CN202789706U - Centrifugal fan impeller structure of air-conditioner ceiling machine - Google Patents
Centrifugal fan impeller structure of air-conditioner ceiling machine Download PDFInfo
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- CN202789706U CN202789706U CN 201220293685 CN201220293685U CN202789706U CN 202789706 U CN202789706 U CN 202789706U CN 201220293685 CN201220293685 CN 201220293685 CN 201220293685 U CN201220293685 U CN 201220293685U CN 202789706 U CN202789706 U CN 202789706U
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- ceiling machine
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- blade
- impeller body
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Abstract
The utility model provides a centrifugal fan impeller structure of an air-conditioner ceiling machine. The centrifugal fan impeller structure of the air-conditioner ceiling machine comprises an impeller body, wherein vanes are unevenly distributed on the impeller body along the circumference of the impeller body, and at the same time, the dimension of a radial included angle a between each vane and the impeller body is not uniform, and for specific expression, a1 =/ a2 =/ a3 =/ a4..., and a1 + a2 + a3 + a4 +...= 360 degrees. The dimension of a circle center included angle b between each two adjacent vanes is not uniform, for specific expression, b1 =/ b2 =/ b3 =/ b4..., and b1 + b2 + b3 + b4 +... = 360 degrees. After the scheme is adopted, the centrifugal fan impeller structure of the air-conditioner ceiling machine has the greatest advantage that by adoption of unevenly distributed vanes, the vanes are enabled to beat surrounding air in a non-periodic mode, and therefore fundamental frequency noise of a fan is effectively reduced, and the aim of reducing the whole noise of the air-condition ceiling machine is achieved.
Description
Technical field
The utility model relates to the technical field of air-conditioning ceiling machine, refers in particular to a kind of centrifugal blower fan blade wheel structure of air-conditioning ceiling machine.
Background technique
Known in the industry, the layout of the centrifugal fan blade of existing air-conditioning ceiling machine generally all is even distribution, namely be that angle between the adjacent blades equates, this structural design can increase the Rotation Noise of blower fan, when rotational noise is the active wheel rotation, gas medium around blade on the wheel hits, the pressure pulsation that causes ambient gas forms, for given space particle, whenever blade pass is out-of-date, the pressure that hits this particle gas just rises and falls once rapidly, rotation blade skims over continuously one by one, just constantly produce pressure pulsation, cause the very large nonuniformity of air-flow, thus radiated noise towards periphery.Can cause like this blade periodically to pat ambient air, and air-flow form the fundamental frequency noise, thereby causes air-conditioning ceiling machine overall noise larger periodically to spiral case formation bump.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of reasonable in design reliable, can effectively reduce the fundamental frequency noise of blower fan, reduces the centrifugal blower fan blade wheel structure of the air-conditioning ceiling machine of air-conditioning ceiling machine overall noise.
For achieving the above object, technological scheme provided by the utility model is: a kind of centrifugal blower fan blade wheel structure of air-conditioning ceiling machine, include impeller body, on the described impeller body along its blade Heterogeneous distribution that circumferentially distributes, simultaneously, not of uniform size the causing of radially angle a of every blade and impeller body is specially a1 ≠ a2 ≠ a3 ≠ a4......, and a1+a2+a3+a4+......=360 °; Not of uniform size the causing of center of circle angle b between adjacent blades is specially b1 ≠ b2 ≠ b3 ≠ b4......, and b1+b2+b3+b4+......=360 °.
Described impeller body includes blade, motor cabinet, wind loop, impeller hub disk, wherein, described motor cabinet correspondence is located at the intermediate portion of impeller hub disk, simultaneously, this impeller hub disk and wind loop are parallel to each other, the blade correspondence is located between this impeller hub disk and the wind loop, and is fixedly connected with them respectively.
The utility model is after having adopted such scheme, its great advantage is that the utility model is by the blade of Heterogeneous distribution, so that but ambient air is patted on blade aperiodicity ground, effectively reduce the fundamental frequency noise of blower fan, reach the purpose that reduces air-conditioning ceiling machine overall noise.
Description of drawings
Fig. 1 is axonometric drawing of the present utility model.
Fig. 2 is plan view of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with specific embodiment.
Shown in accompanying drawing 1 and accompanying drawing 2, the centrifugal blower fan blade wheel structure of the described air-conditioning ceiling machine of present embodiment, include impeller body 1, wherein, described impeller body 1 includes blade 2, motor cabinet 3, wind loop 4, impeller hub disk 5, described motor cabinet 3 correspondences are located at the intermediate portion of impeller hub disk 5, simultaneously, this impeller hub disk 5 is parallel to each other with wind loop 4, blade 2 correspondences are located between this impeller hub disk 5 and the wind loop 4, and be fixedly connected with them respectively, and of paramount importance is that the described blade 2 of present embodiment is along the circumferential Heterogeneous distribution of impeller body 1, simultaneously, not of uniform size the causing of radially angle a of every blade 2 and impeller body 1 is specially a1 ≠ a2 ≠ a3 ≠ a4 ≠ a5 ≠ a6 ≠ a7, and a1+a2+a3+a4+a5+a6+a7=360 °; Not of uniform size the causing of center of circle angle b that adjacent blades is 2 is specially b1 ≠ b2 ≠ b3 ≠ b4 ≠ b5 ≠ b6 ≠ b7, and b1+b2+b3+b4+b5+b6+b7=360 °.This structural design effectively reduces the fundamental frequency noise of blower fan so that but ambient air is patted on blade of the present utility model 2 aperiodicity ground, reaches the purpose that reduces air-conditioning ceiling machine overall noise.Therefore, in sum, compared to existing technology, the utility model can effectively solve the drawback that prior art exists, and has improved to a certain extent the total quality of air-conditioning ceiling machine, is worthy to be popularized.
The examples of implementation of the above are the preferred embodiment of the utility model only, are not to limit practical range of the present utility model with this, so the variation that all shapes according to the utility model, principle are done all should be encompassed in the protection domain of the present utility model.
Claims (2)
1. the centrifugal blower fan blade wheel structure of an air-conditioning ceiling machine, include impeller body (1), it is characterized in that: described impeller body (1) is upper along its blade (2) Heterogeneous distribution that circumferentially distributes, simultaneously, not of uniform size the causing of radially angle a of every blade (2) and impeller body (1), be specially a1 ≠ a2 ≠ a3 ≠ a4......, and a1+a2+a3+a4+......=360 °; Not of uniform size the causing of center of circle angle b between adjacent blades (2) is specially b1 ≠ b2 ≠ b3 ≠ b4......, and b1+b2+b3+b4+......=360 °.
2. the centrifugal blower fan blade wheel structure of a kind of air-conditioning ceiling machine according to claim 1, it is characterized in that: described impeller body (1) includes blade (2), motor cabinet (3), wind loop (4), impeller hub disk (5), wherein, described motor cabinet (3) correspondence is located at the intermediate portion of impeller hub disk (5), simultaneously, this impeller hub disk (5) is parallel to each other with wind loop (4), blade (2) correspondence is located between this impeller hub disk (5) and the wind loop (4), and is fixedly connected with them respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220293685 CN202789706U (en) | 2012-06-21 | 2012-06-21 | Centrifugal fan impeller structure of air-conditioner ceiling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220293685 CN202789706U (en) | 2012-06-21 | 2012-06-21 | Centrifugal fan impeller structure of air-conditioner ceiling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789706U true CN202789706U (en) | 2013-03-13 |
Family
ID=47816975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220293685 Expired - Lifetime CN202789706U (en) | 2012-06-21 | 2012-06-21 | Centrifugal fan impeller structure of air-conditioner ceiling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789706U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734213A (en) * | 2012-06-21 | 2012-10-17 | 广东志高空调有限公司 | Centrifugal fan impeller structure for ceiling mounted air conditioner |
| CN109595199A (en) * | 2018-12-27 | 2019-04-09 | 珠海格力电器股份有限公司 | Centrifugation blade, centrifugal blower and air conditioner |
-
2012
- 2012-06-21 CN CN 201220293685 patent/CN202789706U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734213A (en) * | 2012-06-21 | 2012-10-17 | 广东志高空调有限公司 | Centrifugal fan impeller structure for ceiling mounted air conditioner |
| CN109595199A (en) * | 2018-12-27 | 2019-04-09 | 珠海格力电器股份有限公司 | Centrifugation blade, centrifugal blower and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |