CN104389816B - Centrifugal impeller and centrifugal fan - Google Patents
Centrifugal impeller and centrifugal fan Download PDFInfo
- Publication number
- CN104389816B CN104389816B CN201410597608.7A CN201410597608A CN104389816B CN 104389816 B CN104389816 B CN 104389816B CN 201410597608 A CN201410597608 A CN 201410597608A CN 104389816 B CN104389816 B CN 104389816B
- Authority
- CN
- China
- Prior art keywords
- centrifugal impeller
- blade
- centrifugal
- section
- impeller
- 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.)
- Active
Links
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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
- F04D29/30—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
- F04D29/663—Sound attenuation
-
- 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
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a centrifugal impeller and a centrifugal fan. The centrifugal impeller according to the invention comprises a hub and a plurality of blades, each blade having a plurality of transverse cross-sections perpendicular to the axial direction of the centrifugal impeller, the profiles of the plurality of transverse cross-sections comprising a plurality of airfoil-shaped profiles. According to the centrifugal impeller and the centrifugal fan, the plurality of transverse sections of the blades perpendicular to the axial direction of the centrifugal impeller comprise the plurality of wing-shaped molded lines, so that the blades have better pneumatic performance, the impact of airflow on the blades is reduced, and the noise of the centrifugal impeller during working is effectively reduced.
Description
Technical field
The present invention relates to blower fields, in particular to a kind of centrifugal impeller and centrifugal blower.
Background technique
Centrifugal impeller is widely used in industrial every profession and trade as a kind of fan important in heat-exchange ventilating system.
In air conditioner ventilation field, centrifugal impeller is used as the heat exchange blower fan of cabinet type air conditioner indoor machine more.
In the prior art, the design experiences of centrifugal impeller are typically all and are led based on industrial ventilation field in industrial ventilation
Domain, the design objective major concern drafting efficiency of centrifugal impeller；And in field of air conditioning, pursuit with people to comfortably living,
The performance indicator of air-conditioning noise is required to be increasingly stringenter, centrifugal impeller design noise specification is put forward higher requirements.Centrifugation
The vane type line of impeller is very big to impeller noise effect, conventional centrifugal profile of impeller vane, in order to which industry is easily manufactured, usually adopts
It most preferably walks always to design vane type line in blade passage with simple circular arc type or board-type, and not according to air-flow.
Summary of the invention
The present invention is intended to provide a kind of centrifugal impeller and centrifugal blower for reducing noise.
The present invention provides a kind of centrifugal impeller, including wheel hub and multiple blades, each blade has perpendicular to centrifugation leaf
Axial multiple transversal cross-sections of wheel, the molded line of multiple transversal cross-sections includes a variety of wing molded line.
Further, a variety of wing molded line include NACA0009 and NACA0016.
Further, it smoothly transits between multiple transversal cross-sections.
Further, multiple blades use porous fibre metal material.
Further, each blade has the axial longitudinal cross-section for being parallel to centrifugal impeller, and longitudinal cross-section is in serpentine.
Further, outside by the center axis of centrifugal impeller, the amplitude of the longitudinal cross-section of the serpentine of blade is gradually increased.
Further, each transversal cross-section has blade middle line, and blade middle line is straight line or camber line.
The present invention also provides a kind of centrifugal blower, including motor and centrifugal impeller, centrifugal impeller is centrifugation leaf above-mentioned
Wheel.
Centrifugal impeller and centrifugal blower according to the present invention, by making blade perpendicular to axial multiple cross of centrifugal impeller
Include a variety of wing molded line to section, so that blade has better aeroperformance, reduces impact of the air-flow to blade, effectively
Reduce noise when centrifugal impeller work.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the operation principle schematic diagram of centrifugal impeller according to the present invention；
Fig. 2 is the air-flow flow schematic diagram of blade according to the present invention；
Fig. 3 is flow schematic diagram of the air-flow around blade of centrifugal impeller according to the present invention；
Fig. 4 is the schematic perspective view of centrifugal impeller according to the present invention；
Fig. 5 is two projection signals in the axial direction in multiple transversal cross-sections of centrifugal impeller according to the present invention
Figure；
Fig. 6 is the schematic perspective view of multiple blades of centrifugal impeller according to the present invention；
Fig. 7 is the schematic perspective view of a blade in Fig. 6.
Description of symbols:
10, wheel hub；20, blade；21, transversal cross-section；22, longitudinal cross-section；23, blade middle line.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Fig. 1 to 7, centrifugal impeller according to the present invention, including wheel hub 10 and multiple blades 20, each blade 20 have
There are axial multiple transversal cross-sections 21 perpendicular to centrifugal impeller, the molded line of multiple transversal cross-sections 21 includes a variety of wing molded line,
By the present invention in that blade includes a variety of wing molded line, i.e., each leaf perpendicular to axial multiple transversal cross-sections 21 of centrifugal impeller
Piece 20 uses a variety of wing molded line, so that blade has better aeroperformance, reduces impact of the air-flow to blade, effectively drops
Noise when low centrifugal impeller works.
Specifically, as shown in connection with fig. 1 centrifugal impeller working principle and Fig. 3 air-flow flow schematic diagram, air-flow by axial direction into
Enter, turn again to 90 °, is radially discharged by impeller.For air-flow during blades flows, air-flow relative vane surface has certain rush
Impact loss is caused at angle, and impacts blade and generate certain noise.When the molded line of blade 20 is wing molded line, air-flow is by diameter
To blade passage (channel between two neighboring blade) is entered, relative motion of the air-flow in runner can be seen as air-flow around blade
Flow Around can be equivalent to a flow regime of the air-flow around aircraft wing in each axial position of blade 20.Fly
Machine runs extreme high reliability, it is desirable that its wing Profile Design must have extraordinary gas as transatmospheric vehicle
Dynamic performance, therefore the wing Profile Design of aircraft is applied on centrifugal impellers blades Profile Design, borrow the good gas of wing molded line
Dynamic performance, so that the aeroperformance that centrifugal impeller has had.
Further, in conjunction with shown in Fig. 2 and Fig. 3, since in air-flow, in same runner, axially different position air-flow flows
It is inconsistent, so as to select corresponding wing molded line, Neng Goujin according to the air-flow of each axial position (i.e. transversal cross-section 21)
Improve air-flow flow phenomenon in impeller channel to one step, obtains higher impeller aeroperformance.Preferably, a variety of wing molded line it
Between part by three-dimensional fitting, smoothly transit, to form complete blade 20, can further improve impeller channel
Phenomena such as interior flow separation, blade surface boundary layer separation, and then improve the aerodynamic noise of impeller.
The molded line of two transversal cross-sections as shown in Figure 5 projects, one of transversal cross-section using NACA0009, another
Transversal cross-section uses NACA0016, and corresponding wing molded line is selected according to runner interior air-flow flow behavior, makes air-flow as far as possible
When around blades flows, air-flow relative velocity in blade passage is made to reduce air-flow to blade to the angle of attack 0 of blade surface as far as possible
Impact loss, and reduce the noise that gas shock blade generates, air-flow occurs boundary layer point around blade suction surface side less as far as possible
From phenomenon.
Preferably, as shown in Figure 6 and Figure 7, each blade 20 has the axial longitudinal cross-section 22 for being parallel to centrifugal impeller,
Longitudinal cross-section 22 is in serpentine, can reduce turbulence noise.It is highly preferred that the center axis by centrifugal impeller is outside, blade 20
The amplitude of the longitudinal cross-section 22 of serpentine is gradually increased, i.e., the longitudinal cross-section 22 of blade 20 is from center axis gradually by approximate slab mistake
It crosses to serpentine, using above-mentioned design, on the one hand facilitates the air-flow radial inflow that axially flows into the stream between two neighboring blade
In road；On the other hand, turbulence noise can further be reduced.
It is highly preferred that multiple blades 20 are using porous with sqouynd absorption lowering noise effect in order to further reduce noise
The fibre metal material of property.
As shown in connection with fig. 2, each transversal cross-section 21 has blade middle line 23 (straight line AB in Fig. 2), and blade middle line 23 is straight
Line or camber line.Corresponding profile thickness is superimposed on blade middle line 23, so that aerofoil profile molded line is formed, so that blade has
There are the draft capacity of common blade, and the aeroperformance with airfoil fan, reduces noise.
The present invention also provides a kind of centrifugal blower, including motor and centrifugal impeller, centrifugal impeller is centrifugation leaf above-mentioned
Wheel reduces centrifugal blower noise so as to be effectively reduced impact of the air-flow to blade, promotes fan efficiency.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
Centrifugal impeller and centrifugal blower according to the present invention, by making blade perpendicular to axial multiple cross of centrifugal impeller
Include a variety of wing molded line to section, so that blade has better aeroperformance, reduces impact of the air-flow to blade, effectively
Reduce noise when centrifugal impeller work.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of centrifugal impeller, including wheel hub (10) and multiple blades (20), which is characterized in that each blade (20) has
Perpendicular to axial multiple transversal cross-sections (21) of the centrifugal impeller, the molded line of the multiple transversal cross-section (21) includes a variety of
Wing molded line, each blade (20) use a variety of wing molded line；
Each blade (20) has the axial longitudinal cross-section (22) for being parallel to the centrifugal impeller, the longitudinal cross-section
It (22) is in serpentine, the center axis by the centrifugal impeller is outside, the longitudinal cross-section (22) of the serpentine of the blade (20)
Amplitude be gradually increased；
A variety of wing molded line include NACA0009 and NACA0016；
It smoothly transits between the multiple transversal cross-section (21)；
Each transversal cross-section (21) has blade middle line (23), and the blade middle line (23) is straight line or camber line.
2. centrifugal impeller according to claim 1, which is characterized in that
The multiple blade (20) uses porous fibre metal material.
