CN205078497U - Centrifugal fan single face machine airfoil fan - Google Patents
Centrifugal fan single face machine airfoil fan Download PDFInfo
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- CN205078497U CN205078497U CN201520616355.3U CN201520616355U CN205078497U CN 205078497 U CN205078497 U CN 205078497U CN 201520616355 U CN201520616355 U CN 201520616355U CN 205078497 U CN205078497 U CN 205078497U
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Abstract
The utility model discloses a centrifugal fan single face machine airfoil fan, including the blade, the blade is single face wing type, and it includes preceding half section of wing section, wing section second half section, and the wing section is single circular arc type for preceding half section, and the wing section second half section is the board -type, and the blade is even from the thickness of front end to rear end. The utility model discloses the mild slyness of wing section transition, efficient, noise hangs down, compares with board -type blade, single circular arc type blade, and the superior performance is compared with quick -witted airfoil fan, has improved operational reliability, has effectively lengthened the life of ventilation blower.
Description
Technical field
The utility model relates to centrifugal fan field, particularly relates to a kind of single-side machine airfoil fan of centrifugal fan.
Background technique
Board-type, single circular arc type and wing blade three kinds is had to the blade shape of impeller after current centrifugal fan, what in three, operational efficiency was the poorest is board-type, and single circular arc type is placed in the middle, and wing blade is the highest, (in figure, arrow indicates vane rotary direction, R to refer to Fig. 1 to Fig. 3
1represent impeller inlet radius, R
2represent impeller radius, R
k1represent single radius of arc).But in actual production; although wing blades equally with airplane wings can obtain lift; raise the efficiency; but because cavity wing nose is under the souring of dust-contained airflow; very easily to grind away breakage; the grit pierced in running is gathered and wherein produces vibration, cause mechanical failure, thus reduce the working life of ventilator.
And along with technical development, the developing direction of centrifugal fan trends towards efficiently, low noise, consistent with the theme that country advocates energy-saving and environmental protection energetically, and the optimal design of blade determines the key of blower performance, noise and efficiency, how the blade of design performance excellence has become difficult point and the focus in fan design field.
Model utility content
Technical problem to be solved in the utility model is to provide the centrifugal fan single-side machine airfoil fan that a kind of efficiency is high, noise is low.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is: provide a kind of centrifugal fan single-side machine airfoil fan, comprise blade, blade is single-side machine aerofoil profile, it comprises aerofoil profile first half section, aerofoil profile second half section, aerofoil profile first half Duan Weidan circular arc type, the aerofoil profile second half section is board-type.
In the utility model preferred embodiment, the thickness of blade from front end to rear end is even.
In order to verify the actual effect of single-side machine airfoil fan, according to customer demand when development model is 6-42-11NO7.4A centrifugal fan, under the identical prerequisite of other parameter of blade, make the backward inclined blade of single circular arc type and single-side machine airfoil fan two type respectively, and carry out contrast experiment by GB1236-85 air inlet test and GB/T2888-91, test result shows: single-side machine aerofoil vane aeroperformance is better than single circular impeller, and peak efficiency improves 2.5% than single circular impeller, noise ratio A sound level reduces 2.7dB.
The beneficial effects of the utility model are: the utility model aerofoil transition is round and smooth gently, and efficiency is high, noise is low, compared with straight-plate-type blade, single circular arc type blade, superior performance, compared with wing blades, improve operational reliability, effectively extend the working life of ventilator.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of centrifugal fan straight-plate-type blade in prior art;
Fig. 2 is the schematic diagram of centrifugal fan list circular arc type blade in prior art;
Fig. 3 is the schematic diagram of centrifugal fan wing blades in prior art;
Fig. 4 is the schematic diagram of the utility model centrifugal fan single-side machine airfoil fan;
Fig. 5 is the plan view of the utility model centrifugal fan single-side machine airfoil fan one preferred embodiment;
Fig. 6 is the side view of described centrifugal fan single-side machine airfoil fan.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.
Refer to Fig. 5 and Fig. 6, the utility model is embodiment comprise:
A kind of centrifugal fan single-side machine airfoil fan, comprise blade, blade is single-side machine aerofoil profile, and it comprises aerofoil profile first half section, aerofoil profile second half section, and as shown in Figure 1, aerofoil profile first half segment mark is designated as A, and the aerofoil profile second half section is labeled as B.Aerofoil profile first half Duan Weidan circular arc type, the aerofoil profile second half section is straight line type.Arrow instruction vane rotary direction in composition graphs 4, figure, R
1represent impeller inlet radius, R
2represent impeller radius, R
k2represent the radius of aerofoil profile first half section, L represents the length of aerofoil profile second half section.The thickness of blade from front end to rear end is even.
Be different from wing blades of the prior art, the straight plate part that blade described in the utility model does not exist wing blades divides, but because of the existence of blade non-working surface vortex, air-flow is still similar to former wing blades at the movement locus of Ye Daonei, therefore still can obtain desirable operational effect.
The utility model aerofoil transition is round and smooth gently, and efficiency is high, noise is low, compared with straight-plate-type blade, single circular arc type blade, superior performance, compared with wing blades, though performance is identical, but significantly improve operational reliability, and effectively extend the working life of ventilator.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (2)
1. a centrifugal fan single-side machine airfoil fan, comprises blade, it is characterized in that, blade is single-side machine aerofoil profile, and it comprises aerofoil profile first half section, aerofoil profile second half section, aerofoil profile first half Duan Weidan circular arc type, and the aerofoil profile second half section is board-type.
2. centrifugal fan single-side machine airfoil fan according to claim 1, it is characterized in that, the thickness of blade from front end to rear end is even.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520616355.3U CN205078497U (en) | 2015-08-15 | 2015-08-15 | Centrifugal fan single face machine airfoil fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520616355.3U CN205078497U (en) | 2015-08-15 | 2015-08-15 | Centrifugal fan single face machine airfoil fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205078497U true CN205078497U (en) | 2016-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520616355.3U Active CN205078497U (en) | 2015-08-15 | 2015-08-15 | Centrifugal fan single face machine airfoil fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205078497U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973427A (en) * | 2019-05-10 | 2019-07-05 | 泛仕达机电股份有限公司 | A kind of multi-wing centrifugal fan blade, impeller and a kind of multi-wing centrifugal fan |
-
2015
- 2015-08-15 CN CN201520616355.3U patent/CN205078497U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973427A (en) * | 2019-05-10 | 2019-07-05 | 泛仕达机电股份有限公司 | A kind of multi-wing centrifugal fan blade, impeller and a kind of multi-wing centrifugal fan |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |