阅读说明：本技术 离心式散热扇扇轮及离心式散热扇 (Centrifugal heat dissipation fan wheel and centrifugal heat dissipation fan ) 是由 李朝勋 于 2020-07-22 设计创作，主要内容包括：本发明公开了一种离心式散热扇扇体及离心式散热扇,涉及散热扇技术领域,离心式散热扇扇体包括多个扇叶、轮毂和消音部,各扇叶的一端与轮毂固定连接,两相邻扇叶的进风端的外边缘固定设置有消音部,各消音部靠近轮毂的一端与轮毂外表面的距离不等,离心式散热扇包括壳体和上述的离心式散热扇扇轮,壳体内设置有离心式散热扇扇轮,壳体靠近扇叶的进风端的端面上开设有进风口,侧壁上开设有排风口。本发明提供了一种离心式散热扇扇体及离心式散热扇,消音部使流道发生改变,使从扇轮不同的位置出来的空气的压力不同,撞击壳体产生的风声的频率也不同,非同一频率的声音的集合,能够降低扇轮工作时产生的噪音。(The invention discloses a centrifugal heat dissipation fan body and a centrifugal heat dissipation fan, and relates to the technical field of heat dissipation fans. The invention provides a centrifugal heat radiation fan body and a centrifugal heat radiation fan, wherein a silencing part changes a flow passage, so that the pressure of air coming out from different positions of a fan wheel is different, the frequency of wind sound generated by impacting a shell is also different, and the noise generated when the fan wheel works can be reduced by the collection of sounds with different frequencies.)

1. The utility model provides a centrifugal heat dissipation fan impeller which characterized in that: the fan blade comprises a plurality of fan blades, a hub and a silencing part, wherein one end of each fan blade is fixedly connected with the hub, the two adjacent outer edges of the air inlet ends of the fan blades are fixedly provided with the silencing part, and the distance from one end, close to the hub, of each silencing part to the outer surface of the hub is unequal.

2. The centrifugal heat dissipating fan wheel according to claim 1, wherein: the noise reduction parts are fixedly connected to form a connecting ring, and the axis of the inner ring of the connecting ring is parallel to but not coincident with the axis of the hub.

3. The centrifugal heat dissipating fan wheel according to claim 2, wherein: the hub, the fan blades and the connecting ring are integrally formed.

4. The centrifugal heat dissipating fan wheel according to claim 1, wherein: each fan blade is an arc-shaped fan blade, and the distance between two adjacent fan blades gradually increases along the direction away from the hub.

5. The centrifugal heat dissipating fan wheel according to claim 4, wherein: along keeping away from wheel hub's direction, each the flabellum includes first arc portion and second arc portion, the one end of first arc portion with wheel hub fixed connection, the other end with the one end fixed connection of second arc portion, the crooked direction of first arc portion is opposite with the turning to of flabellum, the crooked direction of second arc portion is the same with the turning to of flabellum.

6. The centrifugal heat dissipating fan wheel according to claim 1, wherein: the outer surface of the hub is fixedly provided with a reinforcing ring, and one side of each fan blade, which is used for being connected with the hub, is fixedly connected with the reinforcing ring.

7. A centrifugal heat dissipation fan is characterized in that: the centrifugal heat dissipation fan wheel comprises a shell and the centrifugal heat dissipation fan wheel as claimed in any one of claims 1 to 6, wherein the thickness direction of the shell is parallel to the central line direction of a hub, the centrifugal heat dissipation fan wheel is arranged in the shell, an air inlet is formed in the end face, close to the air inlet end of the fan blade, of the shell, and an air outlet is formed in the side wall of the shell.

Technical Field

The invention relates to the technical field of heat dissipation fans, in particular to a centrifugal heat dissipation fan wheel and a centrifugal heat dissipation fan.

