CN106989034A - Centrifugal blower and the dust catcher with it - Google Patents
Centrifugal blower and the dust catcher with it Download PDFInfo
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- CN106989034A CN106989034A CN201710331122.2A CN201710331122A CN106989034A CN 106989034 A CN106989034 A CN 106989034A CN 201710331122 A CN201710331122 A CN 201710331122A CN 106989034 A CN106989034 A CN 106989034A
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- China
- Prior art keywords
- return channel
- diffuser
- centrifugal blower
- impeller
- air
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L5/00—Structural features of suction cleaners
- A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
- A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
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- 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
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- 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
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of centrifugal blower and the dust catcher with it, centrifugal blower includes：Housing, impeller, stationary vane assembly and motor.Housing has air inlet and air outlet, impeller is located in housing and neighbouring air inlet is set, stationary vane assembly is located in housing and positioned at the downstream of impeller, the air channel suitable for air current flow is limited between stationary vane assembly and the inwall of housing, the section that parallels to the axis in air channel is " U "-shaped, and motor is located at the downstream of stationary vane assembly and is connected with impeller.According to the centrifugal blower of the present invention, by the way that the section that parallels to the axis in the air channel limited between stationary vane assembly and housing is set into " U "-shaped, it can effectively reduce the loss produced during air-flow flows in air channel, and noise can be reduced.
Description
Technical field
The present invention relates to cleaner technology field, more particularly, to a kind of centrifugal blower and the dust catcher with it.
Background technology
The centrifugal blower of dust catcher is dust catcher core functional components, and energy-efficient, low noise is the important of its development
One of trend.Rational centrifugal blower pneumatic design and structure design can effectively lift dust catcher performance, reduction energy consumption, improve
Noise level and sound quality.The centrifugal blower of dust catcher in correlation technique, it is caused due to itself limitation of structure design
Air-flow loses larger during flowing, so that the noise for causing its high energy consumption and producing is larger.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the present invention propose it is a kind of from
Heart blower fan, the energy consumption of the centrifugal blower is low, noise is low.
The invention also provides a kind of dust catcher with above-mentioned centrifugal blower.
The centrifugal blower of embodiment according to a first aspect of the present invention, including：Housing, the housing has air inlet and air-out
Mouthful；Impeller, the impeller is located in the housing and the neighbouring air inlet is set；Stationary vane assembly, the stationary vane assembly is located at
In the housing and positioned at the downstream of the impeller, limited between the stationary vane assembly and the inwall of the housing suitable for air-flow
The air channel of flowing, the section that parallels to the axis in the air channel is " U "-shaped；Motor, the motor is located at the downstream of the stationary vane assembly
And be connected with the impeller.
Centrifugal blower according to embodiments of the present invention, by by the parallel of the air channel limited between stationary vane assembly and housing
Axis section sets " U "-shaped, can effectively reduce the loss produced during air-flow flows in air channel, and can drop
Low noise.
According to some alternative embodiments of the present invention, the stationary vane assembly includes：Vane diffuser, the vane diffuser
The neighbouring impeller is set, and the vane diffuser includes diffuser body and the multiple diffusions being located on the diffuser body
Blade, multiple diffusion blades are provided at circumferentially spaced and around the periphery of the impeller along the diffuser body；Backflow
Device, the return channel is located at the downstream of the vane diffuser, and the return channel includes return channel body and is located at the backflow
Multiple reflux blades on device body, the return channel body is connected with the diffuser body and constitutes the stationary vane assembly
Wheel hub, the multiple reflux blade being provided at circumferentially spaced along the return channel body, described in the direction of the return channel body
The wall of motor extends towards being tilted along the direction away from the air inlet on the direction at the center of the return channel body.By
This, by the way that the wall towards motor of return channel to be arranged to tilt to the inclined-plane of extension, can cause what is flowed out from " u "-shaped air channel
Air-flow is axial direction by radial transition under the guiding on above-mentioned inclined-plane, reduces passages losses, while being conducive to motor radiating.
