureing not waste resource, by this
Noise effectively absorption is processed by acoustic filter.Abatvoix one end removably connects with the inside of suppressor case, at this acoustic filter
When noise is processed, the wind that the air of circulation is formed in this acoustic filter, it will to abatvoix the other end have a work
Firmly so that abatvoix produces vibration, so that the dust accumulated on abatvoix when this acoustic filter uses is processed.
Be embedded at suppressor case inwall is many with magnetic stripe, the most of dust in adsorbable acoustic filter, prevents dust to be attached to inhale
On soundboard or sound-absorbing cavity, affect the erasure effect of this deafener.When this deafener uses, wind can flow in this deafener
Logical, the dust that magnetic stripe adheres to can be taken away.
In the place that noise ratio is more, in the case of basic, normal, high frequency sound wave is the most more, can install in suppressor case
More sound-absorbing cavity and abatvoix, process noise.In the case of low, intermediate frequency sound wave is the most more, can be at acoustic filter
More abatvoix, a small amount of sound-absorbing cavity are installed in housing, noise is processed.In the feelings that medium, high frequency sound wave is the most more
Under condition, more sound-absorbing cavity, a small amount of sound-absorbing cavity can be installed in suppressor case, noise is processed.
Having the beneficial effects that of this base case: the suppressor case of the right angle pipeline configuration in " ", eliminates the noise at noise
After device enclosure interior, effectively can be processed by its internal structure, not processed after preventing partial noise from flowing through suppressor case；Simultaneously
This structure is easily installed in the occasion of noise.Resistance noise reduction structure effectively can carry out absorption process to the sound wave of medium, high frequency,
Reactive muffling structure effectively centering, the sound wave of low frequency can carry out noise elimination process.By adjust in suppressor case abatvoix and
The quantity of sound-absorbing cavity, makes this acoustic filter realize being suitable for the place of different noise situation.Abatvoix and sound-absorbing cavity pass through
Dismountable inside being connected to suppressor case so that this acoustic filter can be many by installing the quantity of attracting board and sound-absorbing cavity
Few, realize the adjustment to acoustic filter, its simple in construction, operate quick and convenient easy manufacture.This acoustic filter employs resistive simultaneously
Combine with resistance, make this acoustic filter can to noise eliminate the noise while, it is also possible to ventilate.Magnetic stripe then can adsorb muffler shell
Internal dust granule, when this deafener uses, adsorbed dust granule will be carried away by the wind, it is achieved that automated cleaning disappears
Function within sound device.Compared with prior art, this acoustic wave filter structure is simple, be easy to manufacture, easy to operate quickly, acoustic filter is non-
Often effectively achieving and be applicable to the various occasions that noise situation is inconsistent, this acoustic filter has been also equipped with certain the most clear simultaneously
Clean ability.
Scheme two: based on scheme preferred, the inside of described suppressor case is provided with for installing sound-absorbing cavity
Elastic mounting groove, described sound-absorbing cavity is provided with the installation portion engaged with mounting groove；The inside of described suppressor case is provided with
For installing the elastic slot of abatvoix, described abatvoix one end is provided with the holding section engaged with slot.Mounting groove and
Connection between installation portion, can realize sound-absorbing cavity Fast Installation on the inwall of suppressor case；Slot and holding section
Connection can realize abatvoix Fast Installation on the inwall of suppressor case.Mounting groove and slot are elasticity, will
Abatvoix and sound-absorbing cavity can be made also quickly to disassemble.Make this acoustic filter can also make according to concrete after installing
Corresponding adjustment is made by situation.
Scheme three: preferred as scheme two, described slot and mounting groove are multiple, the slot on same sidewall
Being parallel to each other, and be both connected on slot on connection strap, slot is rotationally connected with suppressor case.Slot and mounting groove
It is multiple, the needs according to practical situation can be easy to, selective installation abatvoix and sound-absorbing cavity.Slot is only being eliminated the noise
On one sidewall of device, slot being both connected on connection strap, slot is rotationally connected with suppressor case.Connection strap can be by
So the distance between slot is fixed so that all slot is unanimously around the rotation of suppressor case thin tail sheep.Abatvoix with
Carrying out noise absorbing in processing procedure, entering the air of suppressor case with noise, it will making abatvoix circulate with air
Direction rotate so that this acoustic filter has the performance of good ventilating air.
Scheme four: based on scheme, scheme two, any one of scheme three preferred, the smooth surface of described abatvoix, its
Internal for filling chamber, fill intracavity and fill sound-absorbing material.Noise is when entering this acoustic filter, and air will enter this noise elimination therewith
Device, in order to make this acoustic filter not stop the circulation of air, becomes smooth by the surface configuration of abatvoix, simultaneously in order to ensure sound-absorbing
Plate centering.The treatment effect of high-frequency noise, hollows out inside abatvoix, fills sound-absorbing material.
Scheme five: preferred as scheme four, the size between the plurality of sound-absorbing cavity is inconsistent.Owing to eliminating the noise
The inside right angle of device housing is the most few, is only capable of installing a small amount of sound-absorbing cavity, can not fully meet certain in suppressor case
Demand in the case of Xie, to sound-absorbing cavity.The size of each sound-absorbing cavity is different, can be many to sound-absorbing cavity demand number
Time, select the big sound-absorbing cavity of size, size mend sound-absorbing cavity with the use of so that this acoustic filter range is more
Extensively.
Accompanying drawing explanation
Fig. 1 is the structural representation of impedance composite Assembled silencer embodiment of the present invention；
Fig. 2 is the structural representation of reactive muffling structure in Fig. 1；
Fig. 3 is the structural representation of Fig. 1 slot and mounting bar.
Detailed description of the invention
Below by detailed description of the invention, the present invention is further detailed explanation:
Reference in Figure of description includes: suppressor case 10, flange-interface 11, air outlet louver 12, magnetic stripe 13, suction
Soundboard 20, sound-absorbing material 21, sound-absorbing cavity 30, installation portion 31, slot 40, connection strap 41.
As it is shown in figure 1, impedance composite Assembled silencer, including suppressor case 10, resistance noise reduction structure and resistance
Noise elimination structure, the suppressor case 10 right angle pipeline configuration in " ", the port of the left surface of suppressor case 10 is that flange connects
Mouth 11, acoustic filter right output port is mounted with air outlet louver 12.The inwall of suppressor case 10 is embedded with many magnetic stripes 13, adsorbable
Most of dust in this acoustic filter, during this acoustic filter uses, enters the wind in this acoustic filter and can take away absorption at magnetic
Dust on bar 13, makes this acoustic filter automated cleaning.Resistance noise reduction structure includes multiple abatvoix 20, the surface light of abatvoix 20
Sliding, it is internal for filling chamber, fills intracavity and is filled with the sound-absorbing material 21 of similar acoustical cotton.Reactive muffling structure includes multiple suction
Sound cavity 30, is arranged on the inside of suppressor case 10 with sound-absorbing cavity 30, for convenience in " " shape outside sound-absorbing cavity 30；
As in figure 2 it is shown, in order to the soundproof effect making sound-absorbing cavity 30 is more preferable, in circular arc inside sound-absorbing cavity 30, sound-absorbing cavity 30 body
Inside is cavity, has various sizes of sound-absorbing cavity 40.The right angle of the inside of suppressor case 10 is equipped with for installing suction
The elastic mounting groove of sound cavity 30, sound-absorbing cavity 30 is provided with the installation portion 31 engaged with mounting groove；Make sound-absorbing cavity 30
Can in suppressor case 10 quick despatch.
The fast assembling-disassembling of abatvoix 20 for convenience, as it is shown on figure 3, the inside of suppressor case 10 is provided with for installing suction
The elastic slot 40 of soundboard 20, abatvoix 20 one end is provided with the holding section engaged with slot 40.Slot 40 is multiple,
Each slot 40 is rotationally connected with on suppressor case 10 inwall, and all slots 40 are parallel to each other, simultaneously in all engagings
Groove 40 has all welded on a connection strap 41 so that all slots 40 can produce skew in the same direction simultaneously.
