CN209228721U - A kind of axial flow blower with noise interference device - Google Patents
A kind of axial flow blower with noise interference device Download PDFInfo
- Publication number
- CN209228721U CN209228721U CN201821962626.0U CN201821962626U CN209228721U CN 209228721 U CN209228721 U CN 209228721U CN 201821962626 U CN201821962626 U CN 201821962626U CN 209228721 U CN209228721 U CN 209228721U
- Authority
- CN
- China
- Prior art keywords
- noise
- interference device
- axial flow
- noise interference
- flow blower
- 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.)
- Active
Links
Abstract
A kind of axial flow blower with noise interference device, is provided with axial flow blower main body and the noise interference device for reducing multi-frequency noise, and noise interference device is assemblied in axial flow blower main body.The utility model reaches the noise reduction of specific multi-frequency noise by adjusting the shortest distance of the area of two openings of noise interference device, the entire length of noise interference device or two openings.The axial flow blower is able to maintain long-term good noise reduction effect, which has the advantages that low cost, reliability are high.The noise interference device is that the noise that transmits interferes and reaches the noise reduction of specific multi-frequency noise to lower the amplitude of this noise frequency and reduced in resonance amplitude and phase, with axial flow blower through specific noise frequency.The material of the noise interference device is anticorrosive, resist chemical and is hardly damaged.
Description
Technical field
The utility model relates to axial flow blower field, in particular to a kind of axial flow blower with noise interference device.
Background technique
Axial flow blower refers to the equidirectional air-flow of the axis of generation and fan blade.Axial flow blower is widely used model, such as electric wind
Fan, outdoor machine of air-conditioner fan is exactly that axis stream mode runs blower.Axial fan is generally used for that traffic requirement is higher and pressure requirements
Lower occasion.The fixed position of axial fan simultaneously keeps air mobile.Axial flow blower is mainly made of draught fan impeller and casing, knot
Structure is simple but data demand is very high.But axial flow blower is easy to produce bass i.e. common buzz, another
Be multiple axial flow blowers it is used in parallel be to be easy to produce resonance to increasing noise.It is chronically in the environment of high noisy, people's
Hearing is often damaged, and also will cause user emotion problem in the environment of having noise for a long time.As people's quality of the life improves,
People are also lower and lower to the tolerance of noise.Therefore how noise reduction is always the problem for perplexing industry.
Therefore in view of the shortcomings of the prior art, providing a kind of axial flow blower with noise interference device to solve the prior art
It is insufficient very necessary.
Utility model content
The purpose of this utility model is that being provided in place of avoiding the deficiencies in the prior art a kind of with noise interference device
Axial flow blower.The axial flow blower with noise interference device can reduce specific multi-frequency noise.
The above-mentioned purpose of the utility model is realized by following technical measures:
A kind of axial flow blower with noise interference device is provided, is provided with axial flow blower main body and for reducing multi-frequency
The noise interference device of noise, noise interference device are assemblied in axial flow blower main body.
Preferably, above-mentioned noise interference device is distributed in the outer surface of axial flow blower main body.
Preferably, above-mentioned axial flow blower main body is provided with noise filtering device, outer cover, blade and motor, motor and blade
Transmission connection, outer cover are assemblied in the outside of motor and blade, and noise interference device is assemblied in the outer surface of outer cover, noise filtering dress
Set the inner surface for being assemblied in outer cover.
Preferably, above-mentioned noise filtering device is set as being distributed with multiple for eliminating the face of the through-hole of multi-frequency noise
Plate.
Preferably, the aperture of above-mentioned through-hole is defined as d, and d≤30mm.
Preferably, the edge minimum range of the edge of above-mentioned through-hole and adjacent through-holes is b, and b is the arbitrary value greater than 0.
Preferably, there are two openings for above-mentioned noise interference device setting；
The horizontal position of described two openings is different；
One of opening is defined as K1, another opening is defined as K2。
Preferably, above-mentioned noise interference device is by adjusting the areas of two openings, the entire length of noise interference device
Or the shortest distance of two openings reaches the noise reduction of specific multi-frequency noise.
Preferably, the length of above-mentioned noise interference device is defined as La, and 0 < La≤1000mm.
Preferably, above-mentioned K1And K2The shortest distance be defined as Δ L, and La > Δ L > 5mm.
