Inner rotor axial flow fan

Abstract

The utility model relates to an inner rotor axial flow fan which comprises an installation cover body, an inner rotor motor, fan blades and a frame body, the fan blades are installed on one side of the inner rotor motor, the side, away from the fan blades, of the inner rotor motor is an installation face, the installation face is installed on the installation cover body, and the disassembly direction of the inner rotor motor is the direction close to the side of the fan blades. And the frame body is mounted on the mounting cover body and covers the inner rotor motor and the fan blades. The dismounting device has the effect of improving the dismounting efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of grinding equipment, and in particular to an inner rotor axial flow fan. Background Art

[0002] Fans are household appliances commonly used to cool down in the summer. During the disassembly process of existing fans, the blades need to be removed from the motor shaft first, and then the motor needs to be removed from the mounting cover. This disassembly method is relatively cumbersome and results in low disassembly efficiency. Utility Model Content

[0003] In order to improve the efficiency of disassembly, the present application provides an inner rotor axial flow fan.

[0004] The inner rotor axial flow fan provided in the present application adopts the following technical solution:

[0005] An inner rotor axial flow fan comprises a mounting cover, an inner rotor motor, fan blades and a frame, wherein the fan blades are mounted on one side of the inner rotor motor, a side of the inner rotor motor away from the fan blades is a mounting surface, the mounting surface is mounted on the mounting cover, a disassembly direction of the inner rotor motor is a direction close to the fan blade side, and the frame is mounted on the mounting cover and covers the inner rotor motor and the fan blades.

[0006] By adopting the above technical solution, the fan blades are directly installed on the inner rotor motor, so that the fan blades and the inner rotor motor are integrated, and then the mounting surface of the inner rotor is installed on the mounting cover, which is covered by the frame; when disassembling, after taking down the mounting cover, the fan blades and the inner rotor motor can be directly removed from the mounting cover together, thereby improving the convenience of disassembly.

[0007] Optionally, a plurality of saw teeth are arranged around the edge of the fan blade.

[0008] By adopting the above technical solution, a plurality of saw teeth are arranged around the edge of the fan blade. During the rotation process, the saw teeth can break up the vortex edge at the edge of the fan blade into smaller vortices, thereby reducing the noise generated when the fan blade rotates.

[0009] Optionally, a protective net is provided on a side of the frame away from the mounting cover.

[0010] By adopting the above technical solution, a protective net is arranged on the frame, thereby improving the safety performance of the fan during operation.

[0011] Optionally, the installation cover is provided with a plurality of support frames, and the plurality of support frames are arranged in a circle around the axis direction of the fan blade, and the support frames are provided with connecting pieces for connecting with the frame.

[0012] By adopting the above technical solution, a plurality of supporting frames are arranged on the installation cover to improve the overall strength of the installation cover, so that the installation cover can bear the weight of the internal rotating motor and the fan blades.

[0013] Optionally, a mounting portion is disposed around the outer side surface of the frame, a mounting rod is disposed on the side of the connecting piece close to the frame, and the mounting portion is provided with a mounting hole for the mounting rod to be clamped.

[0014] By adopting the above technical solution, a mounting rod is provided on the connecting piece. When the mounting cover is installed, the mounting rod is clamped in the mounting hole, thereby positioning the mounting cover to improve the stability of the installation.

[0015] Optionally, one end of the mounting rod away from the connecting piece is slidably connected to a hooking block, the hooking block is used to hook the mounting portion, and the supporting frame is provided with a driving member for driving the hooking block to slide.

[0016] By adopting the above technical solution, a hook block is provided on the mounting rod. When the hook block is clamped in the mounting hole, the hook block is driven to slide by the driving member, so that the hook block protrudes from the side of the mounting rod to limit the mounting rod, thereby realizing the installation of the mounting cover.

[0017] Optionally, two mounting rods are provided on each of the connecting pieces, and the hooking blocks on the two mounting rods are symmetrically arranged.

[0018] By adopting the above technical solution, two mounting rods are provided, and the hooking blocks on the two mounting rods are symmetrically arranged, thereby improving the stability of the installation of the connecting piece.

[0019] Optionally, the driving member is a first connecting rope, and a mounting frame is provided between several of the supporting frames. The mounting frame is rotatably connected to a rotating rod, one end of the first connecting rope is connected to a hooking block, and the other end of the first connecting rope is connected to the rotating rod, and the mounting rod is provided with an elastic member that forces the hooking block to protrude from the surface of the mounting rod.

[0020] By adopting the above technical solution, the first connecting rope can be pulled by rotating the rotating rod, thereby forcing the hooking blocks to move in directions approaching each other, thereby improving the convenience of disassembly.

[0021] In summary, the utility model has the following beneficial effects:

[0022] 1. The fan blades are directly mounted on the inner rotor motor, so that the fan blades and the inner rotor motor are integrated, and then the mounting surface of the inner rotor is mounted on the mounting cover, which is covered by the frame; when disassembling, after taking down the mounting cover, the fan blades and the inner rotor motor can be directly removed from the mounting cover together, thereby improving the convenience of disassembly;

[0023] 2. There are several saw teeth around the edge of the fan blade. During the rotation process, the saw teeth can break up the eddy current at the edge of the fan blade into smaller eddies, thereby reducing the noise generated when the fan blade rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of Example 1;

[0025] Figure 2 is a schematic diagram of the connection between the inner rotor motor and the fan blades in Example 1;

[0026] Figure 3 is a schematic diagram of the structure of the fan blade in Example 1;

[0027] Figure 4 is a schematic structural diagram of Example 2;

[0028] Figure 5 is a schematic diagram of the connection between the cover body and the frame body in embodiment 2;

[0029] Figure 6 yes Figure 5 A magnified schematic diagram of center A.

[0030] In the figure, 1. mounting cover; 11. clamping hole; 12. connecting piece; 13. mounting rod; 14. first sliding groove; 15. second sliding groove; 2. frame; 21. mounting hole; 22. mounting part; 3. inner rotor motor; 31. fan blade; 32. sawtooth; 33. clamping part; 4. supporting frame; 41. supporting rod; 42. mounting frame; 43. rotating rod; 44. first connecting rope; 45. second connecting rope; 46. connecting rod; 47. hooking block; 48. spring; 49. guide block. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-6 This application is described in further detail.

[0032] Embodiment 1:

[0033] Example 1 discloses an inner rotor axial flow fan, referring to Figure 1 and Figure 2 , including a mounting cover 1, an inner rotor motor 3, a fan blade 31 and a frame 2. The mounting cover 1 and the frame 2 are spliced ​​and mounted to each other, and the two form a chamber for mounting the inner rotor motor 3 and the fan blade 31. The fan blade 31 is fixedly mounted on one side of the inner rotor motor 3. The side of the inner rotor motor 3 away from the fan blade 31 is a mounting surface, and a bolt hole is provided on the mounting cover 1. The bolt is penetrated through the mounting cover 1 and threadedly connected to the threaded hole, so that the mounting cover 1 and the inner rotor motor 3 can be fixed.

[0034] Reference Figure 1 and Figure 2 The mounting surface is provided with a clamping portion 33, and the clamping portion 33 is used to be clamped in the clamping hole 11 on the mounting cover 1 to position the inner rotor motor 3.

[0035] Reference Figure 1 and Figure 3 The edge of the fan blade 31 is surrounded by a plurality of saw teeth 32. During the rotation process, the saw teeth 32 can break up the eddy current at the edge of the fan blade 31 into smaller eddy currents, thereby reducing the noise generated when the fan blade 31 rotates. The frame 2 is provided with an air outlet on the side away from the mounting cover 1. The frame 2 is provided with a protective net covering the air outlet, thereby improving the safety performance of the fan during operation.

[0036] Reference Figure 1 The mounting cover 1 is fixedly connected with a plurality of support frames 4, which are arranged in a circle around the axis direction of the fan blade 31. The support frames 4 include two support rods 41, which are arranged opposite to each other. A connecting piece 12 is fixedly connected between the two support rods 41. A mounting portion 22 is arranged around the outer side of the frame 2, and the connecting piece 12 is used for fixed installation with the mounting portion 22. When the mounting cover 1 and the frame 2 are installed, a pair of bolts is sequentially inserted through the connecting piece 12 and the mounting portion 22, thereby fixing the mounting cover 1 and the frame 2.

[0037] The implementation principle of Example 1 of the present application is as follows: the fan blades 31 are directly mounted on the inner rotor motor 3, so that the fan blades 31 and the inner rotor motor 3 are integrated, and then the mounting surface of the inner rotor is mounted on the mounting cover 1, which is covered by the frame 2; and when disassembling, after taking off the mounting cover 1, the fan blades 31 and the inner rotor motor 3 can be directly removed from the mounting cover 1 together, thereby improving the convenience of disassembly.

[0038] Embodiment 2:

[0039] The difference between Example 2 and Example 1 is that, referring to Figure 4 , Figure 5 and Figure 6 The side of the connecting piece 12 near the mounting portion 22 is fixedly connected with a mounting rod 13, and the two ends of the mounting rod 13 extend to the upper and lower sides of the connecting piece 12 respectively. The mounting portion 22 is provided with a mounting hole 21 for the mounting rod 13 to be clamped. One end of the mounting rod 13 near the mounting portion 22 is provided with a hooking block 47, and the hooking block 47 is used to hook the mounting portion 22.

[0040] Reference Figure 4 , Figure 5 and Figure 6There are two mounting rods 13 on each connecting piece 12, and the hooking blocks 47 on the two mounting rods 13 are symmetrically arranged.

[0041] Reference Figure 5 and Figure 6 The outer peripheral wall of the mounting rod 13 is provided with a first sliding groove 14 in the radial direction, and the hook block 47 is slidably connected to the first sliding groove 14. The interior of the mounting rod 13 is provided with a second sliding groove 15 connected to the first sliding groove 14 in the axial direction. One end of the mounting rod 13 is fixedly connected to a connecting rod 46, and the connecting rod 46 is slidably connected to the second sliding groove 15 in the radial direction of the mounting rod 13. The mounting rod 13 is provided with an elastic member forcing the hook block 47 to protrude from the surface of the mounting rod 13. The elastic member is a spring 48, and the spring 48 is located in the second sliding groove 15. One end of the spring 48 is fixedly connected to the groove wall of the second sliding groove 15, and the other end of the spring 48 is fixedly connected to the connecting rod 46.

[0042] Reference Figure 4 , Figure 5 and Figure 6 The support frame 4 is provided with a driving member for driving the hook block 47 to slide, the driving member is a first connecting rope 44, a second connecting rope 45 is fixedly connected between two connecting rods 46 on the two connecting plates 12, a mounting frame 42 is fixedly connected between several support frames 4, the mounting frame 42 is rotatably connected to a rotating rod 43, one end of the first connecting rope 44 is fixedly connected to the rotating rod 43, and the other end of the first connecting rope 44 is fixedly connected to the second connecting rope 45.

[0043] Reference Figure 5 and Figure 6 A guide block 49 is fixedly connected between the two support rods 41 of each support frame 4, and a plurality of guide blocks 49 are distributed along the extension direction of the support rods 41. The first connecting rope 44 is sequentially passed through the plurality of guide blocks 49.

[0044] The implementation principle of the second embodiment is: by rotating the rotating rod 43, the first connecting rope 44 can be pulled, thereby forcing the hooking blocks 47 to move in a direction close to each other, so as to improve the convenience of disassembly.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An inner rotor axial flow fan, Features: The invention comprises a mounting cover (1), an inner rotor motor (3), a fan blade (31) and a frame (2), wherein the fan blade (31) is mounted on one side of the inner rotor motor (3), a side of the inner rotor motor (3) away from the fan blade (31) is a mounting surface, the mounting surface is mounted on the mounting cover (1), the disassembly direction of the inner rotor motor (3) is a direction close to the side of the fan blade (31), and the frame (2) is mounted on the mounting cover (1) and covers the inner rotor motor (3) and the fan blade (31).

2. An inner rotor axial flow fan according to claim 1, Features: A plurality of saw teeth (32) are arranged around the edge of the fan blade (31).

3. The inner rotor axial flow fan according to claim 1, Features: A protective net is provided on the side of the frame (2) away from the mounting cover (1).

4. The inner rotor axial flow fan according to claim 1, Features: The installation cover (1) is provided with a plurality of support frames (4), the plurality of support frames (4) being arranged in a circle around the axis direction of the fan blade (31), and the support frames (4) being provided with connecting pieces (12) for connecting with the frame (2).

5. An inner rotor axial flow fan according to claim 4, Features: The outer side surface of the frame (2) is surrounded by a mounting portion (22), the side surface of the connecting piece (12) close to the frame (2) is provided with a mounting rod (13), and the mounting portion (22) is provided with a mounting hole (21) for the mounting rod (13) to be clamped.

6. An inner rotor axial flow fan according to claim 5, Features: One end of the mounting rod (13) away from the connecting piece (12) is slidably connected to a hooking block (47), the hooking block (47) being used to hook the mounting portion (22), and the supporting frame (4) is provided with a driving member for driving the hooking block (47) to slide.

7. An inner rotor axial flow fan according to claim 6, Features: Two mounting rods (13) are provided on each connecting piece (12), and the hooking blocks (47) on the two mounting rods (13) are symmetrically arranged.

8. An inner rotor axial flow fan according to claim 7, Features: The driving member is a first connecting rope (44), a mounting frame (42) is provided between a plurality of the supporting frames (4), the mounting frame (42) is rotatably connected to a rotating rod (43), one end of the first connecting rope (44) is connected to a hooking block (47), the other end of the first connecting rope (44) is connected to the rotating rod (43), and the mounting rod (13) is provided with an elastic member for forcing the hooking block (47) to protrude from the surface of the mounting rod (13).

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