3. a kind of centrifugal blower, including motor and centrifugal impeller, which is characterized in that the centrifugal impeller is claims 1 or 2 institute
The centrifugal impeller stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410597608.7A CN104389816B (en) | 2014-10-29 | 2014-10-29 | Centrifugal impeller and centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410597608.7A CN104389816B (en) | 2014-10-29 | 2014-10-29 | Centrifugal impeller and centrifugal fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104389816A CN104389816A (en) | 2015-03-04 |
| CN104389816B true CN104389816B (en) | 2019-03-12 |
Family
ID=52607762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410597608.7A Active CN104389816B (en) | 2014-10-29 | 2014-10-29 | Centrifugal impeller and centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104389816B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3038552B1 (en) | 2013-09-01 | 2020-08-12 | Carbofix In Orthopedics LLC | Composite material spinal implant |
| FR3086889B1 (en) * | 2018-10-05 | 2023-04-14 | Faurecia Interieur Ind | SHUTTER FOR VENTILATION DEVICE AND CORRESPONDING VENTILATION DEVICE |
| CN114738317B (en) * | 2022-05-10 | 2024-03-26 | 浙江尚扬通风设备有限公司 | Impeller assembly for low-loss centrifugal fan and fan with impeller assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2252045Y (en) * | 1995-12-29 | 1997-04-16 | 任国需 | Double-impeller propeller for suspension water curtain type dust removal and desulfurization device |
| CN101737357A (en) * | 2008-11-05 | 2010-06-16 | 中国船舶重工集团公司第七○三研究所 | Centrifugal fan for switching on or off gas circulation |
| CN102141051A (en) * | 2011-05-06 | 2011-08-03 | 美的集团有限公司 | Centrifugal fan impeller of range hood |
| CN102358420A (en) * | 2011-07-29 | 2012-02-22 | 中国科学院长春光学精密机械与物理研究所 | Attitude transforming aircraft |
| CN204299949U (en) * | 2014-10-29 | 2015-04-29 | 珠海格力电器股份有限公司 | Centrifugal impeller and centrifugal fan |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7713030B2 (en) * | 2005-12-12 | 2010-05-11 | International Business Machines Corporation | Fan with improved heat dissipation |
| KR101977939B1 (en) * | 2012-11-13 | 2019-05-14 | 엘지전자 주식회사 | A centrifugal fan and an air conditioner utilizing it |
| CN203717436U (en) * | 2013-08-15 | 2014-07-16 | 周浙君 | Range hood wind wheel |
-
2014
- 2014-10-29 CN CN201410597608.7A patent/CN104389816B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2252045Y (en) * | 1995-12-29 | 1997-04-16 | 任国需 | Double-impeller propeller for suspension water curtain type dust removal and desulfurization device |
| CN101737357A (en) * | 2008-11-05 | 2010-06-16 | 中国船舶重工集团公司第七○三研究所 | Centrifugal fan for switching on or off gas circulation |
| CN102141051A (en) * | 2011-05-06 | 2011-08-03 | 美的集团有限公司 | Centrifugal fan impeller of range hood |
| CN102358420A (en) * | 2011-07-29 | 2012-02-22 | 中国科学院长春光学精密机械与物理研究所 | Attitude transforming aircraft |
| CN204299949U (en) * | 2014-10-29 | 2015-04-29 | 珠海格力电器股份有限公司 | Centrifugal impeller and centrifugal fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104389816A (en) | 2015-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102518997B1 (en) | double inverted fan | |
| JP6029738B2 (en) | Outdoor cooling unit for vehicle air conditioner | |
| WO2011141964A1 (en) | Axial flow blower | |
| CN104389816B (en) | Centrifugal impeller and centrifugal fan | |
| JP6524331B2 (en) | Blower and air conditioner using the same | |
| CN103245042B (en) | A kind of air-conditioner | |
| CN104295531A (en) | Centrifugal fan and air conditioner | |
| CN105221479B (en) | Centrifugal fan impeller, centrifugal fan and air conditioner | |
| CN104806538A (en) | Axial flow type fire-fighting smoke exhaust fan | |
| JP4989705B2 (en) | Cross-flow fan, blower and air conditioner | |
| CN203130602U (en) | Cross-flow fan for air conditioner, cross-flow blower and air conditioner | |
| CN105240317A (en) | Fan blade | |
| CN110107530B (en) | Multi-section type diversion hub structure fan | |
| CN204299949U (en) | Centrifugal impeller and centrifugal fan | |
| WO2013080395A1 (en) | Air conditioner | |
| JP2009250601A (en) | Cross flow fan and air conditioner equipped with the same | |
| JP2019127865A (en) | Centrifugal fan | |
| CN208059154U (en) | A kind of air conditioning exhausting grid and air-conditioner outdoor unit | |
| CN208870841U (en) | A kind of impeller and centrifugal blower | |
| CN112096656A (en) | Axial flow fan blade, axial flow fan and air conditioner | |
| CN202418036U (en) | Axial fan and air conditioner with same | |
| CN110118196B (en) | Axial flow wind wheel and air conditioner | |
| WO2019230582A1 (en) | Propeller fan and air conditioner outdoor unit provided with propeller fan | |
| WO2012124021A1 (en) | Cross-flow fan, blower, and air conditioner | |
| JP5460749B2 (en) | Cross-flow fan, blower and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |