CN107313977A - Centrifugal fan blade, centrifugal fan and air conditioner - Google Patents
Centrifugal fan blade, centrifugal fan and air conditioner Download PDFInfo
- Publication number
- CN107313977A CN107313977A CN201710610692.5A CN201710610692A CN107313977A CN 107313977 A CN107313977 A CN 107313977A CN 201710610692 A CN201710610692 A CN 201710610692A CN 107313977 A CN107313977 A CN 107313977A
- Authority
- CN
- China
- Prior art keywords
- blade
- cambered surface
- centrifugation
- centrifugation blade
- leaf road
- 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.)
- Granted
Links
- 238000005119 centrifugation Methods 0.000 claims description 48
- 230000008859 change Effects 0.000 claims description 14
- 238000000926 separation method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- F04D29/666—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
-
- 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
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 fan blade, a centrifugal fan and an air conditioner. The centrifugal fan blade comprises a plurality of blades which are arranged at intervals along the circumferential direction, a blade channel (1) is formed between every two adjacent blades, and the blade channel (1) is gradually reduced along the direction of the central axis far away from the centrifugal fan blade. The centrifugal fan blade has a more reasonable structure, and can effectively avoid or reduce the generation of airflow separation on one side of the non-working surface in the blade channel, thereby improving the efficiency of the fan.
Description
Technical field
The invention belongs to air-conditioning technique field, and in particular to a kind of centrifugation blade, centrifugal blower and air conditioner.
Background technology
Centrifugal blower is widely used in air conditioner, and the design of leaf road plays key effect to fan performance and running stability.It is existing
Have in technology, the cross-sectional profiles line of the blade of centrifugal blower is made up of multi-section circular arc line, but its contour line is only by simple
Several sections of circular arc lines are constituted, and the stream pressure often formed is smaller, and internal non-working surface side easily produces air-flow separation, so that
Influence fan efficiency.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to provide a kind of centrifugation blade, centrifugal blower and air conditioner, structure
More rationally, it can be prevented effectively from or reduce non-working surface side inside leaf road and produce air-flow separation, and then improve blower fan effect
Rate.
In order to solve the above problems, the present invention provides a kind of centrifugation blade, includes multiple blades of circumferentially spaced setting,
Leaf road is formed between two adjacent blades, direction of the leaf road along the central axis away from centrifugation blade is tapered.
Preferably, blade includes adjacent the first blade and the second blade, and the first blade has the towards the second blade
One cambered surface, the second blade has the second cambered surface towards the first blade, and leaf road is formed between the first cambered surface and the second cambered surface.
Preferably, along the direction from arrival end to the port of export, the inscribed circle diameter D in leaf road change and the circle of inscribed circle
The change for the track S that the heart is formed is metWherein K be constant, inscribed circle simultaneously with the first cambered surface and the second cambered surface phase
Cut.
Preferably, the first cambered surface is convex globoidal, and the second cambered surface is cancave cambered surface.
Preferably, the arrival end inscribed circle diameter D1 in the leaf road and port of export inscribed circle diameter D3 in leaf road ratio is met
1.05≤D1/D3≤1.4。
Preferably, the arrival end inscribed circle diameter D1 in the leaf road and port of export inscribed circle diameter D3 in leaf road ratio is met
1.2≤D1/D3≤1.3。
Preferably, the quantity of blade is 40 to 74.
Preferably, the height of blade is 80~150mm, the height of its Leaf refer to blade from centrifugation blade centrally along
The height radially extended.
Preferably, blade is airfoil type.
According to another aspect of the present invention there is provided a kind of centrifugal blower, including centrifugation blade, the centrifugation blade is above-mentioned
Centrifugation blade.
According to another aspect of the present invention there is provided a kind of air conditioner, including centrifugation blade, the centrifugation blade is above-mentioned
Centrifugation blade.
The centrifugation blade that the present invention is provided, is included between multiple blades of circumferentially spaced setting, two adjacent blades
Leaf road is formed, direction of the leaf road along the central axis away from centrifugation blade is tapered.During air flow, due to leaf road
Direction along the central axis away from centrifugation blade is tapered, namely leaf road is tapered along air-flow direction, therefore can make
Air is under the leaf road effect gradually tapered up, and pressure gradually increases, and enough pressure is formed in Ye Daonei, it is to avoid blade is on convex surface
Side namely point working face side produce air-flow separation, and structure is more reasonable, and air-flow can be avoided to produce Inner whirlpools in Ye Daonei, improves
Air current flow efficiency, and then improve blower fan work efficiency.
Brief description of the drawings
Fig. 1 is the air channel structure schematic diagram of the centrifugation blade of the embodiment of the present invention；
Fig. 2 is the structural representation of the centrifugation blade of the embodiment of the present invention；
Fig. 3 is the dimensional structure diagram of the centrifugation blade of the embodiment of the present invention；
Fig. 4 is that different leaf roads design the comparison figure in fan efficiency.