When being embodied as, in the more place of noise ratio, in the case of basic, normal, high frequency sound wave is the most more, can be at acoustic filter shell
More multiple sound-absorbing cavitys 30 and abatvoix 20, and the sound-absorbing cavity 30 of large-size are installed, in body 10 at noise
Reason.In the case of low, intermediate frequency sound wave is the most more, more abatvoix 20 can be installed in suppressor case 10, and a small amount of
Sound-absorbing cavity 30, processes noise.In the case of medium, high frequency sound wave is the most more, can install in suppressor case 10
More sound-absorbing cavity 30, and a small amount of sound-absorbing cavity 30, process noise.Sound-absorbing cavity 30 installation site is limited, can
Various sizes of sound-absorbing cavity 30 is selected according to practical situation.
This acoustic filter can need to eliminate the demand of noise situations according to place, noise place, assemble corresponding noise elimination
Device.During this acoustic filter uses, the resistance noise reduction structure of abatvoix 20 composition, the medium, high frequency sound wave in noise can be carried out
Absorption processes.The reactive muffling structure of sound-absorbing cavity 30 composition, is arranged on suppressor case 10 right angle, can be by noise
In, low-frequency noise eliminate the noise；For convenience in the installation of sound-absorbing cavity 30, the rectangular shape in outside of sound-absorbing cavity 30.Optionally
Abatvoix 20 and sound-absorbing cavity 30 are installed, can be effective by noise by this acoustic filter in the case of ensureing not waste resource
Absorption processes.Abatvoix 20 one end removably connects with the inside of suppressor case 10, processes noise at this acoustic filter
Time, the wind that the air of circulation is formed in this acoustic filter, it will to abatvoix 20 the other end have an active force so that sound-absorbing
Plate 20 produces vibration, so that accumulation dust on abatvoix 20 is processed when this acoustic filter uses.It is embedded and is disappearing
Sound device housing 10 inwall many with magnetic stripe 13, the most of dust in adsorbable acoustic filter, prevent dust to be attached to abatvoix
20 or sound-absorbing cavity 30 on, affect the erasure effect of this deafener.When this deafener uses, adsorbed dust granule will
Can be carried away by the wind, it is achieved that the function within automated cleaning acoustic filter.
Above-described is only embodiments of the invention, and in scheme, the known general knowledge such as concrete structure and characteristic is not made at this
Too much describe.It should be pointed out that, for a person skilled in the art, on the premise of without departing from present configuration, it is also possible to
Making some deformation and improvement, these also should be considered as protection scope of the present invention, and these are all without affecting what the present invention implemented
Effect and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, in description
Detailed description of the invention etc. record the content that may be used for explaining claim.
Claims (5)
1. impedance composite Assembled silencer, including suppressor case, resistance noise reduction structure and reactive muffling structure, its feature
Being, the described suppressor case right angle pipeline configuration in " ", the inwall of described suppressor case is embedded with many magnetic stripes；Institute
State resistance noise reduction structure and include that multiple abatvoix, one end of described abatvoix removably connect with the inwall of suppressor case；Institute
Stating reactive muffling structure and include multiple sound-absorbing cavity, the external side of described sound absorption cavity is in " " shape, and sound-absorbing inside cavities is circular arc,
In sound-absorbing cavity body, portion is cavity, and described sound-absorbing cavity removably connects with the inwall of suppressor case.
2. impedance composite Assembled silencer as claimed in claim 1, it is characterised in that the inside of described suppressor case
Being provided with the elastic mounting groove for installing sound-absorbing cavity, described sound-absorbing cavity is provided with the installation portion engaged with mounting groove；Institute
The inside stating suppressor case is provided with the elastic slot for installing abatvoix, and described abatvoix one end is provided with and slot
The holding section of engaging.
