CN215860963U

CN215860963U - High-strength impeller of air blower

Info

Publication number: CN215860963U
Application number: CN202122009605.5U
Authority: CN
Inventors: 袁军; 钟仁志; 韩春江; 蒋玉玺; 姚莹海
Original assignee: Xinlei Compressor Co Ltd
Current assignee: Xinlei Compressor Co Ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-02-18
Anticipated expiration: 2031-08-24

Abstract

The utility model relates to the field of blowers, in particular to a high-strength impeller of a blower. The impeller comprises an impeller body, an axial reinforcing rib, and a main blade, a first shunting blade and a second shunting blade which are fixedly arranged on one side surface of the impeller body, wherein the plurality of main blades, the plurality of first shunting blades and the plurality of second shunting blades are all arranged along the circumferential direction, and the blade shapes of the main blades, the plurality of first shunting blades and the plurality of second shunting blades are all Bezier curves; the first splitter blade and the second splitter blade extend and distribute along the radial direction, the motor shell is provided with an impeller matching groove, and the axial reinforcing rib protrudes out of the other side face of the impeller body along the axial direction and is in circumferential sliding fit with the impeller matching groove. The impeller improves the stability of the blast impeller, increases the strength and rigidity of the blast impeller in the radial direction and the axial direction, and prolongs the service life of the whole equipment.

Description

High-strength impeller of air blower

Technical Field

The utility model relates to the field of blowers, in particular to a high-strength impeller of a blower.

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; 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.

The Chinese utility model patent application (publication No. CN209959557U, published: 20200117) discloses a centrifugal blower impeller and a centrifugal blower thereof, wherein the centrifugal blower impeller adopts an integrally cast impeller disc and a plurality of blades positioned on the impeller disc, each blade is uniformly distributed on the inner periphery of the impeller disc, and the impeller disc is provided with a rotating shaft hole fixedly installed and connected with a rotating main shaft of the centrifugal blower, an axial air inlet communicated with an air inlet channel and a radial air outlet communicated with an air outlet channel; each blade comprises a forward blade section and a backward blade section, wherein the forward blade section is positioned at one end close to the axial gas inlet, the backward blade section is positioned at one end close to the radial gas outlet, and the forward blade section and the backward blade section are connected by adopting a radial blade section; the centrifugal blower has the double technical effects of high pneumatic efficiency and high pneumatic load on the premise of ensuring that the size standard of the centrifugal blower is not changed with the size standard of the conventional impeller disc by carrying out special structural design on the impeller blades.

The prior art has the following defects: the traditional blast impeller is only provided with a plurality of main blades which are distributed in the circumferential direction, and the interval between the two main blades is large, so that when the gas flow is large, the further flow guide of the gas is not facilitated, and the gas flows disorderly between the intervals of the main blades; and then the blast impeller is impacted by the larger radial force and axial force of the high-pressure gas, and the stability of the blast impeller is reduced. Meanwhile, when the interval between the two main blades is larger, the radial structural strength of the air blast impeller is not increased, and the axial structural strength of the air blast impeller is not increased in the axial direction, so that the strength of the whole air blast impeller is low, the rigidity is poor, and the service life of the whole equipment is further shortened.

Disclosure of Invention

The purpose of the utility model is: aiming at the problems, a first splitter blade and a second splitter blade are arranged between two main blades to further guide high-pressure gas so as to reduce the impact of radial force and axial force generated by the high-pressure gas and improve the stability of the blast impeller; meanwhile, the blast impeller is also provided with an axial reinforcing rib, and the first shunting blade and the second shunting blade are equivalent to a radial reinforcing rib; therefore, the strength and rigidity of the blower impeller are increased in the radial direction and the axial direction, and the service life of the whole equipment is prolonged.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a high-strength impeller of a blower comprises an impeller body, an axial reinforcing rib, and a main blade, a first splitter blade and a second splitter blade which are fixedly arranged on one side surface of the impeller body, wherein the main blades, the first splitter blade and the second splitter blade are all arranged along the circumferential direction, and the blade shapes of the main blades, the first splitter blade and the second splitter blade are all Bezier curves; the first splitter blade and the second splitter blade extend and distribute along the radial direction, the motor shell is provided with an impeller matching groove, and the axial reinforcing rib protrudes out of the other side face of the impeller body along the axial direction and is in circumferential sliding fit with the impeller matching groove.

Preferably, the plurality of first splitter vanes are respectively located between two adjacent main vanes at corresponding positions, the plurality of second splitter vanes are located between adjacent main vanes and first splitter vanes at corresponding positions, and the radial lengths of the main vanes, the first splitter vanes, and the second splitter vanes are sequentially decreased.

Preferably, the radially outermost sides of the main vane, the first splitter vane and the second splitter vane all extend to the radial edge of the impeller body.

Preferably, the axial ribs are cylindrical in shape.

Preferably, the top end of the cylindrical column of the axial reinforcing rib is in a round structure.

Preferably, the other side surface of the impeller body is provided with a weight reducing hole for reducing the weight of the impeller body and the load of the motor shaft.

Preferably, the de-weighting holes are symmetrically distributed along the axial center line of the blower wheel.

The high-strength impeller of the air blower adopting the technical scheme has the advantages that:

after the gas enters a larger interval between two adjacent main blades, the first splitter blade and the second splitter blade split the gas again; therefore, the gas flow is more stable, the impact of radial force and axial force generated by high-pressure gas is reduced, and the stability of the blast impeller is improved. Meanwhile, the main blade, the first splitter blade and the second splitter blade are distributed along the radial direction, which is equivalent to a reinforcing rib in the radial direction, so that the radial strength and rigidity of the blast impeller are ensured; the blower impeller is also provided with axial reinforcing ribs which are axially distributed, so that the axial strength and rigidity of the blower impeller are ensured; thereby increasing the strength and rigidity of the blast impeller in the radial direction and the axial direction and prolonging the service life of the whole equipment.

Drawings

Fig. 1 and 2 are schematic structural diagrams of the present invention.

Detailed Description

The following describes in detail embodiments of the present invention with reference to the drawings.

Example 1

As shown in fig. 1 and 2, the high-strength impeller of the blower includes an impeller body 41, an axial reinforcing rib 45, and a main blade 42, a first splitter blade 43, and a second splitter blade 44 fixedly disposed on one side surface of the impeller body 41, wherein the plurality of main blades 42, the plurality of first splitter blades 43, and the plurality of second splitter blades 44 are disposed along a circumferential direction and have a bezier curve in blade shape; the first splitter blade 3 and the second splitter blade 4 are distributed along the radial direction in an extending manner, the motor housing 1 is provided with an impeller fitting groove 11, and an axial reinforcing rib 45 protrudes out of the other side surface of the impeller body 41 along the axial direction and is in circumferential sliding fit with the impeller fitting groove 11. In this way, after the gas enters the larger interval between two adjacent main blades 42, the first splitter blade 43 and the second splitter blade 44 split the gas again; therefore, the gas flow is more stable, the impact of radial force and axial force generated by high-pressure gas is reduced, and the stability of the blast impeller is improved. Meanwhile, the main blades 42, the first splitter blades 43 and the second splitter blades 44 are distributed along the radial direction, which is equivalent to a reinforcing rib in the radial direction, and the radial strength and rigidity of the blower impeller 4 are ensured; the blower impeller 4 is also provided with axial reinforcing ribs 45 which are axially distributed, so that the axial strength and rigidity of the blower impeller 4 are ensured; thereby increasing the strength and rigidity of the blower impeller 4 in both radial and axial directions and improving the service life of the whole equipment.

The plurality of first distribution vanes 43 are respectively located between two adjacent main vanes 42 at corresponding positions, the plurality of second distribution vanes 44 are located between the adjacent main vanes 42 and the first distribution vanes 43 at corresponding positions, and the radial lengths of the main vanes 42, the first distribution vanes 43, and the second distribution vanes 44 are sequentially decreased.

The radially outermost sides of the main blade 42, the first splitter blade 43, and the second splitter blade 44 all extend to the radial edge of the impeller body 41.

The axial ribs 45 are cylindrical in shape.

The top end of the cylinder of the axial reinforcing rib 45 is of a round structure.

The other side surface of the impeller body 41 is provided with a weight reducing hole 46, and the weight reducing hole 46 is used for reducing the weight of the impeller body 41 and the load of the motor shaft 2.

The de-weighting holes 46 are symmetrically distributed along the axial center line of the blower wheel 4.

Claims

1. The high-strength impeller of the blower is characterized by comprising an impeller body (41), an axial reinforcing rib (45), and a main blade (42), a first shunting blade (43) and a second shunting blade (44) which are fixedly arranged on one side surface of the impeller body (41), wherein the plurality of main blades (42), the plurality of first shunting blades (43) and the plurality of second shunting blades (44) are all arranged along the circumferential direction, and the shapes of the three blades are Bezier curves; the first splitter blade (43) and the second splitter blade (44) extend and are distributed along the radial direction, the motor shell (1) is provided with an impeller matching groove (11), and the axial reinforcing rib (45) protrudes out of the other side face of the impeller body (41) along the axial direction and is in circumferential sliding fit with the impeller matching groove (11).

2. The high-strength impeller of the blower according to claim 1, wherein a plurality of first splitter vanes (43) are respectively located between two adjacent main vanes (42) at corresponding positions, a plurality of second splitter vanes (44) are located between the adjacent main vanes (42) and the first splitter vanes (43) at corresponding positions, and the radial lengths of the main vanes (42), the first splitter vanes (43), and the second splitter vanes (44) are sequentially decreased.

3. The high-strength impeller of the blower fan as claimed in claim 1, wherein the radially outermost sides of the main blade (42), the first splitter blade (43) and the second splitter blade (44) extend to the radial edge of the impeller body (41).

4. A high-strength impeller for blowers according to claim 1, wherein the axial reinforcing ribs (45) are cylindrical in shape.

5. The high-strength impeller for the blower according to claim 1, wherein the cylindrical top end of the axial reinforcing rib (45) is of a rounded structure.

6. The high-strength impeller of the blower fan as claimed in claim 1, wherein the other side surface of the impeller body (41) is provided with a weight-reducing hole (46), and the weight-reducing hole (46) is used for reducing the weight of the impeller body (41) and the load of the motor shaft (2).

7. A high-strength impeller according to claim 6, wherein the de-weighting holes (46) are symmetrically distributed along the axial center line of the blower impeller (4).