Preferably, the wall thickness of above-mentioned noise interference device is defined as B, and 0.1mm≤B≤10mm.
Preferably, above-mentioned 0.6mm≤B≤1.2mm；
Preferably, above-mentioned noise interference device is provided with multiple.
Preferably, the value of above-mentioned d is multiple.
Preferably, the value of above-mentioned b is multiple.
Preferably, above-mentioned noise filtering device is by adjusting the aperture of different through-holes or the edge of through-hole and adjacent through-holes
Edge minimum range or noise filtering device reach specific unifrequency noise or multi-frequency noise at a distance from smoke machine main body
Noise reduction.
A kind of axial flow blower with noise interference device of the utility model, is provided with axial flow blower main body and for dropping
The noise interference device of low multi-frequency noise, noise interference device are assemblied in axial flow blower main body.The utility model by adjusting
The area of two openings, the entire length of noise interference device or two shortest distances being open of noise interference device reach
The noise reduction of specific multi-frequency noise.The axial flow blower is able to maintain long-term good noise reduction effect, which has low
The high advantage of cost, reliability.The noise interference device is the resonance amplitude and phase through specific noise frequency, with axis stream wind
The noise transmitted in machine, which is interfered, to be reached the noise reduction of specific multi-frequency noise to lower the amplitude of this noise frequency and is dropped
It is low.The material of the noise interference device is anticorrosive, resist chemical and is hardly damaged.
Detailed description of the invention
The utility model is further described using attached drawing, but the content in attached drawing is not constituted to the utility model
Any restrictions.
Fig. 1 is a kind of axial flow blower with noise interference device.
Fig. 2 is the front view of Fig. 1.
Fig. 3 is the length indication in noise interference device schematic cross-section and noise interference channel.
Fig. 4 is noise interference device schematic cross-section and K1And K2The shortest distance Δ L mark.
Fig. 5 is the schematic diagram of the thickness of noise interference device.
Fig. 6 is the schematic diagram of the noise filtering device of embodiment 1.
Fig. 7 is the edge minimum range relation schematic diagram of the through-hole aperture of embodiment 1 and the edge of through-hole and adjacent through-holes.
Fig. 8 is the edge minimum range relation schematic diagram of the through-hole aperture of embodiment 2 and the edge of through-hole and adjacent through-holes.
Fig. 1 includes into Fig. 8:
Noise interference device 1,
Outer cover 2,
Noise filtering device 3, through-hole 31,
Blade 4,
Motor 5.
Specific embodiment
The technical solution of the utility model is described further with the following Examples.
Embodiment 1.
A kind of axial flow blower with noise interference device is provided with axial flow blower main body and is used for as shown in Fig. 1 to 7
The noise interference device 1 of multi-frequency noise is reduced, noise interference device 1 is assemblied in axial flow blower main body.Noise interference device 1 divides
It is distributed in the outer surface of axial flow blower main body.
Axial flow blower main body is provided with noise filtering device 3, outer cover 2, blade 4 and motor 5, and motor 5 and the transmission of blade 4 connect
It connects, outer cover 2 is assemblied in the outside of motor 5 and blade 4, and noise interference device 1 is assemblied in the outer surface of outer cover 2, noise filtering dress
Set 3 inner surfaces for being assemblied in outer cover 2.
Noise filtering device 3 is set as being distributed with multiple for eliminating the panel of the through-hole 31 of multi-frequency noise.Through-hole 31
Aperture be defined as d, and d≤30mm.The edge of through-hole 31 and the edge minimum range of adjacent through-holes 31 are b, and b is greater than 0
Arbitrary value.
There are two openings for the setting of noise interference device 1.The horizontal position of two openings is different.By one of opening definition
For K1, another opening is defined as K2.Noise interference device 1 by adjusting two be open areas, noise interference device 1 it is whole
The shortest distance of body length or two openings reaches the noise reduction of specific multi-frequency noise.
The length of the noise interference device 1 of the utility model is defined as La, and 0 < La≤ 1000mm, the L of the present embodimentaTool
Body is 300mm.
It should be noted that the length of the noise interference device 1 of the utility model can be 300mm, or it is greater than 0,
Random length less than 1000mm, depending on specific length is with actual conditions.
