CN218093586U

CN218093586U - Fan impeller

Info

Publication number: CN218093586U
Application number: CN202222461755.4U
Authority: CN
Inventors: 谢明; 贺水英
Original assignee: Foshan Froude Electromechanical Technology Co ltd
Current assignee: Foshan Froude Electromechanical Technology Co ltd
Priority date: 2022-09-17
Filing date: 2022-09-17
Publication date: 2022-12-20
Anticipated expiration: 2032-09-17

Abstract

The utility model belongs to the technical field of fan impeller structure, specifically disclose a fan impeller, comprising a base plate, be provided with the blade on the bottom plate, bottom plate center department is equipped with the ring cover, and the blade top is equipped with the roof, and the blade includes long blade and short blade, long blade and short blade interval distribution, short blade angle of intaking, short blade angle of going out wind, the angle of long blade angle of intaking and long blade angle of going out wind is between 30 ~65, and short blade angle of intaking and short blade angle of going out wind are unequal, and long blade angle of intaking and long blade angle of going out wind are unequal, the utility model discloses improve the blade structure, adopted the mode that the arc of different blades distributes, follow-up with long blade, the different angles of short blade and bottom plate are adjusted into, can pass through mutually supporting of blade group when the fan starts, further noise when reducing dust catcher motor operation to satisfy the requirement of user's low noise, improve user experience, follow-up can directly pass through the mode of magnetism and install inside the fan.

Description

Fan impeller

Technical Field

The utility model relates to a fan wheel technical field, in particular to fan wheel.

Background

A blower is a machine for transporting gas, and from the energy point of view, it is a machine that converts the mechanical energy of a prime mover into gas energy, and accelerates the gas using an impeller that rotates at high speed, then decelerates, changes the flow direction, and converts kinetic energy into potential energy (pressure), in the process the impeller being the only component that does work on the gas. Therefore, the impeller is an important part on the fan, the geometric shape, the size, the number of the blades and the manufacturing precision of the impeller have great influence on the performance, at present, the existing blades are uniformly distributed and have consistent length, and when the fan runs, the impeller has the problems of low air supply efficiency and high noise due to the structural problem, so that the normal use of the fan is influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects existing in the prior art, the utility model provides a fan impeller.

The utility model provides a technical scheme that its technical problem adopted is: the fan impeller comprises a bottom plate, wherein blades are arranged on the bottom plate, a ring sleeve is arranged at the center of the bottom plate, a top plate is arranged at the top of each blade, and the blades comprise long blades and short blades which are distributed at intervals.

Specifically, an included angle between a tangent line of an inner end point of the short blade and a connecting line from a middle point of the ring sleeve to an inner end point of the short blade is a short blade wind inlet angle, an included angle between a tangent line of an outer end point of the short blade and a connecting line from a middle point of the ring sleeve to an outer end point of the short blade is a short blade wind outlet angle, an included angle between a tangent line of an inner end point of the long blade and a connecting line from a middle point of the ring sleeve to an inner end point of the long blade is a long blade wind inlet angle, and an included angle between a tangent line of an outer end point of the long blade and a connecting line from a middle point of the ring sleeve to an outer end point of the long blade is a long blade wind outlet angle.

More specifically, the short blade air inlet angle, the short blade air outlet angle, the long blade air inlet angle and the long blade air outlet angle are between 30 degrees and 65 degrees, the short blade air inlet angle is not equal to the short blade air outlet angle, and the long blade air inlet angle is not equal to the long blade air outlet angle.

As a further explanation of the above technical solution, the blades at least include a group of long blades and short blades, each long blade and each short blade are evenly distributed on the bottom plate in an arc shape, and the short blade is disposed close to the previous long blade or the next long blade.

Specifically, the long blades extend from the ring sleeve to the outer edge of the bottom plate, and the short blades extend from the ring sleeve to 2/3 of the top plate.

More specifically, the diameter of the short blade is 0.8 to 0.9 times of the diameter of the long blade.

As a further explanation of the above technical solution, the long blade and the short blade have the same thickness, and gradually decrease from the outer circle of the bottom plate to the outer circle of the ring sleeve.

As a further explanation of the above technical solution, the long blades and the short blades are integrally formed on the bottom plate, and the ring sleeve is integrally formed on the bottom plate.

The utility model discloses still disclose a fan, the fan has still included fan wheel.

