CN218717694U

CN218717694U - Centrifugal wind wheel and centrifugal fan

Info

Publication number: CN218717694U
Application number: CN202222791141.2U
Authority: CN
Inventors: 叶涛; 韦宏茂; 覃万翔; 梁炜亮
Original assignee: Guangdong Sunwill Precising Plastic Co Ltd
Current assignee: Guangdong Sunwill Precising Plastic Co Ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-03-24
Anticipated expiration: 2032-10-21

Abstract

The utility model discloses a centrifugal wind wheel and centrifugal fan, centrifugal wind wheel includes: a wheel disc; the frame is positioned above the wheel disc and comprises a plurality of strip structures which are sequentially connected end to end so that the frame is in a polygonal annular shape; the lower ends of the blades are fixedly connected with the wheel disc, each long strip structure is connected with the upper ends of a plurality of blades, and the blades connected to the same long strip structure are sequentially arranged along the extending direction of the long strip structure, so that the blades are circumferentially distributed in a polygonal shape around the axis of the wheel disc; the blade is arranged along the extending direction of the long strip structures, and the long strip structures are sequentially connected end to form a ring shape in a polygonal shape, so that the blade is in the ring shape in the polygonal shape around the wheel disc bearing, the air outlet air flow of the blade grid flow channel of the blade is inconsistent, the sound wave frequency is different, the sound wave interference is weakened, and the noise is reduced.

Description

Centrifugal wind wheel and centrifugal fan

Technical Field

The utility model relates to a centrifugal wind wheel technical field especially relates to a centrifugal wind wheel and centrifugal fan.

Background

At present, the blades of the conventional centrifugal fan are uniformly distributed in the circumferential direction, the air outlet flow of a blade grid flow passage is uniform, and the sound wave frequency is the same, so that sound wave interference can be generated, and the noise is enhanced.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model provides a centrifugal wind wheel and centrifugal fan.

In a first aspect, an embodiment of the present invention provides a centrifugal wind wheel, the centrifugal wind wheel includes:

a wheel disc;

the frame is positioned above the wheel disc and comprises a plurality of strip structures, and the strip structures are sequentially connected end to end so that the frame is in a polygonal ring shape;

the lower ends of the blades are fixedly connected with the wheel disc, each long strip structure is connected with the upper ends of the blades, and the blades connected to the same long strip structure are sequentially arranged along the extending direction of the long strip structure, so that the blades are circumferentially distributed in a polygonal shape around the axis of the wheel disc.

According to the utility model discloses centrifugal wind wheel has following technological effect at least: the blade is arranged along the extending direction of the long strip structures, and the long strip structures are sequentially connected end to form a ring shape in a polygonal shape, so that the blade is in the ring shape in the polygonal shape around the wheel disc bearing, the air outlet air flow of the blade grid flow channel of the blade is inconsistent, the sound wave frequency is different, the sound wave interference is weakened, and the noise is reduced.

According to some embodiments of the invention, the elongated structure is curved to a side away from the wheel disc axis.

According to some embodiments of the present invention, the number of the strip structures is k, and k is an odd number.

According to some embodiments of the invention, the k satisfies: k =7, or k =9.

According to some embodiments of the utility model, the middle part of rim plate is equipped with axle sleeve portion, axle sleeve portion is equipped with the connecting hole.

According to some embodiments of the utility model, centrifugal wind wheel still includes a plurality of strengthening ribs, the strengthening rib winds bushing portion axis circumference distributes, the strengthening rib respectively with the periphery wall of bushing portion with the last fixed surface of rim plate connects.

According to some embodiments of the utility model, the rim plate is discoid, or, the outer fringe shape of rim plate with the outer fringe shape of frame suits.

In a second aspect, the embodiment of the present invention further provides a centrifugal fan, including the centrifugal wind wheel according to the embodiment of the first aspect of the present invention.

According to the utility model discloses centrifugal fan has following technological effect at least: centrifugal fan adopts this centrifugal wind wheel, and the extending direction of blade edge rectangular structure arranges, and a plurality of rectangular structures end to end connection are in proper order in order to form the cyclic annular of multilateral shape to make the blade be the cyclic annular of multilateral shape around the rim plate bearing, make the air-out air current inconsistent of the cascade runner of blade, the sound wave frequency is different, thereby weakens the sound wave and interferes, the noise reduction.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a centrifugal wind wheel according to some embodiments of the present invention;

figure 2 is a top view of a centrifugal wind wheel according to some embodiments of the present invention.

Reference numerals:

wheel disc 100, frame 110, elongated structure 111, blades 120, boss portion 130, connecting holes 131, and reinforcing ribs 140.

Detailed Description

Reference will now be made in detail to the 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 functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality is two or more, and the terms greater than, less than, exceeding, etc. are understood as excluding the number, and the terms greater than, less than, and the like are understood as including the number.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The embodiments of the present invention will be further explained with reference to the drawings.

According to some embodiments of the present invention, referring to fig. 1 and 2, a centrifugal wind wheel includes a wheel disc 100, a rim 110, and blades 120; the frame 110 is positioned above the wheel disc 100, the frame 110 and the wheel disc 100 are coaxially arranged, the frame 110 comprises a plurality of strip structures 111, and the strip structures 111 are sequentially connected end to form a ring shape, so that the frame 110 is in a polygonal ring shape; the blades 120 extend in the vertical direction, the lower ends of the blades 120 are fixedly connected to the disk 100, each long strip structure 111 is connected to the upper ends of the blades 120, and the blades 120 connected to the same long strip structure 111 are sequentially arranged in the extending direction of the long strip structure 111, so that the blades 120 are circumferentially distributed in a polygonal shape around the axis of the disk 100.

It can be understood that, referring to fig. 2, the blades 120 are arranged along the extending direction of the strip structures 111, the strip structures 111 are sequentially connected end to form a polygonal ring, so that the blades 120 are in a polygonal ring shape around the bearing of the wheel disc 100, the blades 120 connected to the same strip structure 111 form a group, the outlet air flows of the cascade channels of the blades 120 in different groups are not consistent, and the sound wave frequencies are different, thereby weakening the sound wave interference and reducing the noise of the centrifugal wind wheel during high-speed rotation.

Preferably, the elongated structures 111 are bent to a side away from the axis of the wheel disc 100, that is, the elongated structures 111 are bent radially outward, so that the outer edge of the frame 110 formed by sequentially connecting the plurality of elongated structures 111 end to end is approximately circular, and thus the plurality of blades 120 still have good rotational stability under the conditions that the outlet airflow is not uniform and the sound wave frequencies are different.

According to some embodiments of the present invention, referring to fig. 1 and 2, the number of the strip structures 111 is k, and k is an odd number, thereby avoiding the situation of sound wave interference that may occur when k is an even number. Preferably, k =7, or, k =9. Under the condition that the maximum outer diameter of the wind wheel needs to be kept unchanged, when k is smaller than 7, the radial distance between part of blades 120 and the rotation center is too small, so that the working capacity is reduced; when k is greater than 9, the plurality of blades 120 are distributed similarly to a circumferential distribution around the axis of the disk 100, and acoustic interference may occur.

According to some embodiments of the present invention, referring to fig. 1 and 2, the middle portion of the wheel disc 100 is provided with a boss portion 130, and the boss portion 130 is provided with a connection hole 131. The connection hole 131 is used for connecting with a motor shaft of the motor so that the motor drives the centrifugal wind wheel to rotate.

Preferably, the centrifugal wind wheel further comprises a plurality of reinforcing ribs 140, the reinforcing ribs 140 are circumferentially distributed around the axis of the shaft sleeve portion 130, and the reinforcing ribs 140 are fixedly connected with the outer peripheral wall of the shaft sleeve portion 130 and the upper surface of the wheel disc 100 respectively, so that the connection stability of the shaft sleeve portion 130 and the wheel disc 100 is enhanced.

It should be noted that, referring to fig. 1 and fig. 2, the shape of the wheel disc 100 is adapted to the frame 110, that is, the outer edge of the wheel disc 100 is adapted to the outer edge of the frame 110, in this embodiment, the frame 110 is a heptagon ring shape, and then the outer edge of the wheel disc 100 is a heptagon shape; alternatively, the wheel disc 100 may have a disc shape.

In the description herein, references to the description of "some embodiments" mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A centrifugal wind wheel is applied to centrifugal fan, its characterized in that includes:

a wheel disc (100);

the rim (110) is positioned above the wheel disc (100), the rim (110) comprises a plurality of strip structures (111), and the strip structures (111) are sequentially connected end to end so that the rim (110) is in a polygonal ring shape;

the lower ends of the blades (120) are fixedly connected with the wheel disc (100), each long strip structure (111) is connected with the upper ends of the blades (120), and the blades (120) connected to the same long strip structure (111) are sequentially arranged along the extending direction of the long strip structure (111) so that the blades (120) are circumferentially distributed in a polygonal shape around the axis of the wheel disc (100).

2. Centrifugal wind wheel according to claim 1, wherein the strip structure (111) is curved to the side away from the axis of the wheel disc (100).

3. Centrifugal wind wheel according to claim 1, characterized in that the number of elongated structures (111) is k, k being an odd number.

4. A centrifugal wind wheel according to claim 3, wherein k satisfies: k =7, or k =9.

5. Centrifugal wind wheel according to claim 1, characterized in that the middle of the wheel disc (100) is provided with a boss part (130), and the boss part (130) is provided with a connection hole (131).

6. The centrifugal wind wheel according to claim 5, further comprising a plurality of reinforcing ribs (140), wherein the reinforcing ribs (140) are circumferentially distributed around the axis of the boss portion (130), and the reinforcing ribs (140) are fixedly connected with the outer peripheral wall of the boss portion (130) and the upper surface of the wheel disc (100), respectively.

7. Centrifugal wind wheel according to claim 1, characterized in that the wheel disc (100) is disc-shaped or that the outer edge shape of the wheel disc (100) is adapted to the outer edge shape of the rim (110).

8. A centrifugal wind rotor characterized in that it comprises a centrifugal wind rotor according to any of claims 1 to 7.