Alternatively, the wall of the direction motor of the return channel body is formed as arcwall face.Thus, it is possible to further
Ground optimizes the wall configuration towards motor of return channel body, plays to the more preferable guiding function of air-flow.
Further, multiple diffusion blades are set adjacent to the periphery edge of the diffuser body, the diffuser sheet
The part being located between the two neighboring diffusion blade of body is formed as guide face, and the guide face is being directed away from the expansion
Tilt and extend along the direction away from the air inlet on the direction at the center of depressor body.Thus, be conducive to improving the gas of runner
Dynamic characteristic, reduces the flow losses of air-flow.
Alternatively, the guide face is formed as arcwall face.Thus, be further conducive to guiding the flowing of air-flow, enter one
Step ground reduces the flow losses of air-flow.
Alternatively, the angle between the Plane of rotation of the guide face and the impeller is α, and the α is met：α≤30 °,
The Plane of rotation is the plane vertical with the center of rotation axis of the impeller.Thus, by the tilt angle alpha of above-mentioned guide face
Limit within the above range, while reduction air-flow draws larger angle and turns to caused flow losses, can avoid because upper
The angle of inclination for stating guide face is excessive and the impact loss that causes.
Alternatively, the periphery edge of the protruding diffuser body in outer end of each diffusion blade, and/or each
The periphery edge of the protruding return channel body in outer end of the reflux blade.Thus, it is possible to extend the distance of air-flow acting,
Improve overall efficiency.
Alternatively, the part being located between the two neighboring diffusion blade on the periphery edge of the wheel hub is formed as cutting
Line between section, the outer end of the two neighboring diffusion blade is outer line, and the cut length is by the two neighboring diffusion
The outer end of one in blade is towards another extension in the two neighboring diffusion blade and is offset inwardly from the outer line.
Thus, using the area of passage for increasing air-flow by way of cutting, reducing flow velocity in the bend of vane diffuser and return channel
And downstream flow loss.
Further, one outer end in the two neighboring diffusion blade and the two neighboring diffusion blade
In the vertical line between another be intraconnections, the cut length is described another in the two neighboring diffusion blade
The middle separated time of the individual part being located between the outer line and the intraconnections.Thus, can be further by above-mentioned setting
Ground optimizing incision mode so that it is more reasonable that area of passage is set, so as to ensure vane diffuser to the same of airflow function
When reduce flow velocity and downstream flow loss.
According to some alternative embodiments of the present invention, the stationary vane assembly includes：Vane diffuser, the vane diffuser
The neighbouring impeller is set, and the vane diffuser includes diffuser body and the multiple diffusions being located on the diffuser body
Blade, multiple diffusion blades are provided at circumferentially spaced and around the periphery of the impeller along the diffuser body；Backflow
Device, the return channel is located at the downstream of the vane diffuser, and the return channel includes return channel body and is located at the backflow
Multiple reflux blades on device body, the return channel body is connected with the diffuser body and constitutes the stationary vane assembly
Use is additionally provided with wheel hub, the multiple reflux blade being provided at circumferentially spaced along the return channel body, the return channel body
In the mounting bracket for installing the motor, the mounting bracket is connected with the inner of the reflux blade.Thus, by that will be used for
The mounting bracket for installing motor is connected with the reflux blade of return channel, can facilitate the installation of motor and cause centrifugal blower
It is more compact, reasonable that overall structure is set.
Further, the mounting bracket is formed as column and smoothly transitted with the inner of the reflux blade to be connected.By
This so that mounting bracket it is simple in construction and easily processed into type.
The dust catcher of embodiment according to a second aspect of the present invention, including：According to above-mentioned first aspect embodiment of the invention
Centrifugal blower.
Dust catcher according to embodiments of the present invention, the above-mentioned centrifugal blower by setting, can improve the efficiency of dust catcher
And work noise can be lowered.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the part-structure profile of centrifugal blower according to embodiments of the present invention；
Fig. 2 is the schematic diagram of the stationary vane assembly of centrifugal blower according to embodiments of the present invention；
Fig. 3 is the sectional view of the stationary vane assembly of centrifugal blower according to embodiments of the present invention；
Fig. 4 is the schematic diagram of the vane diffuser of centrifugal blower according to embodiments of the present invention；
Fig. 5 is the schematic diagram of the wheel hub cutting mode of the stationary vane assembly of centrifugal blower according to embodiments of the present invention；
Fig. 6 is the schematic diagram of the return channel of centrifugal blower according to embodiments of the present invention.
Reference：
Housing 1, protecgulum 11, air inlet 111, rear baffle 12, air outlet 121,
Impeller 2, cover plate 21, ventilating opening 211, chassis 22, movable vane piece 23,
Stationary vane assembly 3, vane diffuser 31, diffuser body 311, diffusion blade 312, guide face 313, return channel 32,
Return channel body 321, wall 3211, reflux blade 322, mounting bracket 323, mounting hole 3231, wheel hub 33, cut length 331, outside
Line 332, intraconnections 333,
First paragraph 41, second segment 42, the 3rd section 43,
Motor 5.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as " interior ", " outer ", " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on
Orientation shown in the drawings or position relationship, are for only for ease of the description present invention and simplify description, rather than indicate or imply institute
The device or element of finger must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this hair
Bright limitation.In addition, defining " first ", one or more be somebody's turn to do can be expressed or be implicitly included to the feature of " second "
Feature.In the description of the invention, unless otherwise indicated, " multiple " are meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Centrifugal blower according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 6.
As shown in figs 1 to 6 (in Fig. 1 the direction of arrow be air current flow direction), embodiment according to a first aspect of the present invention
Centrifugal blower, including：Housing 1, impeller 2, stationary vane assembly 3 and motor 5.
Specifically, housing 1 has air inlet 111 and air outlet 121, and housing 1 can be in the shape of revolving body.Housing 1
The protecgulum 11 and rear baffle 12 being connected with each other can be included, wherein air inlet 111 is formed on protecgulum 11 and air outlet 121 is formed
On rear baffle 12.
Impeller 2 and stationary vane assembly 3 are each provided in housing 1, and wherein impeller 2 is set adjacent to air inlet 111, and impeller 2 can be wrapped
Include front and rear (fore-and-aft direction in reference picture 1) spaced cover plate 21 and chassis 22 and be located between cover plate 21 and chassis 22
Multiple movable vane pieces 23, cover plate 21 is provided with the ventilating opening 211 that is connected with air inlet 111.Stationary vane assembly 3 is located under impeller 2
Limited between trip (for example, in the example of fig. 1, stationary vane assembly 3 is located at the rear side of impeller 2), the inwall of stationary vane assembly 3 and housing 1
The air channel suitable for air current flow is made, motor 5 is located at the downstream of stationary vane assembly 3 and is connected with impeller 2 (for example, in Fig. 1 example
In, motor 5 is located at the rear side of stationary vane assembly 3 and positioned at the outside of housing 1).
Thus, when centrifugal blower works, the driving impeller 2 of motor 5 is rotated, and extraneous air is from air inlet 111 and ventilating opening
211 enter in impeller 2 and flow into above-mentioned air channel after accelerating through the pressurization of impeller 2, and airflow passes flow behind above-mentioned air channel from air outlet 121
Go out, a part of air-flow flowed out from air outlet 121 can radiate to motor 5, it is possible thereby to extend the use longevity of motor 5
Life.
Wherein, (" section that parallels to the axis in air channel " refers to along the rotation through impeller 2 in the section that parallels to the axis in above-mentioned air channel
Turn the section obtained by the plane cutting air channel of central axis) " U "-shaped (reference picture 1).Thus, it is possible to effectively reduce air-flow
The loss produced during being flowed in air channel, and noise can be reduced.
