CN112460066A

CN112460066A - Fan wheel subassembly, fan subassembly and fan

Info

Publication number: CN112460066A
Application number: CN202011522211.3A
Authority: CN
Inventors: 何志超; 王晓妮; 李彬; 张岩; 陈成
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-03-09

Abstract

The invention provides a wind wheel assembly, a fan assembly and a fan. The wind wheel subassembly includes: a hub body; the overflowing channel is arranged on the hub body; the blades are arranged along the circumferential direction of the hub body and arranged in the overflowing channel; along the flowing direction of the fluid, one end of the overflowing channel is an air inlet, the other end of the overflowing channel is an air outlet, the width dimension of the air inlet is L1, the width dimension of the air outlet is L2, and L1/L2 is not less than 1.875. The technical scheme of the invention solves the problem that the air output of the air wheel assembly in the prior art is small.

Description

Fan wheel subassembly, fan subassembly and fan

Technical Field

The invention relates to the technical field of household appliances, in particular to a wind wheel assembly, a fan assembly and a fan.

Background

The air outlet of the bladeless fan is realized by utilizing the high-speed fan hidden in the base, the structure of the fan blade is one of important component parts, the structure of the wind wheel is related to the air volume performance of the whole unit, the wind wheel in the prior art is generally only optimized for the angle of the blade, and the problem of small air outlet volume mostly exists.

Disclosure of Invention

The invention mainly aims to provide a wind wheel assembly, a fan assembly and a fan, and aims to solve the problem that the wind wheel in the prior art is small in air output.

In order to achieve the above object, according to one aspect of the present invention, there is provided a wind wheel assembly including: a hub body; the overflowing channel is arranged on the hub body; the blades are arranged along the circumferential direction of the hub body and arranged in the overflowing channel; along the flowing direction of the fluid, one end of the overflowing channel is an air inlet, the other end of the overflowing channel is an air outlet, the width dimension of the air inlet is L1, the width dimension of the air outlet is L2, and L1/L2 is not less than 1.875.

Further, the width dimension L1 of the air inlet and the width dimension L2 of the air outlet satisfy the following formula: l1 is more than or equal to 20mm and less than or equal to 30mm, and L2 is more than or equal to 16mm and less than or equal to 20 mm.

Further, from the air inlet to the air outlet, the blades comprise a first blade section, a second blade section and a third blade section which are connected in sequence, the thickness of the first blade section is H1, the thickness of the second blade section is H2, the thickness of the third blade section is H3, wherein H1 is not less than H2, and H3 is not less than H2.

Further, the thickness of each of the first and third blade segments decreases in a direction away from the second blade segment.

Further, the thickness dimension of the first blade segment H1, the thickness dimension of the second blade segment H2, and the thickness dimension of the third blade segment H3 satisfy the following equation: h1 is more than 0.5mm and less than 1.5mm, H2 is more than or equal to 1mm and less than or equal to 1.5mm, and H3 is more than 0mm and less than 0.5 mm.

Furthermore, the blade has windward side and leeward side that relative setting, and the one end of keeping away from the second blade section of third blade section is provided with the spoiler, and the spoiler has the convex curved surface towards leeward side.

Furthermore, the spoiler is also provided with a windward surface opposite to the curved surface, and the distance between the curved surface and the windward surface is C, wherein C is more than or equal to 2mm and less than or equal to 3 mm.

Further, the hub body comprises an inner hub and an outer hub which are arranged at intervals, a flow passage is formed between the outer wall surface of the inner hub and the inner wall surface of the outer hub, and the plurality of blades are uniformly arranged at intervals along the circumferential direction of the inner hub.

According to another aspect of the invention, there is provided a fan assembly comprising a drive motor and a fan wheel assembly as described above connected to an output shaft of the drive motor.

According to another aspect of the present invention, there is provided a fan comprising a base and the fan assembly described above disposed within the base.

By applying the technical scheme of the invention, airflow enters the flow passage from the air inlet with larger width by optimizing the width size ratio of the air inlet and the air outlet, so that the air inlet volume can be increased, and the airflow acts through the blades to form high-speed and high-pressure airflow which flows out from the air outlet, so that the air outlet volume of the wind wheel can be increased.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 illustrates a schematic structural view of a wind wheel assembly of an embodiment of the present invention;

FIG. 2 illustrates a rear view of the wind wheel assembly of FIG. 1;

FIG. 3 shows a cross-sectional view of the wind wheel assembly of FIG. 2;

FIG. 4 illustrates a side view of the wind wheel assembly of FIG. 1;

FIG. 5 shows a cross-sectional view of the wind wheel assembly of FIG. 4;

FIG. 6 illustrates a schematic view of the connection of the blades and inner hub of the wind wheel assembly of FIG. 1;

FIG. 7 shows a left side view of the wind wheel assembly of FIG. 6; and

FIG. 8 illustrates a front view of the wind wheel assembly of FIG. 6.

Wherein the figures include the following reference numerals:

10. a hub body; 11. an inner hub; 12. an outer hub; 30. an overflow channel; 31. an air inlet; 32. an air outlet; 40. a blade; 41. a first leaf segment; 42. a second blade segment; 43. a third leaf segment; 44. a spoiler; 45. a curved surface; 46. the windward side.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that, in the embodiment of the present invention, the width dimension L1 of the air inlet 31 refers to the distance between the outer edge of the inner hub 11 and the inner edge of the outer hub 12 along the radial direction of the hub body 10 in fig. 5; the width dimension L2 of the outlet 32 is the distance between the outer edge of the inner hub 11 and the inner edge of the outer hub 12 in the radial direction of the hub body 10 (or in the direction perpendicular to the outlet direction) in fig. 5.

As shown in fig. 1 to 5, an embodiment of the present invention provides a wind wheel assembly. The wind wheel assembly includes a hub body 10, a flow passage 30 and a plurality of blades 40. Wherein, the flow passage 30 is arranged on the hub body 10; the plurality of blades 40 are arranged along the circumferential direction of the hub body 10, and the blades 40 are arranged in the overflowing channel 30; along the flowing direction of the fluid, one end of the flow passage 30 is an air inlet 31, the other end of the flow passage 30 is an air outlet 32, the width dimension of the air inlet 31 is L1, the width dimension of the air outlet 32 is L2, wherein L1/L2 is not less than 1.875.

In the above arrangement, by optimizing the ratio of the width dimensions of the air inlet 31 and the air outlet 32, the air flow enters the flow passage 30 from the air inlet 31 with a larger width dimension, so that the air inlet volume can be increased, and the air flow in the flow passage 30 works through the blades 40 to form a high-speed and high-pressure air flow which flows out from the air outlet 32 with a smaller dimension, so that the air outlet volume of the wind wheel can be increased.

Preferably, in the embodiment of the invention, the ratio of L1/L2 is 1.38. Thus, a larger air output can be ensured.

As shown in fig. 5, in the embodiment of the present invention, the width dimension L1 of the air inlet 31 and the width dimension L2 of the air outlet 32 satisfy the following formula: l1 is more than or equal to 20mm and less than or equal to 30mm, and L2 is more than or equal to 16mm and less than or equal to 20 mm.

In the above arrangement, determining the width L1 of the air inlet 31 and the width L2 of the air outlet 32 within the above ranges can more effectively increase the air output of the wind wheel, and can ensure a small size of the wind wheel assembly.

Preferably, in the embodiment of the present invention, the width dimension L1 of the air inlet 31 is 23.5mm, and the width dimension L2 of the air outlet 32 is 17 mm.

As shown in fig. 6 and 7, in the embodiment of the present invention, from the air inlet 31 to the air outlet 32, the blade 40 includes a first blade section 41, a second blade section 42 and a third blade section 43 which are connected in sequence, a thickness of the first blade section 41 is H1, a thickness of the second blade section 42 is H2, and a thickness of the third blade section 43 is H3, where H1 is not less than H2, and H3 is not less than H2.

In the above arrangement, the thickness dimensions of the first blade section 41 and the second blade section 42 of the blade 40 are smaller than the thickness dimension of the second blade section 42, so that the flow velocities of the air flow passing through the first blade section 41, the second blade section 42 and the third blade section 43 are different, and thus, a time difference is generated at a convergence position of the air flow, so that the energy of the vortex is reduced, a large vortex is prevented from being formed, and further, the aerodynamic noise generated by the blade is reduced. That is, with the above arrangement, noise can be reduced, thereby ensuring the advantage of low noise of the wind wheel assembly of the present invention.

In the embodiment of the present invention, as shown in fig. 6, the thickness dimension H1 of the first blade segment 41 refers to the dimension of the first blade segment 41 in the circumferential direction, H3 refers to the dimension of the third blade segment 43 in the circumferential direction, and the second blade segment 42 is located in the middle of the blade 40 and has the thickness of the thickest part of the blade 40.

As shown in FIG. 7, in an embodiment of the present invention, the first blade segment 41 and the third blade segment 43 each have a decreasing thickness in a direction away from the second blade segment 42.

Through the arrangement, the surface of the blade can be smoother, and the second blade segment 42 can be effectively connected with the first blade segment 41 and the third blade segment 43 excessively, so that the blade 40 has better flow guiding capacity, the energy loss of airflow in the process of flowing through the blade can be reduced, and the air output of the wind wheel is further improved.

