CN105221479A - Centrifugal fan impeller, centrifugal fan and air conditioner - Google Patents
Centrifugal fan impeller, centrifugal fan and air conditioner Download PDFInfo
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- CN105221479A CN105221479A CN201510670790.9A CN201510670790A CN105221479A CN 105221479 A CN105221479 A CN 105221479A CN 201510670790 A CN201510670790 A CN 201510670790A CN 105221479 A CN105221479 A CN 105221479A
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- centrifugal fan
- centrifugal blower
- impeller
- blower fan
- rotating shaft
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- 229920003023 plastic Polymers 0.000 claims abstract description 20
- 239000004033 plastic Substances 0.000 claims abstract description 20
- 238000004378 air conditioning Methods 0.000 claims abstract description 16
- 230000003068 static effect Effects 0.000 abstract description 16
- 238000000926 separation method Methods 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000010219 correlation analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a centrifugal fan impeller, a centrifugal fan and an air conditioner, belongs to the field of air conditioning devices, and aims to solve the problems of poor strength and the like of the existing products. The centrifugal fan impeller comprises a fixed edge and a rear disc for penetrating through a rotating shaft, wherein a plurality of blades are arranged between the fixed edge and the rear disc, and the first ends of the blades close to the rear disc are wider than the second ends close to the fixed edge. The centrifugal fan comprises a volute, and the impeller is arranged in the volute. The air conditioner comprises the centrifugal fan. The centrifugal fan impeller increases the bearing capacity of the blades and the overall structural strength of the impeller, applies more work to airflow and increases the static pressure rise of the fan; the flow loss of the flow channel and the boundary flow separation are reduced, the performance of the centrifugal fan is improved, and the strength is high. The centrifugal fan and the air conditioner expand the application range of the plastic centrifugal fan, and the plastic centrifugal fan is popularized and applied to large-air-volume and high-static-pressure air conditioning units.
Description
Technical field
The present invention relates to aircondition field, particularly relate to a kind of centrifugal blower fan blade wheel, be provided with the centrifugal blower of this centrifugal blower fan blade wheel and be provided with the air-conditioning of this centrifugal blower.
Background technique
Forward multiple wing type centrifugal blower is the critical component in air-conditioning refrigeration system.In order to working effect is better, require impeller relative width compared with large, width of blade is little.
When centrifugal blower fan blade wheel is made of plastics, impeller relative width is large, the little this structure of width of blade is by the restriction of material properties, processing and assembly structure, bulk strength is poor, can only be applied on the air-conditioner set of little air quantity, low static pressure, cannot be applied in the air-conditioner set of Wind Volume, high static pressure.Existing Wind Volume, high static pressure field of air conditioning adopt metal centrifugal blower always, and cost of production is high, and noise is high, and is difficult to the vane airfoil profile of processing complexity.
Summary of the invention
An object of the present invention is to propose a kind of centrifugal blower fan blade wheel adding blade bearing capacity and impeller overall construction intensity.
Another object of the present invention is the centrifugal blower proposing a kind of high static pressure.
Another object of the present invention proposes a kind of air-conditioning using plastic centrifuge blower fan alternative metals centrifugal blower.
For reaching this object, on the one hand, the present invention is by the following technical solutions:
A kind of centrifugal blower fan blade wheel, comprising fixed edge and the hub disk for wearing rotating shaft, being provided with multiple blade between described fixed edge and described hub disk, near second end of the first end of described hub disk wider than close described fixed edge on described blade.
Particularly, the long limit near rotating shaft on described blade is skewed; The distance value of the intersection point distance rotating shaft of described long limit and described first end is S, and the distance value of the intersection point distance rotating shaft of described long limit and described second end is L, S > L.
Further, angle β ∈ [3 °, 9 °] between described long limit and the axis of rotating shaft.
Particularly, angle β=6 ° between described long limit and the axis of rotating shaft.
Particularly, described blade is tile, the axis of described blade and the axis being parallel of described rotating shaft.
Further, the radius of curvature of described first end is greater than the radius of curvature of described second end.
Particularly, described blade is made of plastics.
On the other hand, the present invention is by the following technical solutions:
A kind of centrifugal blower, comprises spiral case, is provided with above-mentioned impeller in described spiral case.
