CN213808167U

CN213808167U - Centrifugal fan and impeller structure thereof

Info

Publication number: CN213808167U
Application number: CN202022828327.1U
Authority: CN
Inventors: 姚晟; 刘行安; 赵进
Original assignee: Opp Lighting Appliances Zhongshan Co ltd; Opple Lighting Co Ltd
Current assignee: Opp Lighting Appliances Zhongshan Co ltd; Opple Lighting Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-07-27
Anticipated expiration: 2030-11-30

Abstract

The application discloses centrifugal fan and impeller structure thereof, wherein, impeller structure includes: rim plate and blade, a plurality of blades set up around the rim plate, have the clearance between the adjacent blade in order to form the runner, the runner has air intake and air outlet relative setting, the both sides of runner have relative first water conservancy diversion face and the second water conservancy diversion face that sets up, first water conservancy diversion face sets up and the slope trend and the clockwise rotation direction syntropy of rim plate near one side slope of air outlet at least, the second water conservancy diversion face is close to air outlet one side slope at least and sets up and slope trend and the anticlockwise rotation direction syntropy of rim plate. This application is all inclined to be set up through the first water conservancy diversion face and the second water conservancy diversion face that make the relative both sides of runner for the air current can both accelerate to pass through the runner when the rim plate is just reversing.

Description

Centrifugal fan and impeller structure thereof

Technical Field

The application relates to the field of fans, in particular to a centrifugal fan and an impeller structure thereof.

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy.

It is one of the subjects of the current research to improve the blowing and ventilation air volume without changing the size of the fan.

SUMMERY OF THE UTILITY MODEL

The utility model provides an impeller structure, include: the wheel disc and the blades are wound by the blades, a gap is formed between the blades to form a flow channel, the flow channel is provided with an air inlet and an air outlet which are oppositely arranged, the two sides of the flow channel are provided with a first flow guide surface and a second flow guide surface which are oppositely arranged, the first flow guide surface is at least close to one side of the air outlet, the inclined trend of the first flow guide surface is in the same direction as the clockwise rotation direction of the wheel disc, and the second flow guide surface is at least close to one side of the air outlet, the inclined trend of the first flow guide surface is in the same direction as the anticlockwise rotation direction of the wheel disc.

Furthermore, the first flow guide surface and the second flow guide surface are inclined around the axial direction of the wheel disc, so that the width of the flow channel in the extending direction from the air inlet to the air outlet is gradually reduced.

Furthermore, the first flow guide surface and the second flow guide surface are inclined around the axial direction and the radial direction of the wheel disc, so that the height and the width of the flow channel in the extending direction from the air inlet to the air outlet are gradually reduced.

Further, the first flow guiding surface and the second flow guiding surface are arc-shaped surfaces.

Further, the first flow guiding surface and the second flow guiding surface are inclined surfaces.

Further, the first flow guiding surface and the second flow guiding surface are multi-section inclined surfaces.

Further, the blade mounting structure further comprises a mounting and supporting portion arranged around the wheel disc, and the blade is arranged on the mounting and supporting portion.

Furthermore, the blade is provided with a fixing ring positioned on one side opposite to the installation supporting part, and the fixing ring is arranged around the wheel disc.

Furthermore, a lightening hole is formed in the wheel disc.

The application also provides a centrifugal fan, which comprises the impeller structure.

Compared with the prior art, the beneficial effects of the utility model are as follows:

have the clearance in order to form the runner between the adjacent blade in this application, the trend that is located the first water conservancy diversion face and the slope of second water conservancy diversion face of runner both sides is different, leads to with the clockwise and anticlockwise pivoted direction of rim plate respectively to can make the rim plate can both accelerate the passing through the air current of runner when just reversing, thereby make the velocity of flow of air current faster, the wind-force of formation is bigger. Meanwhile, the inclination trend of the first flow guide surface is different from that of the second flow guide surface, so that the area of the cross section of the formed flow channel in the direction from the air inlet to the air outlet is gradually reduced, and the air outlet efficiency of the blade is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic diagram according to one embodiment of the present application;

FIG. 2 is a schematic view of a flow channel of the present application;

fig. 3 is a schematic top view of the present application.

