CN215949924U

CN215949924U - Low-noise centrifugal wind wheel

Info

Publication number: CN215949924U
Application number: CN202121436663.XU
Authority: CN
Inventors: 南剑; 李林涛; 项昌志; 庞旭
Original assignee: Kunshan Sunwill Electric Appliance Co ltd
Current assignee: Kunshan Sunwill Electric Appliance Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-03-04
Anticipated expiration: 2031-06-25

Abstract

The application relates to the technical field of wind wheels, in particular to a low-noise centrifugal wind wheel. The fan blade type wind power generation device comprises a circular bottom plate and a flow guide ring positioned above the circular bottom plate, wherein a plurality of fan blades are arranged between the circular bottom plate and the flow guide ring and are annularly distributed around the edge of the upper surface of the circular bottom plate; the top of each fan blade is connected to the bottom of the guide ring, and the position of the inner ring of the guide ring corresponds to the middle position of the top of each fan blade; the section of the guide ring is arc-shaped. This application improves the fan blade and the stability of being connected of water conservancy diversion circle through the shape that changes the water conservancy diversion circle, makes the water conservancy diversion circle atress more even, reduces the vibrations of water conservancy diversion circle, improves the stable and then noise abatement's of flywheel work production.

Description

Low-noise centrifugal wind wheel

Technical Field

The application relates to the technical field of wind wheels, in particular to a low-noise centrifugal wind wheel.

Background

The centrifugal wind wheel is a wind wheel which can axially intake air and radially output air and applies work by utilizing centrifugal force, and is mainly used in an air conditioner.

With the rapid development of the domestic air-conditioning industry, the requirements for the miniaturization and low noise of the fan are higher and higher, and the noise is an important factor influencing the overall quality of the air conditioner. The noise of the centrifugal rotor is mainly caused by rotation, and the uneven distribution of air flow speed and pressure in the centrifugal rotor when the centrifugal rotor rotates is a main cause of the noise.

Referring to fig. 1, the multi-wing centrifugal wind wheel comprises a circular bottom plate and a flow guide ring, wherein a plurality of blades are arranged between the circular bottom plate and the flow guide ring, and the outer edges of the tops of the blades are connected to the edge of an inner ring of the flow guide ring. The strength of the connection mode is low, and when the centrifugal wind wheel rotates, the stress of the connection part between the guide ring and the fan blade is far larger than that of other parts, so that the guide ring is stressed unevenly, vibration is generated, and noise is further caused.

SUMMERY OF THE UTILITY MODEL

The application provides a low noise centrifugal wind wheel to it evenly and produces the problem of noise to propose centrifugal wind wheel atress among the above-mentioned background art to solve.

In order to achieve the above purpose, the present application provides the following technical solutions:

a low-noise centrifugal wind wheel comprises a circular bottom plate and a flow guide ring positioned above the circular bottom plate, wherein a plurality of blades are arranged between the circular bottom plate and the flow guide ring and are annularly distributed around the edge of the upper surface of the circular bottom plate; the top of each fan blade is connected to the bottom of the guide ring, and the position of the inner ring of the guide ring corresponds to the middle position of the top of each fan blade; the section of the guide ring is arc-shaped.

Preferably, each fan blade is arc-shaped.

Preferably, a plurality of the fan blades are uniformly distributed in the circumferential direction.

Preferably, each fan blade is divided into a first part and a second part along the vertical direction of the fan blade, the first part is located on the inner side of the flow guide ring, and the top of the second part is attached to the bottom of the flow guide ring.

Preferably, the top of the first part is arc-shaped and inclined upwards and is formed with a reinforcing rib.

Preferably, the reinforcing rib is positioned above the upper surface of the deflector ring.

Preferably, the top of the flow guide ring is an upper arc surface, and the bottom of the flow guide ring is a lower arc surface.

Compared with the prior art, the beneficial effects of this application are:

(1) the cross section of the flow guide ring is arc-shaped, so that the strength of the flow guide ring is increased, the stability of the flow guide ring is increased, the vibration condition of the flow guide ring is reduced, and the noise is reduced.

(2) Set up the strengthening rib on the water conservancy diversion circles, the strengthening rib increases the intensity of water conservancy diversion circle, reduces the condition that the water conservancy diversion circle warp, has increased the stability of water conservancy diversion circle operation.

Drawings

FIG. 1 is a schematic view of a prior art centrifugal wind wheel;

fig. 2 is a schematic structural view of a low-noise centrifugal wind wheel according to an embodiment of the present application;

fig. 3 is a cross-sectional view of a low noise centrifugal wind wheel according to an embodiment of the present application.