The utility model has the advantages that: the utility model discloses improve the blade structure, adopted the mode that the arc of different blades distributes, follow-up with the contained angle regulation one-tenth different angles of long blade, short blade and bottom plate, can pass through mutually supporting of blading when the fan starts, noise when further reduction dust catcher motor operates to satisfy the requirement of user's low noise, improve user experience, follow-up ring cover can be directly installed inside the fan through the mode of magnetism absorption.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the structure of an embodiment of the present invention;

fig. 3 is a first schematic view of the air flow according to the embodiment of the present invention;

FIG. 4 is a second schematic view of the air flow according to the embodiment of the present invention;

shown in the figure: bottom plate 1, blade 2, long blade 21, short blade 22, ring cover 3, roof 4.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 and 2, the utility model provides a fan impeller, including bottom plate 1, be provided with blade 2 on bottom plate 1, bottom plate 1 center department is equipped with ring cover 3, blade 2 top is equipped with roof 4, blade 2 includes long blade 21 and short blade 22, through with long blade 21 and short blade 22 interval distribution, can guarantee that long blade 21 and short blade 22 do not produce the contact in the during operation, has satisfied the air-out requirement of impeller;

the blades 2 at least comprise a group of long blades 21 and short blades 22, each long blade 21 and each short blade 22 are uniformly distributed on the bottom plate 1 in an arc shape, one or more groups of long blades 21 and short blades 22 can be arranged on the bottom plate 1, the lengths of the groups of long blades can be equal or unequal, the lengths of the groups of short blades can be equal or unequal, the noise reduction effect of the motor is further improved by adjusting the combination form of the groups of blades, and the subsequent short blades 22 are arranged close to the previous long blade 21 or the next long blade 21, so that the long blades 21 and the short blades 22 can be separated to form an air supply flow channel, and the impeller can supply air better;

the long blades 21 and the short blades 22 are equal in thickness to ensure that the impeller does not exist, the long blades 21 and the short blades 2 are integrally formed on the bottom plate 1, and the ring sleeve 3 is integrally formed on the bottom plate 1 to ensure the integral strength of the impeller.

As shown in the attached figures 1 and 2, the long blades 21 extend from the ring sleeve 3 to the outer edge of the bottom plate 1, the short blades 22 extend from the ring sleeve 3 to 2/3 of the top plate 4, the short blades 22 are arranged at 2/3 of the top plate 4 to form a notch, when the impeller works, the notch can reduce friction between wind and a fan shell, so that noise of the fan during working is reduced, when the fan works, the diameter A of the short blades 22 is 0.8 to 0.9 times of the diameter B of the long blades 21, and the length ratio of the diameter A of the short blades 22 to the diameter B of the long blades 21 is controlled within 0.6 to 0.9.

As shown in fig. 1 and 2, the long blades 21 and the short blades gradually decrease from the outer circumference of the base plate 1 to the outer circumference of the ring sleeve 3.

As shown in the attached figures 1 and 2, the long blades 21 extend from the ring sleeve 3 to the outer edge of the bottom plate 1, the short blades 22 extend from the ring sleeve 3 to 2/3 of the top plate 4, and the diameter of the short blades 22 is 0.8 to 0.9 times of that of the long blades 21.

As shown in fig. 1, 2, 3 and 4, an included angle between a tangent line of an inner end point of the short blade 22 and a connecting line from a midpoint of the ring sleeve 3 to an inner end point of the short blade 22 is a wind inlet angle α of the short blade 22, an included angle between a tangent line of an outer end point of the short blade 22 and a connecting line from a midpoint of the ring sleeve 3 to an outer end point of the short blade 22 is a wind outlet angle β of the short blade 22, an included angle between a tangent line of an inner end point of the long blade 21 and a connecting line from a midpoint of the ring sleeve 3 to an inner end point of the long blade 21 is a wind inlet angle γ of the long blade 21, and an included angle between a tangent line of an outer end point of the long blade 21 and a connecting line from a midpoint of the ring sleeve 3 to an outer end point of the long blade 21 is a wind outlet angle θ of the long blade 21;

further, the wind inlet angle α of the short blade 22, the wind outlet angle β of the short blade 22, the wind inlet angle γ of the long blade 21, and the wind outlet angle θ of the long blade 21 need to be set within a range of 30 ° to 65 °.