Reference is expressed as：
1st, Ye Dao；2nd, the first blade；3rd, the second blade；4th, the first cambered surface；5th, the second cambered surface.
Embodiment
The direction of arrow is the rotation direction of centrifugation blade in figure.
With reference to shown in referring to Fig. 1 to Fig. 4, embodiments in accordance with the present invention, centrifugation blade includes circumferentially spaced setting
Leaf road 1 is formed between multiple blades, two adjacent blades, direction of the leaf road 1 along the central axis away from centrifugation blade is gradually
Contracting.
During air flow, the direction due to leaf road 1 along the central axis away from centrifugation blade is tapered, namely
Leaf road 1 is tapered along air-flow direction, therefore can make air under the effect of leaf road 1 gradually tapered up, and pressure gradually increases,
Blade non-working surface in leaf road 1 forms enough pressure, it is to avoid blade produces air-flow separation, structure in non-working surface side
More rationally, it can avoid or reduce air-flow and Inner whirlpools are produced in leaf road 1, improve air current flow efficiency, and then improve blower fan
Operating efficiency.
From figure 1 it appears that in the present embodiment, with the flow direction of gas, inscribed circle diameter D is gradually reduced,
D3 ＜ D2 ＜ D1, it may therefore be assured that the area of section in leaf road 1 successively decreases along gas flow direction so that air pressure gradually rises,
Air-flow can be filled in the area of low pressure of non-working surface, it is to avoid or reduce the generation in Inner whirlpools.
In the present embodiment, blade includes adjacent the first blade 2 and the second blade 3, and the first blade 2 has towards second
First cambered surface 4 of blade 3, the second blade 3 has the second cambered surface 5 towards the first blade 2, the first cambered surface 4 and the second cambered surface 5 it
Between form leaf road 1.Cambered surface air channel is advantageously in the leaf road 1 for forming suitable gas flowing, it is possible to increase air is in leaf road 1
Flow efficiency, reduces the generation in air-flow Inner whirlpools.
Preferably, along the direction from arrival end to the port of export, the inscribed circle diameter D in leaf road 1 change and inscribed circle
The change for the track S that the center of circle is formed is metWherein K be constant, inscribed circle simultaneously with the first cambered surface 4 and the second cambered surface
5 is tangent.The ratio of the track S formed by the inscribed circle diameter D rate of change in leaf road 1 and the center of circle of inscribed circle rate of change
The track S formed for the center of circle of constant, therefore inscribed circle rate of change is as inscribed circle diameter D rate of change changes and becomes
Change, can be consistent rate of change of the rate of change for the track S that the center of circle of inscribed circle formed all the time with inscribed circle diameter D,
S flexibility and inscribed circle diameter D change are matched, forms the leaf road 1 for more conforming to fluid flow characteristics, enters
The generation of one step reduction air-flow separation, improves the operating efficiency of blower fan.
In the present embodiment, the first cambered surface 4 is convex globoidal, and the second cambered surface 5 is cancave cambered surface, the process rotated in centrifugation blade
In, the first cambered surface 4 is non-working surface, and the second cambered surface 5 is working face, is advantageously done work in air-flow, improves the flowing of air-flow
Efficiency, improves the service behaviour of centrifugation blade.
Preferably, the arrival end inscribed circle diameter D1 in the leaf road 1 and port of export inscribed circle diameter D3 in leaf road 1 ratio is met
1.05≤D1/D3≤1.4.It is highly preferred that the arrival end inscribed circle diameter D1 in leaf road 1 and the port of export inscribed circle diameter in leaf road 1
D3 ratio meets 1.2≤D1/D3≤1.3.
With reference to shown in Figure 4, by this tapering type leaf road, under conditions of equal air quantity is reached, with conventional leaf road
Compare, fan efficiency can improve 8%~10% or so.
Preferably, the quantity of blade is 40 to 74, the quantity of blade can be avoided excessive or very few so that the number of blade
Amount is more reasonable.
Preferably, the height of blade is 80~150mm, the height of its Leaf refer to blade from centrifugation blade centrally along
The height radially extended.
Preferably, blade is airfoil type, wing blades curved design so that blade surface air flow method more conforms to sky
Aerodynamics principle.
Embodiments in accordance with the present invention, centrifugal blower includes centrifugation blade, and the centrifugation blade is above-mentioned centrifugation blade.
Embodiments in accordance with the present invention, air conditioner includes centrifugation blade, and the centrifugation blade is above-mentioned centrifugation blade.
Those skilled in the art is it is easily understood that on the premise of not conflicting, above-mentioned each advantageous manner can be free
Ground combination, superposition.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.With
Only it is the preferred embodiment of the present invention described in upper, it is noted that for those skilled in the art, not
On the premise of departing from the technology of the present invention principle, some improvement and modification can also be made, these improvement and modification also should be regarded as this
The protection domain of invention.