In the figure: 1. a circular base plate; 2. a flow guide ring; 3. a fan blade; 11. a hub; 21. an upper arc surface; 22. a lower arc surface; 31. a first portion; 32. a second portion; 33. and (5) reinforcing ribs.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The application provides a low noise centrifugal wind wheel, refer to fig. 2 and 3, centrifugal wind wheel includes circular bottom plate 1 and the water conservancy diversion circle 2 that is located circular bottom plate 1 top, has a plurality of fan blades 3 between circular bottom plate 1 and the water conservancy diversion circle 2, and a plurality of fan blades 3 are the annular setting on circular bottom plate 1. The round bottom plate 1 is also provided with a hub 11, and the hub 11 and the round bottom plate 1 are of an integrated structure and are used for bearing the rotating shaft.

Referring to fig. 2 and 3, each fan blade 3 is vertically arranged on the circular bottom plate 1, the centers of the fan blades 3 are consistent with the center of the circular bottom plate 1, the fan blades 3 are distributed at equal angles in the circumferential direction of the circular bottom plate 1, and when the centrifugal wind wheel rotates, the fan blades 3 are stressed uniformly. The bottom of each fan blade 3 all is located the upper surface of circular bottom plate 1, and the bottom of each fan blade 3 all is located the edge of circular bottom plate 1. The cross section of each fan blade 3 is arc-shaped so as to increase the strength of the fan blade 3.

Referring to fig. 2 and 3, the guide ring 2 is annular as a whole, the cross section of the guide ring is arc-shaped, the top of the guide ring 2 is an upper arc surface 21, and the bottom of the guide ring 2 is a lower arc surface 22. For the cross-section with water conservancy diversion circle 2 establishes to square, arc cross-section's water conservancy diversion circle 2 intensity is higher, can adapt to great rotational speed to and rotate in-process and keep stable. The top end of each fan blade 3 is connected with the guide ring 2 in a welding mode. Each fan blade 3 is divided into a first part 31 and a second part 32 along the vertical direction of the fan blade, wherein the first part 31 is positioned below the inner ring of the guide ring 2, and the second part 32 is positioned below the inner side of the guide ring 2. The top of the first part 31 is in a circular arc shape and inclines upwards, the top of the first part 31 crosses the edge of the inner side of the guide ring 2, a reinforcing rib 33 is formed on the upper arc surface 21, and the reinforcing rib 33 is positioned in the middle of the upper arc surface 21. The top of the second part 32 is welded with the lower cambered surface 22 of the guide ring 2. The fan blade 3 is connected with the flow guide ring 2 in such a way, the connection between the top end of the fan blade 3 and the flow guide ring 2 is more stable, the strength is higher, and the stress of the flow guide ring 2 is more uniform.

The implementation principle of the embodiment of the application is as follows: the rotating shaft of the motor is inserted into the hub 11 of the centrifugal wind wheel, the centrifugal wind wheel is driven by the motor, when the centrifugal wind wheel rotates, air flows in the radial direction from the axial direction through the fan blades 3, and the wind blows out from the radial direction of the centrifugal wind wheel. The guide ring 2 which is arranged into an arc shape has higher strength and rigidity, and can reduce vibration and noise.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A low noise centrifugal wind wheel which is characterized in that: the fan blade assembly comprises a circular bottom plate (1) and a flow guide ring (2) positioned above the circular bottom plate (1), wherein a plurality of fan blades (3) are arranged between the circular bottom plate (1) and the flow guide ring (2), and the plurality of fan blades (3) are annularly distributed around the edge of the upper surface of the circular bottom plate (1); the top of each fan blade (3) is connected to the bottom of the flow guide ring (2), and the position of the inner ring of the flow guide ring (2) corresponds to the middle position of the top of each fan blade (3); the section of the guide ring (2) is arc-shaped.

2. The low noise centrifugal wind wheel according to claim 1, wherein: each fan blade (3) is arc-shaped.

3. The low noise centrifugal wind wheel according to claim 2, wherein: the fan blades (3) are uniformly distributed in the circumferential direction.

4. A low noise centrifugal wind wheel according to claim 3, wherein: each fan blade (3) is divided into a first part (31) and a second part (32) along the vertical direction of the fan blade, the first part (31) is located on the inner side of the flow guide ring (2), and the top of the second part (32) is attached to the bottom of the flow guide ring (2).

5. The low noise centrifugal wind wheel according to claim 4, wherein: the top of the first part (31) is arc-shaped, inclined upwards and is provided with a reinforcing rib (33).

6. The low noise centrifugal wind wheel according to claim 5, wherein: the reinforcing ribs (33) are positioned above the upper surface of the flow guide ring (2).

7. The low noise centrifugal wind wheel according to claim 1, wherein: the top of the guide ring (2) is an upper arc surface (21), and the bottom of the guide ring (2) is a lower arc surface (22).