阅读说明：本技术 一种具有双弧型叶片的风机叶轮 (Fan impeller with double-arc-shaped blades ) 是由 高显 孙仲华 于 2020-05-29 设计创作，主要内容包括：本发明公开了一种具有双弧型叶片的风机叶轮,包括叶轮本体及若干绕圆心螺旋式发散均布的双弧型叶片,双弧型叶片固定在叶轮本体两侧轮面板上,具有近轮圆心的导流弧段及远离轮圆心的加压弧段,导流弧段头部近轮圆心,尾部与加压弧段头部连接,加压弧段尾部远离轮圆心向叶轮出风口方向沿伸,导流弧段及加压弧段具有不同的圆弧半径且加压弧段圆弧半径大于导流弧段圆弧半径,进入叶轮本体的气流经导流弧段的导流和加压弧段的加压作用后流出。本发明有效地提高了风机的出风效率,降低了风机噪音。(The invention discloses a fan impeller with double-arc blades, which comprises an impeller body and a plurality of double-arc blades spirally dispersed and uniformly distributed around the circle center, wherein the double-arc blades are fixed on wheel panels at two sides of the impeller body and are provided with a flow guide arc section close to the circle center of a wheel and a pressurizing arc section far away from the circle center of the wheel, the head part of the flow guide arc section is close to the circle center of the wheel, the tail part of the pressurizing arc section is connected with the head part of the pressurizing arc section, the tail part of the pressurizing arc section is far away from the circle center of the wheel and extends towards the air outlet direction of the impeller, the flow guide arc section and the pressurizing arc section have different arc radiuses, the arc radius of the pressurizing arc section is larger than that of the flow guide arc section. The invention effectively improves the air outlet efficiency of the fan and reduces the noise of the fan.)

1. The utility model provides a fan wheel with double arc type blade, includes the impeller body, its characterized in that still includes a plurality of double arc type blades, double arc type blade is fixed on the wheel panel of impeller body both sides, has the water conservancy diversion segmental arc of nearly wheel centre of a circle and keeps away from the pressurization segmental arc of wheel centre of a circle, water conservancy diversion segmental arc head nearly wheel centre of a circle, the afterbody with pressurization segmental arc head is connected, pressurization segmental arc afterbody is kept away from the wheel centre of a circle and is followed to impeller air outlet direction and stretch, water conservancy diversion segmental arc and pressurization segmental arc have different circular arc radius just pressurization segmental arc radius is greater than water conservancy diversion segmental arc radius, and the air current that gets into the impeller body flows through the water conservancy diversion of water conservancy diversion segmental arc and the pressurization effect of pressurization segmental arc.

2. The blower impeller with double-arc type blades as claimed in claim 1, wherein the double-arc type blades are spirally divergently and uniformly distributed around the center of a circle.

3. The fan wheel with double arc type blades according to claim 1, wherein the number of said double arc type blades is seven.

4. The fan impeller with the double-arc type blades as claimed in any one of claims 1 to 3, wherein the arc radius of the guide arc section is within the range of 320-420 mm.

5. Fan impeller with blades of the double arc type according to claim 4, characterized in that the arc radius of said guiding arc section is 386 mm.

6. The fan impeller with double-arc type blades as claimed in any one of claims 1 to 3, wherein the arc radius of the pressurizing arc section is in the range of 350-450 mm.

7. Fan impeller with blades of the double arc type according to claim 6, characterized in that the arc radius of said pressing arc segment is 377 mm.

Technical Field

The invention relates to the technical field of fan part manufacturing, in particular to a fan impeller with double-arc blades.

Background

The working principle of the fan is that the impeller moves relatively in the fan shell to compress and convey gas, the impeller pressurizes and accelerates the gas flow, and electric energy is converted into kinetic energy and potential energy of the gas. When high-speed air current flows out from the impeller, the air current queue order is better, gives vent to anger the efficiency and is higher, and the noise just also is lower, and on the contrary, give vent to anger efficiency and can reduce, and the noise also can increase. The blades of the existing fan impeller are all single-arc blades, airflow is smoothly guided out of the impeller through the flow guiding effect of the single-arc blades, and the air outlet efficiency of the ejected high-speed airflow is unsatisfactory and large noise is easily caused.

Disclosure of Invention

Aiming at the defects of the prior art, the invention solves the technical problems of how to improve the air outlet efficiency of high-speed airflow and reduce the noise of the fan by the fan impeller.

In order to solve the technical problems, the technical scheme adopted by the invention is that the fan impeller with the double-arc-shaped blades comprises an impeller body and a plurality of double-arc-shaped blades, wherein the double-arc-shaped blades are fixed on wheel panels on two sides of the impeller body, the double-arc-shaped blades are provided with a flow guide arc section close to the circle center of a wheel and a pressurizing arc section far away from the circle center of the wheel, the head part of the flow guide arc section is close to the circle center of the wheel, the tail part of the pressurizing arc section is connected with the head part of the pressurizing arc section, the tail part of the pressurizing arc section is far away from the circle center of the wheel and extends towards the air outlet of the impeller, the flow guide arc section and the pressurizing arc section have different arc radiuses, the arc radius of the pressurizing arc section is larger than that of the flow guide.

Preferably, the double-arc blades are uniformly distributed around the circle center in a spiral manner.

Preferably, the number of the double arc type blades is seven.

Preferably, the arc radius range of the flow guide arc section is 320-420 mm.

Further, the arc radius of the flow guide arc section is 386 mm.

Preferably, the arc radius of the pressurizing arc section is 350-450 mm.

Further, the arc radius of the pressurizing arc section is 377 mm.

Compared with the prior art, the technical scheme of the invention effectively improves the air outlet efficiency of the fan and reduces the noise of the fan.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

fig. 2 is a perspective view of the present invention.

Detailed Description

The following further describes the embodiments of the present invention with reference to the drawings, but the present invention is not limited thereto.

Fig. 1 and 2 show a fan impeller with double-arc blades, which includes an impeller body 1 and a plurality of double-arc blades 2, the double-arc blades 2 are fixed on the wheel panels at two sides of the impeller body 1, a guide arc section 21 near the center of a wheel and a pressurizing arc section 22 far away from the center of a wheel are provided, the head of the guide arc section 21 is near the center of a wheel, the tail of the guide arc section is connected with the head of the pressurizing arc section 22, the tail of the pressurizing arc section 22 is far away from the center of a wheel and extends towards the direction of an air outlet of the impeller, the guide arc section 21 and the pressurizing arc section 22 have different arc radiuses, the arc radius of the pressurizing arc section 22 is larger than the arc radius of the guide arc section 21, and the air flow entering the impeller body 1 flows out after the guide of the guide.

Preferably, the double-arc type blades 2 are spirally dispersed and uniformly distributed around the circle center.

Preferably, the number of the double arc type blades 2 is seven.

Preferably, the arc radius of the guide arc section 21 is in the range of 320-420 mm.

Further, the arc radius of the flow guiding arc section 21 is 386 mm.

Preferably, the arc radius of the pressing arc segment 22 is in the range of 350-450 mm.

Further, the arc radius of the pressing arc 22 is 377 mm.

The working principle of the invention is as follows: when the impeller body 1 operates, airflow enters the impeller body 1, the impeller body 1 rotates at a high speed, the airflow is guided by the guide arc section 21 and then flows out of the impeller body 1 under the pressurizing action of the pressurizing arc section 22, and the efficiency of an airflow outlet is effectively improved by the pressurized airflow.

By adopting the technical scheme of the invention, the air outlet efficiency of the fan is effectively improved, and the noise of the fan is reduced.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention.