CN217783845U - High aerodynamic centrifugal fan impeller assembly - Google Patents
High aerodynamic centrifugal fan impeller assembly Download PDFInfo
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- CN217783845U CN217783845U CN202220993107.0U CN202220993107U CN217783845U CN 217783845 U CN217783845 U CN 217783845U CN 202220993107 U CN202220993107 U CN 202220993107U CN 217783845 U CN217783845 U CN 217783845U
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- annular sleeve
- blade
- centrifugal fan
- wheel disc
- fan impeller
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Abstract
The utility model discloses a centrifugal fan impeller subassembly of high pneumatics nature belongs to centrifugal fan technical field. The second wheel disc is composed of a first annular sleeve, a second annular sleeve and a connecting cylinder embedded into the first annular sleeve and the second annular sleeve, a plurality of first blades are fixed on the surface, opposite to the second annular sleeve, of the first annular sleeve along the periphery of the connecting cylinder body, a plurality of second blades are arranged on the surface, opposite to the first annular sleeve, of the second annular sleeve along the periphery of the connecting cylinder body, and a limiting ring is arranged between each second blade and the second annular sleeve; a plurality of third blades are uniformly distributed on the first wheel disc along the axial center circumference of the wheel disc; the third blade is longer than the first blade and the second blade, and the first blade is longer than the second blade. The utility model discloses can increase the circulation of blade air current when rotatory, reduce and block up, the second blade can the diffusion of the first blade of effectual control and third blade suction surface air current, improves the load, reduces the adverse pressure gradient, reduces the separation that flows to improve the pneumatics.
Description
Technical Field
The utility model belongs to the technical field of centrifugal fan, concretely relates to centrifugal fan impeller subassembly of high pneumatics.
Background
The centrifugal fan accelerates gas by using an impeller rotating at a high speed according to the principle that kinetic energy is converted into potential energy, and then decelerates and changes the flow direction so as to convert the kinetic energy into the potential energy. It is widely used in ventilation, cooling and dust removal in factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilating and air inducing of boilers and industrial kilns; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.
When the existing centrifugal fan works, airflow is easy to separate in the rear half section of a wheel disc, and if a large blade is used instead, the blade with full chord length is added to cause blockage and efficiency reduction, so that a centrifugal fan impeller assembly with high aerodynamic performance is urgently needed to solve the problems.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: a highly aerodynamic centrifugal fan impeller assembly is provided to solve the above problems of the prior art.
The technical scheme is as follows: a high-aerodynamics centrifugal fan impeller assembly comprises a first wheel disc, a cover plate fixed on one side of the first wheel disc, a connecting piece installed on the other side of the first wheel disc, and a second wheel disc arranged on one side, far away from the first wheel disc, of the connecting piece, wherein the second wheel disc is composed of a first annular sleeve, a second annular sleeve and a connecting cylinder embedded into the first annular sleeve and the second annular sleeve, the outer diameter of the first annular sleeve is larger than that of the second annular sleeve, a plurality of first blades are fixed on the surface, opposite to the second annular sleeve, of the first annular sleeve along the periphery of a connecting cylinder body, a plurality of second blades are arranged on the surface, opposite to the first annular sleeve, of the second annular sleeve along the periphery of the connecting cylinder body, and a limiting ring is arranged between each second blade and the second annular sleeve;
a plurality of third blades are uniformly distributed on the first wheel disc along the axial center circumference of the wheel disc;
the length of the third blade is greater than the length of the first blade and the length of the second blade, and the length of the first blade is greater than the length of the second blade.
In a further embodiment, the second annular sleeve is provided with a plurality of limiting holes along the axial center circumference of the second annular sleeve, and the limiting holes are arc-shaped.
In a further embodiment, a fixing rod is arranged in the limiting hole, one end of the fixing rod is connected to the limiting ring, a through hole is formed in the other end of the fixing rod, a sliding block is installed in the through hole, and one side of the sliding block is abutted to one surface, far away from the first annular sleeve, of the second annular sleeve.
In a further embodiment, the length of the slider is greater than the depth of the through hole.
In a further embodiment, a groove matched with the limit ring is formed in the surface, opposite to the first annular sleeve, of the second annular sleeve, one end of the second blade is fixed on the limit ring, the second blade corresponds to the first blade in a one-to-one mode, and the ends, close to the connecting cylinder, of the second blade and the first blade are not located on the same horizontal line.
In a further embodiment, the first annular sleeve, the second annular sleeve and the connecting cylinder are integrally formed.
In a further embodiment, a shaft sleeve is installed in the center of the cover plate through a bolt, and the shaft sleeve is connected with an output end of a motor driving the first wheel disc to rotate.
Has the beneficial effects that: the utility model relates to a centrifugal fan impeller subassembly of high pneumatics, in order to improve centrifugal fan's pneumatics under the condition of not changing into big blade, and then install a plurality of third blades on first rim plate, install a plurality of first blades and second blade on the second rim plate, and the length of first blade and second blade all is less than the third blade, the length of second blade is less than first blade, can increase the circulation of air current when the blade is rotatory, reduce the jam, simultaneously the second blade can the effectual diffusion of controlling first blade and third blade suction surface air current, improve the load, reduce the adverse pressure gradient, reduce the flow separation, thereby improve the pneumatics; in addition, the one end of second blade is fixed on the spacing ring, installs the dead lever on the spacing ring, and the one end of dead lever runs through spacing hole to can lock the dead lever in spacing downthehole through the slider, the staff of being convenient for adjusts the angle of second blade according to the flow of required air current, thereby increases impeller assembly's pneumatics.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the second wheel disc of the present invention.
Fig. 3 is a schematic structural view of the installation position of the middle stop collar and the fixing rod of the present invention.
The figures are numbered: 1. a shaft sleeve; 2. a cover plate; 3. a first wheel disc; 4. a connecting member; 5. a second wheel disc; 501. a limiting hole; 502. a first ring is sleeved; 503. a second annular sleeve; 6. a first blade; 7. a limiting ring; 8. a second blade; 9. a third blade; 10. a fixing rod; 11. a slide block.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
As shown in fig. 1 to 3, a centrifugal fan impeller assembly of high aerodynamic nature, hereinafter referred to as "the device". The device comprises a cover plate 2, a first wheel disc 3, a connecting piece 4 and a second wheel disc 5. The cover plate 2 is fixed on one side of the first wheel disc 3, one side of the connecting piece 4 is fixedly connected with one side, far away from the cover plate 2, of the first wheel disc 3, and the other side of the connecting piece is fixedly connected with the second wheel disc 5.
The second wheel disc 5 is composed of a first annular sleeve 502, a second annular sleeve 503 and a connecting cylinder, the second wheel disc 5 is designed in an integrated mode, the first annular sleeve 502 and the second annular sleeve 503 are respectively sleeved on two sides of the connecting cylinder, the inner diameters of the first annular sleeve 502 and the second annular sleeve 503 are the same, the outer diameter of the first annular sleeve 502 is larger than the outer diameter of the second annular sleeve 503, a plurality of first blades 6 are fixed on the surface, opposite to the second annular sleeve 503, of the first annular sleeve 502 along the periphery of the connecting cylinder body, a plurality of second blades 8 are fixed on the surface, opposite to the first annular sleeve 502, of the second annular sleeve 503 along the periphery of the connecting cylinder body, the first blades 6 correspond to the second blades 8 one to one, one ends, close to the connecting cylinder, of the second blades 8 and one ends, close to the connecting cylinder, of the first blades 6 are not on the same horizontal line, and the length of the first blades 6 is larger than that of the second blades 8.
A limiting ring 7 is arranged between the second blade 8 and the second annular sleeve 503, one end of the second blade 8 is fixed on the limiting ring 7, a plurality of limiting holes 501 are formed in the second annular sleeve 503 in the axial direction of the second annular sleeve 503, the limiting holes 501 are arc-shaped, one or more fixing rods 10 are installed on the limiting ring 7, one end of each fixing rod 10 extends outwards to penetrate through the limiting holes 501, a through hole is formed in one end of each fixing rod far away from the second annular sleeve 503, a sliding block 11 is installed in each through hole, the length of each sliding block 11 is larger than the depth of each through hole, one side of each sliding block 11 is abutted to one surface of the second annular sleeve 503 far away from the first annular sleeve 502, a groove matched with the corresponding limiting ring 7 is formed in the surface of the second annular sleeve 502, when the angle of the second blade 8 needs to be adjusted to effectively control the diffusion of air flow during rotation, the fixing rods 10 can be rotated, the fixing rods 10 drive the limiting rings 7 to rotate in the axial direction of the second annular sleeve 503, and when the second annular sleeve 502 rotates to an appointed position, the sliding blocks 11 are pushed, the fixing rods 10 are clamped in the limiting holes, the limiting holes 501, the impeller, and the impeller assembly is prevented from rotating, and the impeller 10, and the applicable range of the impeller is enlarged.
As a preferable scheme, the first wheel disc 3 is uniformly distributed with a plurality of third blades 9 along the axial center circumference of the wheel disc, the length of the third blades 9 is greater than that of the first blades 6, so that the second blades 8 mounted at the tail end of the impeller assembly can be ensured to be the smallest blades, the circulation of air flow can be increased when the blades rotate, and the blockage can be reduced.
As a preferred scheme, a shaft sleeve 1 is installed in the center of the cover plate 2 through a bolt, the shaft sleeve 1 is connected with an output end of a motor driving the first wheel disc 3 to rotate, the output end of the motor can be connected with an impeller assembly, and an installation carrier of a power source is provided for rotation of the impeller assembly.
The working principle is as follows: when the output end of the motor is embedded into the shaft sleeve 1, the motor drives the first wheel disc 3 to rotate, so that the second wheel disc 5 arranged on one side of the first wheel disc 3 through the connecting piece 4 is driven to synchronously rotate, and when the wheel disc rotates, airflow generated by the second blade 8 at the tail end of the impeller assembly can supplement airflow diffused by the suction surfaces of the first blade 6 and the third blade 9 during rotation, so that flow separation is reduced, and the aerodynamic performance is improved; meanwhile, the sectional type blades are adopted, so that the blockage and efficiency reduction caused by the length of the blades are effectively reduced.
As noted above, while the invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited to the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a centrifugal fan impeller subassembly of high pneumatics, includes first rim plate, fixes the apron of first rim plate one side is installed the connecting piece of first rim plate opposite side, and set up the second rim plate of first rim plate one side is kept away from to the connecting piece, its characterized in that: the second wheel disc is composed of a first annular sleeve, a second annular sleeve and a connecting cylinder embedded into the first annular sleeve and the second annular sleeve, the outer diameter of the first annular sleeve is larger than that of the second annular sleeve, a plurality of first blades are fixed on the surface, opposite to the second annular sleeve, of the first annular sleeve along the periphery of the connecting cylinder body, a plurality of second blades are arranged on the surface, opposite to the first annular sleeve, of the second annular sleeve along the periphery of the connecting cylinder body, and a limiting ring is arranged between each second blade and the second annular sleeve;
a plurality of third blades are uniformly distributed on the first wheel disc along the axial center circumference of the wheel disc;
the length of the third blade is greater than the length of the first blade and the length of the second blade, and the length of the first blade is greater than the length of the second blade.
2. A highly aerodynamic centrifugal fan impeller assembly as claimed in claim 1, wherein: and the second annular sleeve is provided with a plurality of limiting holes along the axial center circumference of the second annular sleeve, and the limiting holes are arc-shaped.
3. A highly aerodynamic centrifugal fan impeller assembly according to claim 2, wherein: the limiting hole is internally provided with a fixed rod, one end of the fixed rod is connected to the limiting ring, the other end of the fixed rod is provided with a through hole, a sliding block is installed in the through hole, and one side of the sliding block is abutted to the surface, far away from the first annular sleeve, of the second annular sleeve.
4. A highly aerodynamic centrifugal fan impeller assembly according to claim 3, wherein: the length of the sliding block is larger than the depth of the through hole.
5. A highly aerodynamic centrifugal fan impeller assembly as claimed in claim 1, wherein: the second annular sleeve is provided with a groove matched with the limit ring on the surface opposite to the first annular sleeve, one end of the second blade is fixed on the limit ring, the second blade corresponds to the first blade one by one, and one end of the second blade, close to the connecting cylinder, of the first blade is not on the same horizontal line.
6. A highly aerodynamic centrifugal fan impeller assembly according to claim 1, wherein: the annular sleeve I, the annular sleeve II and the connecting cylinder are integrally formed.
7. A highly aerodynamic centrifugal fan impeller assembly according to claim 1, wherein: and the center of the cover plate is provided with a shaft sleeve through a bolt, and the shaft sleeve is connected with the output end of a motor driving the first wheel disc to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220993107.0U CN217783845U (en) | 2022-04-27 | 2022-04-27 | High aerodynamic centrifugal fan impeller assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220993107.0U CN217783845U (en) | 2022-04-27 | 2022-04-27 | High aerodynamic centrifugal fan impeller assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217783845U true CN217783845U (en) | 2022-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220993107.0U Active CN217783845U (en) | 2022-04-27 | 2022-04-27 | High aerodynamic centrifugal fan impeller assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217783845U (en) |
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2022
- 2022-04-27 CN CN202220993107.0U patent/CN217783845U/en active Active
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