CN209469602U - A kind of centrifugal blower with reverse inclination blade angle - Google Patents
A kind of centrifugal blower with reverse inclination blade angle Download PDFInfo
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- CN209469602U CN209469602U CN201920079781.6U CN201920079781U CN209469602U CN 209469602 U CN209469602 U CN 209469602U CN 201920079781 U CN201920079781 U CN 201920079781U CN 209469602 U CN209469602 U CN 209469602U
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- impeller
- blade
- reverse inclination
- angle
- centrifugal blower
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Abstract
The utility model relates to the centrifugal blowers that a kind of centrifugal blower with reverse inclination blade angle has reverse inclination blade angle, a kind of centrifugal blower with reverse inclination blade angle has the centrifugal blower of reverse inclination blade angle, including spiral case, impeller assembly and motor, the impeller assembly includes the blade of impeller front disc, impeller hub disk and the reverse inclination angle between impeller front disc and impeller hub disk, and the blade with reverse inclination angle forms polygonal cross-section in blade passage.The utility model has the following beneficial effects: the impeller blade of common centrifugal blower is uniformly distributed perpendicular to impeller front disc and impeller hub disk, the polygonal cross-section blade passage that two different blades of tilt angle are formed makes blade have excellent aeroperformance relative to the impeller with common blade and can mitigate the noise that impeller blade issues in rotary course, while reducing the sharpness of noise tone.
Description
Technical field
The utility model relates to a kind of centrifugal blower, in particular to a kind of centrifugation wind with reverse inclination blade angle
Machine.
Background technique
Existing centrifugal blower mostly uses blade perpendicular to the impeller of impeller front disc and the setting of impeller hub disk, the impeller of formation
Air-flow is easy to produce turbulent flow, to cause centrifugal blower to generate larger noise in use, and noise is sharply picked up the ears, tone
Generation be since fan blade is relative to the regular shuttling movement of static observer and by the phase with adjacent structure
Interaction and the impeller outer that generates, and have has diffuser, come out in the air-flow and diffuser that impeller airflow channel comes out
Air-flow generate interaction, the air-flow interaction between impeller and spiral case results in the periodic of impeller surface and spiral case
Pressure oscillation, these periodic pressure oscillations are the sources of pneumatic tone noise radiation.
Utility model content
The purpose of this utility model is to provide a kind of noise is small, tone it is soft with reverse inclination blade angle from
Heart blower, to solve the problems mentioned in the above background technology.
To achieve the above object, the utility model provides the following technical solutions: a kind of with reverse inclination blade angle
Centrifugal blower, including spiral case, impeller assembly and motor, the impeller assembly include impeller front disc, impeller hub disk and be located at leaf
The blade for taking turns the reverse inclination angle between shroud and impeller hub disk, the blade with reverse inclination angle are formed in blade passage
Polygonal cross-section.
Preferably, the blade with reverse inclination angle is one or more layers.
Preferably, the polygonal cross-section is triangular-section, quadrangular section.
Preferably, impeller inlet diameter D1 is 30mm ~ 40mm, and impeller outlet diameter D2 is 70mm ~ 100mm.
Preferably, vane inlet established angle β 1 is 25 ° ~ 50 °, and blade exit established angle β 2 is 30 ° ~ 45 °.
Preferably, impeller air inlet open height h1 is 5mm ~ 12mm, and impeller outlet air open height h2 is 5mm ~ 12mm, and the leaf
Wheel air inlet open height h1 is greater than impeller outlet air open height h2.
Compared with prior art, the utility model has the beneficial effects that the impeller blade of common centrifugal blower is perpendicular to leaf
Wheel shroud is uniformly distributed with impeller hub disk, and the polygonal cross-section blade passage that two different blades of tilt angle are formed makes blade phase
There is excellent aeroperformance for the impeller with common blade and can mitigate that impeller blade issues in rotary course makes an uproar
Sound, while reducing the sharpness of noise tone.
Detailed description of the invention
Fig. 1 is the utility model structure diagram.
Fig. 2 is the impeller assembly side view of the embodiments of the present invention 1.
Fig. 3 is the blade side view of the utility model embodiment 1.
Fig. 4 is the impeller assembly side view of the utility model embodiment 2.
Fig. 5 is the blade side view of the utility model embodiment 2.
Fig. 6 is the impeller assembly side view of the utility model embodiment 3.
In figure: 1, spiral case；2, impeller assembly；3, impeller front disc；4, impeller hub disk；5, blade.
Specific embodiment
The utility model is further described below with reference to embodiment.
The following examples illustrate the utility model, but cannot be used to limit the protection scope of the utility model.Implement
Condition in example can be adjusted according to actual conditions are further, to the utility model under the concept thereof of the utility model
Method simple modifications belong to the requires of the utility model protection range.
Embodiment 1
Such as Fig. 1, a kind of centrifugal blower with reverse inclination blade angle of the present embodiment, including spiral case 1, impeller assembly
2 and motor, such as Fig. 2-3, impeller assembly include impeller front disc 3, impeller hub disk 4 and be located at impeller front disc 3 and impeller hub disk 4 it
Between reverse inclination angle blade 5, with reverse inclination angle blade 5 blade passage formed diamond-shaped cross-section, the tool
The blade for having reverse inclination angle is multilayer, and impeller inlet diameter D1 is 35mm, and impeller outlet diameter D2 is 75mm, vane inlet
Established angle β 1 is 28 °, and blade exit established angle β 2 is 40 °, and it is 12mm that impeller, which enters the wind open height h1, and impeller outlet air open height h2 is
10mm。
Embodiment 2
Such as Fig. 4-5, a kind of centrifugal blower with reverse inclination blade angle of the present embodiment, including spiral case 1, impeller sets
Part 2 and motor, impeller assembly include impeller front disc 3, impeller hub disk 4 and the phase between impeller front disc 3 and impeller hub disk 4
The blade 5 of anti-obliquity angle, the blade 5 with reverse inclination angle forms triangle section in blade passage, described to have on the contrary
The blade of tilt angle is one layer, and impeller inlet diameter D1 is 40mm, and impeller outlet diameter D2 is 85mm, vane inlet established angle
β 1 is 40 °, and blade exit established angle β 2 is 45 °, and it is 6mm that impeller, which enters the wind open height h1, and impeller outlet air open height h2 is 5.5mm.
Embodiment 3
Such as Fig. 6, a kind of centrifugal blower with reverse inclination blade angle of the present embodiment, including spiral case 1, impeller assembly
2 and motor, impeller assembly includes impeller front disc 3, impeller hub disk 4 and opposite between impeller front disc 3 and impeller hub disk 4
The blade 5 of tilt angle, with reverse inclination angle blade 5 blade passage formed triangle section, it is described have incline on the contrary
The blade of rake angle is one layer, and impeller inlet diameter D1 is 32mm, and impeller outlet diameter D2 is 100mm, vane inlet established angle β
1 is 50 °, and blade exit established angle β 2 is 45 °, and it is 11mm that impeller, which enters the wind open height h1, and impeller outlet air open height h2 is 5mm.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of centrifugal blower with reverse inclination blade angle, including spiral case, impeller assembly and motor, which is characterized in that
The impeller assembly includes impeller front disc, impeller hub disk and the reverse inclination angle between impeller front disc and impeller hub disk
Blade, with reverse inclination angle blade blade passage formed polygonal cross-section.
2. a kind of centrifugal blower with reverse inclination blade angle according to claim 1, it is characterised in that: the tool
The blade for having reverse inclination angle is one or more layers.
3. a kind of centrifugal blower with reverse inclination blade angle according to claim 1, it is characterised in that: described more
Side tee section is triangular-section, quadrangular section.
4. a kind of centrifugal blower with reverse inclination blade angle according to claim 1, it is characterised in that: impeller into
Mouth diameter D1 is 30mm ~ 40mm, and impeller outlet diameter D2 is 70mm ~ 100mm.
5. a kind of centrifugal blower with reverse inclination blade angle according to claim 1, it is characterised in that: blade into
Mouth established angle β 1 is 25 ° ~ 50 °, and blade exit established angle β 2 is 30 ° ~ 45 °.
6. a kind of centrifugal blower with reverse inclination blade angle according to claim 1, it is characterised in that: impeller into
Air port height h1 is 5mm ~ 12mm, and impeller outlet air open height h2 is 5mm ~ 12mm, and impeller air inlet open height h1 is greater than leaf
Take turns outlet air open height h2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920079781.6U CN209469602U (en) | 2019-01-17 | 2019-01-17 | A kind of centrifugal blower with reverse inclination blade angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920079781.6U CN209469602U (en) | 2019-01-17 | 2019-01-17 | A kind of centrifugal blower with reverse inclination blade angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209469602U true CN209469602U (en) | 2019-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920079781.6U Active CN209469602U (en) | 2019-01-17 | 2019-01-17 | A kind of centrifugal blower with reverse inclination blade angle |
Country Status (1)
| Country | Link |
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| CN (1) | CN209469602U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11713769B2 (en) * | 2020-04-20 | 2023-08-01 | Hamilton Sundstrand Corporation | Impeller |
-
2019
- 2019-01-17 CN CN201920079781.6U patent/CN209469602U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11713769B2 (en) * | 2020-04-20 | 2023-08-01 | Hamilton Sundstrand Corporation | Impeller |
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