CN110094368A - 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
- Publication number
- CN110094368A CN110094368A CN201810098360.8A CN201810098360A CN110094368A CN 110094368 A CN110094368 A CN 110094368A CN 201810098360 A CN201810098360 A CN 201810098360A CN 110094368 A CN110094368 A CN 110094368A
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- guide plate
- plate body
- flow guide
- deflector
- 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.)
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- 230000009467 reduction Effects 0.000 claims abstract description 113
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000003517 fume Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/665—Sound attenuation by means of resonance chambers or interference
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of deflector, including flow guide plate body, it is characterized by: being provided with noise reduction hole 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 present invention 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.
Summary of the invention
First technical problem to be solved by this invention is to provide a kind of structure letter for above-mentioned state of the art
Deflector that is single and being able to achieve wideband noise reduction.
Second technical problem to be solved by this invention be it is present for the above-mentioned prior art, providing a kind of has water conservancy diversion
The blower of plate wideband decrease of noise functions.
The present invention solves technical solution used by above-mentioned first technical problem are as follows: the deflector, including deflector sheet
Body, it is characterised in that: be provided with noise reduction hole in the flow guide plate body, be equipped with grid on the inner wall of the flow guide plate body
Plate, 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
From the intermediate region of flow guide plate body, two sides gradually become smaller the ratio S/V of the volume V of area S and noise reduction cavity 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 present invention solves technical solution used by above-mentioned second technical problem are as follows: the blower includes spiral case and is mounted on
Impeller inside spiral case, the deflector are mounted on spiral case bottom, it is characterised in that: the ratio S/V is in air inlet
It is maximum at position corresponding to heart line.
Compared with the prior art, the advantages of the present invention are as follows: the deflector is in the noise reduction hole of flow guide plate body and Turbogrid plates
On noise reduction cavity correspond, 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
Between two sides gradually become smaller to the left and right in region, according to Helmholz resonance principle, can make noise reduction cavity resonant frequency and blower into
The wind that air port different location generates frequency of making an uproar is identical or match, to realize the wideband noise reduction of blower deflector, Jin Ergeng
It is effectively reduced noise when blower work.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the blower of the embodiment of the present invention one
Fig. 2 is the structural schematic diagram of another angle of blower of the embodiment of the present invention one；
Fig. 3 is the structural schematic diagram for being equipped with the range hood of blower of the embodiment of the present invention one；
Fig. 4 is the enlarged diagram of part A in Fig. 3；
Fig. 5 is the noise reduction hole of the embodiment of the present invention one and the changing rule schematic diagram of noise reduction cavity；
Fig. 6 is the structural schematic diagram of another range hood of the embodiment of the present invention one；
Fig. 7 is the enlarged diagram of part B in Fig. 6；
Fig. 8 is the noise reduction hole of the embodiment of the present invention two and the changing rule schematic diagram of noise reduction cavity；
Fig. 9 is the noise reduction hole of the embodiment of the present invention three and the changing rule schematic diagram of noise reduction cavity；
Figure 10 is the noise reduction hole of the embodiment of the present invention 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 embodiment of the present invention five.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
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 (10)
1. a kind of deflector, including flow guide plate body (1), it is characterised in that: be provided with noise reduction hole 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. deflector according to claim 1, it is characterised in that: the noise reduction hole (11) is on flow guide plate body (1)
Array distribution.
9. according to claim 1 to deflector described in any claim in 8, 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).
10. blower described in any claim in claim 1 to 9 is installed a kind of, including spiral case (3) and is mounted on spiral case
Internal impeller (4), the deflector are mounted on spiral case (3) bottom, it is characterised in that: the ratio S/V is in air inlet
It is maximum at position corresponding to center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810098360.8A CN110094368A (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 |
|---|---|---|---|
| CN201810098360.8A CN110094368A (en) | 2018-01-31 | 2018-01-31 | A kind of deflector and the blower for being equipped with the deflector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110094368A true CN110094368A (en) | 2019-08-06 |
Family
ID=67443178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810098360.8A Withdrawn CN110094368A (en) | 2018-01-31 | 2018-01-31 | A kind of deflector and the blower for being equipped with the deflector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110094368A (en) |
Cited By (3)
| 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 |
| CN111197780A (en) * | 2020-01-13 | 2020-05-26 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN112520005A (en) * | 2020-12-18 | 2021-03-19 | 武昌船舶重工集团有限公司 | Air distributor and ship air conditioning system |
-
2018
- 2018-01-31 CN CN201810098360.8A patent/CN110094368A/en not_active Withdrawn
Cited By (5)
| 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 |
| CN111197780A (en) * | 2020-01-13 | 2020-05-26 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN111197780B (en) * | 2020-01-13 | 2021-11-26 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN112520005A (en) * | 2020-12-18 | 2021-03-19 | 武昌船舶重工集团有限公司 | Air distributor and ship air conditioning system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190806 |
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| WW01 | Invention patent application withdrawn after publication |