CN207975028U - Impeller, fan assembly and electric appliance - Google Patents
Impeller, fan assembly and electric appliance Download PDFInfo
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- CN207975028U CN207975028U CN201820153210.8U CN201820153210U CN207975028U CN 207975028 U CN207975028 U CN 207975028U CN 201820153210 U CN201820153210 U CN 201820153210U CN 207975028 U CN207975028 U CN 207975028U
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- end ring
- impeller
- fan assembly
- blade
- spiral case
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Abstract
The utility model discloses a kind of impeller, fan assembly and electric appliance, impeller includes：Two end ring and multiple blades, the multiple blade are connected between two end ring, and the outer edge of at least one end ring exceeds the outer edge of the blade on the direction from radially inner side to radial outside.Coordinated as a result, by two end ring and multiple blades, aerodynamic loss can be reduced, the working efficiency of fan assembly can be improved, also, noise can also be reduced.
Description
Technical field
The utility model is related to technical field of electric appliances, more particularly to a kind of impeller, fan assembly and electric appliance.
Background technology
The range hood overwhelming majority currently on the market uses multi-wing centrifugal fan.And the crucial skill of multi-wing centrifugal fan
Art is efficient, low noise pneumatic design.Present multi-wing centrifugal fan efficiency is generally relatively low, and air quantity, wind pressure are smaller, noise
Also corresponding larger, diameter influences smoke absorption effect and the experience of user.Therefore, the total head effect of multi-wing centrifugal fan how is improved
Rate, the key technology for reducing wind loss, reducing noise as multi-wing centrifugal fan.
In the related technology, the front and back end ring at existing multi-wing centrifugal fan impeller both ends is straight annulus shape, outside
Wide size and impeller blade outer diameter size are almost the same.At work, air-flow is from leaf for the multi-wing centrifugal fan of this structure
After wheel enters spiral case, due to circulation area sudden enlargement, to generate larger aerodynamic loss and eddy current crack.Simultaneously as
There are larger gaps with spiral case for wheel nose ring, and under the influence of pressure difference inside and outside impeller, fraction is passed through by impeller outlet
Impeller eye position is flowed back in gap between front end ring and spiral case, and air quantity leakage loss occurs, reduces the efficiency of fan assembly.
Utility model content
The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model carries
Go out a kind of impeller, which can reduce aerodynamic loss, can improve the working efficiency of fan assembly, can also reduce noise.
The utility model further proposes a kind of fan assembly.
The utility model further proposes a kind of electric appliance.
Impeller according to the present utility model includes：Two end ring and multiple blades, the multiple blade are connected to two institutes
Between stating end ring, the outer edge of at least one end ring exceeds the blade on the direction from radially inner side to radial outside
Outer edge.
Impeller according to the present utility model is coordinated by two end ring and multiple blades, can reduce aerodynamic loss, can be with
The working efficiency of fan assembly is improved, also, noise can also be reduced.
Optionally, a diameter of a of the end ring, the radial distance of the outer edge of the blade to the central axes of the impeller
For b/2, wherein a >=1.05b.
Further, two end ring beyond the blade it is outer peripheral beyond part have radially inner side to
The incremental incremental section of axial distance on the direction of radial outside.
Specifically, the outer peripheral part that exceeds of the blade that exceeds of at least one end ring is provided with to axially external
Inclined expansion side, the expansion side are corresponding with the incremental section.
Fan assembly according to the present utility model includes：Spiral case, above-mentioned impeller and motor, the impeller are set to described
In spiral case；The motor is set in the spiral case and for driving the impeller.
Optionally, there is the spiral case air inlet, the end ring to be enclosed adjacent to the air inlet, the spiral case or air-ducting ring
The choked flow piece extended towards the end ring is provided on the madial wall of the air inlet..
Further, the choked flow piece is ring-type.
Specifically, the end ring, which is provided with, expands side, and the choked flow piece is located between the air inlet and the expansion side.
Optionally, there is gap between the end of the choked flow piece and the end ring.
Electric appliance according to the present utility model, including above-mentioned fan assembly.
Description of the drawings
Fig. 1 is the schematic diagram according to the fan assembly of the utility model embodiment；
Fig. 2 is the schematic diagram that choked flow piece is provided with according to the fan assembly of the utility model embodiment；
Fig. 3 is the vertical view according to the fan assembly of the utility model embodiment；
Fig. 4 is the sectional view according to the fan assembly of the utility model embodiment；
Fig. 5 is the schematic diagram according to the impeller of the utility model embodiment；
Fig. 6-Fig. 9 is the schematic diagram according to four kinds of different embodiments on the expansion side of the impeller of the utility model embodiment.
Reference numeral：
Impeller 10；
First end ring 11；Second end ring 12；
Blade 2；It is incremented by section 3；Expand side 4；Diffusion space 5；
Fan assembly 20；
Spiral case 201；Air inlet 2011；
Motor 202；Choked flow piece 203.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on ... shown in the drawings
Or position relationship, be merely for convenience of describing the present invention and simplifying the description, do not indicate or imply the indicated device or
Element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as the limit to the utility model
System.In addition, defining " first ", the feature of " second " can explicitly or implicitly include one or more this feature.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
The impeller 10 according to the utility model embodiment is described in detail below with reference to Fig. 1-Fig. 9.
As shown in figs. 1 to 9, include according to the impeller of the utility model embodiment 10：Two end ring and multiple blades 2 are more
A blade 2 is connected between two end ring, and the outer edge of at least one end ring is on the direction from radially inner side to radial outside
Outer edge beyond blade 2, it is to be understood that on direction of the radially inner side to radial outside, the outer edge of end ring exceeds
The outer peripheral quantity of blade 2 can be one, or two, that is to say, that the outer edges of two end ring simultaneously from
Radially inner side exceeds the outer edge of blade 2 on the direction of radial outside.
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 5, may include according to the fan assembly 20 of the utility model embodiment：Spiral case
201, impeller 10 and motor 202, impeller 10 are set in spiral case 201, and motor 202 is set in spiral case 201, and motor 202
With a drive connection in two end ring, motor 202 is for driving impeller 10 to rotate, one and motor in two end ring
202 by rotating axis connection, and when motor 202 works, motor 202 can be rotated together with impeller 10, so as to realize
The purpose that fan assembly 20 works.
Specifically, as depicted in figs. 1 and 2, there is spiral case 201 air inlet 2011, end ring to be arranged adjacent to air inlet 2011.
Optionally, two end ring are respectively the first end ring 11 and the second end ring 12 to one kind, and there are one air inlets for the tool of spiral case 201
2011, wind can be entered by air inlet 2011 in spiral case 201, and the first end ring 11 is arranged adjacent to air inlet 2011, motor 202
It is fixedly installed with the second end ring 12, that is to say, that motor 202 and the second end ring 12 are sequentially connected, can be the power of motor 202
Pass to impeller 10, wherein the end ring of upper end is the first end ring 11, and the end ring of lower end is the second end ring 12.
Optionally, spiral case 201 has two air inlets 2011 setting up and down, the first end ring 11 and the second end ring to another kind
12 are respectively adjacent to the setting of lower air inlet 2011, and wind can be entered by air inlet 2011 in spiral case 201, and the first end ring 11 is adjacent
Nearly air inlet 2011 is arranged, and motor 202 and the second end ring 12 are fixedly installed, that is to say, that motor 202 and the second end ring 12 are driven
The power of motor 202, can be passed to impeller 10 by connection, wherein the end ring of upper end is the first end ring 11, and the end ring of lower end is
Second end ring 12.
When fan assembly 20 works, 10 high speed rotation of impeller under the driving of motor 202, air-flow by air inlet 2011 into
Enter impeller 10, then air-flow through blade 2 by the diffusion space 5 between the first end ring 11 and the second end ring 12, due to end ring
Outer edge on the direction from radially inner side to radial outside exceed blade 2 outer edge, can make in this way air-flow gently into
Enter in the inner cavity in spiral case 201, the aerodynamic loss of air-flow can be reduced, the working efficiency of fan assembly 20 can be improved, also,
Noise can also be reduced.
Coordinated as a result, by two end ring and multiple blades 2, aerodynamic loss can be reduced, fan assembly 20 can be improved
Working efficiency, also, noise can also be reduced.
Optionally, the radial distance of a diameter of a of end ring, outer edge to the central axes of impeller 10 of blade 2 are b/2,
In, a >=1.05b, being arranged such can ensure that the outer edge of end ring exceeds the outer edge of blade 2, it is ensured that the work of impeller 10
Make performance, and meeting the end ring of above-mentioned relation and blade 2 can make 10 overall structure of impeller suitable, and working efficiency
It is good to promote effect, excellent noise reduction effect.
Further, as depicted in figs. 1 and 2, two end ring are outer peripheral beyond partly in diameter beyond blade 2
The inwardly incremental incremental section 3 of axial distance on the direction of lateral radial outside, that is to say, that in two end ring beyond blade 2
Outer peripheral part, the distance between the first end ring 11 and the second end ring 12 become larger, can make in this way the first end ring 11 with
Gap between the inner wall of spiral case 201 reduces, and air-flow can be prevented by between the first end ring 11 and the inner wall of spiral case 201
Gap is back at the air inlet 2011 of impeller 10, so as to efficiently reduce the leakage of the reflux between impeller 10 and spiral case 201,
And then wind loss can be reduced, improve pneumatic efficiency.
Specifically, the outer peripheral part that exceeds of blade 2 that exceeds of at least one end ring is provided with to axially external inclined
Expand side 4, expansion side 4 is corresponding with section 3 is incremented by, it is to be understood that the outside fate of the first end ring 11 and the second end ring 12
It is not routed up to the axially external of impeller 10, it can be arc-shaped, linear or any other combined shaped to expand side 4, most
Afterwards so that the size for the non-flange plane of distance from top for expanding side 4 is indicated with letter c, c is more than 0.
Wherein, it as shown in fig. 6, expanding side 4 could be provided as linear type, may be set to be as shown in fig. 7, expanding side 4
Linear type+inner circle arc combination, as shown in figure 8, expanding side 4 may be arranged as inner circle arc, as shown in figure 9, expanding
Side 4 may be arranged as linear type and arc-shaped combined shaped, two end ring of the first end ring 11 and/or the second end ring 12
Expand side 4, the actual gap ruler of the first end ring 11 and/or the second end ring 12 and 201 inner wall of spiral case can be made inside spiral case 201
Very little reduction can stop the reflux of air.
In addition, two end ring structures of impeller 10, are utility model according to aerodynamic principle, can play reduction
Diffusion of gas stream loss, leakage loss, can promote pneumatic efficiency, reduce noise and other effects, also, show by experimental data
The first end ring and the second end ring of impeller, which are provided with, expands side 4, and 20 total pressure efficiency of fan assembly containing the impeller 10 promotes 2%
More than, lower noise 1.5dB or more.
Optionally, spiral case 201 or air-ducting ring are provided with towards end ring on the madial wall around air inlet 2011 and extend
Choked flow piece 203, choked flow piece 203 could be provided as ring-type, and choked flow piece 203 has the effect of stopping air return, can be into one
The reflux of step blocking air, so as to further prevent air quantity leakage loss.
Optionally, end ring, which is provided with, expands side 4, and choked flow piece 203 is located at air inlet 2011 and expands between side 4, sets in this way
The expansion side 4 set and choked flow piece 203 can preferably stop air from the gap between the first end ring 11 and the inner wall of spiral case 201
It is back at the air inlet 2011 of impeller 10, so as to further decrease air quantity leakage loss, and then can further be promoted
The working efficiency of fan assembly 20.
Further, there is gap, such setting can make choked flow piece between the end of choked flow piece 203 and two end ring
203 is more reasonable with the assembly of two end ring, so as to further promote the working performance of fan assembly 20.
According to the fan assembly 20 of the electric appliance of the utility model embodiment, including above-described embodiment, fan assembly 20 is installed
It is arranged on electric appliance, which can reduce aerodynamic loss, can improve the working efficiency of electric appliance, also, can also
Reduce noise when electrical work.
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 specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that：
Can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and objective, modification, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (10)
1. a kind of impeller, which is characterized in that including：Two end ring and multiple blades, the multiple blade are connected to described in two
Between end ring, the outer edge of at least one end ring exceeds the blade on the direction from radially inner side to radial outside
Outer edge.
2. impeller according to claim 1, which is characterized in that a diameter of a of the end ring, the outer edge of the blade arrive
The radial distance of the central axes of the impeller is b/2, wherein a >=1.05b.
3. according to the impeller described in any one of claim 1-2, which is characterized in that two end ring are beyond the blade
It is outer peripheral beyond part have radially inner side to
The incremental incremental section of axial distance on the direction of radial outside.
4. impeller according to claim 3, which is characterized in that at least one end ring exceeds the blade outer edge
Be provided with to axially external inclined expansion side beyond part, the expansions side is corresponding with the incrementally section.
5. a kind of fan assembly, which is characterized in that including：
Spiral case；
According to the impeller described in any one of claim 1-4, the impeller is set in the spiral case；
Motor, the motor are set in the spiral case and for driving the impeller.
6. fan assembly according to claim 5, which is characterized in that the spiral case has air inlet, the end ring neighbouring
The air inlet, the spiral case or air-ducting ring are provided on the madial wall around the air inlet to be extended towards the end ring
Choked flow piece.
7. fan assembly according to claim 6, which is characterized in that the choked flow piece is ring-type.
8. fan assembly according to claim 7, which is characterized in that the end ring, which is provided with, expands side, the choked flow piece
Between the air inlet and the expansion side.
9. fan assembly according to claim 7, which is characterized in that have between the end of the choked flow piece and the end ring
There is gap.
10. a kind of electric appliance, which is characterized in that include the fan assembly according to any one of claim 5-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820153210.8U CN207975028U (en) | 2018-01-29 | 2018-01-29 | Impeller, fan assembly and electric appliance |
| PCT/CN2018/122430 WO2019144736A1 (en) | 2018-01-29 | 2018-12-20 | Impeller, fan assembly and electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820153210.8U CN207975028U (en) | 2018-01-29 | 2018-01-29 | Impeller, fan assembly and electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207975028U true CN207975028U (en) | 2018-10-16 |
Family
ID=63766323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820153210.8U Active CN207975028U (en) | 2018-01-29 | 2018-01-29 | Impeller, fan assembly and electric appliance |
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| Country | Link |
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| CN (1) | CN207975028U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050102A (en) * | 2018-01-29 | 2018-05-18 | 美的集团股份有限公司 | Impeller, fan assembly and electric appliance |
| CN111237249A (en) * | 2018-11-28 | 2020-06-05 | 宁波方太厨具有限公司 | Fan system of range hood |
-
2018
- 2018-01-29 CN CN201820153210.8U patent/CN207975028U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050102A (en) * | 2018-01-29 | 2018-05-18 | 美的集团股份有限公司 | Impeller, fan assembly and electric appliance |
| CN111237249A (en) * | 2018-11-28 | 2020-06-05 | 宁波方太厨具有限公司 | Fan system of range hood |
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