When the impeller is installed in the fan, when air enters the air inlet angles of the long blades 21 and the short blades 22 at the same time, the flow velocity of the air inlet end of the impeller can be basically equal, when subsequent air flows into the air outlet of the short blades 22, the space outside the impeller can be enlarged, the flow velocity of the air flow can be instantly reduced, and the overall noise of the fan is reduced by reducing the flow velocity of the external air;

the impeller is designed to be matched with the short blades 22 and the long blades 21, so that the whole air outlet area of the impeller can be increased, and the impeller is arranged in the fan, so that the whole flow speed of the fan is reduced, and the noise generated by the fan is reduced; on the other hand, the short blades 22 are arranged in the impeller, and the energy consumption of the impeller is lower than that of an impeller only adopting a single-size blade through the matching of the short blades 22 and the long blades 21 during working, so that the energy consumption of the working of a motor can be reduced when the impeller is used;

further, the short blades 22 and the long blades 21 are matched to work, so that the wind pressure generated when the impeller is installed in the fan is not reduced, the energy consumption of the fan is reduced, and the working efficiency of the fan is guaranteed.

In the embodiment, as an optimal choice, the diameter a of the short blade 22 is set to 120mm, the diameter B of the long blade 21 is set to 144mm, the length ratio of a to B is controlled to 0.833, the wind inlet angle α of the short blade 22 is set to 58 °, the wind outlet angle β of the short blade 22 is set to 60 °, the wind inlet angle γ of the long blade 21 is set to 53 °, the wind outlet angle θ of the long blade 21 is set to 58 °, and when the number of the long blade 21 and the number of the short blade 22 are the same, 2 to 4 decibels of noise can be reduced compared with the fan impeller with the conventional structure.

The blades 2 are distributed at intervals, the air supply angle is adjustable, the impeller adopting the structural form of the fan can obviously reduce the noise of the fan during air supply, 1-2 noise can be reduced by 2 to 4 decibels in comparison with a conventional impeller in a form of matching the long blades 21 and the short blades 22, the performance of the motor cannot be influenced, the noise of the motor during operation is obviously improved, and the air supply efficiency of the fan can be ensured.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. A fan wheel, comprising a base plate (1), characterized in that: the novel fan blade is characterized in that blades (2) are arranged on the bottom plate (1), a ring sleeve (3) is arranged in the center of the bottom plate (1), a top plate (4) is arranged at the top of each blade (2), each blade (2) comprises a long blade (21) and a short blade (22), and the long blades (21) and the short blades (22) are distributed at intervals;

an included angle between a tangent line of an inner end point of the short blade (22) and a connecting line from a midpoint of the ring sleeve (3) to the inner end point of the short blade (22) is a wind inlet angle of the short blade (22), an included angle between a tangent line of an outer end point of the short blade (22) and a connecting line from a midpoint of the ring sleeve (3) to an outer end point of the short blade (22) is a wind outlet angle of the short blade (22), an included angle between a tangent line of an inner end point of the long blade (21) and a connecting line from a midpoint of the ring sleeve (3) to an inner end point of the long blade (21) is a wind inlet angle of the long blade (21), and an included angle between a tangent line of an outer end point of the long blade (21) and a connecting line from a midpoint of the ring sleeve (3) to an outer end point of the long blade (21) is a wind outlet angle of the long blade (21);

the angles of the air inlet angle of the short blade (22), the air outlet angle of the short blade (22), the air inlet angle of the long blade (21) and the air outlet angle of the long blade (21) are between 30 degrees and 65 degrees.

2. A fan wheel according to claim 1, characterised in that: the air inlet angle of the short blade (22) is not equal to the air outlet angle of the short blade (22), and the air inlet angle of the long blade (21) is not equal to the air outlet angle of the long blade (21).

3. A fan wheel according to claim 1, characterised in that: the blades (2) at least comprise a group of long blades (21) and short blades (22), each long blade (21) and each short blade (22) are evenly distributed on the bottom plate (1) in an arc shape, and the short blades (22) are arranged close to the previous long blade (21) or the next long blade (21).

4. A fan wheel according to claim 3, characterised in that: the long blades (21) extend from the ring sleeve (3) to the outer edge of the bottom plate (1), and the short blades (22) extend from the ring sleeve (3) to 2/3 of the top plate (4).

5. A fan wheel according to claim 3, characterised in that: the diameter of the short blade (22) is 0.8 to 0.9 times of that of the long blade (21).

6. A fan wheel according to claim 1, characterised in that: the long blade (21) and the short blade (22) are equal in thickness.

7. A fan wheel according to claim 6, characterised in that: the long blades (21) and the short blades are gradually reduced from the excircle of the bottom plate (1) to the excircle of the ring sleeve (3).

8. A fan wheel according to claim 1, characterised in that: the long blades (21) and the short blades (2) are integrally formed on the bottom plate (1), and the ring sleeve (3) is integrally formed on the bottom plate (1).

9. A fan comprising a fan wheel according to any one of claims 1 to 8.