Again on the one hand, the present invention is by the following technical solutions:
A kind of air-conditioning, described air-conditioning comprises above-mentioned centrifugal blower.
Blade one end of centrifugal blower fan blade wheel of the present invention is wider than the other end, adds the bearing capacity of blade and the overall construction intensity of impeller, more to air-flow acting, adds fan static pressure liter; Impeller inlet place blade is narrow, forms convergent contour import, reduces flow passage loss and border flow separation, and be conducive to the performance improving centrifugal blower, intensity is high.
Above-mentioned impeller is provided with in the spiral case of centrifugal blower of the present invention, air-conditioning of the present invention comprises above-mentioned centrifugal blower, the leaning structure of vane inlet defines the plastic centrifuge blower fan of high static pressure, expand the using scope of plastic centrifuge blower fan, plastic centrifuge blower fan is promoted the use of in Wind Volume, high static pressure air-conditioner set.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the centrifugal blower fan blade wheel that the preferred embodiment of the present invention one provides;
Fig. 2 is the plan view of the centrifugal blower fan blade wheel that the preferred embodiment of the present invention one provides;
Fig. 3 is the half sectional view of the centrifugal blower fan blade wheel that the preferred embodiment of the present invention one provides;
The structural representation of the centrifugal blower that Fig. 4 provides for the preferred embodiment of the present invention one.
Be labeled as in figure:
1, impeller; 2, spiral case; 11, fixed edge; 12, hub disk; 13, blade; 121, axis hole; 131, first end; 132, the second end; 133, long limit.
Embodiment
Technological scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
Preferred embodiment one:
This preferred embodiment discloses a kind of centrifugal blower fan blade wheel.As depicted in figs. 1 and 2, this centrifugal blower fan blade wheel comprises fixed edge 11 and the hub disk 12 for wearing rotating shaft, is provided with multiple equally distributed blade 13 between fixed edge 11 and hub disk 12; Near second end 132 of the first end 131 of hub disk 12 wider than close fixed edge 11 on blade 13.Concrete, the long limit 133 near rotating shaft on blade 13 is skewed; Long limit 133 is S with the distance value of the intersection point distance rotating shaft of first end 131, and the distance value of the intersection point distance rotating shaft of long limit 133 and the second end 132 is L, S > L.Blade 13 is made of plastics.Hub disk 12 is arranged axis hole 121.
The Novel centrifugal fan impeller structure that this vane inlet tilts adds impeller bulk strength; Match with spiral case and run, reduce flow passage loss and boundary separation, improve fan static pressure liter, improve overall performance, be conducive to plastic centrifuge blower fan alternative metals Wind Volume centrifugal blower to be applied in field of air conditioning.
Blade 13 is in tile, the axis of blade 13 and the axis being parallel of rotating shaft.The radius of curvature of first end 131 is greater than the radius of curvature of the second end 132.ANSYS is used to carry out static analysis to the plastic centrifuge fan impeller structure of existing same size and plastic centrifuge fan impeller structure of the present invention, the maximum equivalent of the plastic centrifuge blower fan structure of existing same size is 4.07MPa, and the maximum equivalent of plastic centrifuge fan impeller structure of the present invention is 2.28Mpa.That is, plastic centrifuge fan impeller structure of the present invention reduces the equivalent stress of impeller, adds blade wheel structure intensity, contributes to the using scope expanding plastic centrifuge blower fan.Other correlation analysis data ask for an interview table 1.
Table 1. plastic centrifuge fan impeller structure equivalent stress contrasts
The blade of existing centrifugal blower fan blade wheel is wide sheet structure, that is, be invariable by impeller inlet to impeller hub disk direction upper air inlet area.The blade of centrifugal blower fan blade wheel of the present invention is in trapezoidal sheet structure, by impeller inlet to impeller hub disk direction upper air inlet area by reducing gradually greatly, forming contraction structure, flowed to hub disk in air-flow concentrated area, and do work in primary flow region, raising static pressure.
The impeller inlet velocity variation coefficient ξ >1 when the sectional area of air intake passage narrows gradually.The flow losses in runner can be reduced after adding impeller inlet velocity variation coefficient ξ, prevent air-flow from suction port turning, boundary separation occurring, improve the overall performance of centrifugal blower.
