CN209115391U - Multiblade centrifugation blade, centrifugal blower and air conditioner - Google Patents
Multiblade centrifugation blade, centrifugal blower and air conditioner Download PDFInfo
- Publication number
- CN209115391U CN209115391U CN201821534449.6U CN201821534449U CN209115391U CN 209115391 U CN209115391 U CN 209115391U CN 201821534449 U CN201821534449 U CN 201821534449U CN 209115391 U CN209115391 U CN 209115391U
- Authority
- CN
- China
- Prior art keywords
- blade
- multiblade
- centrifugation
- noise reduction
- width
- 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
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of Multiblade centrifugation blade, centrifugal blower and air conditioners, Multiblade centrifugation blade, it include: fan blade bottom plate and blade group, blade group includes the blade of at least two blade profiles, the blade of all blade profiles is arranged alternately in the circumferential direction of fan blade bottom plate, and the blade quantity of various blade profiles is identical.The utility model can effectively improve centrifugation blade performance, reduce fan operation noise.
Description
Technical field
The utility model relates to centrifugal blower technical field more particularly to a kind of Multiblade centrifugation blade, centrifugal blower and
Air conditioner.
Background technique
Conventional centrifugal fan blade usually has fan blade bottom plate and the blade group that is arranged on fan blade bottom plate, such as notification number is
The utility model patent of CN206770272U discloses a kind of through-flow fan blade and air conditioner, this blade structure are only reversed by blade
It installs, the vaned blade profile of institute is unified in blade group, and blade profile parameters are unable to independent design, and inlet blade angle θ 1 is unadjustable, nothing
The control blade structure and performance of method multi-parameter, and this structure often leads to flow separation, fan blade outlet occur between leaf
Air-flow interferes with each other, and causes fan efficiency low noise big.
Therefore, how to design a kind of Multiblade centrifugation blade of raising fan blade performance is that industry technology urgently to be resolved is asked
Topic.
Utility model content
In order to solve that the defect of fan blade performance difference exists in the prior art, the utility model proposes a kind of Multiblades to be centrifuged wind
Leaf, centrifugal blower and air conditioner.
The technical solution adopted in the utility model is to design a kind of Multiblade centrifugation blade, comprising: fan blade bottom plate and blade
Group, blade group include the blade of at least two blade profiles, and all blade rings are intervally arranged around the center of fan blade bottom plate.
Preferably, the blade of different blade profiles is arranged alternately in the circumferential direction of fan blade bottom plate.
Preferably, the blade quantity of various blade profiles is identical.
Preferably, fan blade bottom plate is equipped with wheel hub, and the blade ring in blade group is arranged around wheel hub.
Preferably, the radius R of wheel hub1Less than the radius R of fan blade bottom plate2。
Preferably, airflow channel is equipped between two neighboring blade, there are noise reduction runner, noise reduction streams in all airflow channels
The width of flow path in road is radius of circle tangent with its two sides blade everywhere, the inlet channel width r of noise reduction runner1Greater than outlet stream
Road width r2。
Preferably, inlet channel width r1The greatest circle tangent with its two sides blade half in import for the noise reduction runner
Diameter, outlet flow width r2For maximum radius of circle tangent with its two sides blade in the outlet of noise reduction runner.
Preferably, the width of flow path in noise reduction runner is gradually reduced from import to outlet.
Preferably, the flow area in noise reduction runner everywhere is circumference and leaf everywhere tangent with its two sides blade everywhere
The flow area of high product, noise reduction runner is gradually reduced from import to outlet.
Wherein, the inlet flow area of the position inlet channel width r1, the outlet flow width r2
The outlet flow area of position。
Preferably, in noise reduction runner width variable gradient dr/dR=(r1-r2)/(R2-R1), wherein dr/dR > 0.
Preferably, gas flows in the bigger noise reduction runner of taper angle a=arctan (dr/dR) of noise reduction runner, taper angle a
Accelerate faster.
Preferably, the exit installation angle of blade is 2 < 90 ° or 2 < 180 ° of 90 ° < θ of 2,0 ° < θ of θ.
Preferably, the side of blade is equipped with thickening layer.
Preferably, blade group includes plate blade and circular arc type blade.
The utility model also proposed a kind of centrifugal blower, including above-mentioned Multiblade centrifugation blade.
The utility model also proposed a kind of air conditioner, including above-mentioned centrifugal blower.
Compared with prior art, the blade group of the utility model is provided with the blade of at least two blade profiles, different leaves
Blade profile independent design can reduce inner vortex loss, improve wind effectively to change the flowing law of runner interior air-flow as required
Leaf performance and fan operation efficiency.Also, a variety of blade profile combinations can overcome the stagger angle θ of unified section blade1It is non-adjustable
The defect of section, and blade exit established angle θ can be changed2, making fan blade output flow, there are unsteady power phase differences, preferably to drop
Low fan blade Rotation Noise.
Detailed description of the invention
The utility model is described in detail below with reference to embodiment and attached drawing, in which:
Fig. 1 is the structural schematic diagram of Multiblade centrifugation blade in the utility model.
Specific embodiment
As shown in Figure 1, the utility model proposes Multiblade centrifugation blade, comprising: fan blade bottom plate and blade group, blade group
The blade of blade comprising at least two blade profiles, all blade profiles is arranged alternately in the circumferential direction of fan blade bottom plate, the leaf of various blade profiles
Piece quantity is identical, and in a ring, the center of fan blade bottom plate is equipped with wheel hub to the shape of blade group, the blade ring in blade group around
Wheel hub arrangement, the radius R of wheel hub1Less than the radius R2 of fan blade bottom plate.
As shown in Figure 1, in one embodiment, blade group includes plate blade 1 and circular arc type blade 2, plate blade
Stagger angle be θ1, exit installation angle θ2, the stagger angle of circular arc type blade is θ '1, exit installation angle θ '2, real
More Multiblade can also be used in the design of border, designed between blade profile mutually interference-free.Preferably, it is equipped between two neighboring blade
Airflow channel, the utility model designs in all airflow channels noise reduction runner, and the width of flow path of noise reduction runner, which changes, to be determined
Acceleration situation of the air-flow in airflow channel, the width of flow path in noise reduction runner is circle tangent with its two sides blade everywhere half
Diameter, the inlet channel width r of noise reduction runner1Greater than outlet flow width r2, inlet channel width r1For the noise reduction runner into
The radius of circle tangent with its two sides blade in mouthful.Outlet flow width r2It is tangent with its two sides blade in the outlet of noise reduction runner
Maximum radius of circle.
Preferably, the flow area of noise reduction runner is from inlet channel width r1Position is to outlet flow width r2Place
Position is gradually reduced, and the flow area in noise reduction runner everywhere is that circumference and leaf everywhere tangent with its two sides blade everywhere are high
Product, inlet channel width r1The inlet flow area of position, outlet flow width r2Position
Outlet flow area, when flow area is gradually reduced, promotes air-flow to form acceleration between leaf and flow, in inhibition
The formation of bilge vortex, this acceleration channels feature noise are declined, and efficiency is increased.The change of width of flow path in noise reduction runner
Change gradient dr/dR=(r1-r2)/(R2-R1), wherein dr/dR > 0, to guarantee the width of flow path in noise reduction runner from import to outlet
It is gradually reduced, taper angle a=arctan (dr/dR) of noise reduction runner, gas flowing accelerates more in the bigger noise reduction runner of taper angle a
Fastly.
Preferably, the exit installation angle of blade is θ2, 0 ° < θ2< 90 ° or 90 ° < θ2< 180 °, the stagger angle θ 1 of blade
Determine becoming a mandarin for air-flow, excessive and too small value all will affect the flowing confusion degree of Ye Daonei, outlet blade angle θ2
The static pressure ability for determining unit, to high-static pressure fan, often use biggish value, the combination of a variety of blade profiles can overcome unification
The stagger angle θ of section blade1Uncontrollable defect, and blade exit established angle θ can be changed2, deposit fan blade output flow
In unsteady power phase difference, preferably to reduce fan blade Rotation Noise.
