阅读说明：本技术 一种具有导流结构的离心风轮以及离心风机 (Centrifugal wind wheel with flow guide structure and centrifugal fan ) 是由 徐跃峰 姚碧波 覃宏 肖凯 曹璇 于 2020-10-22 设计创作，主要内容包括：本发明公开一种具有导流结构的离心风轮以及离心风机,该离心风轮包括底座、多个沿着圆周方向固定设置在底座上的叶片以及导流结构,所述导流结构包括多个沿着圆周方向均匀排列的导流部,所述导流部呈弧形结构,该导流部的弯曲方向与叶片的弯曲方向相同；所述导流部的一端延伸至底座的中心,另一端往底座的外围延伸；自底座的中心到底座的外围,所述导流部的高度逐渐递减。本发明可以优化流体在内部的流动,疏导流体流向叶片,继而从叶片之间流出,从而提高流体的输送效率,减少流体的能量损失。(The invention discloses a centrifugal wind wheel with a flow guide structure and a centrifugal fan, wherein the centrifugal wind wheel comprises a base, a plurality of blades fixedly arranged on the base along the circumferential direction and the flow guide structure, the flow guide structure comprises a plurality of flow guide parts uniformly arranged along the circumferential direction, the flow guide parts are of arc structures, and the bending direction of the flow guide parts is the same as the bending direction of the blades; one end of the flow guide part extends to the center of the base, and the other end of the flow guide part extends to the periphery of the base; the height of the flow guide part gradually decreases from the center of the base to the periphery of the base. The invention can optimize the flow of the fluid in the inner part, dredge the fluid to flow to the blades and then flow out from the blades, thereby improving the conveying efficiency of the fluid and reducing the energy loss of the fluid.)

1. A centrifugal wind wheel with a flow guide structure is characterized by comprising a base, a plurality of blades fixedly arranged on the base along the circumferential direction and the flow guide structure, wherein the flow guide structure comprises a plurality of flow guide parts uniformly arranged along the circumferential direction, the flow guide parts are of arc structures, and the bending direction of the flow guide parts is the same as the bending direction of the blades;

one end of the flow guide part extends to the center of the base, and the other end of the flow guide part extends to the periphery of the base; the height of the flow guide part gradually decreases from the center of the base to the periphery of the base.

2. The centrifugal wind wheel with the flow guide structure according to claim 1, wherein the arc structure is formed by three sections of structures, which are a straight section, an arc section and a straight section; the straight line sections are tangent to the arc sections.

3. The centrifugal wind wheel having a flow guide structure according to claim 1, wherein the number of flow guide parts is less than the number of blades.

4. A centrifugal fan with a flow guide structure is characterized by comprising the centrifugal wind wheel and a driving motor according to any one of claims 1 to 3, wherein the driving motor is fixedly connected with the centrifugal wind wheel through a transmission shaft.

5. The centrifugal fan with the flow guide structure according to claim 4, wherein the centrifugal wind wheel is provided with two sets of blades, and the two sets of blades are respectively arranged on two sides of the base.

6. The centrifugal fan with the flow guide structure according to claim 5, wherein there are two centrifugal wind wheels, and the two centrifugal wind wheels are fixedly connected to two sides of the driving motor through a transmission shaft.

7. The centrifugal fan with the flow guide structure according to claim 6, wherein the base is provided with an anti-misassembly structure for preventing misassembly, the anti-misassembly structure comprises shaft hole boss structures, the shaft hole boss structures extend to two sides of the base respectively, and distances from two end faces of the shaft hole boss structures to the end faces of the blades on the corresponding sides are different.

8. The centrifugal fan with a flow-guiding structure according to claim 7, wherein the anti-mismounting structure further comprises a concave-convex structure comprising a concave surface and a convex surface; the concave surface and the convex surface are respectively formed by two side surfaces of the base.

9. The centrifugal fan with the flow guide structure according to claim 7, wherein a shaft hole is formed in the shaft hole boss structure, and the transmission shaft penetrates through the shaft hole to be connected with the centrifugal wind wheel.

Technical Field

The invention relates to a centrifugal wind wheel and a centrifugal fan, in particular to a centrifugal wind wheel with a flow guide structure and a centrifugal fan.

Background

The centrifugal wind wheel is used for axially feeding air and radially discharging air, and applies work by using centrifugal force to enable air to improve pressure, the center of the wind wheel in the centrifugal wind wheel is an air inlet, when the wind wheel rotates, airflow is sucked from the air inlet at the bottom of the wind wheel, meanwhile, the rotating process of the wind wheel exerts a power effect on the airflow, the pressure and the speed of the air are improved, and the airflow is discharged along an exhaust port of a blade flow channel between blades in an impeller under the action of the centrifugal force. The existing centrifugal wind wheel blades are all arc-shaped blades, and when airflow is discharged from a flow channel between the blades, vortex is easily formed, so that the working efficiency of the wind wheel is reduced.

The invention application with application publication number CN 109099008A discloses a centrifugal wind wheel and an air conditioner with the same, the centrifugal wind wheel comprises: impeller bottom plate, impeller apron, a plurality of impeller blade, axle sleeve and kuppe. Wherein the impeller cover plate is arranged above the impeller bottom plate; the impeller blades are arranged between the impeller bottom plate and the impeller cover plate and are arranged in a ring shape around the rotation axis of the centrifugal wind wheel; the shaft sleeve and the impeller bottom plate are integrally formed, and the central axis of the shaft sleeve is superposed with the rotation axis of the centrifugal wind wheel; the air guide sleeve is detachably arranged on the impeller bottom plate. This centrifugal wind wheel is through forming an organic whole with axle sleeve and impeller bottom plate and improving centrifugal wind wheel's structural strength and stability greatly, and the kuppe is used for covering a plurality of heat dissipation through-holes of establishing on domatic, avoids centrifugal wind wheel inspiratory air current and takes place the offset with the air current by the motor heating, has reduced the noise because of the air current produces of disorder, has improved centrifugal wind wheel's efficiency. However, the air guide sleeve does not solve the problem that air flows out from the blades, and airflow is not dredged, so that the air can flow to the blades in a messy manner or collide all around, the phenomenon of messy flow is caused, the working efficiency of the wind wheel is reduced, and the vortex noise of the wind wheel is increased.

Disclosure of Invention

The present invention is directed to overcome the above problems and to provide a centrifugal wind wheel with a flow guide structure, which can optimize the flow of fluid inside, guide the fluid to flow to the blades, and then flow out from between the blades, thereby improving the fluid transportation efficiency and reducing the energy loss of the fluid.

Another object of the present invention is to provide a centrifugal fan having a flow guide structure.

The purpose of the invention is realized by the following technical scheme:

a centrifugal wind wheel with a flow guide structure comprises a base, a plurality of blades fixedly arranged on the base along the circumferential direction and the flow guide structure, wherein the flow guide structure comprises a plurality of flow guide parts which are uniformly arranged along the circumferential direction, the flow guide parts are of arc structures, and the bending direction of the flow guide parts is the same as that of the blades;

one end of the flow guide part extends to the center of the base, and the other end of the flow guide part extends to the periphery of the base; the height of the flow guide part gradually decreases from the center of the base to the periphery of the base.

The working principle of the centrifugal wind wheel with the flow guide structure is as follows:

when the air-suction type fan works, the blades rotate at a high speed under the driving of the driving motor, air flow is sucked in the axial direction and then flows out from the space between the blades in the radial direction. The guide structure is of an approximate arc structure with a certain radian, the bending direction of the guide structure is consistent with the bending direction of the blades, and fluid can flow into the blades in the wind wheel in the same flowing direction as the bending direction of the blades after being dredged by the guide structure, so that the flowing direction of the fluid in the wind wheel is optimized, and the fluid flows out of the wind wheel, the efficiency of the wind wheel for conveying the fluid is improved, and the efficiency of the fan is improved.

In a preferred embodiment of the present invention, the arc structure is formed by three segments, which are respectively a straight segment, an arc segment and a straight segment; the straight line sections are tangent to the arc sections. Thus, the eddy current loss caused by the sudden change of the flow channel can be avoided.

In a preferred embodiment of the present invention, the number of the flow guide portions is less than the number of the blades.

The utility model provides a centrifugal fan with water conservancy diversion structure, includes centrifugal wind wheel and driving motor, driving motor passes through transmission shaft and centrifugal wind wheel fixed connection.

In a preferred embodiment of the present invention, the centrifugal wind wheel has two sets of blades, and the two sets of blades are respectively disposed on two sides of the base.

Preferably, the centrifugal wind wheels are provided with two centrifugal wind wheels which are fixedly connected to two sides of the driving motor through transmission shafts.

Further, be equipped with the structure of preventing mistake dress that is used for preventing the mistake dress on the base, should prevent mistake dress structure and include shaft hole boss structure, shaft hole boss structure extends to the both sides of base respectively, and the distance that corresponds the blade terminal surface of side is not equal to two terminal surfaces of this shaft hole boss structure. Through the structure, when the centrifugal wind wheel is reversely installed, the centrifugal wind wheel interferes with the lower volute on the driving motor, so that the driving motor cannot be installed in the casing, and the fool-proof design is realized.

Furthermore, the false installation prevention structure also comprises a concave-convex surface structure, and the concave-convex surface structure comprises a concave surface and a convex surface; the concave surface and the convex surface are respectively formed by two side surfaces of the base. With the structure, the driving motor is arranged on the lower volute casing, so that the concave surface of the centrifugal wind wheel on one end of the transmission shaft faces the driving motor, and the centrifugal wind wheel is positioned on the left side of the lower volute casing; the convex surface of the centrifugal wind wheel on the other end of the transmission shaft faces the driving motor, and the centrifugal wind wheel is positioned on the right side of the lower volute. Further, if the installation is reversed, because the distance from two end faces of the same shaft hole boss structure to the blade end face of the corresponding side is unequal, two centrifugal wind wheels can interfere with the lower volute, so that the two centrifugal wind wheels cannot be installed in the lower volute, and the fool-proof design is realized. Specifically, two centrifugal wind wheels are respectively installed on two sides of the driving motor, so that the directions of the installation structures of the centrifugal wind wheels on the two sides are kept consistent, and the centrifugal wind wheels can be installed simply and efficiently by using the foolproof installation structures of the centrifugal wind wheels when workers produce the fan by only observing the installation structures of the centrifugal wind wheels.

According to a preferable scheme of the invention, an axle hole is arranged in the axle hole boss structure, and the transmission shaft penetrates through the axle hole to be connected with the centrifugal wind wheel.

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

1. according to the invention, the flow guide structure is arranged to dredge the fluid to form a flow direction consistent with the bending direction of the blades and flow to the blades, so that the flow direction of the fluid in the wind wheel is optimized, and the fluid flows out of the wind wheel, the efficiency of the wind wheel for conveying the fluid is improved, and the efficiency of the fan is improved.

Drawings

Fig. 1 is a side view of a centrifugal fan having a flow guide structure according to the present invention.

Fig. 2 is a sectional view taken along a-a in fig. 1.

Fig. 3 is a sectional view of the centrifugal wind wheel and the driving motor in fig. 2.

Fig. 4 is a side view of a centrifugal wind wheel having a flow guide structure according to the present invention.

Fig. 5 is a sectional view taken along the line B-B in fig. 4.

Detailed Description

In order to make those skilled in the art understand the technical solutions of the present invention well, the following description of the present invention is provided with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

Example 1

Referring to fig. 1 to 5, the centrifugal fan with a flow guiding structure in this embodiment includes a centrifugal wind wheel and a driving motor 1, and the driving motor 1 is fixedly connected with the centrifugal wind wheel through a transmission shaft 2; the centrifugal wind wheel comprises a base 3, a plurality of blades 4 fixedly arranged on the base 3 along the circumferential direction and a flow guide structure, wherein the flow guide structure comprises a plurality of flow guide parts 5 uniformly arranged along the circumferential direction, the flow guide parts 5 are of arc structures, and the bending direction of the flow guide parts 5 is the same as that of the blades 4; one end of the flow guide part 5 extends to the center of the base 3, and the other end extends to the periphery of the base 3; the height of the flow guide part 5 gradually decreases from the center of the base 3 to the periphery of the base 3.

