CN206903939U - Centrifugal impeller and there is its centrifugal blower, dust catcher - Google Patents
Centrifugal impeller and there is its centrifugal blower, dust catcher Download PDFInfo
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- CN206903939U CN206903939U CN201720862422.9U CN201720862422U CN206903939U CN 206903939 U CN206903939 U CN 206903939U CN 201720862422 U CN201720862422 U CN 201720862422U CN 206903939 U CN206903939 U CN 206903939U
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Abstract
The utility model discloses a kind of centrifugal impeller and there is its centrifugal blower, dust catcher, centrifugal impeller includes：Wheel rim, wheel rim are loop configuration；Wheel disc, wheel disc are located at the side of wheel rim and coaxial with wheel rim；Multiple blade groups, circumferentially direction is intervally arranged and is located between wheel rim and wheel disc multiple blade groups, each blade group include multiple blades extended in a radial direction and multiple blades circumferentially direction misses one another setting, each blade-shaped turns into arc and the bending direction of multiple blades in each blade group is identical, normal wherein in the outer end in the radial direction, being located at the blade of upstream in each blade group in two neighboring blade from inside to outside points to the blade positioned at downstream.Centrifugal impeller of the present utility model, energy loss can be reduced, improve operating efficiency, while size reduces, and reduces manufacturing cost.
Description
Technical field
It the utility model is related to the technical field of plant equipment, more particularly to a kind of centrifugal impeller and there is its centrifugation wind
Machine, dust catcher.
Background technology
The blade-shaped that the centrifugal impeller of correlation technique uses mostly turns into the continuous shape leaf from impeller inlet to impeller outlet
Piece, so that the runner that two adjacent blades limit is more long and narrow, stream is easily formed close to exit region in blade suction surface
Dynamic separation and backflow, produce flow losses, cause impeller adiabatic efficiency not high.Make the speed at impeller outlet uneven simultaneously, by
This air-flow being transmitted in diffuser carries out the alternate scour of high speed and low speed to diffuser, and then produces the pneumatic of high frequency and make an uproar
Sound.
Utility model content
The utility model is intended at least solve one of technical problem present in prior art.Therefore, the utility model carries
Go out a kind of centrifugal impeller, energy loss can be reduced, improve operating efficiency, while size reduces, and reduces manufacturing cost.
The utility model also proposes a kind of centrifugal blower, including above-mentioned centrifugal impeller.
The utility model proposes a kind of dust catcher with above-mentioned centrifugal blower again.
According to the centrifugal impeller of the utility model embodiment, including：Wheel rim, the wheel rim are loop configuration；Wheel disc, it is described
Wheel disc is located at the side of the wheel rim and coaxial with the wheel rim；Multiple blade groups, the multiple blade group is circumferentially between direction
Every arranging and being located between the wheel rim and the wheel disc, each blade group includes multiple blades extended in a radial direction
And circumferentially direction misses one another setting the multiple blade, each blade-shaped turns into arc and each blade group
The multiple blade bending direction it is identical, it is adjacent in each blade group wherein from inside to outside in the radial direction
Normal in two blades positioned at the outer end of the blade of upstream points to the blade positioned at downstream.
According to the centrifugal impeller of the utility model embodiment, from inside to outside in the radial direction, by setting each leaf
Normal in piece group in two neighboring blade positioned at the outer end of the blade of upstream points to the blade positioned at downstream, so as to reduce
Energy loss caused by the flow separation of fluid and backflow in centrifugal impeller, and then the operating efficiency of centrifugal impeller is improved, together
When make centrifugal impeller size reduce, and then reduce centrifugal impeller manufacturing cost.
According to some embodiments of the utility model, the blade quantity of neighbouring radial center is little in each blade group
In the blade quantity away from radial center.
According to some embodiments of the utility model, blade group described in every group is included in two that radial direction is sequentially arranged
The blade.
Further, the arc length of the blade of neighbouring radial center and the blade away from radial center in each blade group
The span of the ratio between arc length be 1-10.
Further, the exit installation angle of the blade of neighbouring radial center is β in each blade group, away from radial direction
The stagger angle of the blade of the heart is γ, wherein the β and γ meets：β-γ≤5°.
Preferably, the β and γ meets：1°≤β-γ≤5°.
Further, in each blade group, two points minute on same circumference of the two neighboring blade
Following relational expression is not met with the error angle α that the line angle in the center of circle is the two neighboring blade, wherein α：0 ＜ α≤
120 °/Z, wherein Z is the quantity of the blade group.
According to some embodiments of the utility model, in each blade group, the two neighboring blade is in circumferential side
There is lap upwards.
According to some embodiments of the utility model, the blade of neighbouring radial center and the wheel in each blade group
Disk is split-type structural.
According to some embodiments of the utility model, the blade away from radial center and the wheel in each blade group
Disk is integral type structure.
According to the centrifugal blower of the utility model embodiment, including：Electric machine assembly, the electric machine assembly include motor and electricity
Machine base, the motor are located in the motor base, and the motor includes motor shaft；According to the utility model above-described embodiment
Centrifugal impeller, the wheel disc is provided with connecting portion, and the connecting portion coordinates with the motor shaft to be turned by motor driving
It is dynamic；Diffusion reflux assembly, the diffusion reflux assembly are located between the electric machine assembly and the centrifugal impeller, the motor shaft
Coordinate through the diffusion reflux assembly and the connecting portion, the diffusion reflux assembly includes diffuser and return channel, described
Return channel is close to the electric machine assembly；Outer cover, the outer cover and the motor base coordinate and be enclosed on the motor outside, it is described from
Lobus cardiacus wheel and the diffusion reflux assembly are outer to form diffusion return flow line.
According to the centrifugal blower of the utility model embodiment, by setting the centrifugation according to the utility model above-described embodiment
Impeller, so as to reduce energy loss caused by the flow separation of fluid and backflow in centrifugal impeller, and then improve centrifugation
The operating efficiency of blower fan, minimizes centrifugal blower, reduces the manufacturing cost of centrifugal blower, while can also reduce centrifugal blower
The noise of work, improve the comfortableness of user.
According to the dust catcher of the utility model embodiment, including according to above-mentioned centrifugal blower.
According to the dust catcher of the utility model embodiment, by setting the centrifugation wind according to the utility model above-described embodiment
Machine, so as to improve the operating efficiency of dust catcher, noise during dust catcher work is reduced, improves the comfortableness of user, simultaneously
The appearance and size of dust catcher can be reduced, advantageously reduce the manufacturing cost of dust catcher.
Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will in the description from combination accompanying drawings below to embodiment
Become obvious and be readily appreciated that, wherein：
Fig. 1 is the schematic diagram according to the centrifugal blower of the utility model embodiment；
Fig. 2 is the schematic diagram according to the centrifugal impeller of the utility model embodiment；
Fig. 3 is the partial schematic diagram according to the centrifugal impeller of the utility model embodiment.
Reference：
Centrifugal blower 1000；
Electric machine assembly 100；Motor 11；Motor shaft 111；Motor base 12；
Centrifugal impeller 200；Wheel rim 21；Wheel disc 22；Connecting portion 221；Blade group 23；Blade 231；
Diffusion reflux assembly 300；
Outer cover 400；
Fastening assembly 500.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the utility model, and it is not intended that to of the present utility model
Limitation.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ",
The orientation or position relationship of the instruction such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on shown in the drawings
Orientation or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply signified dress
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model
Limitation.In addition, " first " is defined, the feature of " second " can be expressed or implicitly includes one or more spy
Sign.In description of the present utility model, unless otherwise indicated, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
Centrifugal impeller 200 below with reference to Fig. 1-Fig. 3 descriptions according to the utility model embodiment.
As shown in Figure 1-Figure 3, according to the centrifugal impeller 200 of the utility model embodiment, including：Wheel rim 21, the and of wheel disc 22
Multiple blade groups 23.
Specifically, wheel rim 21 is loop configuration, and wheel disc 22 is located at the side of wheel rim 21 and coaxial with wheel rim 21.
Circumferentially direction is intervally arranged and is located between wheel rim 21 and wheel disc 22 multiple blade groups 23, and each blade group 23 is wrapped
Include multiple blades 231 extended in a radial direction and multiple blades 231 circumferentially direction misses one another setting, each blade 231
It is identical to be formed as the bending direction of arc and multiple blades 231 in each blade group 23, wherein in radial direction side from inside to outside
Upwards, the normal in each blade group 23 in two neighboring blade 231 positioned at the outer end of the blade 231 of upstream, which points to, is located at downstream
Blade 231.Herein it should be noted that " upstream " refers to the side of neighbouring radial center, unidirectional arrow refers to one in Fig. 3
It is located at the normal of the outer end of the blade 231 of upstream in blade group 23.
When the centrifugal impeller 200 of the utility model embodiment works, under the influence of centrifugal force by the axle of centrifugal impeller 200
Radial direction flowing to the fluid that direction is entered in centrifugal impeller 200 along wheel disc 22.In known every group of blade group 23
The bending direction of multiple blades 231 is identical, and from inside to outside in the radial direction, two neighboring leaf in each blade group 23
Normal in piece 231 positioned at the outer end of the blade 231 of upstream points to the blade 231 positioned at downstream.So as in each blade group 23
Blade 231 in two neighboring blade 231 positioned at upstream is formed as a convex surface towards positioned at the side of the blade 231 in downstream,
Blade 231 positioned at downstream is formed as a concave surface towards positioned at the side of the blade 231 of upstream.It is understood that blade
231 bending direction is identical with the rotation direction of wheel disc 22.It follows that when centrifugal impeller 200 works, convex surface is blade 231
Pressure face, concave surface is the suction surface of blade 231.So as to from inside to outside in the radial direction, the utility model embodiment from
The high-velocity fluid on the convex surface of the blade 231 of upstream can be incorporated into the low regime of the concave surface of the blade 231 in downstream by lobus cardiacus wheel 200
Domain, it is known that flow separation regions are also easy to produce in the concave region of blade 231, so as to the centrifugal impeller of the utility model embodiment
200 can be controlled in the swirl flow that suction surface is formed about, and reduce the flow separation of fluid and backflow in centrifugal impeller 200 and are produced
Raw energy loss, and then the operating efficiency of centrifugal impeller 200 can be improved.
In addition, the structure of the centrifugal impeller 200 based on the utility model embodiment, blade 231 can be set according to actual conditions
Count into the molded line of blade 231 with bigger load, so as to improve the acting of the unit length of blade 231, therefore with it is existing
Technology is compared, and in the case of the requirement of identical operating efficiency, can be reduced the external diameter of centrifugal impeller 200, be made the size of centrifugal impeller 200
Reduce, and then reduce the manufacturing cost of centrifugal impeller 200.
It is each by setting from inside to outside in the radial direction according to the centrifugal impeller 200 of the utility model embodiment
Normal in blade group 23 in two neighboring blade 231 positioned at the outer end of the blade 231 of upstream points to the blade positioned at downstream
231, so as to reduce energy loss caused by the flow separation of fluid and backflow in centrifugal impeller 200, and then improve from
The operating efficiency of lobus cardiacus wheel 200, while reduce the size of centrifugal impeller 200, and then reduce the manufacturing cost of centrifugal impeller 200.
According to some embodiments of the utility model, in each blade group 23, the quantity of blade 231 of neighbouring radial center is not
More than the quantity of blade 231 away from radial center.So as to ensure that centrifugal impeller 200 can reduce fluid in centrifugal impeller 200
Energy loss caused by interior flow separation and backflow, and then ensure the operating efficiency of centrifugal impeller 200 to a certain extent.
According to some embodiments of the utility model, every group of blade group 23 is included in two leaves that radial direction is sequentially arranged
Piece 231.It follows that the structure of centrifugal impeller 200 is simple, easily manufactured, cost is low.
Further, when the arc length of the blade 231 of neighbouring radial center in each blade group 23 and remote radial center
When the span of the ratio between the arc length of blade 231 is 1-10, it can ensure that centrifugal impeller 200 can be by upstream to a certain extent
The high-velocity fluid on the convex surface of blade 231 is incorporated into the low-speed region of the concave surface of the blade 231 in downstream, and then reduces centrifugal impeller
200 energy loss, improve the operating efficiency of centrifugal impeller 200.
Further, the exit installation angle of the blade 231 of neighbouring radial center is β in each blade group 23, away from radially
The stagger angle of the blade 231 at center is γ, when β and γ meets：During β-γ≤5 °, advantageously ensure that in footpath from inside to outside
To on direction, the concave surface of the blade 231 in downstream can more fully accept the high-velocity fluid on the convex surface of the blade 231 of upstream, enter
And reduce fluid in centrifugal impeller 200 flow separation and backflow caused by energy loss, improve centrifugal impeller 200 work
Efficiency.
