CN206556223U - Fresh air handling units impedance composite muffler - Google Patents
Fresh air handling units impedance composite muffler Download PDFInfo
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- CN206556223U CN206556223U CN201720158203.2U CN201720158203U CN206556223U CN 206556223 U CN206556223 U CN 206556223U CN 201720158203 U CN201720158203 U CN 201720158203U CN 206556223 U CN206556223 U CN 206556223U
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- housing
- handling units
- fresh air
- anechoic sheet
- noise
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Abstract
The utility model discloses a kind of Fresh air handling units impedance composite muffler, its drip irrigation device is to include housing, it is arranged on the anechoic sheet of enclosure interior, the shell one end is air inlet, the other end is air outlet, the housing is streamlined, the anechoic sheet is also streamlined to be set, the side wall of the housing is provided with noise reduction layer, the air outlet is provided with damping sound-deadening film, on the basis of the noise elimination Mo Yi centers some flow guiding slits are diffused with to surrounding, two pieces of deflectors are additionally provided with the housing, the deflector is provided with some pod apertures, two pieces of described deflector one end interfix, the other end is fixed to form wedge fair water cone with housing, the air outlet is provided with silencing net.This Fresh air handling units impedance composite muffler can reduce windage to reduce the generation of secondary noise；By multiple noise reduction, the acoustical absorptivity of silencer is improved.
Description
Technical field
The utility model is related to a kind of silencer, more specifically, it relates to which a kind of Fresh air handling units impedance complex formula is eliminated the noise
Device.
Background technology
Silencer is to allow air-flow to pass through, but can prevent or reduce a kind of device of sound transmission, is to eliminate air to move
The important measures of power noise.Silencer can stop the propagation of sound wave, it is allowed to which air-flow passes through, and be the effective work for controlling noise
Tool.
Publication No. CN204373184U Chinese patent discloses a kind of silencer for ventilating system, and it includes shell
Body, anechoic sheet and flange plate, the housing are hollow double-decker, and it is internal filled with sound-absorbing material, the anechoic sheet
For hollow platy structure, it is internal filled with sound-absorbing material, and the anechoic sheet is arranged on enclosure interior along airflow direction, institute
State flange plate and be provided with the water conservancy diversion arcs matched with the anechoic sheet end, the two ends of the flange plate and the housing are consolidated
Fixed connection.This silencer for ventilating system can effectively optimize production structure, can mass production, apolegamy is assembled into and disappears
Sound device.Silencer is damaged, failure member is replaceable, and service life is longer, but air-flow is had during noise elimination by disappearing
Sound device, general multiple-piece silencer has windage to produce secondary noise.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of Fresh air handling units impedance complex formula
Silencer, the advantage is that can reduce windage to reduce the generation of secondary noise.
To achieve the above object, the utility model provides following technical scheme：A kind of Fresh air handling units impedance complex formula disappears
Sound device, including housing, the anechoic sheet for being arranged on enclosure interior, the shell one end are air inlet, and the other end is air outlet, described
Housing is streamlined, and the anechoic sheet is also streamlined to be set, and the side wall of the housing is provided with noise reduction layer, and the air inlet is set
Have to be diffused with some flow guiding slits, the housing to surrounding on the basis of damping sound-deadening film, the damping sound-deadening Mo Yi centers and also set
There are two pieces of deflectors, the deflector is provided with some pod apertures, and two pieces of described deflector one end interfix, the other end and shell
Body is fixed to form wedge fair water cone, and the air outlet is provided with silencing net.
By using above-mentioned technical proposal, fairshaped housing is conducive to flowing of the air quantity of blower fan generation in housing,
Reduce the influence that the shape of housing flows to wind speed, air-flow is in the inside for entering housing, and housing sidewall noise reduction layer can be to making an uproar
Sound is effectively cut down, while noise can obtain a certain amount of reduction in the presence of anechoic sheet, noise with air-flow after
Continue and moved to air outlet, two pieces of deflectors formation noise elimination wedges play the role of buffering to air-flow, reduce mutually touching between air-flow
Hit, while acoustic energy is changed into heat energy effectively plays a part of noise elimination, remaining noise is continued with air-flow by pod apertures
Moved to air outlet, the work that the progress that the silencing net at air outlet can be again is eliminated the noise, be conducive to improving silencer
Acoustical absorptivity, is eliminated the noise by many places and reduces the quadratic noise that windage is produced.