Referring to fig. 1-5, the arc structure is composed of three segments, which are respectively a straight segment, an arc segment and a straight segment; the straight line sections are tangent to the arc sections. Thus, the eddy current loss caused by the sudden change of the flow channel can be avoided.

Referring to fig. 1-5, the number of flow guides 5 is less than the number of blades 4.

Referring to fig. 1-5, the centrifugal wind wheel is provided with two sets of blades 4, and the two sets of blades 4 are respectively arranged on two sides of the base 3.

Further, the centrifugal wind wheels are arranged in two numbers and are fixedly connected to two sides of the driving motor 1 through the transmission shafts 2.

Further, be equipped with on the base 3 and be used for preventing mistake dress and prevent mistake dress structure, should prevent mistake dress structure and include shaft hole convex structure 6, shaft hole convex structure 6 extends to the both sides of base 3 respectively, and the distance that two terminal surfaces of this shaft hole convex structure 6 reach the blade 4 terminal surface of corresponding side is unequal, and L1 is not equal to L2 promptly. Through the structure, when the centrifugal wind wheel is reversely installed, the centrifugal wind wheel interferes with the lower volute 10 on the driving motor 1, so that the driving motor 1 cannot be installed in the casing, and the fool-proof design is realized.

Further, the false installation prevention structure also comprises a concave-convex surface structure, and the concave-convex surface structure comprises a concave surface 7 and a convex surface 8; the concave surface 7 and the convex surface 8 are respectively formed by two side surfaces of the base 3. With the above structure, the driving motor 1 is mounted on the upper volute 9 and the lower volute 10, so that the concave surface 7 of the centrifugal wind wheel on one end of the transmission shaft 2 faces the driving motor 1, and the centrifugal wind wheel is positioned on the left side of the lower volute 10; the convex surface 8 of the centrifugal wind wheel on the other end of the transmission shaft 2 faces the driving motor 1, and the centrifugal wind wheel is positioned on the right side of the lower volute 10. Further, if the installation is reversed, because the distance from two end faces of the same shaft hole boss structure 6 to the end face of the blade 4 on the corresponding side is unequal, two centrifugal wind wheels can interfere with the lower volute 10, so that the two centrifugal wind wheels cannot be installed in the lower volute 10, and the fool-proof design is realized. Specifically, two centrifugal wind wheels are respectively installed on two sides of the driving motor 1, so that the directions of the installation structures of the centrifugal wind wheels on two sides are kept consistent, and the centrifugal wind wheels can be installed simply and efficiently by using the foolproof installation structure of the centrifugal wind wheels when workers produce the fan by only observing the installation structure of the centrifugal wind wheels.

Referring to fig. 2-5, a shaft hole is arranged in the shaft hole boss structure 6, and the transmission shaft 2 penetrates through the shaft hole to be connected with the centrifugal wind wheel.

Referring to fig. 1 to 5, the centrifugal wind wheel with a flow guiding structure in the present embodiment has the following working principle:

in operation, the blades 4 rotate at high speed under the drive of the drive motor 1, drawing in air flow in the axial direction and then flowing out in the radial direction from between the blades 4. Wherein, because the water conservancy diversion structure has the approximate arc structure of certain radian, and its crooked direction keeps unanimous with the 4 crooked directions of blade, and the fluid is inside the wind wheel, dredges the back through this water conservancy diversion structure, can form the flow direction unanimous with the 4 crooked directions of blade, flow direction blade 4 to optimize the flow direction of the inside fluid of wind wheel, and the air current flows out the impeller, improves the efficiency that the wind wheel carried fluid, promotes the efficiency of fan.

Example 2

Unlike embodiment 1, the flow guide structure in this embodiment is provided in a centrifugal fan of a single centrifugal wind wheel.

The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.