Herein it should be noted that exit installation angle β is between the center of wheel disc 22 and the outer end of the blade 231 of upstream
Line for radius circle middle and upper reaches blade 231 outer end tangent line and upstream blade 231 outer end upstream blade 231
Angle between the tangent line of place camber line.Stagger angle is that γ is with the inner at the center of wheel disc 22 and the blade 231 in downstream
Between line for the blade 231 of the circle middle and lower reaches of radius inner tangent line and downstream blade 231 the inner leaf in downstream
Angle between the tangent line of the place camber line of piece 231.Preferably, β and γ meets：1°≤β-γ≤5°.Further, 1.6 °≤β-
γ≤3.3°。
Further, in each blade group 23, two points on the same circumference of two neighboring blade 231 respectively with
The line angle in the center of circle is the error angle α of two neighboring blade 231, and the quantity of blade group 23 is that Z, wherein α and Z meet：0
During ＜ α≤120 °/Z, it can further ensure that centrifugal impeller 200 can draw the high-velocity fluid on the convex surface of the blade 231 of upstream
Enter the low-speed region to the concave surface of the blade 231 in downstream, and then improve the operating efficiency of centrifugal impeller 200.L is represented in Fig. 3
It is as round dot while by the circle of two neighboring blade 231 in each blade group 23 using the center of wheel disc 22.
According to some embodiments of the utility model, in each blade group 23, two neighboring blade 231 is in circumferential direction
With lap.So as to advantageously ensure that the reliability of the work of centrifugal impeller 200, centrifugal impeller 200 is further improved
Operating efficiency.
According to some embodiments of the utility model, the blade 231 and wheel disc of neighbouring radial center in each blade group 23
22 be split-type structural.Consequently facilitating user changes to the blade 231 of the neighbouring radial center of centrifugal impeller 200, and then
Advantageously ensure that the reliability that centrifugal impeller 200 works.
Alternatively, adjacent to the blade 231 and the riveting of wheel disc 22 of radial center in each blade group 23.So as to one
Determine the manufacturing cost of reduction centrifugal impeller 200 in degree.
Alternatively, the blade 231 of neighbouring radial center is welded to connect with wheel disc 22 in each blade group 23.So as to be advantageous to
The reliability and steadiness that guarantee blade 231 is connected with wheel disc 22.
Alternatively, adjacent to the blade 231 and the bonding connection of wheel disc 22 of radial center in each blade group 23.So as to be advantageous to
The manufacturing cost of centrifugal impeller 200 is reduced, improves the production efficiency of centrifugal impeller 200.
According to some embodiments of the utility model, blade 231 and wheel disc away from radial center in each blade group 23
22 be integral type structure.So as to improve the production efficiency of centrifugal impeller 200, the intensity of centrifugal impeller 200 and reliable is improved
Property.
It is understood that centrifugal impeller 200 can be cold-formed etc. by injection molding.As long as ensure centrifugal impeller
200 integrally-built reliabilities.
According to the centrifugal blower 1000 of the utility model embodiment, including：Electric machine assembly 100, centrifugal impeller 200, diffusion
Reflux assembly 300 and outer cover 400.
Specifically, electric machine assembly 100 includes motor 11 and motor base 12, and motor 11 is located in motor base 12, motor
11 include motor shaft 111.Centrifugal impeller is the centrifugal impeller 200 according to the utility model above-described embodiment, and wheel disc 22 is provided with
Connecting portion 221, connecting portion 221 coordinate to drive rotation by motor 11 with motor shaft 111.So as to which centrifugal impeller 200 is by motor 11
Driving rotates.
Diffusion reflux assembly 300 is located between electric machine assembly 100 and centrifugal impeller 200, and motor shaft 111 flows back through diffusion
Component 300 coordinates with connecting portion 221, and diffusion reflux assembly 300 includes diffuser and return channel, and return channel is close to electric machine assembly
100.Outer cover 400 coordinates with motor base 12 and is enclosed on motor 11 outside, centrifugal impeller 200 and diffusion reflux assembly 300 are outer with shape
Into diffusion return flow line.
So as to which when centrifugal blower 1000 works, controlled motor 11 is rotated to drive centrifugal impeller by motor shaft 111
200 are rotated, and fluid is entered in centrifugal impeller 200 by outer cover 400, and then the flow direction of fluid is by centrifugal impeller 200
Axially change into radially, under the influence of centrifugal force, fluid is accelerated diffusion, radial direction side of the subsequent fluid along centrifugal impeller 200
To discharge centrifugal impeller 200 and enter in the diffusion return flow line formed by outer cover 400 and diffusion reflux assembly 300, in diffusion
The speed of fluid reduces in the presence of device, hydrostatic lifting, is then entered under the drainage of return channel in electric machine assembly 100
To be cooled down to motor 11, centrifugal blower 1000 is then out.