The utility model is further arranged to：Described anechoic sheet is provided with some water conservancy diversion arcs grooves.
By using above-mentioned technical proposal, when air-flow passes through on anechoic sheet, water conservancy diversion arcs groove can play drainage
Effect, reduces anechoic sheet and the situation of windage occurs.
The utility model is further arranged to：Between described anechoic sheet be provided with connecting rod, the two ends of the connecting rod with
Two pieces of adjacent anechoic sheets are fixedly connected.
By using above-mentioned technical proposal, the water conservancy diversion arcs groove on anechoic sheet can influence the rigidity of anechoic sheet, and air-flow is passing through
When anechoic sheet, there is certain impact to noise elimination sector-meeting, cause anechoic sheet the situation for shaking dynamic deformation occur, so that wind can be increased
Adjacent anechoic sheet, is fixedly connected by the appearance of resistance by connecting rod, is conducive to reducing the situation that rolling dynamic deformation occurs in anechoic sheet.
The utility model is further arranged to：Described noise reduction layer is acoustical cotton layer.
By using above-mentioned technical proposal, acoustical cotton be between fiber and fiber be crossings on different level, be intertwined mutually,
Many tiny gaps are showed, firm, handy tasteless, waterproof, protection against the tide, permeability are good, easily process, can be according to difference
Need to be made that variously-shaped service life is long, the ability with good sound-absorbing reaches the effect of noise elimination.
The utility model is further arranged to：Described silencing net is to be provided with steel on the outside of mineral wool feltwork, the silencing net
The fixed net of silk.
By using above-mentioned technical proposal, blanket of glass wool material is light and has good resilience, while having excellent subtract
Shake, sound absorption characteristics, especially centering low frequency and various vibrations noises are respectively provided with good assimilation effect, advantageously reduce noise dirty
Dye, can carry certain impact when air-flow passes through silencing net with noise, fixation with steel wire net plays protection to silencing net
Effect, is conducive to reduction silencing net situation about damaging occur.
The utility model is further arranged to：The lateral wall of described housing is provided with waterway, the waterway and noted
Enter coolant.
By using above-mentioned technical proposal, noise can be converted into the certain heat of meeting on heat energy, silencer during noise elimination
Amount, which is transferred out, to be come, and the coolant inside waterway can realize the effect of cooling to silencer, reduces shadow of the heat to silencer
Ring.
In summary, the utility model has the advantages that：
1st, windage can be reduced to reduce the generation of secondary noise；
2nd, by multiple noise reduction, the acoustical absorptivity of silencer is improved.
Brief description of the drawings
Fig. 1 is the structural representation for showing Fresh air handling units impedance composite muffler；
Fig. 2 is the structural representation for showing anechoic sheet；
Fig. 3 is the structural representation for showing damping sound-deadening film.
Reference：1st, housing；11st, air inlet；111st, damping sound-deadening film；1111st, flow guiding slit；12nd, air outlet；121st, disappear
Sound net；13rd, noise reduction layer；14th, deflector；141st, pod apertures；2nd, anechoic sheet；21st, water conservancy diversion arcs groove；3rd, connecting rod；4th, fixation with steel wire
Net；5th, waterway；51st, coolant.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment：A kind of Fresh air handling units impedance composite muffler, as shown in figure 1, including housing 1, being arranged in housing 1
The anechoic sheet 2 in portion, one end of housing 1 is air inlet 11, and the other end is air outlet 12, meeting when air-flow enters 1 inside of housing
There is certain windage, in order to which effectively reduce housing 1 causes windage to air-flow, housing 1 is arranged to streamlined, while will also disappear
Sound piece 2 also it is streamlined set, air-flow from air inlet 11 enter 1 inside of housing when, fairshaped housing 1 and anechoic sheet
2 pairs of air-flows have good guide effect, are conducive to reduction air-flow to occur the influence of windage in silencer.Noise is along with air-flow
When entering 1 inside of housing from air inlet 11, in order to reach the effect of noise elimination well, disappear in air inlet 11 provided with damping
Sound film 111, damping sound-deadening film 111 carries out first time elimination to noise, effectively reduces the noise in communication process, is subtracting
While small noise, in order to reduce influence of the damping sound-deadening film 111 to air-flow, so using the center of damping sound-deadening film 111 as base
Standard is diffused with some flow guiding slits 1111 to surrounding（As shown in Figure 3）, air-flow opened damping sound-deadening film 111 by flow guiding slit 1111
A certain amount of breach, it is ensured that air-flow can be entered smoothly in housing 1 out of air inlet 11.