For example, in the example of fig. 1, the air channel of above-mentioned " u "-shaped includes：Before the front side wall and stationary vane assembly 3 of housing 1
Second segment 42 that the periphery wall of first paragraph 41, the perisporium by housing 1 and stationary vane assembly 3 that side is limited is limited, by housing 1
Rear wall and stationary vane assembly 3 limit the 3rd section 43 of trailing flank.Wherein, the first paragraph 41 and the 3rd in the air channel of " u "-shaped
43 radially extending approximately along stationary vane assembly 3 of section, the second segment 42 in the air channel of " u "-shaped is along the axially extending of stationary vane assembly 3, " U "
Between the first paragraph 41 and second segment 42 in the air channel of shape and " u "-shaped air channel the 3rd section of transition between 43 and second segment 42
Duan Junwei circular arcs.Thus, at the airflow passes air channel, due to being to use arc transition between each section of the air channel so that
The flowing of air-flow is more smoothly, solves the problem of air-flow turns to more stiff in air channel, reduces the flow losses of air-flow,
And the noise of air-flow generation can be reduced.
Alternatively, the second segment 42 in the air channel of " u "-shaped can be extended straight, and curved can also be extended.
Centrifugal blower according to embodiments of the present invention, passes through the flat of the air channel that will be limited between stationary vane assembly 3 and housing 1
Row axis section sets " U "-shaped, can effectively reduce the loss produced during air-flow flows in air channel, and can be with
Reduce noise.
According to some alternative embodiments of the present invention, reference picture 1- Fig. 6, stationary vane assembly 3 includes：Vane diffuser 31 and return
Flow device 32.The adjacent impeller 2 of vane diffuser 31 is set, and vane diffuser 31 includes diffuser body 311 and is located at diffuser sheet
Multiple diffusion blades 312 on body 311, multiple diffusion blades 312 are provided at circumferentially spaced and around leaf along diffuser body 311
The periphery of wheel 2, the quantitative range of diffusion blade 312 can be 17-30 pieces, and diffusion blade 312 can be arc or airfoil type, expand
Pressure blade 312 can use straight blade.Return channel 32 is located at the downstream of vane diffuser 31 (for example, showing in Fig. 1-Fig. 3
In example, return channel 32 is located at the rear side of vane diffuser 31), return channel 32 includes return channel body 321 and is located at return channel sheet
Multiple reflux blades 322 on body 321, return channel body 321 is connected with diffuser body 311 and constitutes the wheel of stationary vane assembly 3
Hub 33, multiple being provided at circumferentially spaced along return channel body 321 of reflux blade 322, the quantitative range of reflux blade 322 can be
7-15 pieces, reflux blade 322 can be arc or airfoil type, and reflux blade 322 can use straight blade.Alternatively, on
Stating diffuser body 311 and return channel body 321 can be integrally formed, i.e. the wheel hub 33 of stationary vane assembly 3 can be formed in one
Part, it is possible thereby to simplify the structure and moulding process of centrifugal blower.
Thus, when centrifugal blower works (reference picture 1), extraneous air enters in impeller 2 from air inlet 111, through impeller 2
Pressurization flows into the part being located between vane diffuser 31 and housing 1 in air channel, work of the air-flow through vane diffuser 31 after accelerating
Flowing can be caused to be changed into flaring flowing, the speed reduction of air-flow after, while the rotation point speed of a part of air-flow can be reclaimed
Spend for meridional velocity, be also beneficial to reduce the flow losses in downstream, so that diffusion and energy of the air-flow in vane diffuser 31
Enter return channel 32 in the presence of recovery.The effect of return channel 32 is the Radial Flow of air-flow reverting to axial flowing, from
The air-flow that return channel 32 flows out flows out from air outlet 121, and the air-flow of outflow can radiate to motor 5, thereby may be ensured that electricity
The efficient stable operation of machine 5.
Wherein, reference picture 1 and Fig. 3, the wall 3211 towards motor 5 of above-mentioned return channel body 321 is towards return channel sheet
Tilt and extend along the direction away from air inlet 111 on the direction at the center of body 321.Thus, by the way that the direction of return channel 32 is electric
The wall 3211 of machine 5 is arranged to tilt the inclined-plane of extension, and the air-flow from the air channel outflow of " u "-shaped can be caused on above-mentioned inclined-plane
Under guiding by radial transition for axially, reduce passages losses, while being conducive to motor 5 to radiate.
For example, in Fig. 1 and Fig. 3 example, the wall 3211 of return channel body 321 is by the outer of return channel body 321
Week is along to extension tilted backwards on the center position of return channel body 321 so that the air-flow flowed out from the air channel of " u "-shaped along time
Flow device body 321 wall 3211 flow during, can by air-flow by radial transition for axial direction while, can make to bring about the desired sensation
Stream is smoothly and soft in steering procedure, so that air-flow reduces flow losses while turning to.The air-flow is in mistake
Cross after axially flowing, to radiate to motor 5, during radiating to motor 5, while air-flow can be avoided
It is passed directly into the flow losses caused by resistance is larger in the stator and rotor sructure of motor 5.
Alternatively, reference picture 1 and Fig. 3, the wall 3211 towards motor 5 of return channel body 321 can be formed as arc
Face.Thus, it is possible to further optimize the shape of wall 3211 towards motor 5 of return channel body 321 so that the flowing of air-flow
It is more smoothly, soft, play to the more preferable guiding function of air-flow.
Further, the internal face towards return channel body 321 of housing 1 is formed as arcwall face, such as example in Fig. 1
In, the internal face of rear baffle 12 towards the return channel body 321 of housing 1 is formed as arcwall face.Thus, return channel body is passed through
The common guiding function of 321 arcwall face and the arcwall face of housing 1, can further make it that air current flow is more smoothly, and
So that it is preferably axial, reduction passages losses, while being conducive to motor 5 to radiate by radial transition that air-flow is more.
In some alternative embodiments of the present invention, reference picture 1, Fig. 2 and Fig. 4, multiple diffusion blades 312 are adjacent to diffuser
The periphery of body 311 is along setting, and the part being located between two neighboring diffusion blade 312 of diffuser body 311 is formed as leading
Stream interface 313, the guide face 313 is on the direction at center for being directed away from diffuser body 311 along the direction away from air inlet 111
Tilt extension.Thus, be conducive to improving the aerodynamic characteristic of runner, reduce the flow losses of air-flow.
For example, in Fig. 1, Fig. 2 and Fig. 4 example, above-mentioned guide face 313 is at the center by diffuser body 311 to expansion
Extension tilted backwards on the direction on the periphery edge of depressor body 311, thus, the air-flow after accelerating is pressurizeed through impeller 2 in flow direction
During the air channel for stating " u "-shaped, by the guiding function of the guide face 313, air-flow can be reduced caused by turning to acutely
Energy loss, while pneumatic noise can be reduced.Alternatively, above-mentioned guide face 313 can be formed as arcwall face.Thus, enter
Be conducive to one step guiding the flowing of air-flow, further reduce the flow losses of air-flow.
Alternatively, the angle between the Plane of rotation of above-mentioned guide face 313 and impeller 2 is α (reference picture 1), and α is met：α≤
30 °, Plane of rotation is the plane vertical with the center of rotation axis of impeller 2.Thus, by the tilt angle alpha of above-mentioned guide face 313
Limit within the above range, while the flow losses caused by air-flow is turned to because of larger angle are reduced, can avoid because upper
The angle of inclination for stating guide face 313 is excessive and the impact loss that causes.
For example, in the example of fig. 1, impeller 2 includes above-mentioned chassis 22, cover plate 21 and multiple movable vane pieces 23, its midsole
Disk 22 and cover plate 21 can be set parallel to each other and chassis 22 and cover plate 21 are parallel with the Plane of rotation of impeller 2, now above-mentioned α
For the angle between the plane where guide face 313 and chassis 22.
Alternatively, reference picture 4 and Fig. 6, the periphery of the protruding diffuser body 311 in outer end of each diffusion blade 312
Edge, and/or each periphery edge of the protruding return channel body 321 in outer end of reflux blade 322.For example, can only be each
The periphery edge of the protruding diffuser body 311 in outer end of diffusion blade 312, it is possible thereby to extend air-flow in vane diffuser 31
Work distance during upper flowing；For example, it is also possible to only be the protruding return channel body 321 in outer end of each reflux blade 322
Periphery edge, it is possible thereby to extend work distance when air-flow flows on return channel 32；For example, each diffusion blade 312
The periphery edge of the protruding diffuser body 311 in outer end, and the protruding return channel sheet in outer end of each reflux blade 322 simultaneously
The periphery edge of body 321, had thus both extended work distance when extension air-flow flows on vane diffuser 31, while also extending
Work distance when air-flow flows on return channel 32.Thus, it is possible to extend the distance of air-flow acting, overall efficiency is improved.
In some alternative embodiments of the present invention, reference picture 4 and Fig. 5, being located at for the periphery edge of wheel hub 33 are two neighboring
Part between diffusion blade 312 is formed as cut length 331, outer end (" the diffusion blade of two neighboring diffusion blade 312
312 outer end " refers to the one end at the remote center of diffuser body 311 of diffusion blade 312) between line be outer line 332,
Cut length 331 is by the outer end of one in two neighboring diffusion blade 312 towards another in two neighboring diffusion blade 312
Extension and the inwardly outer line 332 of (" inside " refers to the direction towards the center of diffuser body 311) deviation.Thus, lead to
The bend crossed in vane diffuser 31 and return channel 32 increases the area of passage of air-flow by the way of cutting, can reduce flow velocity
And downstream flow loss.
Further, the outer end of the said one in reference picture 5, two neighboring diffusion blade 312 and two neighboring diffusion
Above-mentioned vertical line between another in blade 312 is intraconnections 333, during cut length 331 is two neighboring diffusion blade 312
The middle separated time of another the above-mentioned part being located between outer line 332 and intraconnections 333.Above-mentioned outer line 332, intraconnections
333 and two neighboring diffusion blade 312 in above-mentioned another be located at part between outer line 332 and intraconnections 333 and be total to
With limit in triangle, i.e., above-mentioned outer line 332, intraconnections 333 and two neighboring diffusion blade 312 it is above-mentioned another
Part between outer line 332 and intraconnections 333 respectively constitutes tri- sides of a, b, c of the triangle, wherein corresponding to c sides
Center line be position where above-mentioned cut length 331.Thus, can further optimizing incision side by above-mentioned setting
Formula so that it is more reasonable that area of passage is set, so as to reduce flow velocity while vane diffuser 31 is ensured to airflow function
And downstream flow loss.
According to some alternative embodiments of the present invention, reference picture 1, Fig. 3 and Fig. 6, stationary vane assembly 3 include：Vane diffuser
31 and return channel 32.The adjacent impeller 2 of vane diffuser 31 is set, and vane diffuser 31 includes diffuser body 311 and is located at expansion
Multiple diffusion blades 312 on depressor body 311, multiple diffusion blades 312 along diffuser body 311 be provided at circumferentially spaced and
Around the periphery of impeller 2, return channel 32 is located at the downstream of vane diffuser 31, and return channel 32 includes return channel body 321 and set
Multiple reflux blades 322 on return channel body 321, return channel body 321 is connected with diffuser body 311 and constitutes stator blade
The wheel hub 33 of component 3, multiple being provided at circumferentially spaced along return channel body 321 of reflux blade 322.Wherein, return channel body 321
The mounting bracket 323 for being used for installing motor 5 is provided with, mounting bracket 323 is connected with the inner of reflux blade 322, mounting bracket
323 are provided with the mounting hole 3231 for being used for installing motor 5.Thus, by by for installing the mounting bracket 323 of motor 5 and returning
The reflux blade 322 for flowing device 32 is connected, and can facilitate the installation of motor 5 and so that the overall structure of centrifugal blower is set more
It is compact, reasonable.