Claims (11)
1. a kind of centrifugation blade, it is characterised in that multiple blades including circumferentially spaced setting, two adjacent blades
Between formed leaf road (1), the leaf road (1) along away from the centrifugation blade central axis direction it is tapered.
2. centrifugation blade according to claim 1, it is characterised in that the blade include adjacent the first blade (2) and
Second blade (3), first blade (2) has the first cambered surface (4) towards second blade (3), second blade
(3) there is the second cambered surface (5) towards first blade (2), between first cambered surface (4) and second cambered surface (5)
Form the leaf road (1).
3. centrifugation blade according to claim 2, it is characterised in that described along the direction from arrival end to the port of export
The change for the track S that the inscribed circle diameter D in leaf road (1) change and the center of circle of the inscribed circle are formed is metIts
Middle K is constant, and inscribed circle is simultaneously tangent with the first cambered surface (4) and the second cambered surface (5).
4. centrifugation blade according to claim 2, it is characterised in that first cambered surface (4) is convex globoidal, described second
Cambered surface (5) is cancave cambered surface.
5. centrifugation blade according to any one of claim 1 to 4, it is characterised in that in the arrival end of the leaf road (1)
The tangential circle diameter D1 and port of export inscribed circle diameter D3 of the leaf road (1) ratio meets 1.05≤D1/D3≤1.4.
6. centrifugation blade according to claim 5, it is characterised in that the arrival end inscribed circle diameter D1 of the leaf road (1)
1.2≤D1/D3≤1.3 are met with the port of export inscribed circle diameter D3 of the leaf road (1) ratio.
7. centrifugation blade according to any one of claim 1 to 4, it is characterised in that the quantity of the blade be 40 to
74.
8. centrifugation blade according to any one of claim 1 to 4, it is characterised in that the height of the blade is 80~
150mm, the height of its Leaf refers to the height that blade is radially extended from the center of centrifugation blade.
9. centrifugation blade according to any one of claim 1 to 4, it is characterised in that the blade is airfoil type.
10. a kind of centrifugal blower, including centrifugation blade, it is characterised in that the centrifugation blade is any in claim 1 to 9
Centrifugation blade described in.
11. a kind of air conditioner, including centrifugation blade, it is characterised in that the centrifugation blade is any one of claim 1 to 9
Described centrifugation blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710610692.5A CN107313977B (en) | 2017-07-25 | 2017-07-25 | Centrifugal fan blade, centrifugal fan and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710610692.5A CN107313977B (en) | 2017-07-25 | 2017-07-25 | Centrifugal fan blade, centrifugal fan and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107313977A true CN107313977A (en) | 2017-11-03 |
| CN107313977B CN107313977B (en) | 2024-03-22 |
Family
ID=60179039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710610692.5A Active CN107313977B (en) | 2017-07-25 | 2017-07-25 | Centrifugal fan blade, centrifugal fan and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107313977B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762009A (en) * | 2021-01-28 | 2021-05-07 | 珠海格力电器股份有限公司 | Cross-flow blade, cross-flow fan and air conditioner |
| CN114483648A (en) * | 2022-01-27 | 2022-05-13 | 杭州老板电器股份有限公司 | Blade design method, blade and centrifugal fan |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000170693A (en) * | 1998-12-11 | 2000-06-20 | Hitachi Ltd | Centrifugal diffuser and electric fan provided therewith |
| EP1741934A1 (en) * | 2005-07-04 | 2007-01-10 | Behr GmbH & Co. KG | Rotor |
| CN201827145U (en) * | 2010-10-26 | 2011-05-11 | 成都泰阳实业有限公司 | Centrifugal fan |
| CN206972610U (en) * | 2017-07-25 | 2018-02-06 | 珠海格力电器股份有限公司 | Centrifugal fan blade, centrifugal fan and air conditioner |
-
2017
- 2017-07-25 CN CN201710610692.5A patent/CN107313977B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000170693A (en) * | 1998-12-11 | 2000-06-20 | Hitachi Ltd | Centrifugal diffuser and electric fan provided therewith |
| EP1741934A1 (en) * | 2005-07-04 | 2007-01-10 | Behr GmbH & Co. KG | Rotor |
| CN201827145U (en) * | 2010-10-26 | 2011-05-11 | 成都泰阳实业有限公司 | Centrifugal fan |
| CN206972610U (en) * | 2017-07-25 | 2018-02-06 | 珠海格力电器股份有限公司 | Centrifugal fan blade, centrifugal fan and air conditioner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762009A (en) * | 2021-01-28 | 2021-05-07 | 珠海格力电器股份有限公司 | Cross-flow blade, cross-flow fan and air conditioner |
| CN114483648A (en) * | 2022-01-27 | 2022-05-13 | 杭州老板电器股份有限公司 | Blade design method, blade and centrifugal fan |
| CN114483648B (en) * | 2022-01-27 | 2024-04-09 | 杭州老板电器股份有限公司 | Blade design the method is blade and centrifugal fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107313977B (en) | 2024-03-22 |
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