As shown in Figure 3, angle β ∈ [3 °, 9 °] between long limit 133 and the axis of rotating shaft, is preferably angle β=6 °.Contrast centrifugal blower outer diameter D 2=151mm performance, obtained the total head result of original blower fan and centrifugal fan by the emulation of ANSYS fluid, analytical structure is in table 2.
Table 2. plastic centrifuge fan performance simulation result
Preferred embodiment two:
This preferred embodiment discloses a kind of centrifugal blower fan blade wheel, and its structure is substantially identical with preferred embodiment one.This centrifugal blower fan blade wheel comprises fixed edge and the hub disk for wearing rotating shaft, is provided with multiple equally distributed blade between fixed edge and hub disk; Near second end of the first end of hub disk wider than close fixed edge on blade.
Difference is: the concrete shape of blade is not limit, and can be flowed and the object of the raising static pressure that does work in primary flow region, reaches by impeller inlet to impeller hub disk direction upper air inlet area by reducing greatly, making air-flow concentrated area gradually to hub disk.
Preferred embodiment three:
This preferred embodiment discloses a kind of centrifugal blower.As shown in Figure 4, this centrifugal blower comprises spiral case 2, is provided with the impeller 1 as described in preferred embodiment one or two in spiral case 2.Improve the static pressure liter of centrifugal blower near hub disk place internal diameter blade this structure little, concentrated part air-flow carries out doing work, pressurizeing, and reduces the noise of complete machine, reduces cost, can be applied to high static pressure centrifugal blower field by alternative metals centrifugal blower.
In Fig. 4, thick lines are depicted as centrifugal blower fan blade wheel distribution of exit velocities situation.Air-flow is done work by the impeller that width is larger, and it is symmetrical for flowing out impeller hourly velocity, large, little at impeller inlet place (two) near hub disk place (centre).That is, most of air-flow flows near hub disk by import, flows out, effectively can improve static pressure by the blade acting near hub disk is radial again.
Preferred embodiment four:
This preferred embodiment discloses a kind of air-conditioning.This air-conditioning comprises the centrifugal blower as described in preferred embodiment three, and overall performance is high, uses plastic centrifuge blower fan alternative metals centrifugal blower to manufacture Wind Volume, high static pressure air-conditioning.
Note, the know-why that above are only preferred embodiment of the present invention and use.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (9)
1. a centrifugal blower fan blade wheel, comprise fixed edge (11) and the hub disk (12) for wearing rotating shaft, multiple blade (13) is provided with between described fixed edge (11) and described hub disk (12), it is characterized in that, the upper first end (131) near described hub disk (12) of described blade (13) is wider than the second end (132) near described fixed edge (11).
2. centrifugal blower fan blade wheel according to claim 1, is characterized in that, the upper long limit (133) near rotating shaft of described blade (13) is in skewed; Described long limit (133) is S with the distance value of the intersection point distance rotating shaft of described first end (131), described long limit (133) is L, S > L with the distance value of the intersection point distance rotating shaft of described second end (132).
3. centrifugal blower fan blade wheel according to claim 2, is characterized in that, angle β ∈ [3 °, 9 °] between described long limit (133) and the axis of rotating shaft.
4. centrifugal blower fan blade wheel according to claim 2, is characterized in that, angle β=6 ° between described long limit (133) and the axis of rotating shaft.
5., according to the arbitrary described centrifugal blower fan blade wheel of Claims 1-4, it is characterized in that, described blade (13) in tile, the axis of described blade (13) and the axis being parallel of described rotating shaft.
6. centrifugal blower fan blade wheel according to claim 5, is characterized in that, the radius of curvature of described first end (131) is greater than the radius of curvature of described second end (132).
7., according to the arbitrary described centrifugal blower fan blade wheel of Claims 1-4, it is characterized in that, described blade (13) is made of plastics.
8. a centrifugal blower, comprises spiral case (2), it is characterized in that, be provided with in described spiral case (2) as arbitrary in claim 1 to 7 as described in impeller (1).
