High-speed mute fan blade group

Abstract

The utility model discloses a high-speed silent fan blade group which comprises a fan blade base, a plurality of wind driving blades are evenly arranged on the circumferential wall face of the fan blade base, the wind driving blades are curved-surface blades bent towards one side of an air supply end, the wind driving blades are formed by a first blade edge, a second blade edge, a third blade edge and a fourth blade edge in a surrounding mode in the circumferential direction, and the first blade edge, the second blade edge, the third blade edge and the fourth blade edge are arranged on the fan blade base. The first blade edge and the second blade edge are oppositely arranged, the third blade edge and the fourth blade edge are oppositely arranged, the fourth blade edge is connected with the circumferential outer wall face of the fan blade base, the first blade edge is arranged towards the windward end side, and the second blade edge is arranged towards the air supply end side. By means of the fan blade set, the blowing speed of the fan can be effectively increased under the same condition, the structure of the wind driving blades is stable, the phenomenon of high-frequency shaking of the wind driving blades in the working process can be effectively relieved, the mute and noise reduction effects are achieved, and the service life of the fan blade set is prolonged. And the use experience of the user is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field, concretely is a high -speed silent fan blade group. BACKGROUND

[0002] Fan blade group is indispensable working part in electric fan, and the fan blade group designed according to different wind force principles is obviously different in wind driving effect, therefore, selecting appropriate fan blade group for electric fan with different blowing effect will play a multiplier effect on realizing its function.

[0003] The popular fan in the market at present has high-speed fan, also called high-pressure fan, which realizes the effect of long-distance air supply with strong wind force, can satisfy some specific blowing needs and application of consumers, and therefore is loved by a large part of consumers.

[0004] However, the realization of the function of this kind of high-speed fan is nothing but through increasing the rotating speed of fan motor, adding pressure increasing mechanism and the like to assist pressure increasing, therefore, the realization indirectly increases the complexity of fan structure and the manufacturing cost of fan, and under the intervention of various auxiliary mechanisms, the working noise of the high-speed fan on the market at present is very large, although it can let consumers experience high-pressure, high-speed blowing effect, but the noise interference therein is unbearable. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a high-speed silent fan blade group, application this fan blade group can effectively improve the blowing speed of fan under the same condition, and the driving wind blade structure is stable, can effectively slow down the high-frequency shaking phenomenon of driving wind blade during working, plays the effect of silent noise reduction, effectively improves the use experience of user, solves the problem proposed in the above background technology.

[0006] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a high-speed silent fan blade group, including fan blade base, the fan blade base circumferential wall surface is evenly arranged with multiple driving wind blades, the fan blade base opposite two ends are set as windward end and air outlet end respectively, when the fan blade base rotates, drives the driving wind blade air acceleration located on the windward end side to flow to the air outlet end side, the driving wind blade is the curved surface blade curved to the air outlet end side, the driving wind blade circumferential is formed by the first leaf edge, second leaf edge, third leaf edge and fourth leaf edge, the first leaf edge is opposite to the second leaf edge, the third leaf edge and the fourth leaf edge are opposite, the fourth leaf edge is connected with the fan blade base circumferential outer wall surface, the first leaf edge is inclined to the windward end side and is arranged, the second leaf edge is inclined to the air outlet end side and is arranged, the third leaf edge extends to the air outlet end side and forms the lower wind edge.

[0007] Preferably, the lower wind wrapping edge and the wind driving blade connection forms an inner circle chamfer, and the curved surface of the inner circle chamfer is connected with the surface of the wind driving blade smoothly.

[0008] Preferably, the third leaf edge extends towards the windward end to form an upper wind wrapping edge, and the upper wind wrapping edge and the wind driving blade connection forms an inner circle chamfer, and the curved surface of the inner circle chamfer is connected with the surface of the wind driving blade smoothly.

[0009] Preferably, the first leaf edge has a first curvature, and the second leaf edge has a second curvature, and the first curvature is greater than the second curvature.

[0010] Preferably, the thickness of the wind driving blade increases first and then decreases from the first leaf edge to the second leaf edge, and the thickness of the first leaf edge is smaller than the thickness of the second leaf edge.

[0011] Preferably, the inner side of the fan base is a hollow cavity, and the hollow cavity is provided with a rotating shaft, and the rotating shaft is arranged at the axis of the fan base and is integrally connected with the fan base.

[0012] Compared with the prior art, the fan leaf group has the following beneficial effects:

[0013] The fan leaf group can effectively improve the blowing speed of the fan under the same conditions, and the wind driving blade structure is stable, can effectively slow down the high-frequency shaking of the wind driving blade during work, has the effect of quiet and noise reduction, and effectively improves the use experience of users. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The structure of the utility model is shown Figure One ;

[0015] Figure 2 The structure of the utility model is shown Figure Two ;

[0016] Figure 3 The structure of the utility model is shown Figure Three ;

[0017] Figure 4 The structure of the utility model is shown Figure Four ;

[0018] Figure 5 The A-A section of the utility model is shown in the schematic view.

[0019] Figure 6 The A-A section of the utility model is shown in the schematic view.

[0020] In the figure: 1 fan base; 2 driving wind blade; 21 first leaf edge; 211 first curvature; 22 second leaf edge; 221 second curvature; 23 third leaf edge; 24 fourth leaf edge; 3 rotating shaft. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] Please refer to Figures 1-6 A high-speed mute fan blade group, comprising a fan base 1, a plurality of driving wind blades 2 are uniformly arranged on the circumferential wall surface of the fan base 1, and the two ends of the fan base 1 are respectively set as a windward end and a wind delivery end; when the fan base 1 rotates, the driving wind blades 2 drive the air located on the windward end side to accelerate and flow to the wind delivery end side; the driving wind blades 2 are curved surface blades curved towards the wind delivery end side; the circumferential of the driving wind blades 2 is enclosed by a first leaf edge 21, a second leaf edge 22, a third leaf edge 23 and a fourth leaf edge 24; the first leaf edge 21 and the second leaf edge 22 are oppositely arranged; the third leaf edge 23 and the fourth leaf edge 24 are oppositely arranged; the fourth leaf edge 24 is connected with the circumferential outer wall surface of the fan base 1; the first leaf edge 21 is arranged to deviate from the windward end side; the second leaf edge 22 is arranged to deviate from the wind delivery end side; the third leaf edge 23 extends towards the windward end side to form a lower wind wrapping edge 232; the lower wind wrapping edge 232 and the connecting part of the driving wind blade 2 form an inner circular chamfer; the curved surface with the shape of the inner circular chamfer is smoothly connected with the surface of the driving wind blade 2; the third leaf edge 23 extends towards the windward end side to form an upper wind wrapping edge 231; the upper wind wrapping edge 231 and the connecting part of the driving wind blade 2 form an inner circular chamfer; the curved surface with the shape of the inner circular chamfer is smoothly connected with the surface of the driving wind blade 2; a relatively concentrated air passing channel is formed between two driving wind blades 2, the upper wind wrapping edge 231 and the lower wind wrapping edge 232; the high-speed air flow passing through the air passing channel is wrapped as much as possible due to the convergence of the upper wind wrapping edge 231 and the lower wind wrapping edge 232 on both sides of the air passing channel; finally, the air flow is blown out from the wind delivery end; in this way, the use rate and wind pressure of the high-speed air flow can be retained more greatly, the air flow speed blown out from the wind delivery end is faster, the air flow volume is larger, and the air flow beam is relatively concentrated, which can effectively reduce the noise of the air flow, unlike the traditional fan blade group without the upper wind wrapping edge 231 and the lower wind wrapping edge 232, the air flow will be seriously side-leaked when passing through the traditional air passing channel, which not only wastes the flow of the air flow, but also is not conducive to the speed-up of the air flow.

[0023] The first leaf edge 21 has a first curvature 211, and the second leaf edge 22 has a second curvature 221, the first curvature 211 is greater than the second curvature 221, the wind flow enters the wind end at the first leaf edge 21, and the wind flow exits the wind end at the second leaf edge 22, when the curvatures of the two ends change from large to small, the wind flow beam can be released, thereby playing a role in noise reduction.

[0024] The thickness of the wind blade 2 increases first and then decreases from the first leaf edge 21 to the second leaf edge 22, the thickness of the first leaf edge 21 is less than the thickness of the second leaf edge 22, the wind blade 2 with such a structure can make the first leaf edge 21 as thin as possible, thereby reducing the wind resistance of the first leaf edge 21 when the wind enters and cuts the wind as much as possible, and the middle region of the blade is relatively thick, which can play a role in stabilizing the structural strength of the blade, and the structural features of the upper wind wrapping edge 231 and the lower wind wrapping edge 232 on the third leaf edge 23 can also play a role in strengthening the structural strength of the blade, and the two cooperate to strengthen the structural strength of the wind blade 2 in two directions intersecting the curved surface where the wind blade 2 is located, so that the wind blade 2 is more stable when working, can effectively slow down the high-frequency shaking of the wind blade 2 when working, and has the effect of quietness and noise reduction.

[0025] The inside of the fan leaf base 1 is a hollow cavity, a rotating shaft 3 is arranged in the hollow cavity, the rotating shaft 3 is arranged at the axis of the fan leaf base 1 and is integrally connected with the fan leaf base 1, and when the fan leaf group is installed on the brushless motor, the rotating shaft 3 is rotationally connected with the brushless motor.

[0026] In summary: under the same conditions, the application of the fan leaf group can effectively improve the blowing speed of the fan, the structure of the wind blade 2 is stable, can effectively slow down the high-frequency shaking of the wind blade 2 when working, has the effect of quietness and noise reduction, and effectively improves the user experience.

[0027] It should be noted that in this text, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0028] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-speed silent fan blade group, comprising a fan base (1), a plurality of wind blades (2) are uniformly arranged on the circumferential wall surface of the fan base (1), and the two ends of the fan base (1) are respectively provided as a windward end and a blow end, when the fan base (1) rotates, the wind blades (2) drive the air on the windward end side to accelerate to the blow end side, characterized in that: The wind driving blade (2) is a curved blade bending towards the air outlet end, and the wind driving blade (2) is surrounded by a first blade edge (21), a second blade edge (22), a third blade edge (23) and a fourth blade edge (24) in the circumferential direction, the first blade edge (21) is arranged opposite to the second blade edge (22), the third blade edge (23) and the fourth blade edge (24) are arranged opposite to each other, the fourth blade edge (24) is connected with the circumferential outer wall surface of the fan base (1), the first blade edge (21) is arranged to be inclined to the air inlet end, the second blade edge (22) is arranged to be inclined to the air outlet end, and the third blade edge (23) extends towards the air outlet end to form a lower wind wrapping edge (232).

2. A high speed silent fan blade set according to claim 1, wherein: The lower wind wrapping edge (232) is connected with the wind driving blade (2) to form an inner circular chamfer, and the curved surface with the shape of the inner circular chamfer is smoothly connected with the surface of the wind driving blade (2).

3. The high speed silent fan blade set according to claim 1, wherein: The third blade edge (23) extends towards the air inlet end to form an upper wind wrapping edge (231), the upper wind wrapping edge (231) is connected with the wind driving blade (2) to form an inner circular chamfer, and the curved surface with the shape of the inner circular chamfer is smoothly connected with the surface of the wind driving blade (2).

4. The high speed silent fan blade set of claim 1, wherein: The first blade edge (21) has a first curvature (211), the second blade edge (22) has a second curvature (221), and the first curvature (211) is greater than the second curvature (221).

5. The high speed silent fan blade set of claim 1, wherein: The thickness of the wind driving blade (2) increases first and then decreases from the first blade edge (21) to the second blade edge (22), and the thickness of the first blade edge (21) is less than the thickness of the second blade edge (22).

6. A high speed silent fan blade set as claimed in claim 1 wherein: The inner side of the fan base (1) is a hollow cavity, a rotating shaft (3) is arranged in the hollow cavity, the rotating shaft (3) is arranged at the axis of the fan base (1) and is integrally connected with the fan base (1).

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