CN208169206U - A kind of deflector and the blower for being equipped with the deflector - Google Patents
A kind of deflector and the blower for being equipped with the deflector Download PDFInfo
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- CN208169206U CN208169206U CN201820171992.8U CN201820171992U CN208169206U CN 208169206 U CN208169206 U CN 208169206U CN 201820171992 U CN201820171992 U CN 201820171992U CN 208169206 U CN208169206 U CN 208169206U
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- noise reduction
- deflector
- guide plate
- plate body
- flow guide
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Abstract
A kind of deflector, including flow guide plate body, it is characterised in that：Noise reduction hole is provided in flow guide plate body, Turbogrid plates are installed on the inner wall of flow guide plate body, each grid of Turbogrid plates forms noise reduction cavity, each noise reduction cavity is corresponding with a noise reduction hole, also, from the intermediate region of flow guide plate body, two sides gradually become smaller the ratio S/V of the volume V of the area S and noise reduction cavity in noise reduction hole to the left and right.The invention also discloses a kind of blowers for being equipped with the deflector.Noise reduction cavity of the deflector on the noise reduction hole of flow guide plate body and Turbogrid plates corresponds, and, from the intermediate region of flow guide plate body, two sides gradually become smaller the ratio S/V of the volume V of the area S and noise reduction cavity in noise reduction hole to the left and right, according to Helmholz resonance principle, the wind that the resonant frequency of noise reduction cavity can be made to generate with air inlet different location frequency of making an uproar is identical or match, to realize the wideband noise reduction of blower deflector, and then more effectively reduce noise when blower work.
Description
Technical field
The utility model relates to a kind of blowers, more particularly, to a kind of deflector and are equipped with the blower of the deflector.
Background technique
The Chinese way of cooking can generate a large amount of oil smoke, and for the health for keeping kitchen environment cleaning and human body, range hood is had become
For one of essential equipment in Modern Family kitchen.Existing range hood is mounted on centrifugal blower, oil suction in casing internal
In the process of running, the oil smoke of ascension enters casing internal from the air inlet of exhaust fume collecting hood to smoke machine, and is sucked into wind by centrifugal blower
Machine air inlet, and then gas is discharged by fan outlet.In order to enable into exhaust fume collecting hood air inlet oil smoke fast guiding extremely
Air inlet, existing centrifugal blower are generally fitted with deflector in spiral case bottom, and deflector can make oil smoke more block, more collect
Blower interior is entered by air inlet middlely.The water conservancy diversion process of deflector is air quantity from the process for being distributed to concentration, this
During being somebody's turn to do, therefore wind speed changes most fast and fan noise main source can be improved by the structure to deflector
The overall noise of blower is reduced, however, existing blower deflector is without using denoising structure.In conclusion needing pair
Existing deflector structure is further improved.
Utility model content
First technical problem to be solved in the utility model is to provide a kind of structure for above-mentioned state of the art
Simply and it is able to achieve the deflector of wideband noise reduction.
Second technical problem to be solved in the utility model be for the above-mentioned prior art it is present, providing one kind has
The blower of deflector wideband decrease of noise functions.
The utility model solves technical solution used by above-mentioned first technical problem：The deflector, including water conservancy diversion
Plate ontology, it is characterised in that：It is provided with noise reduction hole in the flow guide plate body, grid are installed on the inner wall of the flow guide plate body
Panel, each grids of Turbogrid plates form noise reduction cavity, each noise reduction cavity be corresponding with one described in noise reduction hole, also, noise reduction hole
Area S and the ratio S/V of volume V of noise reduction cavity from the intermediate region of flow guide plate body, two sides are gradually become smaller to the left and right.
Preferably, the ratio S/V becomes larger from bottom to top from the lower part of flow guide plate body.Since air-flow is through deflector
Speed is gradually accelerated in uphill process, and frequency noise is got higher, and according to Helmholz resonance principle, can make the resonance frequency of noise reduction cavity
Rate and the wind that blower generates frequency of making an uproar are identical or match, to realize the frequency conversion noise reduction of blower deflector, and then reduce wind
Noise when machine works.
As a preferred embodiment, the area S size in noise reduction hole all in the flow guide plate body is identical, the grid
The volume V of the noise reduction cavity of plate intermediate region is minimum, and two sides are gradually to the left and right from the intermediate region of Turbogrid plates by the volume V of noise reduction cavity
Become larger.