9. an air-conditioning, is characterized in that, described air-conditioning comprises centrifugal blower as claimed in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510670790.9A CN105221479B (en) | 2015-10-15 | 2015-10-15 | Centrifugal fan impeller, centrifugal fan and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510670790.9A CN105221479B (en) | 2015-10-15 | 2015-10-15 | Centrifugal fan impeller, centrifugal fan and air conditioner |
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| Publication Number | Publication Date |
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| CN105221479A true CN105221479A (en) | 2016-01-06 |
| CN105221479B CN105221479B (en) | 2018-08-07 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018032761A1 (en) * | 2016-08-18 | 2018-02-22 | 中山大洋电机股份有限公司 | Centrifugal fan wheel, centrifugal fan and air conditioner using same |
| CN109944828A (en) * | 2019-04-01 | 2019-06-28 | 青岛海尔智能技术研发有限公司 | A kind of centrifugal blower and electric appliance |
| CN110005636A (en) * | 2019-05-20 | 2019-07-12 | 东莞市麦凯通风设备有限公司 | The blade wheel structure of steady type Wind Volume high pressure blower |
| CN110140521A (en) * | 2019-05-05 | 2019-08-20 | 沙雅钵施然智能农机有限公司 | A kind of cotton picker wind-force impurity removed system and cotton picker |
| WO2023010958A1 (en) * | 2021-08-04 | 2023-02-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Centrifugal fan blade, fan and air conditioning system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1018993A (en) * | 1996-07-04 | 1998-01-20 | Matsushita Refrig Co Ltd | Sirocco fan |
| CN2426028Y (en) * | 2000-05-22 | 2001-04-04 | 上海林内有限公司 | Multi-blade fan for cooking fume exhauster |
| CN202811428U (en) * | 2012-09-29 | 2013-03-20 | 陈西安 | Multi-blade centrifugal fan |
| CN104564803A (en) * | 2015-01-16 | 2015-04-29 | 珠海格力电器股份有限公司 | Centrifugal impeller, centrifugal fan assembly and air conditioning unit |
| CN205117804U (en) * | 2015-10-15 | 2016-03-30 | 珠海格力电器股份有限公司 | Centrifugal fan impeller, centrifugal fan and air conditioner |
-
2015
- 2015-10-15 CN CN201510670790.9A patent/CN105221479B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1018993A (en) * | 1996-07-04 | 1998-01-20 | Matsushita Refrig Co Ltd | Sirocco fan |
| CN2426028Y (en) * | 2000-05-22 | 2001-04-04 | 上海林内有限公司 | Multi-blade fan for cooking fume exhauster |
| CN202811428U (en) * | 2012-09-29 | 2013-03-20 | 陈西安 | Multi-blade centrifugal fan |
| CN104564803A (en) * | 2015-01-16 | 2015-04-29 | 珠海格力电器股份有限公司 | Centrifugal impeller, centrifugal fan assembly and air conditioning unit |
| CN205117804U (en) * | 2015-10-15 | 2016-03-30 | 珠海格力电器股份有限公司 | Centrifugal fan impeller, centrifugal fan and air conditioner |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018032761A1 (en) * | 2016-08-18 | 2018-02-22 | 中山大洋电机股份有限公司 | Centrifugal fan wheel, centrifugal fan and air conditioner using same |
| CN109944828A (en) * | 2019-04-01 | 2019-06-28 | 青岛海尔智能技术研发有限公司 | A kind of centrifugal blower and electric appliance |
| CN110140521A (en) * | 2019-05-05 | 2019-08-20 | 沙雅钵施然智能农机有限公司 | A kind of cotton picker wind-force impurity removed system and cotton picker |
| CN110140521B (en) * | 2019-05-05 | 2024-04-05 | 沙雅钵施然智能农机有限公司 | Cotton picker wind power edulcoration system and cotton picker |
| CN110005636A (en) * | 2019-05-20 | 2019-07-12 | 东莞市麦凯通风设备有限公司 | The blade wheel structure of steady type Wind Volume high pressure blower |
| WO2023010958A1 (en) * | 2021-08-04 | 2023-02-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Centrifugal fan blade, fan and air conditioning system |
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| Publication number | Publication date |
|---|---|
| CN105221479B (en) | 2018-08-07 |
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