Centrifugal fan impeller

Abstract

The utility model discloses a centrifugal fan impeller which comprises a core disc, a plurality of blades are arranged on one side of the core disc, the blades are annularly arranged, the distance between every two adjacent blades is the same, an air inlet is formed in the position, located in the middle of the core disc, of each blade, and an air outlet is formed in the position, located outside the core disc, of each blade. Each blade is composed of a blade body and an upper blocking part, and the upper blocking part is arranged on the upper portion of the end, located at the air inlet, of each blade body. According to the utility model, the blade main body and the upper blocking part are of the integrally formed structure, the blade main body is of the arc-shaped structure, the upper blocking part is of the arc-shaped outward-turning structure, and the upper blocking part of the arc-shaped outward-turning structure can guide upper airflow to a certain extent, so that the noise generated by the upper airflow is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal fan related technical field, specifically a centrifugal fan impeller. BACKGROUND

[0002] The impeller for centrifugal fan is according to the principle of kinetic energy conversion into potential energy, utilizes the high -speed rotation impeller to accelerate gas, then deceleration, change flow direction, make kinetic energy conversion into potential energy (pressure).

[0003] The prior art with the publication number CN207229457U discloses an impeller for centrifugal fan, including core disc and blade, multiple blade is evenly distributed on the outer circumference of core disc in spoke shape, the air inlet end and air outlet end of blade are arranged at one end close to core disc and one end away from core disc respectively, the height of blade gradually increases from air inlet end to air outlet end, through the height of blade gradually increases from air inlet end to air outlet end, can effectively reduce the noise generated by air friction when blade rotates at high speed.

[0004] Although the prior art reduces the noise generated by air friction when blade rotates at high speed to a certain extent, the noise is still relatively large, therefore, we provide an impeller for centrifugal fan. UTILITY MODEL CONTENTS

[0005] The utility model discloses a centrifugal fan impeller to solve the problems in the prior art.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a centrifugal fan impeller, including core disc, the one side of core disc is provided with a plurality of blades, a plurality of blades are arranged in annular, the spacing between adjacent blades is same, the middle part of core disc is provided as air inlet with the blade, the outside of core disc is provided as air outlet with the blade, the blade is by blade main part and upper barrier portion, the upper portion of blade main part is provided with upper barrier portion in the upper portion of air inlet one end.

[0007] Preferably, the blade main body is arc structure, and the upper barrier portion is arc everted structure.

[0008] Preferably, the upper portion of the blade main body is provided with an upper arc concave structure, and the lower portion of the blade main body is provided with a lower arc concave structure, and the direction of the upper arc concave structure is opposite to the direction of the lower arc concave structure.

[0009] Preferably, the blade main body and the upper barrier portion are integrally formed.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] 1. The blade body and the upper obstruction are integrally molded structures. The blade body has an arc-shaped structure, and the upper obstruction has an arc-shaped outward-folding structure. The arc-shaped outward-folding upper obstruction can guide the airflow in the upper part to a certain extent, thereby greatly reducing the noise generated by the airflow in the upper part.

[0012] 2. The orientation of the upper concave structure is opposite to that of the lower concave structure. The orientation of the upper concave structure and the lower concave structure allows the airflow to flow smoothly, thereby reducing the noise generated by the airflow. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0015] Fig. 2 This is a schematic diagram of the blade structure of this utility model;

[0016] Fig. 3 This is the front view of this utility model.

[0017] In the diagram: 1. Core disk; 2. Blade; 3. Air inlet; 4. Air outlet; 21. Blade body; 22. Upper obstruction; 211. Upper arc-shaped concave structure; 212. Lower arc-shaped concave structure. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0019] Please see Figs. 1-3The utility model discloses a centrifugal fan impeller, including core disc 1, core disc 1 one side is provided with a plurality of blades 2, a plurality of blades 2 are annularly arranged, the spacing between adjacent blade 2 is same, the blade 2 is located the middle part of core disc 1 and is arranged as the air inlet 3, the blade 2 is located the outside of core disc 1 and is arranged as the air outlet 4, the blade 2 is by blade main body 21 and upper blocking portion 22, the blade main body 21 is located the upper portion of air inlet 3 one end and is provided with upper blocking portion 22, the blade main body 21 and upper blocking portion 22 are integrally formed structure, the blade main body 21 is arc structure, the upper blocking portion 22 is arc everted structure, and the upper blocking portion 22 of arc everted structure can guide the upper airflow to a certain extent, thereby greatly reducing the noise generated by upper airflow.

[0020] The blade main body 21 is provided with an upper arc concave structure 211, and the blade main body 21 is provided with a lower arc concave structure 212.

[0021] The utility model discloses a centrifugal fan impeller, including core disc 1, core disc 1 one side is provided with a plurality of blades 2, a plurality of blades 2 are annularly arranged, the spacing between adjacent blade 2 is same, the blade 2 is located the middle part of core disc 1 and is arranged as the air inlet 3, the blade 2 is located the outside of core disc 1 and is arranged as the air outlet 4, the blade 2 is by blade main body 21 and upper blocking portion 22, the blade main body 21 is located the upper portion of air inlet 3 one end and is provided with upper blocking portion 22, the blade main body 21 and upper blocking portion 22 are integrally formed structure, the blade main body 21 is arc structure, the upper blocking portion 22 is arc everted structure, and the upper blocking portion 22 of arc everted structure can guide the upper airflow to a certain extent, thereby greatly reducing the noise generated by upper airflow.

[0022] Finally, it should be noted that: the above only for preferred embodiment of the utility model has been described in detail, although the utility model is referred to the foregoing embodiment, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part technical feature. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A centrifugal fan impeller comprising a core disc (1), characterised in that: The core disc (1) is provided with a plurality of blades (2) on one side, the plurality of blades (2) are arranged in a ring shape, the spacing between adjacent blades (2) is the same, the blades (2) located in the middle of the core disc (1) are provided as air inlets (3), the blades (2) located outside the core disc (1) are provided as air outlets (4), the blades (2) are composed of a blade body (21) and an upper blocking portion (22), and the blade body (21) is provided with the upper blocking portion (22) on the upper portion of one end of the air inlet (3).

2. A centrifugal fan impeller according to claim 1, characterised in that: The blade body (21) is in an arc shape, and the upper blocking portion (22) is in an arc outward turning structure.

3. A centrifugal fan impeller according to claim 1, wherein: The blade body (21) is provided with an upper arc concave structure (211) on the upper portion, and is provided with a lower arc concave structure (212) on the lower portion, and the direction of the upper arc concave structure (211) is opposite to that of the lower arc concave structure (212).

4. A centrifugal fan impeller according to claim 1, 2 or 3, characterised in that: The blade body (21) and the upper blocking portion (22) are in an integral forming structure.

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