Blade mounting structure of outer rotor axial flow fan

Abstract

The utility model discloses a blade mounting structure of an outer rotor axial flow fan, and relates to the technical field of outer rotor axial flow fans. The mounting frame is fixedly arranged at one end of the mounting cylinder; the motor is mounted on the mounting frame and located in the mounting cylinder, and a rotating shaft is a rotor column; the mounting plates are mounted on the circumferential outer wall of the rotor column, and mounting holes are formed in the surfaces of the mounting plates; the mounting shell covers one end, far away from the motor, of the rotor column, the mounting shell and the rotor column are mounted through a bolt, the mounting shell penetrates through the space between the two adjacent mounting plates, and the part, abutting against the rotor column, of the mounting shell is an extension part; the fan blades are located on the circumferential outer wall of the mounting shell and located between the extending parts, positioning holes are formed in the positions, right opposite to the mounting holes, of the surfaces of the fan blades, bolts penetrate through the positioning holes and then are in threaded connection with the mounting holes, and the mounting plate is attached to the fan blades; the protecting net is mounted at the other end of the mounting cylinder. The blade mounting structure has the effects that the blade mounting stability and firmness of the flow fan are improved, and then the working efficiency of the flow fan is improved.

Description

Technical Field

[0001] The present application relates to the technical field of outer rotor axial flow fans, and in particular to a blade mounting structure of an outer rotor axial flow fan. Background Art

[0002] External rotor axial flow fans are widely used in hotels, restaurants, industrial and mining enterprises, office buildings, cinemas and other construction facilities, and are also used as heat dissipation equipment for cold storage and other equipment. They have the characteristics of compact structure, easy installation, energy saving and high efficiency.

[0003] There are two main forms of blade installation for external rotor axial flow fans. One is that the blades are directly installed on the external rotor shaft of the motor, and the other is that multiple blades are integrally formed on a housing and then installed on the external rotor shaft of the motor. Regardless of the method, the larger the blade diameter, the higher the requirements for the blade's own strength and installation strength, and the requirements for the stability of the blade after installation will also increase. However, the existing installation structure is difficult to meet the above requirements when the blade diameter increases, which leads to the reduction of motor power under safety considerations. Utility Model Content

[0004] The purpose of the utility model of the present application is to improve the problem of poor firmness and stability of blade installation on an outer rotor axial flow fan. The present application provides a blade installation structure for an outer rotor axial flow fan.

[0005] The present application provides an outer rotor axial flow fan blade installation structure adopts the following technical solution:

[0006] An outer rotor axial flow fan blade mounting structure, comprising:

[0007] Install the barrel;

[0008] A mounting frame, fixedly mounted at one end of the mounting tube;

[0009] The motor is mounted on the mounting frame and is located in the mounting cylinder, and the rotating shaft is the rotor column;

[0010] There are multiple mounting plates, which are mounted on the circumferential outer wall of the rotor column, are equidistantly distributed around the circumference, are all inclined, and have mounting holes on the surface;

[0011] A mounting shell is arranged at an end of the rotor column away from the motor and is mounted on the rotor column by bolts. The portion of the mounting shell that passes between two adjacent mounting plates and abuts against the rotor column is an extension portion;

[0012] The fan blade is located on the circumferential outer wall of the mounting shell and between the extensions, and is integrally formed with the mounting shell. A positioning hole is provided on the surface facing the mounting hole, and a bolt is passed through and then threadedly connected with the mounting hole, and the mounting plate is fitted with the fan blade;

[0013] Protective net, installed at the other end of the installation tube.

[0014] Optionally, a plurality of side plates are fixedly provided on the circumferential outer wall of the rotor column, and the side plates abut against the side walls of the extension portion.

[0015] Optionally, a guard plate is fixedly provided on the side plate, and the guard plate abuts against an outer wall of the extension portion away from the rotor column.

[0016] Optionally, a same bottom plate is fixedly provided on two side plates between two adjacent mounting plates, and the end of the extension portion passes through between the bottom plate and the rotor column.

[0017] Optionally, a positioning groove is provided at an edge of one end of the rotor column away from the motor, and the positioning groove is located between the mounting plates;

[0018] A positioning plate is fixedly arranged on the circumferential inner wall of the mounting shell, and the positioning plate abuts against the positioning groove.

[0019] Optionally, a mounting groove is provided on the back side of the fan blade, and the mounting groove becomes deeper and deeper in the direction of rotation of the fan blade. The mounting plate is located in the mounting groove and abuts against the inner wall of the mounting groove.

[0020] Optionally, a sponge layer is adhered to the surface of the mounting plate.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] The integrally formed fan blades are reinforced by setting the mounting plate, thereby improving the connection strength and structural stability of the fan blades during rotation, thereby increasing the speed range of the fan and thus improving the air supply efficiency;

[0023] The extension part can be arranged to abut against the side plate, the bottom plate and the guard plate, thereby improving the stability of the installation of the extension part and the stability of the installation shell;

[0024] The setting of the mounting groove can apply pressure to the fan blades in the direction of rotation, further improving the stability and firmness of the fan blades during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0026] Figure 2 is a partial cross-sectional view showing the motor;

[0027] Figure 3 is a partial cross-sectional view showing the mounting plate;

[0028] Figure 4 It is a partial exploded section view showing the positioning plate.

[0029] In the figure, 1. mounting cylinder; 11. protective net; 2. mounting frame; 3. motor; 4. rotor column; 41. mounting plate; 411. mounting hole; 42. side plate; 421. protective plate; 422. bottom plate; 43. positioning groove; 5. mounting shell; 51. fan blade; 511. positioning hole; 512. mounting groove; 52. positioning plate; 53. extension part. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-4 This application is described in further detail.

[0031] The embodiment of the present application discloses a blade mounting structure for an outer rotor axial flow fan.

[0032] refer to Figure 1 and Figure 2 The outer rotor axial flow fan blade mounting structure includes a mounting tube 1, a mounting frame 2, a motor 3, a mounting shell 5 and a fan blade 51. The mounting frame 2 is fixedly mounted at one end of the mounting tube 1, the motor 3 is mounted on the mounting frame 2 and is located inside the mounting tube 1, and the rotating shaft of the motor 3 is the rotor column 4. There are multiple fan blades 51, which are located on the circumferential outer wall of the mounting shell 5 and are equidistantly distributed around the circumference. The fan blades 51 and the mounting shell 5 are integrally formed. The mounting shell 5 is covered at one end of the rotor column 4 away from the motor 3, and the mounting shell 5 is threadedly connected to the rotor column 4 after bolts are passed through to fasten the mounting shell 5 to the rotor column 4. A protective net 11 is installed at the other end of the mounting tube 1.

[0033] refer to Figure 3 and Figure 4 A mounting plate 41 is fixedly provided on the circumferential outer wall of the rotor column 4 at a position directly opposite to the fan blade 51, and the mounting plate 41 is arranged at an angle. A plurality of mounting holes 411 are provided on the surface of the mounting plate 41, and the mounting holes 411 are threaded holes. A positioning hole 511 is provided at a position directly opposite to the mounting hole 411 of the fan blade 51, and a bolt can pass through the positioning hole 511 and be threadedly connected with the mounting hole 411. A mounting groove 512 is provided on the back of the fan blade 51, and the mounting groove 512 becomes deeper and deeper in the rotation direction of the fan blade 51, and the mounting plate 41 is located in the mounting groove 512 and abuts against the inner wall of the mounting groove 512. A sponge layer is pasted on the surface of the mounting plate 41.

[0034] The portion of the mounting shell 5 that passes between two adjacent mounting plates 41 and abuts against the rotor column 4 is the extension portion 53, and the connection between the fan blades 51 and the extension portion 53 is thickened and transitionally arranged. A plurality of side plates 42 are fixedly provided on the circumferential outer wall of the rotor column 4, and the side plates 42 abut against the side walls of the extension portion 53. A guard plate 421 is fixedly provided on the side plate 42, and the guard plate 421 abuts against the outer wall of the extension portion 53 away from the rotor column 4. The same bottom plate 422 is fixedly provided on the two side plates 42 between the two adjacent mounting plates 41, and the end of the extension portion 53 passes between the bottom plate 422 and the rotor column 4. A positioning groove 43 is provided at the edge of the end of the rotor column 4 away from the motor 3, and the positioning groove 43 is located between the mounting plates 41. A positioning plate 52 is fixedly provided on the circumferential inner wall of the mounting shell 5, and the positioning plate 52 abuts against the positioning groove 43.

[0035] During the process of installing the shell 5 on the rotor column 4, the extension portion 53 is inserted into the position between the side plates 42. The guard plate 421 is used to improve the stability of the extension portion 53 during insertion, and the bottom plate 422 is used to further improve the protection of the extension portion 53. The extension portion 53 is used to improve the connection strength of the blade 51. The setting of the mounting plate 41 provides back support for the blade 51, and the stability of the blade 51 during rotation is improved by cooperating with the mounting groove 512, and the connection strength of the blade 51 is also improved, so that the rotation speed range of the blade 51 is increased, thereby improving the working efficiency of the blower. The positioning plate 52 is set to be tightly against the positioning groove 43, and then together with the extension portion 53, improves the firmness and stability of the installation of the mounting shell 5 and the rotor column 4.

[0036] The implementation principle of the outer rotor axial flow fan blade mounting structure of the present application embodiment is: the fan blade 51 integrated with the mounting shell 5 is additionally fixed and reinforced by mounting the mounting plate 41 and the fan blade 51, thereby improving the torque resistance of the fan blade 51 during rotation, increasing the maximum speed that the fan blade 51 can bear, and thereby improving the working efficiency of the fan. At the same time, the mounting strength and stability of the mounting shell 5 are improved by the positioning plate 52 and the extension plate, providing a guarantee for the stable rotation of the fan blade 51.

[0037] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An outer rotor axial flow fan blade mounting structure, characterized in that: include Installing the cylinder (1); A mounting frame (2) is fixedly mounted on one end of the mounting tube (1); The motor (3) is mounted on the mounting frame (2) and is located in the mounting tube (1), and the rotating shaft is the rotor column (4); There are multiple mounting plates (41), which are mounted on the circumferential outer wall of the rotor column (4), are equidistantly distributed around the circumference, are all inclined, and have mounting holes (411) on their surfaces; A mounting shell (5) is arranged on an end of the rotor column (4) away from the motor (3) and is mounted on the rotor column (4) by means of bolts; the portion of the mounting shell (5) that passes between two adjacent mounting plates (41) and abuts against the rotor column (4) is an extension portion (53); The fan blade (51) is located on the circumferential outer wall of the mounting shell (5) and between the extension portions (53), and is integrally formed with the mounting shell (5). A positioning hole (511) is provided on the surface of the fan blade at a position directly opposite to the mounting hole (411), and a bolt is passed through the fan blade to be threadedly connected to the mounting hole (411). The mounting plate (41) fits the fan blade (51). The protective net (11) is installed at the other end of the installation tube (1).

2. The outer rotor axial flow fan blade mounting structure according to claim 1, characterized in that: A plurality of side plates (42) are fixedly arranged on the circumferential outer wall of the rotor column (4), and the side plates (42) are in contact with the side walls of the extension portion (53).

3. The outer rotor axial flow fan blade mounting structure according to claim 2, characterized in that: A guard plate (421) is fixedly provided on the side plate (42), and the guard plate (421) abuts against an outer wall of the extension portion (53) away from the rotor column (4).

4. The outer rotor axial flow fan blade mounting structure according to claim 2, characterized in that: The same bottom plate (422) is fixedly arranged on the two side plates (42) between two adjacent mounting plates (41), and the end of the extension portion (53) passes through between the bottom plate (422) and the rotor column (4).

5. The outer rotor axial flow fan blade mounting structure according to claim 1, characterized in that: A positioning groove (43) is provided at an edge of one end of the rotor column (4) away from the motor (3), and the positioning groove (43) is located between the mounting plates (41); A positioning plate (52) is fixedly provided on the circumferential inner wall of the mounting shell (5), and the positioning plate (52) abuts against the positioning groove (43).

6. The outer rotor axial flow fan blade mounting structure according to claim 1, characterized in that: A mounting groove (512) is provided on the back of the fan blade (51), and the mounting groove (512) becomes deeper and deeper in the rotation direction of the fan blade (51), and the mounting plate (41) is located in the mounting groove (512) and abuts against the inner side wall of the mounting groove (512).

7. The outer rotor axial flow fan blade mounting structure according to claim 6, characterized in that: A sponge layer is pasted on the surface of the mounting plate (41).

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