Further preferably, from the intermediate region of Turbogrid plates, two sides become larger the floor space of the noise reduction cavity to the left and right, and
And the depth of the noise reduction cavity gradually becomes smaller from bottom to top from the lower part of Turbogrid plates.
As another preferred embodiment, the volume V of all noise reduction cavities on the Turbogrid plates is constant, the face in the noise reduction hole
From the intermediate region of flow guide plate body, two sides gradually become smaller product S to the left and right, also, the area S in noise reduction hole is from flow guide plate body
Bottom becomes larger from bottom to top.
As another preferred embodiment, the area S in the noise reduction hole is from the intermediate region of flow guide plate body two sides to the left and right
It gradually becomes smaller, the volume V of the noise reduction cavity is remained unchanged on the left and right directions of Turbogrid plates, and the volume V of the noise reduction cavity is from grid
The lower part of panel gradually becomes smaller from bottom to top.
Further preferably, the depth of the noise reduction cavity gradually becomes smaller from bottom to top from the bottom of flow guide plate body.
As another preferred embodiment, the area S in the noise reduction hole is identical on the left and right directions of flow guide plate body, and from
The bottom of flow guide plate body becomes larger from bottom to top, and the floor space size of the noise reduction cavity is constant, and the depth of noise reduction cavity is certainly
Two sides become larger to the left and right for the intermediate region of Turbogrid plates, and the depth of noise reduction cavity is kept not from bottom to top from the lower part of Turbogrid plates
Become.
Further preferably, the noise reduction hole is in array distribution in flow guide plate body.
As the preferred of any of the above-described scheme, the flow guide plate body includes front side deflector and rear side deflector, in institute
The noise reduction hole described in being provided on front side deflector and rear side deflector is stated correspondingly to lead in the front side deflector and rear side
The Turbogrid plates are mounted on the inner wall of flowing plate.Peace is applicable in using the flow guide plate body of front side deflector and rear side deflector
On the blower of the double air inlets in front and back.
The utility model solves technical solution used by above-mentioned second technical problem：The blower includes spiral case and peace
Impeller inside spiral case, the deflector are mounted on spiral case bottom, it is characterised in that：The ratio S/V is entered the wind in blower
It is maximum at position corresponding to mouth center line.
Compared with prior art, the utility model has the advantage of：The deflector is in the noise reduction hole of flow guide plate body and grid
Noise reduction cavity in panel corresponds, also, the ratio S/V of the volume V of the area S and noise reduction cavity in noise reduction hole is from flow guide plate body
Two sides gradually become smaller to the left and right for intermediate region, according to Helmholz resonance principle, the resonant frequency and wind of noise reduction cavity can be made
The wind that machine air inlet different location generates frequency of making an uproar is identical or match, thus realize the wideband noise reduction of blower deflector, into
And more effectively reduce noise when blower work.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the blower of the utility model embodiment one
Fig. 2 is the structural schematic diagram of another angle of blower of the utility model embodiment one；
Fig. 3 is the structural schematic diagram for being equipped with the range hood of blower of the utility model embodiment one；
Fig. 4 is the enlarged diagram of part A in Fig. 3；
Fig. 5 is the noise reduction hole of the utility model embodiment one and the changing rule schematic diagram of noise reduction cavity；
Fig. 6 is the structural schematic diagram of another range hood of the utility model embodiment one；
Fig. 7 is the enlarged diagram of part B in Fig. 6；
Fig. 8 is the noise reduction hole of the utility model embodiment two and the changing rule schematic diagram of noise reduction cavity；
Fig. 9 is the noise reduction hole of the utility model embodiment three and the changing rule schematic diagram of noise reduction cavity；
Figure 10 is the noise reduction hole of the utility model embodiment four and the changing rule schematic diagram of noise reduction cavity；
Figure 11 be Figure 10 in K-K to structure sectional view；
Figure 12 is the enlarged diagram of C portion in Figure 11；
Figure 13 is the blower fan structure schematic diagram of the utility model embodiment five.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.
