CN206617341U - Centrifugal multiblade ventilation blower with cylinder denoising structure - Google Patents
Centrifugal multiblade ventilation blower with cylinder denoising structure Download PDFInfo
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- CN206617341U CN206617341U CN201720207681.8U CN201720207681U CN206617341U CN 206617341 U CN206617341 U CN 206617341U CN 201720207681 U CN201720207681 U CN 201720207681U CN 206617341 U CN206617341 U CN 206617341U
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- Prior art keywords
- noise reduction
- ring
- mounting disc
- regulation
- reduction post
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- 238000009423 ventilation Methods 0.000 title claims abstract description 17
- 230000009467 reduction Effects 0.000 claims abstract description 52
- 238000004378 air conditioning Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Abstract
The utility model discloses the centrifugal multiblade ventilation blower with cylinder denoising structure.Air-conditioning noise is one of main noise source in daily life, and centrifugal fan noise is the chief component of air-conditioning noise.Centrifugal multiblade ventilation blower of the utility model with cylinder denoising structure, including spiral case, mounting disc, impeller and noise reduction post cage.Impeller is arranged between the air inlet of spiral case both sides, and constitutes revolute pair with spiral case.Noise reduction post cage is made up of integrally formed connection ring, regulation ring and noise reduction post.The utility model reduces the gas flow for being directly impinging blade by setting a noise reduction post in the inner side of every piece of blade, so as to effectively reduce the noise of centrifugal multiblade ventilation blower.Meanwhile, being arranged on the noise reduction post on the inside of impeller can crush the wake zone at impeller outlet, so as to reduce windage loss, improve the stability in blower fan flow field.
Description
Technical field
The utility model belongs to Fan Equipment field, is related to centrifugal fan, and in particular to a kind of band cylinder denoising structure
Centrifugal multiblade ventilation blower.
Background technology
The energy is economy, social development and the important substance uplifted the people's living standard basis.Energy problem is a state
The problem of family is most important.Since the nineties in last century, the contradiction between China's energy supply and demand is continued to increase, energy
The problem of source is short produces therewith.According to investigations, blower fan electricity consumption accounts for the 10% of national electricity consumption.The efficiency of national requirements blower fan must not
Less than 70%, and the average operating efficiency of existing blower fan only has 40%~60%, it is seen that the energy-saving potential of blower fan is very may be used
See, optimize fan performance, improve operational efficiency, the stability of enhancing fan operation has great importance.
The application of blower fan is quite varied, such as applies in architectural engineering, underground engineering, the ventilation of boiler and air inducing, chemical plant
In terms of the dispatch of high temperature corrosion gas, air conditioner ventilation.Centrifugal multiblade ventilation blower applies quite varied, air-conditioning in air-conditioning products
Product is closely bound up with people's daily life.With the improvement of living standards, people are to residing work and living environment requirement
More and more higher, including the requirement to noise.Air-conditioning noise is that main noise of the people's daily life with encountering in work is come
One of source, wherein fan noise are again the chief component of air-conditioning noise, therefore it is logical to be badly in need of a low noise centrifugal multiblade of research and development
Fan Product.
Blower fan is commonly divided into centrifugal blower, axial flow blower and the class of flow-mixing blower fan three, the wherein usage amount of centrifugal blower most
Greatly, therefore, the operation that can centrifugal blower safe, reliable, efficient, in recent years always for fan design, manufacture, scientific research and
Paid close attention to jointly using all departments.Due to the influence that there is rotary part, impeller channel structural curvature is larger and air-flow is sticky
Etc., extremely complex three-dimensional non-steady flowing is showed inside centrifugal blower.The flow phenomenon often occurred mainly include separation,
, also often inevitably there is secondary flow in vortex, the separation of flow, tail etc..These unsteady complex flows are in whole service work
Presence under condition from beginning to end, they are the roots for causing centrifugal blower energy loss and noise to increase.
The content of the invention
The purpose of this utility model is that there is provided a kind of centrifugal multiblade with cylinder denoising structure in view of the shortcomings of the prior art
Ventilation blower.
Centrifugal multiblade ventilation blower of the utility model with cylinder denoising structure, including spiral case, mounting disc, impeller and noise reduction post
Cage.
Described impeller is arranged between two air inlets of spiral case both sides, and constitutes revolute pair with spiral case.Impeller includes m
Piece blade and two retainer rings, 20≤m≤60.Two retainer rings are coaxially disposed, and one end of m piece blades is each attached to a fixation
On ring, the other end is each attached in another retainer ring.M pieces blade is uniform along the circumference of retainer ring.The middle part of m piece blades with
Mounting disc is fixed.Described mounting disc is disk and is coaxially disposed with retainer ring.Offer n through hole in mounting disc, 2≤n≤
6, n through holes are uniform along the circumference of mounting disc.
Described noise reduction post cage is made up of integrally formed connection ring, regulation ring and m root noise reduction posts.Described connection ring with
Regulation ring is coaxially disposed, and one end of m root noise reduction posts is connected with connection ring, and the other end is connected with regulation ring.M root noise reduction posts edge
The circumference of regulation ring is uniform.N regulation groove is offered in regulation ring, n adjusts groove along the circumferential uniform of regulation ring.It is described
The cross section for adjusting groove is close-shaped, is made up of external arc, Inner arc and two sections of connection circular arcs, Inner arc and external arc are equal
Using the center of regulation ring as the center of circle；The radius of Inner arc is equal to the radius sum of mounting disc through hole installs disk center to mounting disc
The distance of through-bore axis.Inner arc, the difference of the radius of external arc are equal with the through-hole aperture of mounting disc.Two sections connect the interior of circular arc
End is connected respectively with the two ends of Inner arc, and the two ends of outer end and external arc are connected respectively.
Described noise reduction post cage has two, and the regulation ring of two noise reduction post cages and the two ends of mounting disc are adjacent to respectively, and
It is coaxially disposed with mounting disc.Each regulation groove of one of noise reduction post cage and the through hole of mounting disc correspondence position and another
The regulation groove of noise reduction post cage correspondence position is bolted.On the perspective plane parallel with mounting disc, the noise reduction post center of circle
The projection of blade is passed through with the line extended line in the mounting disc center of circle.
Described noise reduction post is 1~5mm of radius cylinder.
The utility model has an advantageous effect in that：
1st, the utility model reduces the gas for being directly impinging blade by setting a noise reduction post in the inner side of every blade
Body flow.So as to effectively reduce the noise of centrifugal multiblade ventilation blower.
2nd, the noise reduction post that the utility model is arranged on the inside of impeller can crush the wake zone at impeller outlet, so as to subtract
Few windage loss, improves the stability in blower fan flow field.
3rd, the relative position of noise reduction post and blade can be adjusted in the utility model according to different operating demand, it is ensured that centrifugation
Ventilation blower also can low noise operation under off rating.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is 1/2nd stereogram of the present utility model；
Fig. 3 is a quarter stereogram that the utility model removes spiral case；
Fig. 4 is the blower fan installation diagram of noise reduction post cage in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1,2 and 3, the centrifugal multiblade ventilation blower with cylinder denoising structure, including spiral case 1, mounting disc 2, impeller 3
With noise reduction post cage 4.
As shown in figure 1, impeller 3 is arranged between two air inlets of spiral case both sides, and revolute pair is constituted with spiral case 1.Leaf
Wheel 3 includes 38 blade 3-1 and two retainer ring 3-2.Two retainer ring 3-2 are coaxially disposed, 38 blade 3-1's
One end is each attached on a retainer ring 3-2, and the other end is each attached on another retainer ring 3-2.38 blade 3-1 edges
Retainer ring 3-2's is circumferential uniform.38 blade 3-1 middle part is fixed with mounting disc 2.Mounting disc 2 is for disk and with consolidating
Determine ring 3-2 to be coaxially disposed.Four through holes are offered in mounting disc 2, four through holes are uniform along the circumference of mounting disc 2.
As shown in figure 4, noise reduction post cage 4 is by integrally formed connection ring 4-1, regulation ring 4-3 and 38 noise reduction post 4-2
Composition.Noise reduction post 4-2 is radius 1.5mm cylinder.Connection ring 4-1 is coaxially disposed with regulation ring 4-3,38 noise reduction post 4-
2 one end is connected with connection ring 4-1, and the other end is connected with regulation ring 4-3.38 noise reduction post 4-2 are along regulation ring 4-3
It is circumferential uniform.Four regulation grooves are offered on regulation ring 4-3, four adjust grooves along the circumferential uniform of regulation ring 4-3.Adjust
The cross section of groove is saved to be close-shaped, is made up of external arc, Inner arc and two sections of connection circular arcs, Inner arc and external arc with
Regulation ring 4-3 center is the center of circle；The radius of Inner arc is equal to the center of mounting disc 2 to peace with the radius sum of the through hole of mounting disc 2
The distance of the through-bore axis of sabot 2.Inner arc, the difference of the radius of external arc are equal with the through-hole aperture of mounting disc 2.Two sections of connection circles
The inner of arc is connected respectively with the two ends of Inner arc, and the two ends of outer end and external arc are connected respectively.