Further, reference picture 6, mounting bracket 323 is formed as column and (described " to flow back with the inner of reflux blade 322
The inner of blade 322 " refers to the one end at the center towards return channel body 321 of reflux blade 322) smoothly transit connection.By
This so that mounting bracket 323 it is simple in construction and easily processed into type, and the outer end in air-flow along reflux blade 322 is (described
" outer end of reflux blade 322 " refers to the one end at the center of the remote return channel body 321 of reflux blade 322) it is inwardly (described
" inside " refers to the direction towards the center of return channel body 321) when flowing to the inner of reflux blade 322, due to installing branch
The inner of frame 323 and reflux blade 322 smoothly transits, it is ensured that the smoothness of air current flow, and can reduce noise.
The dust catcher of embodiment according to a second aspect of the present invention, including：According to above-mentioned first aspect embodiment of the invention
Centrifugal blower.
Dust catcher according to embodiments of the present invention, the above-mentioned centrifugal blower by setting, can improve the efficiency of dust catcher
And work noise can be lowered.
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 are described
Structure, material or feature are contained at least one embodiment of the present invention or example.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can in an appropriate manner be combined in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (12)
1. a kind of centrifugal blower, it is characterised in that including：
Housing, the housing has air inlet and air outlet；
Impeller, the impeller is located in the housing and the neighbouring air inlet is set；
Stationary vane assembly, the stationary vane assembly is located in the housing and positioned at the downstream of the impeller, the stationary vane assembly and institute
The air channel suitable for air current flow is limited between the inwall for stating housing, the section that parallels to the axis in the air channel is " U "-shaped；
Motor, the motor is located at the downstream of the stationary vane assembly and is connected with the impeller.
2. centrifugal blower according to claim 1, it is characterised in that the stationary vane assembly includes：
Vane diffuser, the vane diffuser is set adjacent to the impeller, the vane diffuser include diffuser body and
It is located at multiple diffusion blades on the diffuser body, multiple diffusion blades are along the circumferentially-spaced of the diffuser body
Set and around the periphery of the impeller；
Return channel, the return channel is located at the downstream of the vane diffuser, and the return channel includes return channel body and is located at
Multiple reflux blades on the return channel body, the return channel body is connected with the diffuser body and constituted described quiet
The wheel hub of leaf component, the multiple reflux blade being provided at circumferentially spaced along the return channel body, the return channel body
Tilted on towards the wall of the motor towards the direction at the center of the return channel body along the direction away from the air inlet
Extension.
3. centrifugal blower according to claim 2, it is characterised in that the wall of the direction motor of the return channel body
Face is formed as arcwall face.
4. centrifugal blower according to claim 2, it is characterised in that multiple diffusion blades are adjacent to the diffuser sheet
The periphery of body is along setting, and the part being located between the two neighboring diffusion blade of the diffuser body is formed as water conservancy diversion
Face, the guide face is tilted on the direction at center for being directed away from the diffuser body along the direction away from the air inlet
Extension.
5. centrifugal blower according to claim 4, it is characterised in that the guide face is formed as arcwall face.
6. centrifugal blower according to claim 4, it is characterised in that the Plane of rotation of the guide face and the impeller it
Between angle be α, the α is met：α≤30 °, the Plane of rotation is put down for vertical with the center of rotation axis of the impeller
Face.
7. centrifugal blower according to claim 2, it is characterised in that the protruding institute in outer end of each diffusion blade
State the periphery edge of diffuser body, and/or each periphery of the protruding return channel body in outer end of the reflux blade
Edge.
8. centrifugal blower according to claim 2, it is characterised in that the periphery edge of the wheel hub is located at two neighboring institute
State the part between diffusion blade and be formed as the line between cut length, the outer end of the two neighboring diffusion blade for outer company
Line, the cut length is by the outer end of one in the two neighboring diffusion blade towards in the two neighboring diffusion blade
Another extends and is offset inwardly from the outer line.
9. centrifugal blower according to claim 8, it is characterised in that one in the two neighboring diffusion blade
Outer end and the two neighboring diffusion blade in the vertical line between another be intraconnections, the cut length is adjacent
The middle separated time of another the part being located between the outer line and the intraconnections in two diffusion blades.
10. centrifugal blower according to claim 1, it is characterised in that the stationary vane assembly includes：
Vane diffuser, the vane diffuser is set adjacent to the impeller, the vane diffuser include diffuser body and
It is located at multiple diffusion blades on the diffuser body, multiple diffusion blades are along the circumferentially-spaced of the diffuser body
Set and around the periphery of the impeller；
Return channel, the return channel is located at the downstream of the vane diffuser, and the return channel includes return channel body and is located at
Multiple reflux blades on the return channel body, the return channel body is connected with the diffuser body and constituted described quiet
The wheel hub of leaf component, the multiple reflux blade being provided at circumferentially spaced along the return channel body,
The return channel body is provided with the mounting bracket for being used for installing the motor, the mounting bracket and the reflux blade
The inner be connected.
11. centrifugal blower according to claim 10, it is characterised in that the mounting bracket be formed as column and with it is described
The inner of reflux blade smoothly transits connection.
12. a kind of dust catcher, it is characterised in that including：Centrifugal blower according to any one of claim 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710331122.2A CN106989034B (en) | 2017-05-11 | 2017-05-11 | Centrifugal fan and dust collector with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710331122.2A CN106989034B (en) | 2017-05-11 | 2017-05-11 | Centrifugal fan and dust collector with same |
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| Publication Number | Publication Date |
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| CN106989034A true CN106989034A (en) | 2017-07-28 |
| CN106989034B CN106989034B (en) | 2020-05-08 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710331122.2A Active CN106989034B (en) | 2017-05-11 | 2017-05-11 | Centrifugal fan and dust collector with same |
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| CN (1) | CN106989034B (en) |
Cited By (5)
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| CN110617230A (en) * | 2019-09-09 | 2019-12-27 | 浙江奥正机电技术有限公司 | Centrifugal fan of dust collector |
| WO2020253093A1 (en) * | 2019-06-20 | 2020-12-24 | 苏州工业园区星德胜电机有限公司 | High-efficiency dry and wet dual-use fan |
| CN112806902A (en) * | 2019-11-18 | 2021-05-18 | 珠海格力电器股份有限公司 | Motor and dust catcher |
| WO2022134964A1 (en) * | 2020-12-25 | 2022-06-30 | 广东美的白色家电技术创新中心有限公司 | Fan assembly and vacuum cleaner |
| CN118019271A (en) * | 2024-04-09 | 2024-05-10 | 英飞同仁(江苏)风机有限公司 | Reinforcing radiating EC fan electron device protecting cover |
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| CN118019271A (en) * | 2024-04-09 | 2024-05-10 | 英飞同仁(江苏)风机有限公司 | Reinforcing radiating EC fan electron device protecting cover |
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|---|---|
| CN106989034B (en) | 2020-05-08 |
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Effective date of registration: 20201223 Address after: 528311 4 Global Innovation Center, industrial road, Beijiao Town, Shunde District, Foshan, Guangdong, China Patentee after: GUANGDONG MEIDI WHITE HOUSEHOLD ELECTRICAL APPLIANCE TECHNOLOGY INNOVATION CENTER Co.,Ltd. Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311, 26-28, B District, Mei headquarters building, 6 Mei Road, Beijiao Town, Shunde District, Foshan, Guangdong. Patentee before: MIDEA GROUP Co.,Ltd. |