Embodiment one：
As shown in Figures 1 to 7, the deflector in the present embodiment includes flow guide plate body 1, and drop is provided in flow guide plate body 1
It makes an uproar hole 11, noise reduction hole 11 is in array distribution in flow guide plate body 1.Turbogrid plates 2 are installed on the inner wall of flow guide plate body 1,
Each grids of Turbogrid plates 2 forms noise reduction cavity 21, and each noise reduction cavity 21 is corresponding with a noise reduction hole 11, also, noise reduction hole 11
From the intermediate region of flow guide plate body 1, two sides gradually become smaller the ratio S/V of the area S and volume V of noise reduction cavity 21 to the left and right, such as scheme
In 2, ratio S/V is maximum at the position corresponding to air inlet center line H, and along direction shown in arrow a and arrow b by
It is decrescence small.In addition, ratio S/V becomes larger from bottom to top from the lower part of flow guide plate body 1, i.e., the ratio of S/V is along arrow in Fig. 3
Direction shown in head c becomes larger.The blower includes spiral case 3 and the impeller 4 that is mounted on inside spiral case, and deflector is mounted on spiral case
3 bottoms,
In the present embodiment, the area S size in all noise reduction holes 11 is identical in flow guide plate body 1,2 intermediate region of Turbogrid plates
Noise reduction cavity 21 volume V it is minimum, and from the intermediate region of Turbogrid plates 2, two sides become larger the volume V of noise reduction cavity 21 to the left and right.
Further, from the intermediate region of Turbogrid plates 2, two sides become larger the floor space of noise reduction cavity 21 to the left and right.As shown in fig. 7, noise reduction
The depth D of chamber 21 gradually becomes smaller from bottom to top from the lower part of Turbogrid plates 2.
According to Helmholz resonance principle, the resonant frequency of each independent noise reduction cavity isC is the velocity of sound, and S is
Corresponding noise reduction hole area, V are noise reduction cavity volume, and L is the effective neck length in noise reduction hole.It follows that the situation constant in other parameters
Under, noise reduction cavity volume becomes larger, and resonant frequency f reduces, conversely, noise reduction cavity volume becomes smaller, resonant frequency f becomes larger.Utilize He Muhuo
Hereby resonate noise reduction principle, and the air in air column and noise reduction cavity in noise reduction hole constitutes elastic resonance system, works as range hood
Partial noise frequency it is identical with the intrinsic frequency of this resonance system when, resonance and and hole wall occur for air column in noise reduction hole
Severe friction occurs, friction enables sound to be converted into thermal energy, to achieve the purpose that noise elimination.
Since air inlet approximate centerline air velocity is maximum, and air-flow through speed in deflector uphill process gradually
Accelerate, frequency noise gets higher, and therefore, the ratio S/V of the volume V of the area S and noise reduction cavity in the deflector noise reduction hole is from deflector
Two sides gradually become smaller to the left and right for the intermediate region of ontology, and ratio S/V becomes larger from bottom to top from the lower part of flow guide plate body,
The wind that just resonant frequency of noise reduction cavity can be made to generate with air inlet different location frequency of making an uproar is identical or match, thus
It realizes the wideband noise reduction of blower deflector, and then more effectively reduces noise when blower work.
Embodiment two：
As shown in figure 8, the volume V of all noise reduction cavities 21 of the deflector of the present embodiment on Turbogrid plates 2 is constant, noise reduction hole
From the intermediate region of flow guide plate body 1, two sides gradually become smaller 11 area S to the left and right, also, the area S in noise reduction hole 11 is from water conservancy diversion
The bottom of plate ontology 1 becomes larger from bottom to top.
Embodiment three：
As shown in figure 9, the 11 area S of noise reduction hole of the deflector of the present embodiment from the intermediate region of flow guide plate body 1 to the left
Right two sides gradually become smaller, and the volume V of noise reduction cavity 21 is remained unchanged on the left and right directions of Turbogrid plates 2, and the volume V of noise reduction cavity 21 is certainly
2 lower part of Turbogrid plates gradually becomes smaller from bottom to top.The volume change rule of noise reduction cavity 21 can be with reference to shown in Fig. 6.
Example IV：
As shown in Figure 10 to 12, the 11 area S of noise reduction hole of the deflector of embodiment is on the left and right directions of flow guide plate body 1
It is identical, and become larger from bottom to top from the bottom of flow guide plate body 1, the floor space size of noise reduction cavity 21 is constant, and noise reduction cavity
From the intermediate region of Turbogrid plates 2, two sides become larger 21 depth to the left and right, the depth of noise reduction cavity 21 from the lower part of Turbogrid plates 2 from
It is remained unchanged on down.
Embodiment five：
As shown in figure 13, the blower in the present embodiment is double air intake blower fans, and flow guide plate body 1 includes 12 He of front side deflector
Rear side deflector 13 is provided with noise reduction hole 11 on front side deflector 12 and rear side deflector 13, correspondingly, in front side deflector
12 and rear side deflector 13 inner wall on be mounted on Turbogrid plates 2.Front side deflector 12 and rear side deflector 13 and corresponding grid
The fit structure of plate 2 can refer to above-described embodiment, herein not reinflated description.