As shown in FIG. 6, in an embodiment of the present invention, the thickness dimension H1 of the first blade segment 41, the thickness dimension H2 of the second blade segment 42, and the thickness dimension H3 of the third blade segment 43 satisfy the following formulas: h1 is more than 0.5mm and less than 1.5mm, H2 is more than or equal to 1mm and less than or equal to 1.5mm, and H3 is more than 0mm and less than 0.5 mm.

In the above technical solution, the thickness of the first blade section 41 and the third blade section 43 of the blade 40 is smaller than the thickness of the second blade section 42, so that it can be ensured that the airflow flows from the air inlet 31 through the end of the first blade section 41 and the vortex formed at the tail of the blade 40 (i.e. the end of the third blade section 43) is smaller, thereby reducing the aerodynamic noise generated by the blade 40.

Preferably, in the embodiment of the present invention, the thickness dimension H1 of the first blade section 41 is 1mm, the thickness dimension H2 of the second blade section 42 is 1.1mm, and the thickness dimension H3 of the third blade section 43 is 0.1 mm. Through the arrangement, after the airflow enters the flow passage through the air inlet, the airflow is guided by the first blade section 41, the second blade section 42 and the third blade section 43 in sequence, and finally, the vortex formed at the tail part of the third blade section 43 is small, so that the pneumatic noise generated by the wind wheel assembly is small.

The inventors have tested the air output of the wind wheel assembly of the above embodiment (wherein the number of the blades is 8, L1 is 23.5mm, and L2 is 17mm), and the simulation results are shown in table 1.

TABLE 1

	12 th gear	11 grade	10 shift
				Air volume (m)³/h)	112.7	105.6	98.6
Noise (dB)	50.9	49.6	47.8

Table 2 below is a test result of the air output of the prior art wind wheel assembly:

TABLE 2

	12 th gear	11 grade	10 shift
				Air volume (m)³/h)	142.7	129.3	116.1
Noise (dB)	50.8	49.2	48.1

Comparing the air volume data in table 1 and table 2, it can be seen that by optimizing the ratio of the width dimensions of the air inlet 31 and the air outlet 32, the air volume of the air wheel assembly is obviously increased, and a better noise reduction effect is achieved; therefore, the air wheel assembly provided by the embodiment of the invention has the advantages of large air volume and low noise.

As shown in fig. 8, in the embodiment of the present invention, the blade 40 has a windward side and a leeward side which are oppositely arranged, the end of the third blade section 43 away from the second blade section 42 is provided with a spoiler 44, and the spoiler 44 has a curved surface 45 which is convex towards the leeward side.

In the above arrangement, the vortex is formed at the position where the spoiler 44 is provided to the blade 40, so that the alternating vortex on the windward side and the leeward side can be effectively reduced, thereby reducing the aerodynamic vortex noise.

As shown in FIG. 8, in the embodiment of the present invention, the spoiler 44 further has a windward surface 46 opposite to the curved surface 45, and the distance between the curved surface 45 and the windward surface 46 is C, wherein C is greater than or equal to 2mm and less than or equal to 3 mm.

In the above arrangement, the distance between the curved surface 45 and the windward surface 46 is set between 2mm and 3mm, so that a vortex can be formed between the curved surface 45 and the windward surface 46, the collection position of the airflow plays a role of turbulence, interaction vortex of the windward side and the leeward side can be effectively reduced, and aerodynamic vortex noise is reduced.

Preferably, in the embodiment of the present invention, the value of C is 2.1 mm.

Preferably, in the embodiment of the present invention, the windward side 46 may be a plane or a concave curved surface.

In the embodiment of the present invention, as shown in fig. 8, a connecting line between two end points of the spoiler 44 facing the end of the air outlet 32 is N, a point where a curve of the end of the spoiler 44 facing the leeward side of the air outlet 32 has a maximum curvature radius is M, and a distance C between the curved surface 45 and the windward side 46 is a distance between a tangent at the point M and the connecting line N.

As shown in fig. 1, in the embodiment of the present invention, the hub body 10 includes an inner hub 11 and an outer hub 12 which are arranged at intervals, the flow passage 30 is formed between an outer wall surface of the inner hub 11 and an inner wall surface of the outer hub 12, and the plurality of blades 40 are arranged at even intervals in a circumferential direction of the inner hub 11.

In the above arrangement, the plurality of blades 40 are arranged in the overflowing channel 30 at equal intervals, so that the shunting uniformity of each blade 40 can be ensured, the stability and consistency of each blade 40 under the fluid pressure are ensured, and the service life of the guide vane is effectively ensured.

