一种轴流风机连接器启动减压装置

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By setting an air inlet pressure reduction groove and a movable ring on the air inlet duct of the axial flow fan, and using a rotary control mechanism to adjust the air volume, the problem of high motor load in the prior art is solved, the stability and energy efficiency of the device are improved, and a convenient maintenance method is provided.

CN224515478UActive Publication Date: 2026-07-17江苏恒康机电有限公司

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: 江苏恒康机电有限公司
Filing Date: 2025-08-27
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

The pressure reducing device of the existing axial flow fan connector controls the air volume by rotating the baffle, which requires two sets of motors to work together. This results in the baffle connecting bearing being subjected to a large load, which can easily damage the motor and affect the service life and stability of the device.

Method used

An air inlet pressure reduction groove and a movable ring are installed on the air inlet duct. The air intake volume is adjusted by rotating the movable ring. A set of rotation control mechanisms is used to adjust the air volume, reducing the use of motors. A protective net is used to filter and protect the airflow.

Benefits of technology

It achieves stable airflow adjustment, reduces motor load, improves the stability and energy efficiency of the device, and facilitates maintenance.

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Abstract

本实用新型涉及轴流风机技术领域，具体为一种轴流风机连接器启动减压装置，包括轴流风机主体、进风筒和连接器，轴流风机主体的左端通过连接器和进风筒相连接，所述进风筒的表面开设有进风降压槽，且进风降压槽以进风筒的中心为圆心呈上下对称状分布，并且进风降压槽的外侧设置有活动环，活动环设置在进风筒的外侧和进风筒之间构成转动连接，且活动环的表面开设有安装槽。该轴流风机连接器启动减压装置通过在进风筒上开设进风降压槽实现降压效果，且进风降压槽外侧设置有活动环，通过活动环的旋转调整活动环上安装槽和进风降压槽的重合位置，实现对风量的调整，且活动环为环形旋转，不会受气流压力旋转，使用更稳定。

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Claims

1. An axial flow fan connector start-up pressure reduction device, comprising an axial flow fan body (1), an air inlet duct (2) and a connector (3), wherein the left end of the axial flow fan body (1) is connected to the air inlet duct (2) through the connector (3); characterized in that The surface of the air inlet duct (2) is provided with an air inlet pressure reduction groove (5), and the air inlet pressure reduction groove (5) is distributed symmetrically up and down with the center of the air inlet duct (2) as the center. A movable ring (6) is provided on the outside of the air inlet pressure reduction groove (5). The movable ring (6) is provided on the outside of the air inlet duct (2) and forms a rotatable connection with the air inlet duct (2). An installation groove (9) is provided on the surface of the movable ring (6). The air intake of the air inlet pressure reduction groove (5) is controlled by adjusting the overlap between the installation groove (9) and the air inlet pressure reduction groove (5). A rotation control mechanism is provided on the outside of the movable ring (6) to provide rotation power for the movable ring (6).

2. A kind of axial flow fan connector starting pressure reducing device according to claim 1, with the characteristics that: The left end of the air inlet duct (2) is connected to a protective cover (4), and the surface of the protective cover (4) is provided with a through groove, and the protective cover (4) and the air inlet duct (2) are connected by a thread.

3. A reduced voltage starting device for an axial fan connector as defined in claim 1, characterized in that: The surface of the air inlet duct (2) is provided with an annular positioning groove (7). The positioning groove (7) is designed with a concave structure on the surface of the air inlet duct (2). The movable ring (6) is located outside the positioning groove (7) and is slidably connected to the positioning groove (7). The inner wall of the movable ring (6) is uniformly provided with balls (8) to assist the sliding of the movable ring (6).

4. A kind of axial flow fan connector starting pressure reducing device according to claim 1 or 3, with the characteristics that: The rotation control mechanism includes a transmission gear ring (10), a meshing gear (11), and a motor (12). The transmission gear ring (10) is fixed on the outside of the movable ring (6) to control the rotation of the movable ring (6); The meshing gear (11) is disposed on the outside of the transmission gear ring (10) and forms a meshing connection between the transmission gear ring (10); The motor (12) is installed on the surface of the air inlet duct (2). The output end of the motor (12) is connected to the meshing gear (11) to control the rotation of the meshing gear (11).

5. A reduced voltage starting device for an axial fan connector as defined in claim 1, wherein: The mounting slot (9) is equipped with a protective mechanism to filter and protect the opening of the mounting slot (9).

6. The axial flow fan connector start-up pressure reducing device according to claim 5, characterized in that: The protective mechanism includes a protective net (13) and a mounting frame (14). The protective net (13) is nested inside the mounting groove (9), and the mounting frame (14) is fixed on the outside of the protective net (13). The mounting frame (14) is located on the outside of the movable ring (6), and the mounting frame (14) and the movable ring (6) are designed to be detachable.

7. A variable speed drive for a centrifugal fan according to claim 6, wherein: An attraction block (15) is fixed to the outside of the mounting frame (14), and a magnetic block (16) is embedded in the surface of the movable ring (6). The magnetic block (16) and the attraction block (15) are arranged correspondingly, and the magnetic block (16) and the attraction block (15) attract each other to position the mounting frame (14).