Noise reduction post cage 4 has two, and the regulation ring 4-3 of two noise reduction post cages 4 is adjacent to respectively with the both sides of mounting disc 2, and
It is coaxially disposed with mounting disc 2.Each regulation groove of one of noise reduction post cage 4 is with the through hole of the correspondence position of mounting disc 2 and separately
The regulation groove of one correspondence position of noise reduction post cage 4 is bolted.On the perspective plane parallel with mounting disc 2, noise reduction
The line extended line in the post 4-2 centers of circle and the center of circle of mounting disc 2 passes through blade 3-1 projection.
The noise reduction flow of the centrifugal multiblade ventilation blower with cylinder denoising structure is as follows：
Gas enters inside noise reduction post cage 4 from the air inlets of the both sides of spiral case 1, and the gas inside noise reduction post cage 4 is from noise reduction post
Between flow through, gas is during noise reduction post is flowed through, and around the flowing of noise reduction post periphery, therefore the gas flow on the outside of noise reduction post is less than
Gas flow between adjacent two noise reductions post.Because on the perspective plane parallel with mounting disc 2, the noise reduction post 4-2 centers of circle are with installing
The line extended line in the center of circle of disk 2 passes through blade 3-1 projection, therefore the gas for being directly impinging blade is reduced, and blade outboard is produced
Shedding Vortex be less than without the Shedding Vortex produced in the case of noise reduction post cage 4, therefore fan noise reduces.Through the gas of impeller from spiral case
1 gas outlet blowout.
Claims (2)
1. the centrifugal multiblade ventilation blower with cylinder denoising structure, including spiral case, mounting disc, impeller and noise reduction post cage；Its feature exists
In：Described impeller is arranged between two air inlets of spiral case both sides, and constitutes revolute pair with spiral case；Impeller includes m piece leaves
Piece and two retainer rings, 20≤m≤60；Two retainer rings are coaxially disposed, and one end of m piece blades is each attached to a retainer ring
On, the other end is each attached in another retainer ring；M pieces blade is uniform along the circumference of retainer ring；The middle part of m piece blades with peace
Sabot is fixed；Described mounting disc is disk and is coaxially disposed with retainer ring；N through hole, 2≤n≤6, n are offered in mounting disc
Individual through hole is uniform along the circumference of mounting disc；
Described noise reduction post cage is made up of integrally formed connection ring, regulation ring and m root noise reduction posts；Described connection ring and regulation
Ring is coaxially disposed, and one end of m root noise reduction posts is connected with connection ring, and the other end is connected with regulation ring；The regulation of m root noise reductions post edge
The circumference of ring is uniform；N regulation groove is offered in regulation ring, n adjusts groove along the circumferential uniform of regulation ring；The regulation
The cross section of groove is close-shaped, is made up of external arc, Inner arc and two sections of connection circular arcs, Inner arc and external arc are with tune
The center for saving ring is the center of circle；The radius of Inner arc is equal to the radius sum of mounting disc through hole installs disk center to mounting disc through hole
The distance of axis；Inner arc, the difference of the radius of external arc are equal with the through-hole aperture of mounting disc；Two sections connection circular arc the inner with
The two ends of Inner arc are connected respectively, and the two ends of outer end and external arc are connected respectively；
Described noise reduction post cage has two, and the regulation ring of two noise reduction post cages and the two ends of mounting disc are adjacent to respectively, and with peace
Sabot is coaxially disposed；Each regulation groove of one of noise reduction post cage and the through hole and another noise reduction of mounting disc correspondence position
The regulation groove of post cage correspondence position is bolted；On the perspective plane parallel with mounting disc, the noise reduction post center of circle and peace
The line extended line in the sabot center of circle passes through the projection of blade.
2. the centrifugal multiblade ventilation blower according to claim 1 with cylinder denoising structure, it is characterised in that：Described noise reduction
Post is 1~5mm of radius cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720207681.8U CN206617341U (en) | 2017-03-06 | 2017-03-06 | Centrifugal multiblade ventilation blower with cylinder denoising structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720207681.8U CN206617341U (en) | 2017-03-06 | 2017-03-06 | Centrifugal multiblade ventilation blower with cylinder denoising structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206617341U true CN206617341U (en) | 2017-11-07 |
Family
ID=60231943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720207681.8U Expired - Fee Related CN206617341U (en) | 2017-03-06 | 2017-03-06 | Centrifugal multiblade ventilation blower with cylinder denoising structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206617341U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837823A (en) * | 2017-03-06 | 2017-06-13 | 浙江理工大学 | Centrifugal multiblade ventilation blower and its noise reduction flow with cylinder denoising structure |
-
2017
- 2017-03-06 CN CN201720207681.8U patent/CN206617341U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837823A (en) * | 2017-03-06 | 2017-06-13 | 浙江理工大学 | Centrifugal multiblade ventilation blower and its noise reduction flow with cylinder denoising structure |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171107 Termination date: 20200306 |
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| CF01 | Termination of patent right due to non-payment of annual fee |