The design considerations principle that the utility model imports and exports established angle is as follows, it is assumed that air-flow is full of inter-leaf flow channel, according to even
Continuous property equation, for centrifugal blower,, therefore,, right
For constant speed flowing,I.e., inlet and outlet width of flow path ratio and inlet and outlet install angular correlation, pass through disengaging
The setting of mouth runner can calculate the corresponding scope of design of inlet and outlet established angle.
According to the theoretical equation of total pressure of fan:,,,,,,,
Wherein, 1 in inferior indicates that vane inlet, 2 indicate blade exit, cu、cmIndicate absolute velocity the peripheral compoent of velocity, absolutely
To the axial velocity of speed, w, u are respectively relative velocity, peripheral speed, qrIndicate volume flow, b indicates that leaf is high, and z indicates leaf
The piece number, R2For outlet flow width, R1For inlet channel width, it follows that the leaf of the anti-static pressure performance of fan blade and blade is high, stream
Road width, inlet and outlet setting angle are related, can reach the purpose of control ventilator pressure by the adjusting to each parameter.
Further, the side of blade is equipped with thickening layer, thickening layer can fan performance according to demand select aerofoil profile, such as machine
Aerofoil profile, arc plate etc. thicken mode, and the combination that different airfoil profiles thicken can also provide wider blower efficient operation area.Blade
Thickness is bigger, and the excretion coefficient of runner interior air-flow also can be bigger, i.e., flow passage area reduces.
The utility model also proposed a kind of centrifugal blower, including above-mentioned Multiblade centrifugation blade.
The utility model also proposed a kind of air conditioner, including above-mentioned centrifugal blower.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (17)
1. a kind of Multiblade centrifugation blade, comprising: fan blade bottom plate and blade group, the blade group include several around the wind
The blade of tea residue plate center arrangement, which is characterized in that the blade group includes the blade of at least two blade profiles；Two neighboring blade
Between be equipped with airflow channel, there are noise reduction runner in all airflow channels, the width of flow path of the noise reduction runner be everywhere with its
The tangent radius of circle of two sides blade, the inlet channel width r of the noise reduction runner1Greater than outlet flow width r2。
2. Multiblade centrifugation blade as described in claim 1, which is characterized in that the blade of different blade profiles is in the fan blade bottom plate
Circumferential direction on be arranged alternately.
3. Multiblade centrifugation blade as claimed in claim 2, which is characterized in that the blade quantity of various blade profiles is identical.
4. Multiblade centrifugation blade as described in claim 1, which is characterized in that the fan blade bottom plate is equipped with wheel hub, described
Blade ring in blade group is arranged around the wheel hub.
5. Multiblade centrifugation blade as claimed in claim 4, which is characterized in that the radius R of the wheel hub1Less than the fan blade
The radius R of bottom plate2。
6. Multiblade centrifugation blade as described in claim 1, which is characterized in that the inlet channel width r1For the noise reduction
The maximum radius of circle tangent with its two sides blade in the import of runner；The outlet flow width r2For going out for the noise reduction runner
The maximum radius of circle tangent with its two sides blade in mouthful.
7. Multiblade centrifugation blade as described in claim 1, which is characterized in that width of flow path in the noise reduction runner by into
Mouth is gradually reduced to outlet.
8. Multiblade centrifugation blade as described in claim 1, which is characterized in that the flow area in the noise reduction runner everywhere
For everywhere with the tangent circumference of its two sides blade and the high product of leaf everywhere, the flow area of the noise reduction runner from import to
Outlet is gradually reduced.
9. Multiblade centrifugation blade as claimed in claim 8, which is characterized in that the position inlet channel width r1
Inlet flow area S1=2 π r1b1, the outlet flow width r2The outlet flow area S of position2=2 π r2b2。
10. Multiblade centrifugation blade as described in claim 1, which is characterized in that the change of the width of flow path of the noise reduction runner
Change gradient dr/dR=(r1-r2)/(R2-R1), wherein dr/dR > 0.
11. Multiblade centrifugation blade as claimed in claim 10, which is characterized in that the taper angle a=of the noise reduction runner
Gas flowing accelerates faster in the more big noise reduction runner of arctan (dr/dR), the taper angle a.