Claims (9)
1. a kind of deflector, including flow guide plate body (1), it is characterised in that：Noise reduction hole is provided on the flow guide plate body (1)
(11), it is equipped on the inner wall of the flow guide plate body (1) Turbogrid plates (2), each grid of Turbogrid plates (2) forms noise reduction cavity
(21), each noise reduction cavity (21) be corresponding with one described in noise reduction hole (11), also, the area S and noise reduction cavity of noise reduction hole (11)
(21) from the intermediate region of flow guide plate body (1), two sides gradually become smaller the ratio S/V of volume V to the left and right.
2. deflector according to claim 1, it is characterised in that：The ratio S/V from the lower part of flow guide plate body (1) from
It is become larger on down.
3. deflector according to claim 2, it is characterised in that：All noise reduction holes on the flow guide plate body (1)
(11) area S size is identical, and the volume V of the noise reduction cavity (21) of Turbogrid plates (2) intermediate region is minimum, and noise reduction cavity (21)
Volume V from the intermediate region of Turbogrid plates (2), two sides are become larger to the left and right.
4. deflector according to claim 3, it is characterised in that：The floor space of the noise reduction cavity (21) is from Turbogrid plates (2)
Two sides become larger to the left and right for intermediate region, also, the depth of the noise reduction cavity (21) from the lower part of Turbogrid plates (2) from lower and
On gradually become smaller.
5. deflector according to claim 2, it is characterised in that：All noise reduction cavities (21) on the Turbogrid plates (2)
Volume V is constant, and from the intermediate region of flow guide plate body (1), two sides gradually become smaller the area S of the noise reduction hole (11) to the left and right, and
And the bottom of the area S of noise reduction hole (11) from flow guide plate body (1) becomes larger from bottom to top.
6. deflector according to claim 2, it is characterised in that：The area S of the noise reduction hole (11) is from flow guide plate body
(1) two sides gradually become smaller to the left and right for intermediate region, and the volume V of the noise reduction cavity (21) is on the left and right directions of Turbogrid plates (2)
It remains unchanged, the lower part of volume V from the Turbogrid plates (2) of the noise reduction cavity (21) gradually becomes smaller from bottom to top.
7. deflector according to claim 2, it is characterised in that：The area S of the noise reduction hole (11) is in flow guide plate body
(1) identical on left and right directions, and become larger from bottom to top from the bottom of flow guide plate body (1), the noise reduction cavity (21)
Floor space size is constant, and from the intermediate region of Turbogrid plates (2), two sides become larger the depth of noise reduction cavity (21) to the left and right, noise reduction
The lower part of the depth of chamber (21) from Turbogrid plates (2) remains unchanged from bottom to top.
8. according to claim 1 to deflector described in any claim in 7, it is characterised in that：The flow guide plate body (1)
Including front side deflector (12) and rear side deflector (13), opened on the front side deflector (12) and rear side deflector (13)
There is the noise reduction hole (11), correspondingly, is respectively mounted on the inner wall of the front side deflector (12) and rear side deflector (13)
There are the Turbogrid plates (2).
9. a kind of blower for being equipped in claim 1 to 8 deflector described in any claim, including spiral case (3) and installation
Impeller (4) inside spiral case, the deflector are mounted on spiral case (3) bottom, it is characterised in that：The ratio S/V is in blower
It is maximum at position corresponding to air inlet center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820171992.8U CN208169206U (en) | 2018-01-31 | 2018-01-31 | A kind of deflector and the blower for being equipped with the deflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820171992.8U CN208169206U (en) | 2018-01-31 | 2018-01-31 | A kind of deflector and the blower for being equipped with the deflector |
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| Publication Number | Publication Date |
|---|---|
| CN208169206U true CN208169206U (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820171992.8U Active CN208169206U (en) | 2018-01-31 | 2018-01-31 | A kind of deflector and the blower for being equipped with the deflector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111189085A (en) * | 2020-01-03 | 2020-05-22 | 宁波方太厨具有限公司 | Range hood and control method thereof |
-
2018
- 2018-01-31 CN CN201820171992.8U patent/CN208169206U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111189085A (en) * | 2020-01-03 | 2020-05-22 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN111189085B (en) * | 2020-01-03 | 2022-03-18 | 宁波方太厨具有限公司 | Range hood and control method thereof |
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