CN218882590U

CN218882590U - Mute fan blade

Info

Publication number: CN218882590U
Application number: CN202223401521.7U
Authority: CN
Inventors: 方春亮; 吴培羽; 许星跃
Original assignee: Zhongshan Lianxing Electric Appliance Manufacturing Co ltd
Current assignee: Zhongshan Lianxing Electric Appliance Manufacturing Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-04-18
Anticipated expiration: 2032-12-19

Abstract

The utility model discloses a silence flabellum, include wheel hub, be no less than three circumference interval connection and be in the blade in the wheel hub outside. The blade including be used for with the connection limit that wheel hub connects, by the both ends on connection limit are to keeping away from inboard side and outside limit that wheel hub's direction was drawn forth, the outside limit is good at inboard side, the outside limit to a plurality of water conservancy diversion breachs of the sunken formation in the blade, work as when the flabellum rotates, be located the air velocity on outside limit is greater than the air velocity of inboard side for it is located the water conservancy diversion breach pressure on outside limit is less than the pressure of inboard side, the air of inboard side can be followed the water conservancy diversion breach flows. Compare with traditional flabellum, the utility model discloses a blade is equipped with the water conservancy diversion breach for air between inboard side of entering and the outside limit blows off from the water conservancy diversion breach in an orderly manner, thereby reduces the air resistance that the blade received, improves the air-out efficiency of flabellum.

Description

Mute fan blade

Technical Field

The utility model relates to a fan equipment technical field, in particular to silence flabellum.

Background

The source of the working noise of the fan is mainly divided into two types, one is fluid noise caused by the rotation of fan blades, and the other is electromagnetic noise caused by the operation of a motor. The shape and number of the fan blades determine the noise generated by the rotation of the fan blades. The air output of the fan is related to the motor rotation power and the windward area of the fan blades, and the larger the rotation power of the motor is, the larger the windward area of the fan blades is, the larger the air output is. Based on the principle, the utility model discloses do further improvement to the flabellum.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a silence flabellum through set up a plurality of water conservancy diversion breachs on the flabellum, improves the air-out efficiency of flabellum, and reduces the resistance of flabellum to the air to reach the effect of silence.

The utility model provides a silence flabellum, include wheel hub, be no less than three circumference interval connection and be in the blade in the wheel hub outside. The blade including be used for with the connection limit that wheel hub is connected, by the both ends on connection limit are to keeping away from inboard side and outside limit that wheel hub's direction was drawn forth, the outside limit is good at inboard side, the outside limit to the interior sunken a plurality of water conservancy diversion breachs that form of blade, work as when the flabellum rotates, be located the air velocity on outside limit is greater than the air velocity of inboard side for it is located the water conservancy diversion breach pressure on outside limit is less than the pressure of inboard side, the air of inboard side can be followed the water conservancy diversion breach flows.

Preferably, the number of said blades ranges from 5 to 7.

Preferably, a plurality of the flow guiding notches form the wave-shaped outer side edge; the inside edge is arc.

Preferably, the blades are obliquely arranged on the outer side of the hub, the connecting edge is oblique relative to the central axis of the hub, the inner side edge is close to the air inlet of the fan blade, and the outer side edge is closer to the air outlet of the fan blade.

Preferably, the blade is of a cambered surface structure.

The working principle of the fan blades is as follows: the fan blades rotate, air is sucked from the air inlet positions of the fan blades, the outer side edges are longer than the inner side edges, the speed of the air flowing through the outer side edges is higher than the speed of the air flowing through the inner side edges, so that the pressure of the outer side edges is lower than that of the inner side edges, and the pressure of the outer side edges, which is not provided with the flow guide notches, is higher than that of the flow guide notches, so that the air entering the space between the inner side edges and the outer side edges tends to be blown out of the flow guide notches.

The utility model has the advantages that:

1. compare with traditional flabellum, the utility model discloses a blade is equipped with the water conservancy diversion breach for air between inboard side of entering and the outside limit blows off from the water conservancy diversion breach in an orderly manner, thereby reduces the air resistance that the blade received, improves the air-out efficiency of flabellum.

2. The plurality of flow guide notches form a wavy outer side edge, so that the fan blade is unique in shape and has identification performance.

3. Under the condition of ensuring the same air output, the windward area of the fan blades is increased by increasing the number of the blades, and the rotating power of the motor is reduced, so that the fan is muted.

Drawings

Fig. 1 is an overall schematic view of a mute fan blade according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a blade according to an embodiment of the present invention.

The purpose of the present invention is to provide a portable electronic device, which can be easily and conveniently operated.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, terms such as "mounted," "connected," and "fixed" are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected through the interior of two elements or through the interaction of two elements unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or indirectly contacting the first feature and the second feature through intervening media, and the first feature "on", "above" or "above" the second feature may be directly or obliquely above the second feature or may merely indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-2, an embodiment of the mute fan blade of the present invention is shown:

a mute fan blade comprises a hub 2 and six blades 1 which are circumferentially connected to the outer side of the hub 2 at intervals. Blade 1 is including being used for the inboard side 12 and the outside 13 that are drawn forth to the direction of keeping away from hub 2 by the both ends of connecting the limit 11, and outside 13 is longer than inboard side 12, and outside 13 is sunken to form a plurality of water conservancy diversion breachs 131 in blade 1.

As shown in fig. 1, when the fan blade rotates, air is sucked from the inlet of the fan blade, because the outer side 13 is longer than the inner side 12, the speed of the air flowing through the outer side 13 is greater than the speed of the air flowing through the inner side 12, so that the pressure of the outer side 13 is less than the pressure of the inner side 12, and the same can be obtained by the above principle, the pressure of the outer side 13 without the diversion notch 131 is greater than the pressure of the diversion notch 131, so that the air entering between the inner side 12 and the outer side 13 is more prone to be blown out from the diversion notch 131, thereby reducing the air resistance received by the blade 1 and improving the air outlet efficiency of the fan blade.

Specifically, the plurality of flow guide notches 131 form the wavy outer side edge 13, so that the fan blade is unique in shape and has identifiability; the inner side edge 12 is arcuate.

Compare in the 1 horizontal setting of blade, the slope of blade 1 sets up in the outside of wheel hub 2 for the air resistance that blade 1 receives is littleer, and connects limit 11 for the 2 center pin slopes of wheel hub, and inboard edge 12 is close to the air inlet department of flabellum, and outside limit 13 is more close to the air-out department of flabellum, and the blade 1 that the slope set up can the more efficient cut wind, makes the air-out even and soft.

Specifically, the blades 1 are of arc-surface structures, and the contact area between the blades 1 and air is increased, so that the air quantity is increased, the flow field is optimized, and the generation of fan blade noise is inhibited.

In other embodiments, the fan blades can be five or seven blades, and the larger the number of the blades 1 is, the larger the windward area of the fan blades is; and the power of the motor of the fan is reduced, so that the energy consumption of the fan is reduced, and the fan is muted.

In the description of the present specification, reference to descriptions pertaining to "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in suitable combinations and subcombinations of the various embodiments or examples and features of the various embodiments or examples described herein may be combined and combined by one skilled in the art without conflict with one another.

The above only is the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and all the equivalent structures that are used in the content of the specification and the attached drawings of the present invention can be changed or directly or indirectly used in other related technical fields, and all the same principles are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a silence flabellum, includes wheel hub, is no less than three circumference interval connection and is in the blade in the wheel hub outside, its characterized in that, the blade including be used for with wheel hub connects the limit, by connect the both ends on limit to keeping away from inboard side and outside limit that wheel hub's direction was drawn forth, the outside limit is good at inboard side, the outside limit to a plurality of water conservancy diversion breachs of the sunken formation in the blade, work as when the flabellum rotates, be located the air velocity on outside limit is greater than the air velocity on inboard side makes and is located the water conservancy diversion breach pressure on outside limit is less than the pressure on inboard side, the air of inboard side can be followed the water conservancy diversion breach flows.

2. The mute fan blade according to claim 1, wherein the number of the blades is in the range of 5 to 7.

3. The fan blade of claim 1, wherein the plurality of flow-guiding notches form the wavy outer side edge; the inside edge is arc.

4. The mute fan blade according to claim 1, wherein the blade is obliquely disposed at an outer side of the hub, the connecting edge is oblique relative to a central axis of the hub, and the inner side edge is close to an air inlet of the fan blade, and the outer side edge is closer to an air outlet of the fan blade.

5. The fan blade of claim 1, 2 or 4, wherein the blade is of a cambered surface structure.