CN208380923U - S type vanes close formula impeller for Small Centrifugal Fan - Google Patents
S type vanes close formula impeller for Small Centrifugal Fan Download PDFInfo
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- CN208380923U CN208380923U CN201820828917.4U CN201820828917U CN208380923U CN 208380923 U CN208380923 U CN 208380923U CN 201820828917 U CN201820828917 U CN 201820828917U CN 208380923 U CN208380923 U CN 208380923U
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- blade
- centrifugal fan
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- wheel disc
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- 230000007704 transition Effects 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model relates to a kind of S type vanes close formula impellers for Small Centrifugal Fan.It includes preceding wheel disc, rear trochal disc and blade, preceding wheel disc and rear trochal disc coaxial arrangement, before blade is circumferentially vertically mounted at equal intervals clockwise or counter-clockwise between wheel disc and rear trochal disc, the radial section of blade is S-type, adjacent two blades, preceding wheel disc and rear trochal disc forms airflow channel, and the middle part arc transition section thickness of blade is maximum, and arc section thickness takes second place at the outer end of blade, arc section thickness is minimum at the inner end of blade, and the inner end of blade is provided with the notch of arc.A kind of S type vanes close formula impeller for Small Centrifugal Fan of the utility model, air-flow traveling is smooth, and can increase air hydrodynamic and flow velocity to a certain extent.
Description
Technical field
The utility model relates to a kind of impeller more particularly to a kind of S type vanes close formula leaves for Small Centrifugal Fan
Wheel, belongs to mechanical equipment technical field.
Background technique
Centrifugal blower is to improve gas pressure by the mechanical energy of input and supply gas side by side the machinery of body, it is a kind of driven
Fluid machinery.Centrifugal blower is widely used in the ventilation of factory, mine, tunnel, cooling tower, vehicle, ship and building, dust discharge
And cooling；The ventilation of boiler and industrial furnace and air inducing；Cooling and ventilation in the apparatus of air conditioning and domestic electric appliance；Paddy
It the drying of object and selects and recommends；Inflation and propulsion of wind-tunnel wind regime and aircushion vehicle etc..
Chinese utility model patent (Patent No.: 200820041007.8) discloses a kind of small-sized high speed centrifugal blower fan use
The enclosed impeller of " S " type new blade, including rear trochal disc and blade, wherein blade is circumferentially equidistant clockwise or counterclockwise
Be vertically mounted on rear trochal disc, and the cross section of blade be in " S " type.There are the following problems for the impeller of such structure: 1,
Adjacent two blades form airflow channel, due to the end of blade be it is straight, when air enters airflow channel, blade
End can more or less air-flow be interfered to advance, so as to cause the underpower of centrifugal blower；2, the thickness of blade is uniform,
Such structure is in practice, and air hydrodynamic increases and flow velocity increasing is unobvious, and in terms of aerodynamics angle, there is also excellent
The possibility of change.
Summary of the invention
Purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of S type blades for Small Centrifugal Fan
Enclosed impeller.
Purpose of the utility model is realized as follows:
A kind of S type vanes close formula impeller for Small Centrifugal Fan, its main feature is that: it is described to be used for Small Centrifugal Fan
S type vanes close formula impeller include preceding wheel disc, rear trochal disc and blade, preceding wheel disc and rear trochal disc coaxial arrangement, blade is circumferentially
Before being vertically mounted at equal intervals clockwise or counter-clockwise between wheel disc and rear trochal disc, the radial section of blade is in type, adjacent
Two blades, preceding wheel disc and rear trochal disc form airflow channel, the middle part arc transition section thickness of blade is maximum, the outer end of blade
Place's arc section thickness takes second place, and arc section thickness is minimum at the inner end of blade, and the inner end of blade is provided with the notch of arc.
A kind of S type vanes close formula impeller for Small Centrifugal Fan of the utility model, circular arc at the outer end of blade
Radius of curvature R 1 is greater than circular arc curvature radius R2 at the inner end of blade, and two circular arcs of size are formed by connecting by arc transition section.
A kind of S type vanes close formula impeller for Small Centrifugal Fan of the utility model, circular arc at the inner end of blade
With a thickness of 0.1 ~ 2mm, at the outer end of blade circular arc with a thickness of 1 ~ 2.5mm, the middle part arc transition section of blade with a thickness of 2.5 ~
4.5mm。
Compared with prior art, the utility model has the beneficial effects that
A kind of S type vanes close formula impeller for Small Centrifugal Fan of the utility model, the inner end of blade is provided with arc
The notch of shape, therefore air-flow can be smoothly passed over and will not be interfered, the thickness of blade is gradual change, with existing equal thickness
Blade is compared, and air-flow is advanced more smooth in airflow channel, can increase air hydrodynamic and flow velocity to a certain extent.
Detailed description of the invention
Fig. 1 is a kind of side view of the S type vanes close formula impeller for Small Centrifugal Fan of the utility model.
Fig. 2 is the radial cross-section of Fig. 1.
Fig. 3 is the enlarged drawing of two neighboring blade.
Fig. 4 is the partial enlarged view of the inner end of blade.
In figure:
Preceding wheel disc 1,
Rear trochal disc 2,
Blade 3,
Notch 3.1,
Air inlet 4,
Air outlet 5,
Shaft coupling 6,
Circular arc curvature radius R1 at outer end,
Circular arc curvature radius R2 at inner end.
Specific embodiment
Referring to Fig. 1-4, the utility model relates to a kind of S type vanes close formula impellers for Small Centrifugal Fan, it is wrapped
Wheel disc 1, rear trochal disc 2, blade 3 and shaft coupling 6 before including, preceding wheel disc 1 and rear trochal disc 2 are coaxially disposed, and preceding 1 outside center of wheel disc is set
Be equipped with air inlet 4, be provided with the shaft coupling 6 connecting with power section at 2 center of rear trochal disc, blade 3 circumferentially clockwise or
Before being vertically mounted at equal intervals counterclockwise between wheel disc 1 and rear trochal disc 2, the radial section of blade 3 is S-type, and blade 3 is outer
Circular arc curvature radius R1 is greater than circular arc curvature radius R2 at the inner end of blade 3 at end, and two circular arcs of size pass through arc transition section
It is formed by connecting, the inner end of the blade 3 is provided with the notch 3.1 of arc, and circular arc is at the inner end of blade 3 with a thickness of 0.1 ~ 2mm, leaf
Circular arc is at the outer end of piece 3 with a thickness of 1 ~ 2.5mm, and the middle part arc transition section of blade 3 is with a thickness of 2.5 ~ 4.5mm, and adjacent two
Blade 3, preceding wheel disc 1 and rear trochal disc 2 form airflow channel.
Working principle:
In high-speed rotation process, the air inlet 4 of the premenstrual wheel disc 1 of air-flow enters the import in said flow channel to impeller, most
It is projected afterwards from the outlet of airflow channel；Since the inner end of blade 3 is provided with the notch 3.1 of arc, air-flow can smoothly lead to
It crosses and will not be interfered, the thickness of blade 3 is gradual change, and compared with existing straight blade, air-flow is in airflow channel
That advances is more smooth, can increase air hydrodynamic and flow velocity to a certain extent.
Claims (3)
1. a kind of S type vanes close formula impeller for Small Centrifugal Fan, it is characterised in that: described to be used for Small Centrifugal Fan
S type vanes close formula impeller include preceding wheel disc, rear trochal disc and blade, preceding wheel disc and rear trochal disc coaxial arrangement, blade is circumferentially
Before being vertically mounted at equal intervals clockwise or counter-clockwise between wheel disc and rear trochal disc, the radial section of blade is S-type, adjacent
Two blades, preceding wheel disc and rear trochal disc form airflow channel, the middle part arc transition section thickness of blade is maximum, the outer end of blade
Place's arc section thickness takes second place, and arc section thickness is minimum at the inner end of blade, and the inner end of blade is provided with the notch of arc.
2. a kind of S type vanes close formula impeller for Small Centrifugal Fan according to claim 1, it is characterised in that:
Circular arc curvature radius R1 is greater than circular arc curvature radius R2 at the inner end of blade at the outer end of blade, and two circular arcs of size pass through circular arc
Changeover portion is formed by connecting.
3. a kind of S type vanes close formula impeller for Small Centrifugal Fan according to claim 1, it is characterised in that:
Circular arc is at the inner end of blade with a thickness of 0.1 ~ 2mm, and circular arc is at the outer end of blade with a thickness of 1 ~ 2.5mm, the middle part circular arc mistake of blade
Section is crossed with a thickness of 2.5 ~ 4.5mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018208050731 | 2018-05-29 | ||
| CN201820805073 | 2018-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208380923U true CN208380923U (en) | 2019-01-15 |
Family
ID=64968474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820828917.4U Active CN208380923U (en) | 2018-05-29 | 2018-05-31 | S type vanes close formula impeller for Small Centrifugal Fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208380923U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360153A (en) * | 2019-06-23 | 2019-10-22 | 北京交通大学 | A kind of tunnel ventilation blower |
-
2018
- 2018-05-31 CN CN201820828917.4U patent/CN208380923U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360153A (en) * | 2019-06-23 | 2019-10-22 | 北京交通大学 | A kind of tunnel ventilation blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: S-shaped blade enclosed impeller for small centrifugal fans Granted publication date: 20190115 Pledgee: Jiangyin branch of Bank of China Ltd. Pledgor: JIANGYIN FARMING MACHINERY PLANT Registration number: Y2024980020946 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |