CN209228720U - A kind of flow-mixing blower fan with noise interference device - Google Patents
A kind of flow-mixing blower fan with noise interference device Download PDFInfo
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- CN209228720U CN209228720U CN201821962598.2U CN201821962598U CN209228720U CN 209228720 U CN209228720 U CN 209228720U CN 201821962598 U CN201821962598 U CN 201821962598U CN 209228720 U CN209228720 U CN 209228720U
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Abstract
A kind of flow-mixing blower fan with noise interference device, is provided with flow-mixing blower fan main body and the noise interference device for reducing multi-frequency noise, and noise interference device is assemblied in flow-mixing blower fan 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 flow-mixing blower fan 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 flow-mixing blower fan 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 flow-mixing blower fan field, in particular to a kind of flow-mixing blower fan with noise interference device.
Background technique
Blower between flow-mixing blower fan and centrifugal blower, the impeller of flow-mixing blower fan had not only done centrifugal movement by air but also had done
It is axially moved, the movement of air is mixed with two kinds of forms of motion of axis stream and centrifugation in shell, because of referred to herein as mixed flow.Mixed flow (oblique flow) wind
Machine, coefficient of wind pres is higher than axial flow blower, and discharge coefficient is bigger than centrifugal blower, is used in the field of wind pressure and flow all " neither big nor small "
It closes.It has filled up the blank between axial flow blower and centrifugal blower.It is provided simultaneously with and simple and convenient feature is installed.
But in the prior art, flow-mixing blower fan is easy to produce bass i.e. common buzz, the other is multiple
Flow-mixing blower fan used in parallel is to be easy to produce resonance to increase noise.It is chronically in the environment of high noisy, the hearing of people is past
Toward that can be damaged, user emotion problem also will cause in the environment of having noise for a long time.As people's quality of the life improves, people couple
The tolerance of noise is also lower and lower.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 flow-mixing blower fan 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
Flow-mixing blower fan.The flow-mixing blower fan 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 flow-mixing blower fan with noise interference device is provided, is provided with flow-mixing blower fan main body and for reducing multi-frequency
The noise interference device of noise, noise interference device are assemblied in flow-mixing blower fan main body.
Preferably, there are two openings for above-mentioned noise interference device setting.
Preferably, the horizontal position of above-mentioned two opening 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, above-mentioned flow-mixing blower fan main body is provided with outer cover, mixed flow blade group and motor, and motor and mixed flow blade group pass
Dynamic connection, outer cover are assemblied in the outside of motor and mixed flow blade group, and noise interference device is assemblied in the outer surface of outer cover.
Preferably, the monnolithic case of above-mentioned noise interference device is c-type monnolithic case, outside З type monnolithic case, W type entirety
Shape, V-type monnolithic case, M type monnolithic case, m type monnolithic case, N-type monnolithic case, N-shaped monnolithic case, undaform are whole outer
Shape, broken line type monnolithic case or the arbitrary shape in addition to above-mentioned shape.
Preferably, the shape of the cross section of above-mentioned noise interference device be circle, ellipse, rectangle, triangle, diamond shape or
Arbitrary shape of the person in addition to above-mentioned shape.
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 internal diameter of above-mentioned noise interference device is D, and 0 < D≤100mm.
Preferably, above-mentioned noise interference device is provided with multiple.
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, the value of above-mentioned D is multiple.
A kind of flow-mixing blower fan with noise interference device of the utility model, is provided with flow-mixing blower fan main body and for dropping
The noise interference device of low multi-frequency noise, noise interference device are assemblied in flow-mixing blower fan 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 flow-mixing blower fan 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 mixed flow 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 flow-mixing blower fan with noise interference device.
Fig. 2 is the front view of Fig. 1.
Fig. 3 is the schematic cross-section in the direction AA of Fig. 2.
Fig. 4 is the schematic diagram of the monnolithic case of noise interference device, and (1) in Fig. 4 is c-type monnolithic case, in Fig. 4
It (2) is З type monnolithic case, (3) in Fig. 4 are W type monnolithic case, and (4) in Fig. 4 are V-type monnolithic case, and (5) in Fig. 4 are
M type monnolithic case, (6) in Fig. 4 are m type monnolithic case, and (7) in Fig. 4 are N-type monnolithic case, and (8) in Fig. 4 are that N-shaped is whole
External shape, (9) in Fig. 4 are undaform monnolithic case, and (10) in Fig. 4 are undaform monnolithic case, and (11) in Fig. 4 are wave
Wave type monnolithic case, (12) in Fig. 4 are arbitrary shape, and (13) in Fig. 4 are arbitrary shape, and (14) in Fig. 4 are arbitrary shape
Shape, (15) in Fig. 4 are arbitrary shape, and (16) in Fig. 4 are arbitrary shape, and (17) in Fig. 4 are broken line type monnolithic case, figure
(18) in 4 are broken line type monnolithic case.
Fig. 5 is the schematic diagram of the shape of the cross section of noise interference device, and (1) in Fig. 5 is circle, and (2) in Fig. 5 are
Ellipse, (3) in Fig. 5 are rectangle, and (4) in Fig. 5 are triangle, and (5) in Fig. 5 are diamond shape, and (6) in Fig. 5 are any
Shape, (7) in Fig. 5 are arbitrary shape, and (8) in Fig. 5 are arbitrary shape.
Fig. 6 is the length indication in noise interference device schematic cross-section and noise interference channel.
Fig. 7 is noise interference device schematic cross-section and K1And K2The shortest distance Δ L mark.
Fig. 8 is the internal diameter schematic diagram of noise interference device.
Fig. 9 is the schematic diagram of the thickness of noise interference device.
Figure 10 is the schematic diagram of the noise interference device of embodiment 2.
Fig. 1 includes into Figure 10:
Noise interference device 1,
Outer cover 2,
Mixed flow blade group 3,
Motor 4.
Specific embodiment
The technical solution of the utility model is described further with the following Examples.
Embodiment 1.
A kind of flow-mixing blower fan with noise interference device, as shown in Fig. 1 to Fig. 8 being provided with flow-mixing blower fan main body and being used for
The noise interference device 1 of multi-frequency noise is reduced, noise interference device 1 is assemblied in flow-mixing blower fan main body.
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.
Flow-mixing blower fan main body is provided with outer cover 2, mixed flow blade group 3 and motor 4, and motor 4 and the transmission of mixed flow blade group 3 connect
It connects, outer cover 2 is assemblied in the outside of motor 4 and mixed flow blade group 3, and noise interference device 1 is assemblied in the outer surface of outer cover 2.
The monnolithic case of the noise interference device 1 of the utility model is preferably N-shaped monnolithic case, or c-type is whole
Shape, З type monnolithic case, W type monnolithic case, V-type monnolithic case, M type monnolithic case, m type monnolithic case, N-type monnolithic case,
Undaform monnolithic case, broken line type monnolithic case or the arbitrary shape in addition to above-mentioned shape, specific monnolithic case according to
Depending on actual conditions.
The c-type monnolithic case of the utility model, as shown in (1) in Fig. 4.
The З type monnolithic case of the utility model, as shown in (2) in Fig. 4.
The W type monnolithic case of the utility model, as shown in (3) in Fig. 4.
The V-type monnolithic case of the utility model, as shown in (4) in Fig. 4.
The M type monnolithic case of the utility model, as shown in (5) in Fig. 4.
The m type monnolithic case of the utility model, as shown in (6) in Fig. 4.
The N-type monnolithic case of the utility model, as shown in (7) in Fig. 4.
The N-shaped monnolithic case of the utility model, as shown in (8) in Fig. 4.
The undaform monnolithic case of the utility model, such as (9) in Fig. 4, (11) institute such as (10) in Fig. 4 and in Fig. 4
Show, it should be noted that, the undaform monnolithic case in the utility model be not limited to (9) in Fig. 4, (10) in such as Fig. 4 and
These three undaform monnolithic cases of (11) in Fig. 4, any other undaform monnolithic case also comply with the utility model wave
The requirement of type monnolithic case, it is also within the protection scope of the present utility model.
The arbitrary shape of the utility model, in (12) in Fig. 4, (13) in such as Fig. 4, (14) in Fig. 4, Fig. 4
(15) shown in (16) and in Fig. 4, it should be noted that, the arbitrary shape in the utility model is not limited to (12) in Fig. 4, such as
This 5 kinds of arbitrary shapes of (14) in (13), Fig. 4 in Fig. 4, (16) in (15) and Fig. 4 in Fig. 4, other arbitrary shapes
The requirement of the utility model arbitrary shape is also complied with, it is also within the protection scope of the present utility model.
The broken line type monnolithic case of the utility model, as shown in (17) in Fig. 4 and (18) in Fig. 4, it should be noted that,
Broken line type monnolithic case in the utility model is not limited to this 2 kinds of broken line type entirety of (17) in Fig. 4 and (18) in Fig. 4
Shape, other broken line type monnolithic cases also comply with the requirement of the utility model broken line type monnolithic case, also in the utility model
In protection scope.
The shape of c-type monnolithic case, N-shaped monnolithic case, m type monnolithic case or undaform monnolithic case etc. does not have corner angle
Shape, it is possible to reduce sound wave the energy of noise interference device 1 loss, thus improve with the effect of noise source sound wave interference,
And then improve the effect of noise reduction.
The cross section of the noise interference device 1 of the utility model it is conveniently of circular shape, or ellipse, square
Shape, triangle, diamond shape or the arbitrary shape in addition to above-mentioned shape, the shape of specific cross section according to the actual situation and
It is fixed.
The cross section of the noise interference device 1 of the utility model is circle, as shown in (1) in Fig. 5.
The cross section of the noise interference device 1 of the utility model is ellipse, as shown in (2) in Fig. 5.
The cross section of the noise interference device 1 of the utility model is rectangle, as shown in (3) in Fig. 5.It should be noted that
Rectangle in the utility model is not limited to this rectangle of (3) in Fig. 5, other rectangles also comply with the utility model rectangle
It is required that also within the protection scope of the present utility model.
The cross section of the noise interference device 1 of the utility model is triangle, as shown in (4) in Fig. 5.
The cross section of the noise interference device 1 of the utility model is diamond shape, as shown in (5) in Fig. 5.
The cross section of the noise interference device 1 of the utility model be arbitrary shape, as (6) in Fig. 5, (7) in Fig. 5 and
Shown in (8) in Fig. 5.It should be noted that the arbitrary shape in the utility model is not limited to (6) in Fig. 5, (7) in Fig. 5
With this 3 kinds of rectangles of (8) in Fig. 5, other arbitrary shapes also comply with the requirement of the utility model arbitrary shape, also practical at this
In novel protection scope.
The cross section of noise interference device 1 is round or ellipse etc. without angular shape, it is possible to reduce sound wave exists
The loss of the energy of noise interference device 1 to improve the effect with noise source sound wave interference, and then improves the effect of noise reduction.
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 internal diameter of the noise interference device 1 of the utility model is D, and 0 < D≤100mm, the D=of specific the present embodiment
10mm。
It should be noted that this practical internal diameter can be 10mm, and it can also be with 0 to 100mm any number, specific number
Depending on being worth according to the actual situation.
The noise interference device 1 of the present embodiment be provided with it is multiple, specially 12.It should be noted that the utility model is made an uproar
Acoustic interference device 1 can be with 12, 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 N=(2p+1)/2, wherein N is subfrequency multiple, 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.
This has the flow-mixing blower fan of noise interference device, is provided with flow-mixing blower fan main body and for reducing multi-frequency noise
Noise interference device 1, noise interference device 1 are assemblied in flow-mixing blower fan 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 flow-mixing blower fan 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 flow-mixing blower fan 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 flow-mixing blower fan with noise interference device, as shown in figure 9, other features are same as Example 1, difference
It is in 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.
Embodiment 3.
A kind of flow-mixing blower fan with noise interference device, as shown in Figure 10, other features are same as Example 1, different
Place is that the value of the D of the utility model is multiple.
By taking the present embodiment as an example, the monnolithic case N-shaped monnolithic case of noise interference device 1, the shape of cross section is circle,
And the value of D be it is multiple, i.e., the cross section of the noise interference device 1 of the present embodiment be multiple and different internal diameters circle and global shape
For the noise interference device 1 of c-type monnolithic case.
Compared with Example 1, there is the value of multiple D for the same noise interference device 1, it is dry that same noise can be increased
Relate to the noise reduction range of device 1.To which flow-mixing blower fan wideband noise reduction be better achieved.
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 flow-mixing blower fan with noise interference device, it is characterised in that: be provided with flow-mixing blower fan main body and for reducing
The noise interference device of multi-frequency noise, noise interference device are assemblied in flow-mixing blower fan main body.
2. the flow-mixing blower fan according to claim 1 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.
3. the flow-mixing blower fan according to claim 2 with noise interference device, it is characterised in that: the flow-mixing blower fan master
Body is provided with outer cover, mixed flow blade group and motor, and motor and mixed flow blade group are sequentially connected, and outer cover is assemblied in motor and mixed flow leaf
The outside of piece group, noise interference device are assemblied in the outer surface of outer cover.
4. the flow-mixing blower fan according to claim 3 with noise interference device, it is characterised in that: the noise interference dress
The monnolithic case set is c-type monnolithic case, З type monnolithic case, W type monnolithic case, V-type monnolithic case, M type monnolithic case, m type
Monnolithic case, N-type monnolithic case, N-shaped monnolithic case, undaform monnolithic case, broken line type monnolithic case remove above-mentioned shape
Arbitrary shape in addition.
5. the flow-mixing blower fan according to claim 4 with noise interference device, it is characterised in that: the noise interference dress
The shape for the cross section set is circle, ellipse, rectangle, triangle, diamond shape or the arbitrary shape in addition to above-mentioned shape.
6. the flow-mixing blower fan 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 flow-mixing blower fan 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 flow-mixing blower fan according to claim 7 with noise interference device, it is characterised in that: the noise interference dress
The internal diameter set is D, and 0 < D≤100mm；
The noise interference device is provided with multiple.
9. the flow-mixing blower fan according to claim 8 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.
10. the flow-mixing blower fan according to claim 9 with noise interference device, it is characterised in that: 0.6mm≤B≤
1.2mm；
The value of the D is multiple.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821962598.2U CN209228720U (en) | 2018-11-27 | 2018-11-27 | A kind of flow-mixing blower fan with noise interference device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821962598.2U CN209228720U (en) | 2018-11-27 | 2018-11-27 | A kind of flow-mixing blower fan with noise interference device |
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ID=67504678
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| Country | Link |
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2018
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