CN218780530U

CN218780530U - Mute impeller

Info

Publication number: CN218780530U
Application number: CN202222832196.3U
Authority: CN
Inventors: 周红波
Original assignee: Suzhou Zhiyide Intelligent Technology Co ltd
Current assignee: Suzhou Zhiyide Intelligent Technology Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-03-31
Anticipated expiration: 2032-10-26

Abstract

The utility model discloses a mute impeller, which comprises an impeller base plate; the central part of the impeller base plate is provided with a central through hole; the upper surface of the impeller base plate is provided with regularly-arranged spiral blades; the air flow entering from the central through hole can be thrown outwards from the air flow channel between the adjacent spiral blades; the cross section of the impeller base plate is inclined, and the height of the impeller base plate is gradually reduced from the central through hole; when the mute impeller works, the air flow reduces the speed along with the increase of the cross section area of the air flow channel between the adjacent spiral blades, and the noise also reduces; meanwhile, the limited space can be fully utilized, so that the fan is more compact.

Description

Mute impeller

Technical Field

The utility model relates to the field of dust collectors, in particular to a dust collector which can reduce the speed of airflow along with the increase of the cross section area of an airflow channel between adjacent spiral blades and reduce the noise; meanwhile, the limited space can be fully utilized, so that the fan is a more compact mute impeller.

Background

The working principle of the dust collector is that a fan of the dust collector rotates at a high speed, air is sucked from a suction inlet, a dust barrel generates certain vacuum, dust enters the dust barrel and is separated out, and clean air flow is discharged through the fan; when the air conditioner works, air flow thrown out from the space between the adjacent spiral blades firstly touches the side wall of the groove on the upper surface of the air inlet base and then climbs, and after the air flow overturns the side wall, the air flow is discharged from the air outlet holes uniformly distributed on the air outlet cover; the fan increases the path of the airflow, and also has the problem of changing the advancing direction of the airflow, thereby causing energy loss and simultaneously having large noise; in addition, the cross section of the impeller base plate of the impeller is horizontal and even upwarps, namely, the cross section is kept horizontal from the central through hole of the impeller and even gradually raised to a height; this results in the cross-sectional area of the air flow path between adjacent helical blades remaining constant or even decreasing gradually, the air flow is constant with the change of the cross-sectional area of the air flow path between adjacent helical blades, and even the noise is increased with the increase of the speed.

Therefore, the speed of the airflow is reduced along with the increase of the cross-sectional area of the airflow channel between the adjacent spiral blades, and the noise is reduced; meanwhile, the limited space can be fully utilized, so that the fan is a more compact mute impeller.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a spiral blade which can reduce the speed of the airflow along with the increase of the cross section area of the airflow channel between the adjacent spiral blades and reduce the noise; meanwhile, the limited space can be fully utilized, so that the fan is a more compact mute impeller.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a mute impeller comprises an impeller base plate; the central part of the impeller base plate is provided with a central through hole; the upper surface of the impeller base plate is provided with regularly-arranged spiral blades; the air flow entering from the central through hole can be thrown outwards from the air flow channel between the adjacent spiral blades; the cross section of the impeller base plate is inclined and gradually reduces in height from the central through hole.

Preferably, the cross section of the impeller base plate forms an included angle of 0-45 degrees with the horizontal plane.

Preferably, the cross section of the impeller base plate forms an included angle of 15 degrees with the horizontal plane.

Preferably, the fan for the mute impeller comprises a main body, an air inlet base and an air outlet cover; the main body is connected with the air inlet base through a bracket; the main body is used for mounting a motor; an output shaft of the motor is connected with the impeller top cover and used for driving the impeller top cover to rotate; the impeller is fixed on the lower surface of the impeller top cover and rotates along with the impeller top cover; the central air guide hole of the air inlet base is at least partially inserted into the central through hole on the impeller; the main body and the air inlet base are arranged in the air outlet cover, the main body and the air outlet cover are sealed by a second sealing ring, and the air inlet base and the air outlet cover are sealed by a first sealing ring; most of the side surfaces of the bracket are hollowed out.

Preferably, the impeller head is disposed inside the support.

Preferably, the bracket comprises an upper connecting part and a lower connecting part; the upper connecting part is positioned above the lower connecting part, and the upper connecting part is connected with the lower connecting part through connecting blocks arranged at intervals.

Preferably, the connecting blocks are uniformly distributed.

Preferably, the upper connecting part is annular; the lower connecting part is also annular; the connecting blocks are 4 and evenly distributed.

Preferably, after assembly, the highest point of the periphery of the upper surface of the air inlet base is not higher than half of the height of the helical blades on the impeller.

Because of the application of above-mentioned technical scheme, compared with the prior art, the utility model has the following advantage:

the cross section of the impeller base plate in the mute impeller is inclined, and the height is gradually reduced from the central through hole, so that the cross section area of an airflow channel between adjacent spiral blades can be gradually increased, the speed of the airflow can be reduced along with the increase of the cross section area of the airflow channel between the adjacent spiral blades during work, and the noise can be reduced; meanwhile, the limited space can be fully utilized by the arrangement, so that the fan is more compact.

Drawings

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

fig. 1 is a three-dimensional enlarged view of the mute impeller of the present invention;

fig. 2 is an enlarged sectional view of the mute impeller according to the present invention;

fig. 3 is a three-dimensional structure diagram of a fan for a mute impeller according to the present invention;

fig. 4 is a front view of a fan for a silent impeller according to the present invention;

FIG. 5 is a cross-sectional view of FIG. 4;

fig. 6 is a perspective view of a fan with a removed air outlet cover according to the present invention;

fig. 7 is a perspective view of a second angle of the fan with the air outlet cover removed according to the present invention;

fig. 8 is a three-dimensional enlarged view of a fan bracket applied to the silent impeller according to the present invention;

wherein: 1. a main body; 2. an air inlet base; 3. a support; 4. a motor; 5. an impeller head cover; 6. an impeller; 7. an air outlet cover; 8. a first seal ring; 9. a second seal ring; 31. an upper connecting portion; 32. a lower connecting portion; 33. connecting blocks; 61. an impeller base plate; 62. a blade; 63. a central through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-8, the mute impeller of the present invention includes an impeller base plate 61; the central part of the impeller base plate 61 is provided with a central through hole 63; the upper surface of the impeller base plate 61 is provided with regularly arranged helical blades 62; the air flow entering from the central through hole 63 can be thrown outwards from the air flow channel between the adjacent helical blades 62; the impeller base plate 61 is inclined in cross section and gradually decreases in height from the central through hole 63.

In this embodiment, the cross section of the impeller base plate 61 forms an angle of 0 to 45 ° with the horizontal plane, and the most preferable angle is 15 °.

The fan applied to the mute impeller comprises a main body 1, an air inlet base 2 and an air outlet cover 7; the main body 1 is connected with the air inlet base 2 through a bracket 3; the main body 1 is used for installing a motor 4; the impeller top cover 5 is arranged inside the bracket 3; an output shaft of the motor 4 is connected with the impeller top cover 5 and used for driving the impeller top cover 5 to rotate; the impeller 6 is fixed on the lower surface of the impeller top cover 5 and rotates along with the impeller top cover 5; a central air guide hole (not marked) of the air inlet base 2 is at least partially inserted into a central through hole 63 on the impeller 6; the main part 1 and the air inlet base 2 are arranged in the air outlet cover 7, the main part 1 and the air outlet cover 7 are sealed by a second sealing ring 9, and the air inlet base 2 and the air outlet cover 7 are sealed by a first sealing ring 8.

The bracket 3 comprises an upper connecting part 31 and a lower connecting part 32; the upper connecting part 31 is positioned above the lower connecting part 32, and the upper connecting part 31 and the lower connecting part 32 are connected through connecting blocks 33 arranged at intervals; the connecting blocks 33 are uniformly distributed; in this embodiment, the upper connecting portion 31 has a circular ring shape; the lower connecting portion 32 is also annular; the connecting blocks 33 are 4 and uniformly distributed.

After assembly, the highest point of the periphery of the upper surface of the air inlet base 2 is not higher than half of the height of the spiral blade 62 on the impeller 6.

Specifically, when the air conditioner works, external air flow enters from a central air guide hole in the middle of the lower surface of the air inlet base 2, is thrown out from between adjacent spiral blades after being stirred by the impeller 6, and after the air conditioner is assembled, the highest point of the periphery of the upper surface of the air inlet base 2 is not higher than half of the height of the spiral blades; most of the air flow thrown out from the adjacent spiral blades can be directly discharged from the air outlet holes uniformly distributed on the air outlet cover 7, namely, the bracket 3 hardly blocks the advancing direction of the air flow thrown out from the adjacent spiral blades and hardly forces the air flow thrown out from the adjacent spiral blades to change the original advancing direction, namely, the route of the air flow is direct, shortest and almost without blocking, so that the efficiency is high and the noise is low; meanwhile, the cross section of the impeller base plate 61 is inclined and gradually decreases in height from the central through hole 63, which causes the cross section area of the airflow channel between the adjacent spiral blades 62 to gradually increase, and during operation, the airflow decreases in speed as the cross section area of the airflow channel increases, and accordingly, the noise decreases.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the cross section of the impeller base plate 61 in the mute impeller of the utility model is inclined, and the height is gradually reduced from the central through hole 63, which can cause the cross section area of the airflow channel between the adjacent spiral blades 62 to be gradually increased, when in work, the airflow can reduce the speed along with the increase of the cross section area of the airflow channel between the adjacent spiral blades, and the noise can be reduced; meanwhile, the arrangement can make full use of the limited space, so that the fan is more compact.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A mute impeller comprises an impeller base plate; the central part of the impeller base plate is provided with a central through hole; the upper surface of the impeller base plate is provided with regularly-arranged spiral blades; the air flow entering from the central through hole can be thrown outwards from the air flow channel between the adjacent spiral blades; the method is characterized in that: the cross section of the impeller base plate is inclined and gradually reduces in height from the central through hole.

2. The mute impeller according to claim 1, wherein: the included angle between the cross section of the impeller base plate and the horizontal plane is 0-45 degrees.

3. The mute impeller according to claim 2, wherein: the cross section of the impeller base plate and the horizontal plane form an included angle of 15 degrees.

4. A silent impeller according to claim 1 or 2 or 3, wherein: the fan for the mute impeller comprises a main body, an air inlet base and an air outlet cover; the main body is connected with the air inlet base through a bracket; the main body is used for mounting a motor; an output shaft of the motor is connected with the impeller top cover and used for driving the impeller top cover to rotate; the impeller is fixed on the lower surface of the impeller top cover and rotates along with the impeller top cover; the central air guide hole of the air inlet base is at least partially inserted into the central through hole on the impeller; the main body and the air inlet base are arranged in the air outlet cover, the main body and the air outlet cover are sealed by a second sealing ring, and the air inlet base and the air outlet cover are sealed by a first sealing ring; most of the side surfaces of the bracket are hollowed out.

5. The silent impeller according to claim 4, wherein: the impeller top cover is arranged inside the bracket.

6. The silent impeller according to claim 4, wherein: the bracket comprises an upper connecting part and a lower connecting part; the upper connecting part is positioned above the lower connecting part, and the upper connecting part and the lower connecting part are connected through connecting blocks arranged at intervals.

7. The silent impeller according to claim 6, wherein: the connecting blocks are uniformly distributed.

8. The silent impeller according to claim 6, wherein: the upper connecting part is annular; the lower connecting part is also annular; the connecting blocks are 4 and evenly distributed.

9. The mute impeller according to claim 4, wherein: after assembly, the highest point of the periphery of the upper surface of the air inlet base is not higher than half of the height of the spiral blades on the impeller.