Due in the centrifugal impeller 200 of centrifugal blower 1000 of the present utility model, from inside to outside in the radial direction,
Normal in each blade group 23 in two neighboring blade 231 positioned at the outer end of the blade 231 of upstream points to the leaf positioned at downstream
Piece 231.So as in the radial direction, centrifugal blower 1000 can be by the blade 231 of upstream in centrifugal impeller 200 from inside to outside
The high-velocity fluid on convex surface is incorporated into the low-speed region of the concave surface of the blade 231 in downstream, it is known that is easily produced in the concave region of blade 231
Raw flow separation regions, so as to which centrifugal impeller 200 can be controlled in the swirl flow that suction surface is formed about, reduce centrifugal impeller
Energy loss caused by the flow separation of fluid and backflow in 200, and then improve the operating efficiency of centrifugal impeller 200.Simultaneously
The fluid for making to discharge from centrifugal impeller 200 is preferably improved in the uniformity of the circumferential velocity field of centrifugal impeller 200.Stream
Body is entered in diffuser with uniform flow velocity, so that fluid weakens to the impact effect of diffuser, and then makes centrifugal blower
The peak value of 1000 leaf frequency multiplication acoustical power effectively reduces, and then reduces centrifugal blower 1000 and work caused noise, improves and uses
The comfortableness at family.
In addition, compared with prior art, the size of the centrifugal impeller 200 of centrifugal blower 1000 can reduce, and then can increase
Add the gap-ratio between centrifugal impeller 200 and diffusion reflux assembly 300, when thus can further reduce the work of centrifugal blower 1000
Caused noise, centrifugal blower 1000 is minimized, and then reduce the manufacturing cost of centrifugal blower 1000.
According to the centrifugal blower 1000 of the utility model embodiment, by setting according to the utility model above-described embodiment
Centrifugal impeller 200, so as to reduce energy loss caused by the flow separation of fluid and backflow in centrifugal impeller 200, enter
And the operating efficiency of centrifugal blower 1000 is improved, centrifugal blower 1000 is minimized, reduces the manufacturing cost of centrifugal blower 1000,
The noise of the work of centrifugal blower 1000 can also be reduced simultaneously, improve the comfortableness of user.
Alternatively, the connecting portion 221 of centrifugal impeller 200 is fixedly connected with motor shaft 111 by fastening assembly 500.So as to
The reliability of centrifugal blower 1000 is advantageously ensured that, makes the connected mode of centrifugal impeller 200 and motor 11 simple, it is easy to disassemble.
Further, fastening assembly 500 includes clamp nut and pad.So as to ensure centrifugal impeller 200 and motor 11
The manufacturing cost of centrifugal blower 1000 can be reduced while the reliability being fixedly connected to a certain extent.
According to the dust catcher (not shown) of the utility model embodiment, including according to above-mentioned centrifugal blower 1000.By
Improved in the operating efficiency of centrifugal blower 1000, so that compared with prior art, it is new in this practicality under same vacuum level requirements
In the dust catcher of type embodiment, the external diameter of centrifugal impeller 200 can be designed to appearance and size that is smaller, and then reducing dust catcher, have
Beneficial to the manufacturing cost for reducing dust catcher.
According to the dust catcher of the utility model embodiment, by setting the centrifugation wind according to the utility model above-described embodiment
Machine 1000, so as to improve the operating efficiency of dust catcher, noise during dust catcher work is reduced, improves the comfortableness of user,
The appearance and size of dust catcher can be reduced simultaneously, advantageously reduce the manufacturing cost of dust catcher.
The structure of the centrifugal blower 1000 according to one specific embodiment of the utility model is carried out below with reference to Fig. 1-Fig. 3
Describe in detail.It should be understood that following explanations only have it is exemplary, those of ordinary skill reading this practicality newly
After the following technical proposals of type, it is clear that can either some technical characteristics are combined or replaced to technical scheme therein
Change, change, this is also fallen within the protection domain required by the utility model.
As shown in Figure 1-Figure 3, according to the centrifugal blower 1000 of the utility model embodiment, including：Electric machine assembly 100, from
Lobus cardiacus wheel 200, diffusion reflux assembly 300 and outer cover 400.
Specifically, electric machine assembly 100 includes motor 11 and motor base 12, and motor 11 is located in motor base 12, motor
11 include motor shaft 111.Diffusion reflux assembly 300 is located between electric machine assembly 100 and centrifugal impeller 200, diffusion reflux assembly
300 include diffuser and return channel, and return channel is close to electric machine assembly 100.Outer cover 400 coordinates with motor base 12 and is enclosed on electricity outside
Machine 11, centrifugal impeller 200 and diffusion reflux assembly 300 are outer to form diffusion return flow line.
Centrifugal impeller 200 includes：Wheel rim 21, wheel disc 22 and eight blade groups 23.
Wheel rim 21 is loop configuration, and wheel disc 22 is located at the side of wheel rim 21 and coaxial with wheel rim 21.Wheel disc 22, which is provided with, to be connected
Socket part 221, motor shaft 111 are fixedly connected to drive through diffusion reflux assembly 300 by fastening assembly 500 with connecting portion 221
Centrifugal impeller 200 rotates.Wherein fastening assembly 500 includes clamp nut and pad.
Circumferentially direction is intervally arranged and is located between wheel rim 21 and wheel disc 22 eight blade groups 23, and each blade group 23 is wrapped
Include two blades extended in a radial direction 231, circumferentially direction misses one another setting and suitable in radial direction two blades 231
Secondary arrangement, while two blades 231 have lap in circumferential direction.
Two blades 231 in every group of blade group 23 are formed as arc and bending direction is identical, in radial direction from inside to outside
On direction, the normal positioned at the outer end of the blade 231 of upstream points to the blade 231 positioned at downstream.The blade of neighbouring radial center
The span of 231 arc length and the ratio between the arc length of blade 231 away from radial center is 1-10.The blade of neighbouring radial center
231 exit installation angle is β, and the stagger angle of the blade 231 away from radial center is that γ, wherein β and γ meet：1°≤β-
γ≤5°.Two points on same circumference of two blades 231 are respectively two neighboring with the line angle in the center of circle
The error angle α of blade 231, wherein α meet following relational expression：0 ＜ α≤15 °.The blade 231 and wheel disc 22 of neighbouring radial center
For riveting, blade 231 and wheel disc 22 away from radial center are integral type structure, are injection molding.
According to other compositions of the centrifugal blower 1000 of the utility model embodiment and operate for the common skill in this area
All it is known for art personnel, is not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the present utility model.In this manual, to above-mentioned art
The schematic representation of language is not necessarily referring to identical embodiment or example.Moreover, description specific features, structure, material or
Person's feature can combine in an appropriate manner in any one or more embodiments or example.
While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that：
These embodiments can be carried out with a variety of changes, modification in the case where not departing from principle and objective of the present utility model, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (12)
- A kind of 1. centrifugal impeller, it is characterised in that including：Wheel rim, the wheel rim are loop configuration；Wheel disc, the wheel disc are located at the side of the wheel rim and coaxial with the wheel rim；Multiple blade groups, circumferentially direction is intervally arranged and is located between the wheel rim and the wheel disc the multiple blade group, Each blade group include multiple blades extended in a radial direction and the multiple blade circumferentially direction misses one another and set To put, each blade-shaped turns into arc and the bending direction of the multiple blade in each blade group is identical, wherein In the radial direction, it is being located at the blade of upstream in each blade group in the two neighboring blade from inside to outside The normal of outer end points to the blade positioned at downstream.
- 2. centrifugal impeller according to claim 1, it is characterised in that the leaf of neighbouring radial center in each blade group Piece quantity is not more than the blade quantity away from radial center.
- 3. centrifugal impeller according to claim 1, it is characterised in that blade group is included in radial direction sequentially described in every group Two blades of arrangement.
- 4. centrifugal impeller according to claim 3, it is characterised in that the leaf of neighbouring radial center in each blade group The span of the arc length of piece and the ratio between the arc length of blade away from radial center is 1-10.
- 5. centrifugal impeller according to claim 3, it is characterised in that the leaf of neighbouring radial center in each blade group The exit installation angle of piece is β, and the stagger angle of the blade away from radial center is γ, wherein the β and the γ expire Foot：β-γ≤5°.
- 6. centrifugal impeller according to claim 5, it is characterised in that the β and γ meets：1°≤β-γ≤5°.
