CN108050102A - Impeller, fan assembly and electric appliance - Google Patents
Impeller, fan assembly and electric appliance Download PDFInfo
- Publication number
- CN108050102A CN108050102A CN201810085632.0A CN201810085632A CN108050102A CN 108050102 A CN108050102 A CN 108050102A CN 201810085632 A CN201810085632 A CN 201810085632A CN 108050102 A CN108050102 A CN 108050102A
- Authority
- CN
- China
- Prior art keywords
- end ring
- impeller
- fan assembly
- blade
- spiral case
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- 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
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Abstract
The invention 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 work efficiency of fan assembly can be improved, also, noise can also be reduced.
Description
Technical field
The present invention relates 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 employs multi-wing centrifugal fan.And the crucial skill of multi-wing centrifugal fan
Art is the efficient, pneumatic design of low noise.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 reduces wind loss, reduces key technology of the noise as multi-wing centrifugal fan.
In correlation technique, the front and rear 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 basically identical.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, so as to generate larger aerodynamic loss and eddy current crack.Simultaneously as
Wheel nose ring is with spiral case there are larger gap, and under the influence of the pressure differential 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, and reduces the efficiency of fan assembly.
The content of the invention
It is contemplated that at least solve one of technical problem in the prior art.For this purpose, the present invention proposes a kind of leaf
Wheel, the impeller can reduce aerodynamic loss, can improve the work efficiency of fan assembly, can also reduce noise.
The present invention further proposes a kind of fan assembly.
The present invention further proposes a kind of electric appliance.
Impeller according to the present invention includes：Two end ring and multiple blades, the multiple blade are connected to two ends
Between ring, the outer edge of at least one end ring exceeds the outer of the blade on the direction from radially inner side to radial outside
Edge.
Impeller according to the present invention is coordinated by two end ring and multiple blades, can reduce aerodynamic loss, can improve
The work efficiency of fan assembly, 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, at least one end ring is outer peripheral oriented axially external beyond partly setting beyond the blade
Inclined expansion side, the expansion side are corresponding with the incremental section.
Fan assembly according to the present invention includes：Spiral case, above-mentioned impeller and motor, the impeller are arranged at the spiral case
It is interior；The motor is arranged in the spiral case and for driving the impeller.
Optionally, the spiral case has air inlet, and the end ring is being 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 invention, including above-mentioned fan assembly.
Description of the drawings
Fig. 1 is the schematic diagram of fan assembly according to embodiments of the present invention；
Fig. 2 is the schematic diagram that fan assembly according to embodiments of the present invention is provided with choked flow piece；
Fig. 3 is the top view of fan assembly according to embodiments of the present invention；
Fig. 4 is the sectional view of fan assembly according to embodiments of the present invention；
Fig. 5 is the schematic diagram of impeller according to embodiments of the present invention；
Fig. 6-Fig. 9 is the schematic diagram of four kinds of different embodiments on the expansion side of impeller according to embodiments of the present invention.
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 embodiment
The embodiment of the present invention is 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 has the function of same or like element.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instructions such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be based on orientation shown in the drawings or
Position relationship is for only for ease of the description present invention and simplifies description rather than instruction or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, limit
Surely there is " first ", one or more this feature can be expressed or be implicitly included to the feature of " second ".The present invention's
In description, unless otherwise indicated, " multiple " are meant that two or more.
In the description of the present 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；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Impeller 10 according to embodiments of the present invention is described in detail below with reference to Fig. 1-Fig. 9.
As shown in Fig. 1-Fig. 9, impeller 10 according to embodiments of the present invention includes：Two end ring and multiple blades 2, Duo Geye
Piece 2 is connected between two end ring, and the outer edge of at least one end ring exceeds on the direction from radially inner side to radial outside
The outer edge of blade 2 is, it is necessary to explain, on direction of the radially inner side to radial outside, the outer edge of end ring exceeds blade 2
Outer peripheral quantity can be one, or two, that is to say, that the outer edges of two end ring is simultaneously inside from footpath
Exceed the outer edge of blade 2 on the direction of lateral radial outside.
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 5, fan assembly 20 according to embodiments of the present invention can include：Spiral case 201,
Impeller 10 and motor 202, impeller 10 are arranged in spiral case 201, and motor 202 is arranged in spiral case 201, and motor 202 and two
A drive connection in a end ring, for motor 202 for impeller 10 to be driven to rotate, one in two end ring is logical with motor 202
Rotation axis connection is crossed, when motor 202 works, motor 202 can together be rotated with impeller 10, so as to realize blower fan group
The purpose that part 20 works.
Specifically, as depicted in figs. 1 and 2, spiral case 201 has air inlet 2011, and end ring is set 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 set adjacent to air inlet 2011, motor 202
It is fixedly installed with the second end ring 12, that is to say, that motor 202 is sequentially connected with the second end ring 12, can be the power of motor 202
Impeller 10 is passed to, 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, which are respectively adjacent to lower air inlet 2011, is set, 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 set, and motor 202 is fixedly installed with the second end ring 12, that is to say, that motor 202 is driven with the second end ring 12
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, impeller 10 rotates at a high speed 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 so make air-flow gently into
Enter in the inner cavity in spiral case 201, the aerodynamic loss of air-flow can be reduced, the work 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
Work efficiency, also, noise can also be reduced.
Optionally, a diameter of a of end ring, the radial distance of outer edge to the central axes of impeller 10 of blade 2 is 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 meet the end ring of above-mentioned relation and blade 2 so that 10 overall structure of impeller is suitable, and work efficiency
It is good to promote effect, excellent noise reduction effect.
Further, as depicted in figs. 1 and 2, two end ring have beyond part in footpath beyond the outer peripheral of 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 so make the first end ring 11 with
Gap between the inner wall of spiral case 201 reduces, and can prevent air-flow 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, at least one end ring is outer peripheral oriented axially external inclined beyond partly setting beyond blade 2
Expand side 4, it is corresponding with being incremented by section 3, it is necessary to explain, the outside fate of the first end ring 11 and the second end ring 12 to expand side 4
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 represented with letter c, c is more than 0.
Wherein, as shown in fig. 6, expanding side 4 could be provided as linear pattern, may be set to be as shown in fig. 7, expanding side 4
Linear pattern+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 pattern 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, invent according to aerodynamic principle, can play reduction air-flow
Divergence loss, leakage loss, can promote pneumatic efficiency, reduce noise and other effects, also, show impeller by experimental data
The first end ring and the second end ring be provided with and expand side 4,20 total pressure efficiency of fan assembly containing the impeller 10 promoted 2% with
On, more than lower noise 1.5dB.
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 for stopping air return, can be into one
Step stops the reflux of 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, so sets
The expansion side 4 put and choked flow piece 203 can preferably stop gap of the air 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 reduce air quantity leakage loss, and then can further be promoted
The work 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 assembling of two end ring, so as to further promote the working performance of fan assembly 20.
Electric appliance according to embodiments of the present invention, the fan assembly 20 including above-described embodiment, 20 installation settings of fan assembly
On electric appliance, which can reduce aerodynamic loss, can improve the work efficiency of electric appliance, also, can also reduce
Noise during 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 to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment of the present invention or example.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can in an appropriate manner combine 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 of the present invention and objective 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 (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 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
Beyond part, oriented axially external inclined expansion side is set, the expansion 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 any one of claim 1-4, the impeller is arranged in the spiral case；
Motor, the motor are arranged 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, and the end ring is neighbouring
The air inlet, the spiral case or air-ducting ring are provided with what is extended towards the end ring on the madial wall around the air inlet
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 including the fan assembly according to any one of claim 5-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810085632.0A CN108050102A (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 |
|---|---|---|---|
| CN201810085632.0A CN108050102A (en) | 2018-01-29 | 2018-01-29 | Impeller, fan assembly and electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108050102A true CN108050102A (en) | 2018-05-18 |
Family
ID=62125014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810085632.0A Pending CN108050102A (en) | 2018-01-29 | 2018-01-29 | Impeller, fan assembly and electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108050102A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019144736A1 (en) * | 2018-01-29 | 2019-08-01 | 美的集团股份有限公司 | Impeller, fan assembly and electrical appliance |
| CN110185634A (en) * | 2019-06-25 | 2019-08-30 | 宁波奥克斯电气股份有限公司 | A kind of centrifugal blower and air conditioner |
| 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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|---|---|---|---|---|
| CN101086265A (en) * | 2006-06-06 | 2007-12-12 | 何长胜 | Centrifugal high pressure fan |
| US20080279681A1 (en) * | 2005-03-31 | 2008-11-13 | Mitsubishi Heavy Industries, Ltd. | Centrifugal Blower |
| CN201535267U (en) * | 2009-09-30 | 2010-07-28 | 美的集团有限公司 | Fan structure of range hood |
| CN201588817U (en) * | 2009-12-08 | 2010-09-22 | 美的集团有限公司 | Centrifugal fan for range hood |
| CN203867986U (en) * | 2014-04-25 | 2014-10-08 | 广东美的制冷设备有限公司 | Shell assembly used for centrifugal fan, centrifugal fan and refrigeration equipment |
| CN106762818A (en) * | 2017-03-29 | 2017-05-31 | 广东美的厨房电器制造有限公司 | Wind wheel, blower fan for range hood and the range hood with it |
| CN207975028U (en) * | 2018-01-29 | 2018-10-16 | 广东美的白色家电技术创新中心有限公司 | Impeller, fan assembly and electric appliance |
-
2018
- 2018-01-29 CN CN201810085632.0A patent/CN108050102A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080279681A1 (en) * | 2005-03-31 | 2008-11-13 | Mitsubishi Heavy Industries, Ltd. | Centrifugal Blower |
| CN101086265A (en) * | 2006-06-06 | 2007-12-12 | 何长胜 | Centrifugal high pressure fan |
| CN201535267U (en) * | 2009-09-30 | 2010-07-28 | 美的集团有限公司 | Fan structure of range hood |
| CN201588817U (en) * | 2009-12-08 | 2010-09-22 | 美的集团有限公司 | Centrifugal fan for range hood |
| CN203867986U (en) * | 2014-04-25 | 2014-10-08 | 广东美的制冷设备有限公司 | Shell assembly used for centrifugal fan, centrifugal fan and refrigeration equipment |
| CN106762818A (en) * | 2017-03-29 | 2017-05-31 | 广东美的厨房电器制造有限公司 | Wind wheel, blower fan for range hood and the range hood with it |
| CN207975028U (en) * | 2018-01-29 | 2018-10-16 | 广东美的白色家电技术创新中心有限公司 | Impeller, fan assembly and electric appliance |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019144736A1 (en) * | 2018-01-29 | 2019-08-01 | 美的集团股份有限公司 | Impeller, fan assembly and electrical appliance |
| CN111237249A (en) * | 2018-11-28 | 2020-06-05 | 宁波方太厨具有限公司 | Fan system of range hood |
| CN110185634A (en) * | 2019-06-25 | 2019-08-30 | 宁波奥克斯电气股份有限公司 | A kind of centrifugal blower and air conditioner |
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