The air-flow entered in housing 1 can still carry a certain amount of noise, and now anechoic sheet 2 can be played disappears well
Sound is acted on, while fairshaped anechoic sheet 2 also functions to good guide effect to air-flow, is reduced air-flow and was being entered anechoic sheet 2
When the windage that produces, while improving air-flow in order to further and being flowed between anechoic sheet 2, offered on anechoic sheet 2
Some water conservancy diversion arcs grooves 21（As shown in Figure 2）, when air-flow passes through on anechoic sheet 2, water conservancy diversion arcs groove 21 can play drainage
Effect, further reduces anechoic sheet 2 and the situation of windage occurs.Water conservancy diversion arcs groove 21 is being conducive to air-flow between anechoic sheet 2
While flowing, the rigidity of anechoic sheet 2 of reduction, air-flow can be produced necessarily when anechoic sheet 2 were entered to anechoic sheet 2
Impact, now anechoic sheet 2 situation about rocking occurs, the anechoic sheet 2 rocked can increase the windage of air-flow, so as to have impact on gas
The effect of movement and the noise elimination of stream, thus between anechoic sheet 2 be provided with connecting rod 3, the two ends of connecting rod 3 with adjacent two pieces
Anechoic sheet 2 is fixedly connected, and is fixedly connected with adjacent anechoic sheet 2 by connecting rod 3, is conducive to reduction anechoic sheet 2 to rock
The situation of deformation, reduces windage to reduce the generation of secondary noise.
Air-flow still has partial noise and certain rush is produced to housing 1 along with air-flow when by anechoic sheet 2
Hit, now noise will be transmitted to outside by housing 1, environment to external world causes the pollution of noise, in order to reduce noise from
Housing 1 is provided with the noise reduction layer 13 being made up of acoustical cotton layer to the effect of outside transmission on the side wall in housing 1, and acoustical cotton is
It is crossings on different level between fiber and fiber, is intertwined mutually, shows many tiny gaps, it is firm, handy tasteless, prevent
Water, protection against the tide, permeability are good, easily process, can to need to be made variously-shaped service life long according to different, with good
The ability of sound-absorbing reaches the effect of noise elimination, reduces the situation that noise is outwards propagated at housing 1, further realize is eliminated the noise
Work.
By the noise elimination work of damping sound-deadening film 111 and anechoic sheet 2, remaining noise can continue along with air-flow to going out
At air port 12 move, two pieces of deflectors 14 are now additionally provided with housing 1, two pieces of one end of deflector 14 interfix, the other end with
Housing 1, which is fixed, forms wedge fair water cone, two pieces of formation noise elimination wedges of deflector 14, plays the role of buffering to air-flow, reduces gas
Mutual collision between stream, while acoustic energy is changed into heat energy effectively plays a part of noise elimination, in order to ensure that air-flow can be smooth
Flowed out by deflector 14 at air outlet 12, some pod apertures 141 are provided with deflector 14, pod apertures 141 are conducive to
Air-flow passes through from deflector 14, it is ensured that the smooth performance that air-flow is moved inside silencer.