- 7. centrifugal impeller according to claim 3, it is characterised in that in each blade group, the two neighboring leaf Two points on the same circumference of piece respectively with error angle that the line angle in the center of circle is the two neighboring blade α, wherein α meet following relational expression：0 ＜ α≤120 °/Z, wherein Z are the quantity of the blade group.
- 8. centrifugal impeller according to claim 1, it is characterised in that in each blade group, the two neighboring leaf Piece has lap in circumferential direction.
- 9. centrifugal impeller according to claim 1, it is characterised in that the leaf of neighbouring radial center in each blade group Piece and the wheel disc are split-type structural.
- 10. centrifugal impeller according to claim 1, it is characterised in that away from radial center in each blade group Blade and the wheel disc are integral type structure.
- A kind of 11. centrifugal blower, it is characterised in that including：Electric machine assembly, the electric machine assembly include motor and motor base, and the motor is located in the motor base, the electricity Machine includes motor shaft；According to the centrifugal impeller any one of claim 1-10, the wheel disc is provided with connecting portion, the connecting portion with The motor shaft coordinates with by the motor-driven rotation；Diffusion reflux assembly, the diffusion reflux assembly are located between the electric machine assembly and the centrifugal impeller, the motor Axle coordinates through the diffusion reflux assembly and the connecting portion, and the diffusion reflux assembly includes diffuser and return channel, institute Return channel is stated close to the electric machine assembly；Outer cover, the outer cover, which coordinates with the motor base and is enclosed on the motor, the centrifugal impeller and the diffusion outside, to return Flow outside component to form diffusion return flow line.
- 12. a kind of dust catcher, it is characterised in that including centrifugal blower according to claim 11.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720862422.9U CN206903939U (en) | 2017-07-14 | 2017-07-14 | Centrifugal impeller and there is its centrifugal blower, dust catcher |
| PCT/CN2018/095571 WO2019011315A1 (en) | 2017-07-14 | 2018-07-13 | Centrifugal vane wheel and centrifugal fan comprising same and dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720862422.9U CN206903939U (en) | 2017-07-14 | 2017-07-14 | Centrifugal impeller and there is its centrifugal blower, dust catcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206903939U true CN206903939U (en) | 2018-01-19 |
Family
ID=61311602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720862422.9U Active CN206903939U (en) | 2017-07-14 | 2017-07-14 | Centrifugal impeller and there is its centrifugal blower, dust catcher |
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| CN (1) | CN206903939U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019011315A1 (en) * | 2017-07-14 | 2019-01-17 | 美的集团股份有限公司 | Centrifugal vane wheel and centrifugal fan comprising same and dust collector |
| CN109253109A (en) * | 2017-07-14 | 2019-01-22 | 美的集团股份有限公司 | Centrifugal impeller and centrifugal blower, dust catcher with it |
| CN109931290A (en) * | 2019-05-07 | 2019-06-25 | 泛仕达机电股份有限公司 | A kind of backward centrifugal impeller |
| CN112177975A (en) * | 2020-10-29 | 2021-01-05 | 广东顺威精密塑料股份有限公司 | Staggered backward centrifugal wind wheel |
| CN112648232A (en) * | 2021-01-11 | 2021-04-13 | 泛仕达机电股份有限公司 | Backward centrifugal fan blade with staggered blades and backward centrifugal fan |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019011315A1 (en) * | 2017-07-14 | 2019-01-17 | 美的集团股份有限公司 | Centrifugal vane wheel and centrifugal fan comprising same and dust collector |
| CN109253109A (en) * | 2017-07-14 | 2019-01-22 | 美的集团股份有限公司 | Centrifugal impeller and centrifugal blower, dust catcher with it |
| CN109253109B (en) * | 2017-07-14 | 2024-07-12 | 美的集团股份有限公司 | Centrifugal impeller and centrifugal fan and dust collector with same |
| CN109931290A (en) * | 2019-05-07 | 2019-06-25 | 泛仕达机电股份有限公司 | A kind of backward centrifugal impeller |
| CN112177975A (en) * | 2020-10-29 | 2021-01-05 | 广东顺威精密塑料股份有限公司 | Staggered backward centrifugal wind wheel |
| CN112648232A (en) * | 2021-01-11 | 2021-04-13 | 泛仕达机电股份有限公司 | Backward centrifugal fan blade with staggered blades and backward centrifugal fan |
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