The K of the utility model1And K2The shortest distance be defined as Δ L, and La> Δ L > 5mm, the Δ L of the present embodiment is specific
For 100mm.
It should be noted that the K of the utility model1And K2The shortest distance can be 100mm, or be greater than 5mm, it is small
In LaAny distance, depending on specific distance is with actual conditions.
The wall thickness of the noise interference device 1 of the utility model is defined as B, and 0.1mm≤B≤10mm, and the preferably range of B is
0.6mm to 1.2mm, the B of the present embodiment are specially 0.8mm.
It should be noted that noise sound wave can penetrate out or cause being total in structure when the wall thickness of noise interference device 1 is too thin
Vibration, noise increases, and when the wall thickness of noise interference device 1 is too thick, increases whole weight and production cost, the utility model
The wall thickness of noise interference device 1 is any wall thickness within the scope of 0.1mm to 10mm, can also be appointing within the scope of 0.6mm to 1.2mm
Anticipate wall thickness, specific wall thickness according to the actual situation depending on.
The noise interference device 1 of the present embodiment be provided with it is multiple, specially 6.It should be noted that the utility model is made an uproar
Acoustic interference device 1 can be with 6, or the arbitrary number greater than 2, specific performance according to the actual situation depending on.
The parameter of multiple noise interference devices 1 of the present embodiment can be the same or different.The parameter that difference is is made an uproar
Noise interference device 1, the specific different f of the basic frequency of different noise interference devices 10,1And f0,2, therefore can reduce wider
The noise of frequency.For the noise interference device 1 with identical parameters, the noise reduction effect of identical frequency can be improved.
The principles of the present invention are as follows: noise interference device 1 (Herschel-Quincke pipe) is according between sound wave
Interference achievees the effect that reduce sound.Noise interference device 1 be according between sound wave resonance and interference reach reduce sound
Effect.Because noise interference device 1 has multiple resonant frequencies: f0,1、f0,2、fs1And fs2.The broadband noise that kitchen ventilator generates
Wave is propagated in main air duct 2, and when encountering noise interference device, broadband noise waves are divided into first via broadband noise waves and second
It has a lot of social connections frequency noise wave, the continuation of first via broadband noise waves is propagated in main air duct 2；Second have a lot of social connections frequency noise wave enter make an uproar
Acoustic interference device 1 simultaneously resonates with noise interference device 1, and leads from one of them remittance that is open out of noise interference device
Air duct 2.When the second frequency noise wave of having a lot of social connections has and f0,1、f0,2、fs1And fs2When same or similar frequency, second has a lot of social connections frequency
Rate noise waves enter noise interference device 1 and resonate with noise interference device 1, and from wherein the one of noise interference device 1
A opening, which comes out, imports main air duct.The first via broadband noise waves propagated from from noise interference device 1 are importing main air duct 2
Second propagated afterwards with main air duct 2 has a lot of social connections frequency noise wave there are phase difference, and first via broadband noise waves and second are had a lot of social connections frequently
Rate noise waves interfere to form interference broadband noise waves, interfere amplitude of the broadband noise waves relative to broadband noise waves
Weaken, noise reduces.
The length L of the basic frequency of 1 target noise reduction of noise interference device and velocity of sound c, noise interference device 1aAnd noise is dry
Relate to the K of device 11And K2Shortest distance Δ L functional dependence reciprocal, such as following formula:
Wherein f is the basic frequency of 1 target noise reduction of noise interference device, and F is function representation symbol.Expression in above formula
Are as follows:And (2p+1/2, wherein N is subfrequency multiple to N=, and p is arbitrary integer.
So the basic frequency of target noise reduction frequency is expressed as f0,1And f0,2, subfrequency fs1And fs2It can indicate
Are as follows:
fs1=[3f0,1,5f0,1,...........,xf0,1],
fs2=[2f0,2,3f0,2,...........,yf0,2],
Wherein ∞ >=x >=2m+1, m=1,2,3....., ∞, wherein ∞ >=y >=2, because the bright noise of the utility model is dry
Two basic frequencies and multiple harmonic frequencies can be formed so as to mutually relate to multi-frequency noise by relating to device 1, reach wideband noise reduction
Purpose.
The denoising device principle of the utility model be such that noise filtering device 3 can in the inside of axial flow blower,
When noise source travels to noise filtering device 3, noise reduction is carried out.Sound wave is usually passed with opposite direction touching noise filtering device 3
It broadcasts, so most incidence wave can be interfered with back wave.Noise filtering device 3 is dropped using the principle of resonance
It makes an uproar, the noise filtering device 3 of specific noise frequency and the target frequency of setting in space forms covibration.When resonance is sent out
When raw, the sound wave of oscillation can intensely pierce into out through-hole 31 back and forth in air, and the sound of noise can be converted in the process
Friction loss achievees the effect that eliminate target frequency noise.
This has the axial flow blower of noise interference device, is provided with axial flow blower main body and for reducing multi-frequency noise
Noise interference device 1, noise interference device 1 are assemblied in axial flow blower main body.The utility model is by adjusting noise interference device 1
Two opening area, noise interference device 1 entire length or two opening the shortest distances reach specific multi-frequency
The noise reduction of noise.The axial flow blower is able to maintain long-term good noise reduction effect, which has inexpensive, reliable
Spend high advantage.The noise interference device 1 is transmitted in resonance amplitude and phase, with axial flow blower through specific noise frequency
Noise interfere and reach the noise reduction of specific multi-frequency noise to lower the amplitude of this noise frequency and reduced.This is made an uproar
The material of acoustic interference device 1 is anticorrosive, resist chemical and is hardly damaged.
Embodiment 2.
A kind of axial flow blower with noise interference device, as shown in figure 8, other features are same as Example 1, difference
Be in the value in, d be it is multiple, the value of b be it is multiple, the value of specific d and b are all two.
It should be noted that the value of the d and b of the utility model can be set to two, or any just whole greater than 2
Number, specific number according to the actual situation depending on.
In the constant situation of aperture d, the smaller elimination of value of the edge minimum range b at the edge and adjacent through-holes 31 of through-hole 31
Target noise frequency it is bigger.Under the edge of through-hole 31 and the constant situation of edge minimum range b of adjacent through-holes 31, aperture
The smaller target noise frequency to be eliminated of the value of d is with regard to smaller.
It should be noted that when the value of value and d for b is unique, it can be to specific unifrequency noise noise reduction.But work as b
It can be according to the two value with being combined into specific unifrequency noise or multi-frequency noise noise reduction when with d being multiple and different values.B's
Value and the number of value of d, size according to the actual situation depending on.
The utility model is by adjusting the aperture of different through-holes 31 or the edge at the edge of through-hole 31 and adjacent through-holes 31
Minimum range or noise filtering device 3 reach the drop of specific unifrequency noise or multi-frequency noise at a distance from smoke machine main body
It makes an uproar.
Compared with Example 1, the adjustment of the target noise reduction frequency of the noise filtering device 3 of the present embodiment is flexibly higher, can
To achieve the purpose that the noise reduction of specific unifrequency noise or multi-frequency noise.
Finally it should be noted that above embodiments are only to illustrate the technical solution of the utility model rather than to this is practical
The limitation of novel protected range, although being explained in detail referring to preferred embodiment to the utility model, the common skill of this field
Art personnel, which should be appreciated that, can be modified or replaced equivalently technical solutions of the utility model, practical new without departing from this
The spirit and scope of type technical solution.
Claims (10)
1. a kind of axial flow blower with noise interference device, it is characterised in that: be provided with axial flow blower main body and for reducing
The noise interference device of multi-frequency noise, noise interference device are assemblied in axial flow blower main body.
2. the axial flow blower according to claim 1 with noise interference device, it is characterised in that: the noise interference dress
Set the outer surface for being distributed in axial flow blower main body.
3. the axial flow blower according to claim 2 with noise interference device, it is characterised in that: the axial flow blower master
Body is provided with noise filtering device, outer cover, blade and motor, and motor is connect with vane belt, and outer cover is assemblied in motor and blade
Outside, noise interference device is assemblied in the outer surface of outer cover, and noise filtering device is assemblied in the inner surface of outer cover.
4. the axial flow blower according to claim 3 with noise interference device, it is characterised in that: the noise filtering dress
Install the panel for being set to and multiple through-holes for being used to eliminate multi-frequency noise being distributed with；
The aperture of the through-hole is defined as d, and d≤30mm；
The edge of the through-hole and the edge minimum range of adjacent through-holes are b, and b is the arbitrary value greater than 0.
5. the axial flow blower according to claim 4 with noise interference device, it is characterised in that: the noise interference dress
Opening there are two installing；
The horizontal position of described two openings is different；
One of opening is defined as K1, another opening is defined as K2；
The noise interference device is by adjusting two areas being open, the entire length of noise interference device or two openings
The shortest distance reach the noise reduction of specific multi-frequency noise.
6. the axial flow blower according to claim 5 with noise interference device, it is characterised in that: the noise interference dress
The length set is defined as La, and 0 < La≤1000mm。
7. the axial flow blower according to claim 6 with noise interference device, it is characterised in that: the K1And K2Most
Short distance is defined as Δ L, and La> Δ L > 5mm.
8. the axial flow blower according to claim 7 with noise interference device, it is characterised in that: the noise interference dress
The wall thickness set is defined as B, and 0.1mm≤B≤10mm.
9. the axial flow blower according to claim 8 with noise interference device, it is characterised in that: 0.6mm≤B≤
1.2mm；
The noise interference device is provided with multiple.
10. the axial flow blower according to claim 9 with noise interference device, it is characterised in that: the value of the d is more
It is a；
The value of the b is multiple；
The noise filtering device is minimum by adjusting the aperture of different through-holes or the edge of through-hole and the edge of adjacent through-holes
Distance or noise filtering device reach the noise reduction of specific unifrequency noise or multi-frequency noise at a distance from smoke machine main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821962626.0U CN209228721U (en) | 2018-11-27 | 2018-11-27 | A kind of axial flow blower with noise interference device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821962626.0U CN209228721U (en) | 2018-11-27 | 2018-11-27 | A kind of axial flow blower with noise interference device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209228721U true CN209228721U (en) | 2019-08-09 |
Family
ID=67504623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821962626.0U Active CN209228721U (en) | 2018-11-27 | 2018-11-27 | A kind of axial flow blower with noise interference device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209228721U (en) |
-
2018
- 2018-11-27 CN CN201821962626.0U patent/CN209228721U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107741045B (en) | Range hood with active noise reduction function | |
| WO2016054947A1 (en) | Vacuum cleaner | |
| CN103835999A (en) | Centrifugal volute and air-conditioner indoor unit with the centrifugal volute | |
| CN110939960A (en) | Range hood with noise reduction structure | |
| CN209228721U (en) | A kind of axial flow blower with noise interference device | |
| CN209431495U (en) | A kind of kitchen ventilator of band self-regulation diameter noise interference device | |
| CN203797910U (en) | Anechoic bend | |
| CN208153215U (en) | A kind of resonant cavity type acoustic wave filter structure | |
| CN208703390U (en) | Noise-reducing structure, silene system and pipe-line system | |
| CN103590999A (en) | Air suction silencer | |
| JP2017068231A (en) | Blower | |
| CN109373395A (en) | A kind of casing of kitchen ventilator and kitchen ventilator with noise interference device | |
| CN209228720U (en) | A kind of flow-mixing blower fan with noise interference device | |
| CN208970161U (en) | Herbage particle production line silencing means | |
| CN110925240A (en) | Frequency-adjustable noise-reducing centrifugal ventilator and volute thereof | |
| JP3191383U (en) | Sound absorber for fan | |
| CN209655386U (en) | A kind of kitchen ventilator of wide frequency noise interference device | |
| CN209622881U (en) | A kind of kitchen ventilator exhaust nozzle pipe of the embedded noise interference device of band | |
| CN203083101U (en) | Silencer of variable-frequency air conditioner | |
| CN209655385U (en) | A kind of kitchen ventilator spiral case and kitchen ventilator with noise interference device | |
| CN109373402A (en) | A kind of kitchen ventilator exhaust nozzle pipe of the embedded noise interference device of band | |
| CN209655387U (en) | A kind of kitchen ventilator of multi-frequency noise interference device | |
| CN208108213U (en) | A kind of range hood | |
| CN111096708B (en) | Air outlet cover assembly of dust collector and dust collector with same | |
| CN203978944U (en) | A kind of noise elimination structure of intake grill filter and sound damper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |