Composite turbofan centrifugal impeller

Abstract

The utility model belongs to the technical field of fan impellers, and particularly relates to a combined type turbofan centrifugal impeller which comprises a motor shaft installation part located in the center and at least one wind scooper body which surrounds the motor shaft installation part and is concentrically arranged, the wind scooper body is a spherical cover body, and blades are arranged in each wind scooper body in a circumferential array mode. Centrifugal airflow is guided into axial airflow through the wind scooper sheets and the blades, and the included angle between the blades and the radial plane where the wind scooper body is located ranges from 25 degrees to 35 degrees. And the blades are subjected to angle design and radian design to improve the wind section, so that the air volume is improved, and the energy consumption of the impeller is lower under the condition of the same air volume.

Description

Technical Field

[0001] The utility model belongs to the technical field of fan impellers, and particularly relates to a composite turbofan centrifugal impeller. Background Art

[0002] Common fans are roughly divided into two types based on the direction of gas flow, namely centrifugal fans and axial fans, and each has its own advantages and disadvantages;

[0003] In order to optimize the existing structure, the applicant has previously applied for a plate impeller with the publication number CN218062786U. The plate impeller includes a motor shaft mounting member located at the center and at least one air guide cover body arranged concentrically around the motor shaft mounting member. An axial through hole is opened at the center of the air guide cover body for the motor shaft to pass through and for air to enter. A plurality of blades are evenly arranged in each air guide cover body, and an air inlet is formed between adjacent blades. The air inlet is used to connect the axial through hole with the blades, and the centrifugal airflow is guided into an axial airflow through the air guide cover body. The utility model provides a plate impeller, which adopts a centrifugal impeller to realize axial flow in and out. The essence of the utility model is to add an air guide cover body on the basis of the centrifugal impeller, and guide the centrifugal airflow into an axial airflow through the air guide cover body to realize axial air discharge. That is, the gas flow mode of the axial flow fan is realized by adopting an axial flow casing and a centrifugal impeller, and the advantages of the centrifugal fan and the axial flow fan are combined to make the best use of their strengths and avoid their weaknesses, that is, to facilitate installation and increase the wind pressure and wind speed.

[0004] However, in the subsequent research process, the applicant applied for a patent for a direct-feed centrifugal impeller with application number 2024200947886, but it still has defects. Its wind section is small, which may affect the air volume. Utility Model Content

[0005] The utility model provides a composite turbofan centrifugal impeller, which can solve the problems pointed out in the background technology.

[0006] A composite turbofan centrifugal impeller comprises a motor shaft mounting member located at the center and at least one air guide cover body arranged around the motor shaft mounting member and concentrically therewith. The air guide cover body is a spherical cover body, and each air guide cover body has a circumferential array of blades. The centrifugal airflow is guided into an axial airflow by the air guide cover body and the blades, and the angle between the blades and the radial plane where the air guide cover body is located is between 25 and 35 degrees.

[0007] Preferably, the blade is an arc-shaped blade with an arc angle between 30 and 50 degrees.

[0008] Beneficial effects: The utility model provides a composite turbofan centrifugal impeller, which adopts a centrifugal impeller to realize axial flow in and out of the wind, sets a spherical wind guide cover, and designs the angle and curvature of the blades to increase the wind section, thereby increasing the air volume. Under the same air volume conditions, this impeller has lower energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the structure of the utility model.

[0010] Figure 2 This is a schematic diagram of the angle and arc of the utility model.

[0011] Description of reference numerals:

[0012] Reference numerals in the figure: motor shaft mounting 1; air guide cover 2; blade 3. DETAILED DESCRIPTION

[0013] A specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0014] Example 1: Figure 1-2 As shown, a composite turbofan centrifugal impeller includes a motor shaft mounting part 1 located at the center and at least one air guide cover 2 arranged around the motor shaft mounting part 1 and concentrically. The air guide cover 2 is a spherical cover. Each air guide cover 2 has a circumferential array of blades 3. The centrifugal airflow is guided into an axial airflow by the air guide cover 2 and the blades 3. The angle between the blades 3 and the radial plane where the air guide cover 2 is located is between 25 and 35 degrees.

[0015] In some embodiments, the blade 3 is an arc-shaped blade with an arc angle between 30 and 50 degrees.

[0016] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A composite turbofan centrifugal impeller, characterized by: The invention comprises a motor shaft mounting part (1) located at the center and at least one air guide cover (2) arranged around the motor shaft mounting part (1) and concentrically. The air guide cover (2) is a spherical cover. Each air guide cover (2) has a circumferential array of blades (3). Centrifugal airflow is converted into axial airflow through the air guide cover (2) and the blades (3). The angle between the blades (3) and the radial plane where the air guide cover (2) is located is between 25 and 35 degrees. The blades (3) are arc-shaped blades with an arc angle between 30 and 50 degrees.

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