12. Multiblade centrifugation blade as described in claim 1, which is characterized in that the stagger angle of the blade is θ1, go out
Mouth established angle is θ2, wherein
13. such as the described in any item Multiblade centrifugation blades of claim 1 to 12, which is characterized in that pacify the outlet of the blade
Dress angle is θ2, 0 ° < θ2< 90 ° or 90 ° < θ2<180°。
14. such as the described in any item Multiblade centrifugation blades of claim 1 to 12, which is characterized in that the side of the blade is set
There is thickening layer.
15. such as the described in any item Multiblade centrifugation blades of claim 1 to 12, which is characterized in that the blade group includes flat
Plate blade and circular arc type blade.
16. a kind of centrifugal blower characterized by comprising as the described in any item Multiblades of claim 1 to 15 are centrifuged wind
Leaf.
17. a kind of air conditioner characterized by comprising centrifugal blower as claimed in claim 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821534449.6U CN209115391U (en) | 2018-09-19 | 2018-09-19 | Multiblade centrifugation blade, centrifugal blower and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821534449.6U CN209115391U (en) | 2018-09-19 | 2018-09-19 | Multiblade centrifugation blade, centrifugal blower and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209115391U true CN209115391U (en) | 2019-07-16 |
Family
ID=67198966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821534449.6U Active CN209115391U (en) | 2018-09-19 | 2018-09-19 | Multiblade centrifugation blade, centrifugal blower and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209115391U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139547A (en) * | 2018-09-19 | 2019-01-04 | 珠海格力电器股份有限公司 | Multiblade centrifugation blade, centrifugal blower and air conditioner |
-
2018
- 2018-09-19 CN CN201821534449.6U patent/CN209115391U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139547A (en) * | 2018-09-19 | 2019-01-04 | 珠海格力电器股份有限公司 | Multiblade centrifugation blade, centrifugal blower and air conditioner |
| CN109139547B (en) * | 2018-09-19 | 2024-04-26 | 珠海格力电器股份有限公司 | Multi-blade centrifugal fan blade, centrifugal fan and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2011062062A1 (en) | Multi-blade fan for centrifugal blower | |
| CN104895841B (en) | Rectifier, flow passage structure, combined compressor, aero gas turbine engine | |
| CN209115391U (en) | Multiblade centrifugation blade, centrifugal blower and air conditioner | |
| CN108412809A (en) | A kind of baffle liner, centrifugal blower and air conditioner | |
| CN109139547A (en) | Multiblade centrifugation blade, centrifugal blower and air conditioner | |
| CN104613009B (en) | Reversible axial flow fan blade with air blowing grooves | |
| WO2024001418A1 (en) | Cross-flow fan blade and air conditioner | |
| CN108457905A (en) | Volute tongue, cross flow fan, air conditioner | |
| CN106460537A (en) | Turbomachine inlet nozzle for asymmetric flow, with vanes of different shapes | |
| CN208778341U (en) | A kind of axial-flow leaf and blower, air-conditioning comprising it | |
| CN208153402U (en) | Volute tongue, cross flow fan, air conditioner | |
| CN208503103U (en) | Composite impeller, centrifugal blower and range hood | |
| CN207500186U (en) | Blade construction and with its air conditioner | |
| CN109505801A (en) | Asymmetric both sides air inlet impeller, centrifugal blower and kitchen ventilator | |
| CN109519397A (en) | Centrifugal compressor and its design method | |
| CN209704915U (en) | Centrifugation blade, courtyard machine and the air-conditioning system with it | |
| CN109611346A (en) | Centrifugal compressor and its design method | |
| CN209501129U (en) | A kind of air filter | |
| CN104279188A (en) | Centrifugal fan and air conditioner with same | |
| CN105201905B (en) | Centrifugal impeller component and centrifugal compressor | |
| CN108087330A (en) | Blade construction and with its air conditioner | |
| CN208382403U (en) | Air-conditioner outdoor unit | |
| CN208804037U (en) | Impeller, centrifugal blower and range hood | |
| CN209528254U (en) | A kind of the air inlet protective cover and hair drier of blower | |
| CN208252425U (en) | A kind of high-efficient low-noise centrifugal impeller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |