Electric fan assembly

Abstract

The utility model belongs to the technical field of harvester fans, and particularly discloses an electric fan assembly which comprises a fan, an electric motor, a side support and an outer support, the fan comprises a shaft body and blades, the blades are installed and connected to the shaft body, the shaft body is rotationally connected to the side support, and the outer support is fixedly connected to the side support. The electric motor is installed and connected to the outer support and coaxially connected to the shaft body in a driving mode, the shaft body is directly driven by the electric motor to rotate, so that the blades are driven to rotate to generate wind power, the wind power can be provided for a cleaning system, the response speed is high, electric and efficient operation of the draught fan is achieved, the energy utilization efficiency is improved, and the operation cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of harvester fan technology, specifically relating to an electric fan assembly. Background Technology

[0002] In existing technologies, traditional harvester blowers typically use hydraulic drives. Hydraulic drives are prone to leakage problems. Hydraulic systems rely on hydraulic oil to transmit power, and leaks can occur in pipes, joints, and seals. Once a leak occurs, it not only reduces system pressure, affecting driving performance, but also pollutes the working environment and poses safety hazards, such as the possibility of the hydraulic oil igniting upon contact with an open flame. Secondly, hydraulic oil is temperature-sensitive, and its performance is affected by temperature. At low temperatures, the viscosity of the hydraulic oil increases, leading to poor flow and slower system response; at high temperatures, the viscosity decreases, potentially causing leaks and accelerating oxidation and deterioration, shortening its lifespan. Furthermore, hydraulic systems are relatively expensive. Hydraulic components, including hydraulic pumps, cylinders, and valves, are costly, and the installation and commissioning of the system require specialized technicians, all of which increase the overall cost of the equipment. Finally, hydraulic systems experience various pressure and volumetric losses (such as hydraulic oil leaks and internal leaks within hydraulic components) during energy conversion and transmission, resulting in significant energy loss and relatively low efficiency. Utility Model Content

[0003] To address the issues of insufficient efficiency and cost reduction in existing fan technologies, an electric fan assembly is proposed. This utility model provides the following technical solution:

[0004] An electric fan assembly includes a fan, an electric motor, a side bracket, and an outer bracket. The fan includes a shaft and blades. The blades are mounted on the shaft. The shaft is rotatably connected to the side bracket. The outer bracket is fixedly connected to the side bracket. The electric motor is mounted on the outer bracket and coaxially driven by the shaft.

[0005] Preferably, the outer bracket is U-shaped and its opening faces one side of the side bracket, and the electric motor is installed between the side bracket and the outer bracket.

[0006] Preferably, the outer bracket is plate-shaped, with both ends extending radially toward the shaft and back to each other to form a mounting portion.

[0007] Preferably, the side bracket is plate-shaped and has a mounting hole in the middle, in which a bearing assembly is installed, and the shaft is mounted on the side bracket through the bearing assembly.

[0008] Preferably, the mounting portion of the outer bracket is in contact with the side bracket surface and is detachably connected by bolts.

[0009] Preferably, the fan further includes a blade plate, which is fixedly connected to the shaft, and the blade plate is provided with fixing parts for fixing the blades at equal intervals in the circumferential direction.

[0010] Preferably, the fan further includes a blade inserter, and multiple blade inserters are provided to form a blade inserter group. The blade inserters are provided on both sides of the blade inserter group, and the blades are inserted into the blade inserters.

[0011] Preferably, the side supports are symmetrically arranged at both ends of the shaft.

[0012] Preferably, the shaft is located at the center of the side support, and the length of the side support is greater than the outer diameter of the fan.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The shaft is directly driven to rotate by an electric motor, enabling the fan to operate electrically and efficiently;

[0015] 2. The U-shaped external bracket design optimizes the installation space of the electric motor, making the entire assembly structure more compact;

[0016] 3. The design of the boom and insert plate enhances the structural strength of the shaft and achieves stable fixation of the blades. At the same time, the symmetrical arrangement of the side supports also improves the overall stability and balance. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural schematic diagram of the present invention;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a three-dimensional structural schematic diagram of the present invention;

[0020] In the attached diagram, 1 is the fan; 11 is the shaft; 12 is the blade; 13 is the flange; 14 is the insert plate; 2 is the side support; 21 is the shaped hole; 3 is the outer support; 31 is the mounting part; 4 is the electric motor; and 5 is the bearing assembly. Detailed Implementation

[0021] The directional terms mentioned in the following embodiments, such as "up", "down", "left", and "right", are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustration and not for limiting the invention of this utility model.

[0022] like Figure 1-3As shown, an electric fan assembly includes a fan 1, an electric motor 4, a side bracket 2, and an outer bracket 3. The fan 1 includes a shaft 11 and blades 12. The blades 12 are mounted on the shaft 11. The shaft 11 is rotatably connected to the side bracket 2. The outer bracket 3 is fixedly connected to the side bracket 2. The electric motor 4 is mounted on the outer bracket 3 and coaxially driven to the shaft 11. The electric motor 4 directly drives the shaft 11 to rotate, thereby driving the blades 12 to rotate and generate wind power. It can provide wind power for the cleaning system, with a fast response speed, realizing the electrification and high-efficiency operation of the fan 1, improving energy utilization efficiency, and reducing operating costs.

[0023] Furthermore, the outer bracket 3 is U-shaped, and its opening faces one side of the side bracket 2. The electric motor 4 is installed between the side bracket 2 and the outer bracket 3, providing a stable support structure and optimizing the installation space of the electric motor 4, making the entire assembly structure more compact and easier to install and maintain.

[0024] Furthermore, the outer bracket 3 is plate-shaped, with both ends extending radially toward the shaft 11 and back to each other to form mounting parts 31, which enhances the strength and stability of the structure. At the same time, the mounting parts 31 facilitate fixed connection with the external structure, improving the installation convenience and stability of the assembly.

[0025] Furthermore, the side bracket 2 is plate-shaped with a mounting hole in the middle. A bearing assembly 5 is installed in the mounting hole, and the shaft 11 is mounted on the side bracket 2 via the bearing assembly 5. The mounting part 31 of the outer bracket 3 is in surface contact with the side bracket 2 and is detachably connected by bolts. This design is simple, low-cost, and has high structural strength. The surface contact increases the connection area, improving the stability and reliability of the connection. Simultaneously, the detachable bolt connection design facilitates disassembly and maintenance of the assembly, reducing maintenance costs. Furthermore, the side bracket 2 has a shaped hole 21, which can be used to reduce weight.

[0026] Furthermore, the fan 1 also includes a flange 13, which is fixedly connected to the shaft 11. The flange 13 is provided with fixing parts for fixing the blades 12 at equal intervals in the circumferential direction, which enhances the structural strength of the shaft 11 and also achieves stable fixing of the blades 12 through the fixing parts, thereby improving the overall stability and operating efficiency of the fan 1.

[0027] Furthermore, the fan 1 also includes a mounting plate 14, and multiple flanges 13 are provided to form a flange group. The mounting plate 14 is provided on both sides of the flange group, and the blades 12 are inserted into the mounting plate 14, which can play a good positioning and fixing effect, making the installation of the blades 12 more convenient and stable. At the same time, the flange group also improves the structural strength and wind power output efficiency of the fan 1.

[0028] Furthermore, the side brackets 2 are symmetrically arranged at both ends of the shaft 11, which improves the structural symmetry of the assembly, enhances the overall stability and balance, and reduces vibration and noise during operation.

[0029] Furthermore, the shaft 11 is located at the center of the side bracket 2, so that the shaft 11 can be stably supported on the side bracket 2. The length of the side bracket 2 is greater than the outer diameter of the fan 1, providing sufficient installation space and stability, and ensuring the normal operation and safety of the fan 1.

Claims

1. An electric fan assembly, characterized in that, The device includes a fan (1), an electric motor (4), a side bracket (2), and an outer bracket (3). The fan (1) includes a shaft (11) and blades (12). The blades (12) are mounted on the shaft (11). The shaft (11) is rotatably connected to the side bracket (2). The outer bracket (3) is fixedly connected to the side bracket (2). The electric motor (4) is mounted on the outer bracket (3) and coaxially driven to the shaft (11).

2. The electric fan assembly according to claim 1, characterized in that, The outer bracket (3) is U-shaped and its opening faces the side bracket (2). The electric motor (4) is installed between the side bracket (2) and the outer bracket (3).

3. The electric fan assembly according to claim 2, characterized in that, The outer bracket (3) is plate-shaped, with both ends extending radially toward the shaft (11) and back to each other to form a mounting part (31).

4. The electric fan assembly according to claim 3, characterized in that, The side bracket (2) is plate-shaped and has a mounting hole in the middle. A bearing assembly (5) is installed in the mounting hole, and the shaft (11) is installed on the side bracket (2) through the bearing assembly (5).

5. The electric fan assembly according to claim 4, characterized in that, The mounting part (31) of the outer bracket (3) is in contact with the side bracket (2) and is detachably connected by bolts.

6. The electric fan assembly according to claim 1, characterized in that, The fan (1) also includes a flange (13), which is fixedly connected to the shaft (11), and the flange (13) is provided with fixing parts for fixing blades (12) at equal intervals in the circumferential direction.

7. The electric fan assembly according to claim 6, characterized in that, The fan (1) also includes a plug plate (14), and multiple flanges (13) are provided to form a flange group. The plug plate (14) is provided on both sides of the flange group, and the blades (12) are plugged into the plug plate (14).

8. The electric fan assembly according to claim 1, characterized in that, The side supports (2) are symmetrically arranged at both ends of the shaft (11).

9. The electric fan assembly according to claim 1, characterized in that, The shaft (11) is located at the center of the side support (2), and the length of the side support (2) is greater than the outer diameter of the fan (1).

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