The air-flow flowing at air outlet 12 still can be mingled with noise, so being provided with air outlet 12 by mineral wool felt
Into silencing net 121, the work that the progress that the silencing net 121 at air outlet 12 can be again is eliminated the noise is conducive to improving and eliminates the noise
The acoustical absorptivity of device, is eliminated the noise by many places and reduces the quadratic noise that windage is produced.Blanket of glass wool material is light and has good return
Elasticity, while having excellent damping, sound absorption characteristics, especially centering low frequency and various vibrations noises are respectively provided with good absorption effect
Really, noise pollution is advantageously reduced；Because e-glass surface felt material is light, the situation of damage occurs under the impact of air-flow repeatedly,
Occur situation about damaging under the impact of air-flow to effectively reduce silencing net 121, it is solid provided with steel wire in the outside of silencing net 121
Net 4 is determined, fixation with steel wire net 4 plays a part of protection to silencing net 121, so as to be conducive to reduction silencing net 121 to occur what is damaged
Situation.
Entering the noise elimination work of multiple working procedure inside silencer, and greatly reducing windage during noise elimination to subtract
The generation of small secondary noise, in the process acoustic energy have the situation for being partially converted to heat energy, heat energy outwards conducts from silencer
Out, the environment temperature around silencer can be now influenceed, for the influence of the conduction that effectively reduces temperature, in housing 1
Lateral wall is provided with waterway 5, while the injection coolant 51 in waterway 5.The coolant 51 of the inside of waterway 5 is to silencer
The effect of cooling can be realized, reduces influence of the heat to silencer, advantageously ensures that the stabilization of silencer ambient temperature.
This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability
Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but
As long as all being protected in right of the present utility model by Patent Law.
Claims (6)
1. a kind of Fresh air handling units impedance composite muffler, including housing（1）, be arranged on housing（1）Internal anechoic sheet（2）,
The housing（1）One end is air inlet（11）, the other end is air outlet（12）, it is characterized in that：The housing（1）It is streamlined,
The anechoic sheet（2）Also it is streamlined to set, the housing（1）Side wall be provided with noise reduction layer（13）, the air inlet（11）
Provided with damping sound-deadening film（111）, the damping sound-deadening film（111）On the basis of center some flow guiding slits are diffused with to surrounding
（1111）, the housing（1）Inside it is additionally provided with two pieces of deflectors（14）, the deflector（14）It is provided with some pod apertures（141）,
Two pieces of deflectors（14）One end interfixes, the other end and housing（1）Fixation forms wedge fair water cone, the air outlet
（12）Provided with silencing net（121）.
2. a kind of Fresh air handling units impedance composite muffler according to claim 1, it is characterized in that：The anechoic sheet（2）
It is provided with some water conservancy diversion arcs grooves（21）.
3. a kind of Fresh air handling units impedance composite muffler according to claim 2, it is characterized in that：The anechoic sheet（2）
Between be provided with connecting rod（3）, the connecting rod（3）Two ends and adjacent two pieces of anechoic sheets（2）It is fixedly connected.
4. a kind of Fresh air handling units impedance composite muffler according to claim 3, it is characterized in that：The noise reduction layer（13）
For acoustical cotton layer.
5. a kind of Fresh air handling units impedance composite muffler according to claim 4, it is characterized in that：The silencing net
（121）For glass surface feltwork, the silencing net（121）Outside is provided with fixation with steel wire net（4）.
6. a kind of Fresh air handling units impedance composite muffler according to claim 5, it is characterized in that：The housing（1）'s
Lateral wall is provided with waterway（5）, the waterway（5）Interior injection coolant（51）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720158203.2U CN206556223U (en) | 2017-02-21 | 2017-02-21 | Fresh air handling units impedance composite muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720158203.2U CN206556223U (en) | 2017-02-21 | 2017-02-21 | Fresh air handling units impedance composite muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206556223U true CN206556223U (en) | 2017-10-13 |
Family
ID=60361280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720158203.2U Active CN206556223U (en) | 2017-02-21 | 2017-02-21 | Fresh air handling units impedance composite muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206556223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI700466B (en) * | 2018-08-13 | 2020-08-01 | 黃渤為 | Muffler structure |
-
2017
- 2017-02-21 CN CN201720158203.2U patent/CN206556223U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI700466B (en) * | 2018-08-13 | 2020-08-01 | 黃渤為 | Muffler structure |
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