CN214945247U

CN214945247U - High-efficient low noise high strength's ventilation blower impeller

Info

Publication number: CN214945247U
Application number: CN202120692768.5U
Authority: CN
Inventors: 张宇祥; 胡国军; 王统; 金海强
Original assignee: Hangzhou Dunli Fan Co ltd; Hangzhou Dunli Electric Appliances Co ltd
Current assignee: Hangzhou Dunli Fan Co ltd; Hangzhou Dunli Electric Appliances Co ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-11-30
Anticipated expiration: 2031-04-06

Abstract

The utility model discloses a high-efficient low noise high strength's ventilation blower impeller, including skeleton and a plurality of blades of setting on the skeleton, be provided with the cockscomb structure opening on the blade trailing edge of blade, be provided with streamlined wing flap in the blade outer fringe of blade, the blade leading edge of blade is provided with the chamfer. The trailing edge of the blade can generate airflow vortexes to further reduce the efficiency of the ventilator and increase noise, and the trailing edge of the blade is provided with a plurality of sawtooth-shaped openings, so that vortexes can be cut off, the efficiency of the ventilator is improved, and the noise is reduced. The chamfer includes but not limited to chamfer or fillet, can effectual reduction windage, promotes wind wheel efficiency. The flap can effectively strengthen the strength of the blade.

Description

High-efficient low noise high strength's ventilation blower impeller

Technical Field

The utility model relates to a ventilation blower wheel technical field has especially related to a high-efficient low noise high strength's ventilation blower impeller.

Background

The impeller is common position in the fan, and the height and the noise size of fan efficiency are the important index of the quality of inspection fan, and common fan adopts the structure of extra increase to promote the efficiency of fan and reduce the noise of fan usually, and not only the structure is complicated and the cost is higher, and the installation is troublesome.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses a high-efficient low noise high strength's ventilation blower impeller.

The utility model adopts the following technical scheme:

the utility model provides a high-efficient low noise high strength's ventilation blower impeller, includes skeleton and a plurality of blades of setting on the skeleton, is provided with the cockscomb structure opening on the blade trailing edge of blade, is provided with streamlined wing flap on the blade outer fringe of blade, and the blade leading edge of blade is provided with the chamfer. The trailing edge of the blade can generate airflow vortexes to further reduce the efficiency of the ventilator and increase noise, and the trailing edge of the blade is provided with a plurality of sawtooth-shaped openings, so that vortexes can be cut off, the efficiency of the ventilator is improved, and the noise is reduced. The chamfer includes but not limited to chamfer or fillet, can effectual reduction windage, promotes wind wheel efficiency. The flap can effectively strengthen the strength of the blade.

Preferably, the framework is provided with reinforcing ribs.

Preferably, the blades are arc-shaped, the chord length from the inner edge of each blade to the outer edge of each blade is gradually increased in a linear relation, and the ratio of the chord length of the inner edge of each blade to the chord length of the outer edge of each blade is 1: 2-1: 4.

Preferably, the chamfer length L is 2-10 mm, and the radius R is 0.5-1.5 mm.

Preferably, one side of the flap is a concave surface, the other side of the flap is a convex surface, and the width H of the flap is between 4 and 40 mm.

Preferably, one side of the reinforcing rib protrudes from the surface of the framework, the other side of the reinforcing rib is recessed from the surface of the framework to form a groove, and the depth of the groove is 1-5 mm. The strength of the impeller can be effectively improved.

Preferably, the framework is provided with a hub which is linked with the output shaft of the motor.

Preferably, the blade is a metal blade or a plastic blade.

The utility model has the advantages that: (1) the blade tail edge of the blade of the utility model is provided with a plurality of sawtooth-shaped openings, which can cut vortex, improve the efficiency of the ventilator and reduce noise; (2) the front edge of the blade is provided with the chamfer, so that the wind resistance can be effectively reduced, and the wind wheel efficiency is improved; (3) the outer edge of the blade is provided with a streamline flap which can effectively strengthen the strength of the blade.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a blade structure of the present invention;

FIG. 3 is a cross-sectional view of the leading edge of the blade taken along the line A-A in FIG. 2;

in the figure, 1-framework, 1.1-reinforcing rib, 2-blade, 2.1-blade inner edge, 2.2-blade outer edge, 2.3-blade tail edge and 2.4-blade front edge.

Detailed Description

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

example (b): as shown in the attached drawings 1-2, the ventilator impeller with high efficiency, low noise and high strength comprises a framework 1 and a plurality of blades 2 arranged on the framework, wherein the tail edges 2.3 of the blades are provided with sawtooth-shaped openings, the outer edges 2.2 of the blades are provided with streamline-shaped flaps, and the front edges 2.4 of the blades are provided with chamfers. Be equipped with strengthening rib 1.1 and the wheel hub that links mutually with the motor output shaft on the skeleton, strengthening rib one side is followed the skeleton surface and is protruded, and the another side is followed the skeleton surface and is sunken, forms the recess, and the recess degree of depth is between 1 ~ 5 mm. One side of the flap is a concave surface, the other side of the flap is a convex surface, and the width H of the flap is between 4 and 40 mm.

The blades are arc-shaped, the chord length from the inner edge 2.1 of each blade to the outer edge of each blade is increased gradually in a linear relation, and the ratio of the chord length of the inner edge of each blade to the chord length of the outer edge of each blade is 1: 2-1: 4.

As shown in the attached figure 3, the chamfer length L of the front edge of the blade is 2-10 mm, and the radius R is 0.5-1.5 mm.

The high-efficiency low-noise high-strength ventilator impeller is provided with the plurality of zigzag openings on the tail edges of the blades, so that vortexes can be divided, the ventilator efficiency is improved, and noise is reduced; the front edge of the blade is provided with the chamfer, so that the wind resistance can be effectively reduced, and the wind wheel efficiency is improved; the outer edge of the blade is provided with a streamline flap which can effectively strengthen the strength of the blade.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.

Claims

1. The utility model provides a high-efficient low noise high strength's ventilation blower impeller, includes skeleton and a plurality of blades of setting on the skeleton, characterized by, be provided with the cockscomb structure opening on the blade trailing edge of blade, be provided with streamlined wing flap on the blade outer fringe of blade, the blade leading edge of blade is provided with the chamfer.

2. A highly efficient low noise high strength ventilator wheel as claimed in claim 1 wherein said frame is provided with ribs.

3. A high-efficiency low-noise high-strength ventilator impeller according to claim 1, characterized in that the blades are arc-shaped, the chord length from the inner edge of the blade to the outer edge of the blade is increased gradually in a linear relationship, and the ratio of the chord length of the inner edge of the blade to the chord length of the outer edge of the blade is 1: 2-1: 4.

4. A high efficiency, low noise and high strength ventilator wheel as claimed in claim 1, wherein said chamfer length L is between 2 and 10mm and radius R is between 0.5 and 1.5 mm.

5. A high-efficiency low-noise high-strength ventilator impeller according to claim 1, wherein one side of the flap is a concave side, the other side is a convex side, and the width H of the flap is 4-40 mm.

6. A high-efficiency low-noise high-strength ventilator impeller according to claim 2, wherein one surface of the reinforcing rib protrudes from the surface of the framework, and the other surface of the reinforcing rib is recessed from the surface of the framework to form a groove, and the depth of the groove is 1-5 mm.

7. A highly efficient, low noise, high strength ventilator wheel as claimed in claim 1 wherein said frame is provided with a hub which is operatively connected to the motor output shaft.

8. A highly efficient low noise high strength ventilator wheel according to claim 1 wherein said vanes are metal vanes or plastic vanes.