CN222810997U

CN222810997U - Low-noise fan

Info

Publication number: CN222810997U
Application number: CN202421691429.5U
Authority: CN
Inventors: 李为臻
Original assignee: Suzhou Yilan Technology Co ltd
Current assignee: Suzhou Yilan Technology Co ltd
Priority date: 2024-07-17
Filing date: 2024-07-17
Publication date: 2025-04-29
Anticipated expiration: 2034-07-17

Abstract

The utility model discloses a low-noise fan which comprises a fan body, an air inlet and a rectifying ring, wherein the air inlet of the fan body is formed in one side of a fan shell, and the rectifying ring is arranged on one side of the air inlet, which is positioned in the fan shell, and is used for finishing air flow entering from the air inlet and destroying vortex formation. And the rectifying ring device is designed at the air inlet and used for destroying vortex formation at the air inlet and avoiding noise generated by friction collision between vortex and parts at the air inlet and the fan body. The utility model solves the problems that in the use process of the existing fan, air flow is disturbed at the air inlet to generate vortex, and noise is caused by friction between the vortex and the fan, and noise is not reduced or improved from the structure of the fan body.

Description

Low-noise fan

Technical Field

The utility model belongs to the technical field of fan equipment, and particularly relates to a low-noise fan.

Background

The centrifugal fan sucks air from the air inlet through the rotation of the impeller, accelerates along radial fan blades, and finally discharges the air from the air outlet along the tangential direction of the impeller, thereby generating air flow.

When air is sucked from the air inlet, vortex flows are formed, and the vortex flows frequently collide with the fan shell and parts at the air inlet to form aerodynamic noise, so that the noise of the fan during operation is reduced, the parts are usually fastened to reduce the activity of the fan, the fan is integrally fastened to reduce the noise generated by the integral activity of the fan, a silencing device or a silencing cover is added to prevent the noise from being transmitted, and the problem of the noise of the fan at the air inlet is not fundamentally solved in any mode.

Disclosure of utility model

The utility model provides a low-noise fan, wherein a rectifying ring device is designed at an air inlet and used for destroying vortex formation at the air inlet and avoiding noise generated by friction collision between vortex and parts at the air inlet and a fan body. The utility model solves the problems that in the use process of the existing fan, air flow is disturbed at the air inlet to generate vortex, and noise is caused by friction between the vortex and the fan, and noise is not reduced or improved from the structure of the fan body.

In order to achieve the technical purpose, the utility model is realized by the following technical scheme:

a low noise fan comprises a fan, an air inlet and a rectifying ring;

the fan air inlet is formed in one side of the fan shell;

The air inlet is arranged on one side of the housing of the air blower, provided with a rectifying ring, and used for finishing air flow entering from the air inlet and destroying vortex formation.

Preferably, the rectifying ring is in a ring shape, a plurality of baffle plates are connected to the inner side of the rectifying ring, and the baffle plates are used for blocking and cutting the air flow which is about to form vortex.

Preferably, the baffle plates are obliquely arranged on the inner side of the rectifying ring, and the oblique directions are consistent.

Preferably, the number of the baffle plates is at least 3, and the baffle plates are divided at equal angles at intervals between the connecting positions of the inner sides of the rectifying rings.

Preferably, the baffle plates are in an n-shaped structure, and the edges of the baffle plates are sharp edges, so that contact friction between air flows passing through the baffle plates is reduced.

Preferably, the baffle plates are crisscrossed and connected to the inner side of the rectifying ring to form a grid shape, and when the air flow passes through, the air flow can be guided to prevent turbulence or vortex formation.

Preferably, the air inlet is provided with an outward-expanding bell mouth on one side outside the air blower housing, so as to facilitate air flow suction.

Preferably, fan blades are rotatably arranged in the fan and positioned at the rear side of the rectifying ring and are used for accelerating and centrifuging the air flow sucked from the air inlet to form wind energy air flow.

Preferably, an air outlet is arranged on the fan, and the formed wind energy airflow is output from the air outlet.

Preferably, a base is arranged on the lower side of the fan.

The beneficial effects of the utility model are as follows:

When the low-noise fan provided by the utility model is used, air flow can be prevented from forming vortex due to the attraction of the impeller under the action of the rectifying ring when the air flow passes through the air inlet, so that the friction collision between the vortex and parts at the air inlet of the fan body machine is prevented from generating noise, and the noise can be greatly reduced due to the existence of the rectifying ring.

The outside of the air inlet is provided with a horn mouth, which is favorable for air flow suction.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the front structure of the air inlet of the fan of the present utility model;

FIG. 2 is a schematic side internal structure of the present utility model;

FIG. 3 is a schematic diagram of a rectifying ring structure according to the present utility model;

FIG. 4 is a schematic view of a baffle structure of the present utility model;

FIG. 5 is a schematic side view of a baffle according to the present utility model;

FIG. 6 is a schematic view of a baffle structure of a rectifying ring according to embodiment 4 of the present utility model;

in the drawings, the list of components represented by the various numbers is as follows:

1-fan, 101-base, 2-air intake, 3-air outlet, 4-horn mouth, 5-fan blade, 6-rectification circle, 601-separation blade, 6011-sharp border.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-3, a low noise fan comprises a fan 1, an air inlet 2 and a rectifying ring 6;

The air inlet 2 of the fan 1 is formed in one side of the fan 1 shell, the rectifying ring 6 is arranged on one side of the air inlet 2 in the fan 1 shell, the rectifying ring 6 is in a ring shape, 4 baffle plates 601 are obliquely connected in the same direction in the rectifying ring 6, and the baffle plates 601 are used for blocking and cutting air flow which is about to form vortex and used for finishing air flow entering from the air inlet 2 to destroy vortex formation.

The fan blades 5 are rotatably arranged in the fan 1 and positioned at the rear side of the rectifying ring 6 and are used for accelerating and centrifuging the air flow sucked from the air inlet 2 to form wind energy air flow. An air outlet 3 is arranged on the fan 1, and the formed wind energy airflow is output from the air outlet 3. The lower side of the fan 1 is provided with a base 101.

Example 2

Referring to fig. 3 to 5, according to embodiment 1, the baffle 601 is equally angularly divided between the connection positions inside the commutator 6. The damage of each baffle 601 to the vortex is equalized;

the baffle 601 has an n-shaped structure, and the edge of the baffle 601 is a sharp edge, so as to reduce contact friction between the air flow passing through the baffle 601.

Example 3

Referring to fig. 2, according to embodiment 1, the air inlet 2 is provided with a flared bell mouth 4 on the side outside the housing of the fan 1 for the purpose of facilitating air suction.

Example 4

Referring to fig. 6, based on embodiment 1, the baffle plates are designed to be crisscrossed and connected to the inner side of the rectifying ring to form a grid shape, and when the air flow passes through, the air flow can be guided to prevent turbulence or vortex formation.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, 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 present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. A low-noise fan, characterized by comprising: a fan (1), an air inlet (2), and a rectifier (6);

The air inlet (2) of the fan (1) is disposed on one side of the housing of the fan (1);

The air inlet (2) is located on one side of the housing of the fan (1) and is provided with a rectifying ring (6) for rectifying the airflow entering from the air inlet (2) and destroying the formation of vortices.

2. A low-noise fan according to claim 1, characterized in that the rectifying ring (6) is in a circular ring shape, and a plurality of baffles (601) are connected to the inner side of the rectifying ring (6).

3. A low-noise fan according to claim 2, characterized in that the baffle (601) is installed at an angle on the inner side of the rectifier ring (6), and the inclination direction is consistent.

4. A low-noise fan according to claim 3, characterized in that the number of the baffles (601) is at least 3, and the intervals between the connection positions of the baffles (601) on the inner side of the rectifier ring (6) are divided into equal angles.

5. A low-noise fan according to claim 4, characterized in that the baffle (601) is in an "n"-shaped structure, and the edge of the baffle (601) is a sharp edge (6011).

6. A low-noise fan according to claim 2, characterized in that the baffles are crisscrossedly connected to the inner side of the rectifier ring to form a grid shape.

7. A low-noise fan according to claim 1, characterized in that the air inlet (2) is provided with an outwardly expanding bell mouth (4) on one side outside the fan (1) housing.

8. A low-noise fan according to claim 1, characterized in that fan blades (5) are rotatably arranged inside the fan (1) and located behind the rectifier ring (6).

9. A low-noise fan according to claim 1, characterized in that an air outlet (3) is provided on the fan (1); and a base (101) is provided at the lower side of the fan (1).