Background

The electronic components inside the notebook computer can generate heat usually during working, so that the temperature of the components is raised, and the normal work of the components is influenced, therefore, a heat dissipation device must be installed to ensure that the components can normally work at a proper temperature, along with the gradual improvement of the performance of the notebook computer, the requirement on the performance of a heat dissipation fan is higher and higher, in the prior art, the heat dissipation performance of the heat dissipation fan is generally improved by improving the rotating speed of the heat dissipation fan, and the problem of high noise is also revealed while the heat dissipation performance of the heat dissipation fan is improved, so that the requirement of a notebook computer user on the use comfort level cannot be met.

Disclosure of Invention

The invention aims to provide a centrifugal heat dissipation fan wheel and a centrifugal heat dissipation fan, which are used for solving the problems in the prior art and reducing the noise of the heat dissipation fan during working.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a centrifugal heat dissipation fan wheel, which comprises a plurality of fan blades, a hub and silencing parts, wherein one end of each fan blade is fixedly connected with the hub, the outer edges of the air inlet ends of two adjacent fan blades are fixedly provided with the silencing parts, and the distances from one end of each silencing part close to the hub to the outer surface of the hub are different.

Preferably, each sound attenuation part is fixedly connected to form a connecting ring, and the axis of the inner ring of the connecting ring is parallel to but not coincident with the axis of the hub.

Preferably, the hub, the blades and the connecting ring are integrally formed.

Preferably, each fan blade is an arc-shaped fan blade, and the distance between two adjacent fan blades gradually increases along the direction away from the hub.

Preferably, each fan blade comprises a first arc-shaped part and a second arc-shaped part along the direction far away from the hub, one end of the first arc-shaped part is fixedly connected with the hub, the other end of the first arc-shaped part is fixedly connected with one end of the second arc-shaped part, the bending direction of the first arc-shaped part is opposite to the rotation direction of the fan wheel, and the bending direction of the second arc-shaped part is the same as the rotation direction of the fan wheel.

Preferably, a reinforcing ring is fixedly arranged on the outer surface of the hub, and one side of each fan blade, which is used for being connected with the hub, is fixedly connected with the reinforcing ring.

The invention also provides a centrifugal heat-radiating fan, which comprises a shell and any one of the centrifugal heat-radiating fan wheels, wherein the thickness direction of the shell is parallel to the central line direction of the hub, the centrifugal heat-radiating fan wheel is arranged in the shell, an air inlet is formed in the end surface of the shell, which is close to the air inlet end of the fan blade, and an air outlet is formed in the side wall of the shell.

Compared with the prior art, the invention has the following technical effects:

the invention provides a centrifugal heat radiation fan body and a centrifugal heat radiation fan, wherein when air flows in a flow channel, the air successively passes through a silencing part fixedly arranged on the edge of a fan wheel, when the air passes through the silencing part, the flow channel is a flow channel formed by the side walls of two adjacent fan blades, the surface in the silencing part and the lower end surface of a shell, the pressure of the air can be changed, the pressure of the air coming out from different positions of the fan wheel is different, the frequency of wind sound generated by impacting the shell is also different, the noise generated by the operation of the fan wheel is the collection of sound with different frequencies instead of the collection of sound with the same frequency, the noise generated during the operation of the fan wheel can be reduced, after the noise is reduced, a space is provided for improving the rotating speed of the fan wheel, the rotating speed of the fan wheel is conveniently improved, the air volume is increased, and the heat.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in 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 invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a fan wheel of a centrifugal heat dissipation fan according to an embodiment;

fig. 2 is a schematic structural diagram of a centrifugal heat dissipation fan according to a second embodiment.

In the figure: 1-fan blades; 2-a hub; 3-connecting rings; 4-a reinforcement ring; 5-a shell; 6-air inlet; 7-air outlet.

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 invention, 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 invention aims to provide a centrifugal heat dissipation fan wheel and a centrifugal heat dissipation fan, which are used for solving the problems in the prior art and reducing the noise of the heat dissipation fan during working.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.