3. impedance composite Assembled silencer as claimed in claim 2, it is characterised in that described slot and mounting groove are equal
For multiple, the slot on same sidewall is parallel to each other, and is both connected on slot on connection strap, slot and acoustic filter shell
Body is rotationally connected.
4. the impedance composite Assembled silencer as described in any one of claim 1-3, it is characterised in that described abatvoix
Smooth surface, it is internal for filling chamber, fills intracavity and fills sound-absorbing material.
5. impedance composite Assembled silencer as claimed in claim 4, it is characterised in that between the plurality of sound-absorbing cavity
Size inconsistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610492482.6A CN106057187A (en) | 2016-06-29 | 2016-06-29 | Resistive and reactive combined assembly type muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610492482.6A CN106057187A (en) | 2016-06-29 | 2016-06-29 | Resistive and reactive combined assembly type muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106057187A true CN106057187A (en) | 2016-10-26 |
Family
ID=57166013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610492482.6A Pending CN106057187A (en) | 2016-06-29 | 2016-06-29 | Resistive and reactive combined assembly type muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106057187A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107426655A (en) * | 2017-08-31 | 2017-12-01 | 歌尔股份有限公司 | Sound-producing device module |
| CN107570770A (en) * | 2017-10-23 | 2018-01-12 | 徐工集团工程机械有限公司 | A kind of detachable noise reduction shroud of slotter and slotter |
| CN113002745A (en) * | 2021-02-02 | 2021-06-22 | 中国船舶重工集团公司第七一九研究所 | Noise elimination cooler and ship cooling system |
| CN113287164A (en) * | 2018-12-06 | 2021-08-20 | 卫福布瑞克公司 | Interference noise control unit |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2280175C1 (en) * | 2004-12-28 | 2006-07-20 | Олег Савельевич Кочетов | Chamber noise silencer |
| CN201554527U (en) * | 2009-03-23 | 2010-08-18 | 厦门嘉达环保建造工程有限公司 | Chip break angle silencer |
| CN101812957A (en) * | 2010-02-01 | 2010-08-25 | 郭德炳 | Soundproof ventilating window |
| CN102522079A (en) * | 2012-01-10 | 2012-06-27 | 厦门嘉达环保建造工程有限公司 | Impedance compound right-angled muffler |
| CN202986750U (en) * | 2012-11-28 | 2013-06-12 | 长城汽车股份有限公司 | Noise-reduction air inlet device for automobile air-conditioner |
| CN103495325A (en) * | 2013-10-24 | 2014-01-08 | 太仓市高泰机械有限公司 | Industrial dusting machine |
| CN203520858U (en) * | 2013-09-30 | 2014-04-02 | 大连明日环境工程有限公司 | Rotatable diversion silencer |
| CN104538016A (en) * | 2014-12-10 | 2015-04-22 | 上海电器科学研究院 | Silencer |
| CN204729153U (en) * | 2015-05-25 | 2015-10-28 | 上海奉贤照相器材有限公司 | Inside be provided with the baffler of metal catalytic air-purifying net |
| CN204960733U (en) * | 2015-08-14 | 2016-01-13 | 深圳市尚德尔科技有限公司 | Noise elimination shutter |
| CN205000866U (en) * | 2015-06-26 | 2016-01-27 | 广州威能机电有限公司 | Window of airing exhaust |
| CN205881448U (en) * | 2016-06-29 | 2017-01-11 | 广州恒成智道信息科技有限公司 | Impedance compound right -angled muffler |
-
2016
- 2016-06-29 CN CN201610492482.6A patent/CN106057187A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2280175C1 (en) * | 2004-12-28 | 2006-07-20 | Олег Савельевич Кочетов | Chamber noise silencer |
| CN201554527U (en) * | 2009-03-23 | 2010-08-18 | 厦门嘉达环保建造工程有限公司 | Chip break angle silencer |
| CN101812957A (en) * | 2010-02-01 | 2010-08-25 | 郭德炳 | Soundproof ventilating window |
| CN102522079A (en) * | 2012-01-10 | 2012-06-27 | 厦门嘉达环保建造工程有限公司 | Impedance compound right-angled muffler |
| CN202986750U (en) * | 2012-11-28 | 2013-06-12 | 长城汽车股份有限公司 | Noise-reduction air inlet device for automobile air-conditioner |
| CN203520858U (en) * | 2013-09-30 | 2014-04-02 | 大连明日环境工程有限公司 | Rotatable diversion silencer |
| CN103495325A (en) * | 2013-10-24 | 2014-01-08 | 太仓市高泰机械有限公司 | Industrial dusting machine |
| CN104538016A (en) * | 2014-12-10 | 2015-04-22 | 上海电器科学研究院 | Silencer |
| CN204729153U (en) * | 2015-05-25 | 2015-10-28 | 上海奉贤照相器材有限公司 | Inside be provided with the baffler of metal catalytic air-purifying net |
| CN205000866U (en) * | 2015-06-26 | 2016-01-27 | 广州威能机电有限公司 | Window of airing exhaust |
| CN204960733U (en) * | 2015-08-14 | 2016-01-13 | 深圳市尚德尔科技有限公司 | Noise elimination shutter |
| CN205881448U (en) * | 2016-06-29 | 2017-01-11 | 广州恒成智道信息科技有限公司 | Impedance compound right -angled muffler |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107426655A (en) * | 2017-08-31 | 2017-12-01 | 歌尔股份有限公司 | Sound-producing device module |
| WO2019041506A1 (en) * | 2017-08-31 | 2019-03-07 | 歌尔股份有限公司 | Resonator device module |
| CN107570770A (en) * | 2017-10-23 | 2018-01-12 | 徐工集团工程机械有限公司 | A kind of detachable noise reduction shroud of slotter and slotter |
| CN113287164A (en) * | 2018-12-06 | 2021-08-20 | 卫福布瑞克公司 | Interference noise control unit |
| CN113002745A (en) * | 2021-02-02 | 2021-06-22 | 中国船舶重工集团公司第七一九研究所 | Noise elimination cooler and ship cooling system |
| CN113002745B (en) * | 2021-02-02 | 2022-03-15 | 中国船舶重工集团公司第七一九研究所 | Noise elimination cooler and ship cooling system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106057187A (en) | Resistive and reactive combined assembly type muffler | |
| CN102522079B (en) | Impedance compound right-angled muffler | |
| JP4350122B2 (en) | Mixed flow fan | |
| CN103562562B (en) | Aerator with Sound Attenuator | |
| JP2005066309A (en) | Vacuum cleaner silencer | |
| CN104165255B (en) | A kind of air pipeline active-passive composite silencing apparatus | |
| CN204880627U (en) | Water conservancy diversion circle subassembly, axial fan and air conditioner | |
| CN101270712A (en) | Muffle duct | |
| WO2016054947A1 (en) | Vacuum cleaner | |
| CN103850987A (en) | Fan muffler for dust remover | |
| WO2019058350A1 (en) | Silencer for a heating, ventilation, and air conditioning system | |
| RU2314009C2 (en) | Sound-suppressing unit for vacuum cleaner | |
| JP2007092672A (en) | Blower | |
| CN205881448U (en) | Impedance compound right -angled muffler | |
| CN214614692U (en) | Sound insulation assembly for opera house | |
| KR102228233B1 (en) | Suppression apparatus of flow noise for exhaust gas | |
| JP2012207618A (en) | Outdoor blower with sound-absorbing box | |
| CN203812558U (en) | Micropore composite disc type silencer | |
| JP2005066308A (en) | Vacuum cleaner silencer | |
| RU2413076C2 (en) | Chamber sound supressor | |
| CN212118032U (en) | Dust collector and mute assembly | |
| CN209706228U (en) | A kind of fan coil of efficient noise abatement | |
| CN108286533B (en) | Silencer for air inlet of axial flow fan | |
| JP2014025399A (en) | Air intake duct | |
| CN106050750A (en) | High-air-volume piece-type impedance composite silencer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161026 |