Specifically, as shown in fig. 5, in the embodiment of the present invention, the inner hub 11 is formed of a first horn structure which is hollow as a whole and whose outer diameter is gradually increased from top to bottom. The outer hub 12 is formed by a hollow second horn structure with gradually increasing outer diameter from top to bottom, the outer hub is sleeved on the periphery of the inner hub, an annular overflowing channel is formed between the outer hub and the inner hub, an air inlet is formed between the upper end of the outer hub and the upper end of the inner hub (see fig. 5 in particular), and an air outlet is formed between the lower end of the outer hub and the lower end of the inner hub.

Specifically, in the embodiment of the present invention, one side of the blade 40 is connected to the inner hub 11, the other side of the blade 40 is connected to the outer hub 12, and the plurality of blades 40 divide the transfer passage 30 into a plurality of air paths.

Preferably, in an embodiment of the present invention, the number of blades 40 is X, and the following formula is satisfied: x is more than or equal to 6 and less than or equal to 12.

Preferably, in the embodiment of the present invention, the number X of the blades 40 is 8.

According to another aspect of the invention, embodiments of the invention also provide a fan assembly. The fan assembly comprises a driving motor and the fan wheel assembly connected with an output shaft of the driving motor. This fan subassembly has the whole advantages of foretell fan subassembly, and the no longer repeated description here.

According to another aspect of the present invention, an embodiment of the present invention also provides a fan. The fan comprises a base and the fan assembly arranged in the base. This fan has the advantage of high amount of wind and low noise to have foretell fan assembly's whole advantages, no longer give unnecessary details here.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: by optimizing the width size ratio of the air inlet and the air outlet, airflow enters the flow passage from the air inlet with larger width, so that the air inlet volume can be increased, the airflow in the flow passage works through the blades, high-speed and high-pressure airflow is formed, and the airflow flows out from the air outlet, and thus, the air outlet volume of the wind wheel can be increased. Further, by optimizing the structure of the blade, the formation of high-energy and large eddy is avoided, so that the aerodynamic noise generated by the blade can be reduced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind wheel assembly, comprising:

a hub body (10);

the flow passage (30) is arranged on the hub body (10);

the blades (40) are arranged along the circumferential direction of the hub body (10), and the blades (40) are arranged in the overflowing channel (30); along the flowing direction of the fluid, one end of the overflowing channel (30) is an air inlet (31), the other end of the overflowing channel (30) is an air outlet (32), the width of the air inlet (31) is L1, the width of the air outlet (32) is L2, and L1/L2 is not less than 1.875.

2. The air duct assembly according to claim 1, characterized in that the width dimension L1 of the air inlet opening (31) and the width dimension L2 of the air outlet opening (32) satisfy the following formula: l1 is more than or equal to 20mm and less than or equal to 30mm, and L2 is more than or equal to 16mm and less than or equal to 20 mm.

3. The air wheel assembly according to claim 1, wherein the blade (40) comprises a first blade section (41), a second blade section (42) and a third blade section (43) which are connected in sequence from the air inlet (31) to the air outlet (32), the thickness of the first blade section (41) is H1, the thickness of the second blade section (42) is H2, and the thickness of the third blade section (43) is H3, wherein H1 is equal to or less than H2, and H3 is equal to or less than H2.

4. A wind wheel assembly according to claim 3, wherein the thickness of each of said first blade segment (41) and said third blade segment (43) is gradually decreasing in a direction away from said second blade segment (42).

5. A wind wheel assembly according to claim 3, wherein the thickness dimension H1 of the first blade segment (41), the thickness dimension H2 of the second blade segment (42) and the thickness dimension H3 of the third blade segment (43) satisfy the following formula: h1 is more than 0.5mm and less than 1.5mm, H2 is more than or equal to 1mm and less than or equal to 1.5mm, and H3 is more than 0mm and less than 0.5 mm.

6. A wind wheel assembly according to any of claims 3-5, wherein said blades (40) have oppositely arranged windward and leeward sides, and wherein an end of said third blade section (43) remote from said second blade section (42) is provided with a spoiler (44), said spoiler (44) having a curved surface (45) convex towards said leeward side.

7. The wind wheel assembly according to claim 6, characterized in that said spoiler (44) further has a windward surface (46) opposite to said curved surface (45), said curved surface (45) being at a distance C from said windward surface (46), wherein 2mm C3 mm.

8. The wind wheel assembly according to any one of claims 1 to 5, characterized in that the hub body (10) comprises an inner hub (11) and an outer hub (12) arranged at intervals, the flow passage (30) is formed between an outer wall surface of the inner hub (11) and an inner wall surface of the outer hub (12), and a plurality of the blades (40) are arranged at even intervals along a circumferential direction of the inner hub (11).

9. A fan assembly comprising a drive motor and the fan assembly of any of claims 1 to 8 connected to an output shaft of the drive motor.

10. A fan comprising a base and the fan assembly of claim 9 disposed within the base.