Description of reference numerals: 100-wheel disc, 110-mounting support part, 120-fixing ring, 130-lightening hole, 200-blade, 210-flow channel, 211-air inlet, 212-air outlet, 213-first guide surface and 214-second guide surface.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, 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 application.

Fig. 1 schematically shows an impeller structure according to an embodiment of the present application, the impeller structure includes a wheel disc 100 and blades 200, a plurality of blades 200 are disposed around the wheel disc 100, gaps are formed between adjacent blades 200 to form a flow passage 210, the blades 200 disposed thereon can be driven to rotate when the wheel disc 100 rotates so as to form an air flow, the flow passage 210 has an air inlet 211 and an air outlet 212 which are oppositely disposed, the air flow can enter from the air inlet 211 and then be discharged through the air outlet 212, so that a sensible wind force is formed at the air outlet 212.

The blade 200 has a first guiding surface 213 and a second guiding surface 214 located at two opposite sides of the flow channel 210, the first guiding surface 213 is at least inclined near one side of the air outlet 212 and has an inclination trend in the same direction as the clockwise rotation direction of the wheel disc 100, and the second guiding surface 214 is at least inclined near one side of the air outlet 212 and has an inclination trend in the same direction as the counterclockwise rotation direction of the wheel disc 100.

The inclination trend of the first guide surface 213 is the same as the clockwise rotation direction of the wheel disc 100, the first guide surface 213 arranged obliquely enables the blade 200 to have the effect of the forward blade 200, when the wheel disc 100 drives the blade 200 to rotate clockwise, the air flow enters from the air inlet 211 of the flow channel 210 to flow out from the air outlet 212, the air flow can be attached to the first guide surface 213 and flow along the first guide surface 213, the inclined first guide surface 213 can accelerate the air flow to pass through the flow channel 210, and therefore the wind force formed by the air flow discharged from the air outlet 212 is stronger.

Similarly, when the wheel disc 100 drives the blades 200 to rotate counterclockwise, the inclined second guiding surface 214 enables the airflow to adhere to the second guiding surface 214 and flow along the second guiding surface 214, and also enables the airflow to accelerate through the flow channel 210 and to be discharged from the air outlet 212, so that the wind power formed by the airflow discharged from the air outlet 212 is stronger.

Meanwhile, since the first guide surface 213 and the second guide surface 214 are both disposed obliquely, the cross section of the flow channel 210 along the direction from the air inlet 211 to the air outlet 212 is gradually reduced, so that the air outlet efficiency of the blade 200 after rotation can be improved.

In one embodiment, when the flow guide surfaces are disposed obliquely, specifically, as shown in fig. 2, the first flow guide surface 213 and the second flow guide surface 214 are inclined around the axial direction of the wheel disc 100, so that the width of the flow channel 210 gradually decreases from the air inlet 211 to the air outlet 212.

In one embodiment, the first guide surfaces 213 and the second guide surfaces 214 are inclined in the axial direction and the radial direction of the wheel disc 100, so that the height and the width of the flow channel 210 in the extending direction from the inlet 211 to the outlet 212 are gradually reduced, and the first guide surfaces 213 and the second guide surfaces 214 inclined in multiple directions can make the cross section of the flow channel 210 more narrow in the extending process from the inlet 211 to the outlet 212, and accordingly, the wind outlet efficiency of the blade 200 after rotation is higher.

In one embodiment, the first flow guiding surface 213 and the second flow guiding surface 214 are configured as arc surfaces, the surfaces of the arc surfaces are smoothly transited, and the air flows can smoothly flow through the arc first flow guiding surface 213 and the arc second flow guiding surface 214, it should be noted that the first flow guiding surface 213 may be arc-inclined integrally along one direction, and the second flow guiding surface 214 may also be arc-inclined integrally along one direction, so that the cross section of the flow channel 210 is gradually reduced. Of course, the first guiding surface 213 and the second guiding surface 214 may also be configured as an arc surface with a concave middle area, but it should be noted that at least the inclination trend of the first guiding surface 213 near the air outlet 212 is the same direction as the clockwise rotation direction of the wheel disc 100, and the inclination trend of the second guiding surface 214 near the air outlet 212 is the same direction as the counterclockwise rotation direction of the wheel disc 100.

In one embodiment, the first flow guiding surface 213 and the second flow guiding surface 214 are inclined surfaces and are an integral inclined surface with a flat surface, so that the airflow can be always accelerated during the process of passing through the first flow guiding surface 213 and the second flow guiding surface 214, and the area of the cross section of the flow channel 210 is always in a decreasing trend, thereby the speed of the airflow is faster.

The first guide surface 213 and the second guide surface 214 may also be provided as a plurality of connected inclined surfaces, and the inclined surfaces may be provided with different inclinations, so that the flow rate of the air flow is accurately controlled.

To facilitate the positioning of the blades 200, and also to make the blades 200 more stable, in one embodiment, a mounting support 110 is provided on the disk 100 around the disk 100, and a plurality of blades 200 are all positioned on the mounting support 110.

The installation support portion 110 may extend as an entire periphery of the wheel disc 100, the installation support portion 110 and the wheel disc 100 may be integrated, and the end surface of the blade 200 having a smaller area is fixed to the installation support portion 110, so that the blade 200 can be erected on the installation support portion 110, and thus the blade 200 and the wheel disc 100 can be stably connected.

It should be noted that the mounting support 110 and the wheel disc 100 may be detachably connected, and the blade 200 and the mounting support 110 may also be detachably connected, which may increase some manufacturing cost and assembly processes, but make the parts replaceable, and the application is not limited thereto.

In one embodiment, the blade 200 is provided with the fixing ring 120 at the opposite side of the mounting support 110, the fixing ring 120 is disposed around the disk 100, and the opposite ends of the blade 200 can be provided with the support points through the fixing ring 120 and the mounting support 110, so that the structural strength of the blade 200 can be improved.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The utility model provides an impeller structure, its characterized in that includes rim plate (100) and blade (200), and a plurality of blade (200) are around rim plate (100) sets up, and is adjacent have the clearance between blade (200) in order to form runner (210), runner (210) have relative air intake (211) and air outlet (212) that set up, the both sides of runner (210) have relative first water conservancy diversion face (213) and the second water conservancy diversion face (214) that set up, first water conservancy diversion face (213) are close to at least one side slope setting and the slope trend of air outlet (212) with rim plate (100) clockwise rotation direction syntropy, second water conservancy diversion face (214) are close to at least air outlet (212) one side slope setting and slope trend with rim plate (100) anticlockwise rotation direction syntropy.

2. The impeller structure of claim 1, characterized in that the first flow guiding surface (213) and the second flow guiding surface (214) are inclined around the axial direction of the wheel disc (100) so that the width of the flow channel (210) gradually decreases in the direction from the inlet opening (211) to the outlet opening (212).

3. The impeller structure of claim 1, characterized in that the first flow guiding surface (213) and the second flow guiding surface (214) are inclined around the axial direction and the radial direction of the wheel disc (100) so that the height and the width of the flow channel (210) are gradually reduced in the direction from the air inlet (211) to the air outlet (212).

4. The impeller structure of claim 2 or 3, characterized in that the first flow guiding surface (213) and the second flow guiding surface (214) are arc shaped surfaces.

5. An impeller structure according to claim 2 or 3, characterized in that the first flow guiding surface (213) and the second flow guiding surface (214) are bevelled.

6. An impeller structure according to claim 2 or 3, characterized in that the first flow guiding surface (213) and the second flow guiding surface (214) are multi-segment inclined surfaces.

7. The impeller structure of claim 1, further comprising a mounting support (110) disposed around the wheel disc (100), the blades (200) being disposed on the mounting support (110).

8. The impeller structure according to claim 7, characterized in that the blade (200) is provided with a fixing ring (120) on the opposite side of the mounting support (110), the fixing ring (120) being disposed around the disk (100).

9. The impeller structure of claim 7, characterized in that the wheel disc (100) is provided with lightening holes (130).

10. A centrifugal fan comprising an impeller structure according to any one of claims 1 to 9.