A high speed axial flow fan of split wing type

Abstract

The utility model belongs to fan technical field, concretely is a kind of high-speed axial flow fan of wing type of section, including current collector, shell, guide vane, impeller, flow guide cover, shaft end disc, motor and fastener;The motor is connected in shell by support;The guide vane is connected with motor;The impeller is connected with the output shaft of motor using key;The shaft end disc is installed on the impeller;The flow guide cover is installed on the impeller;The current collector is connected with the shell by the fastener;The shell is section structure, and the section structure is used to realize the exposed installation of the impeller;Compared with prior art, the utility model can solve the problem that impeller and motor shaft are not concentric when worker installs impeller;Sectional structure can realize impeller bare installation, improve the installation efficiency of worker.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a split airfoil-shaped high-speed axial flow fan. Background Technology

[0002] Axial flow fans, as a type of fluid machinery that relies on impeller rotation to drive airflow along the axial direction, are widely used in various fields. For high-speed axial flow fans, the radial clearance between the impeller and the casing is a key parameter affecting its aerodynamic performance and operational stability: provided that the processing accuracy and assembly accuracy can be guaranteed, the smaller the radial clearance, the less leakage of airflow inside the fan.

[0003] However, the assembly process of the impeller, guide vanes, and casing in the existing structural design of high-speed axial flow fans presents significant challenges, making it difficult to balance small clearance design with efficient installation: Most existing fan casings are integral, non-separable structures. When installing the impeller, it must be axially inserted into the casing from one end before connecting to the motor shaft. However, the internal space of an integral casing is closed and its dimensions are fixed. During insertion, the impeller is prone to collisions or interference with the inner wall of the casing, increasing the risk of impeller surface damage and significantly increasing the difficulty of aligning the impeller with the motor shaft. In summary, the existing high-speed axial flow fan has difficulties in installing the impeller and guide vanes due to its integral shell design. It is difficult to ensure the concentricity of the impeller motor shaft and the small clearance fit of the impeller shell, and it also significantly reduces the assembly efficiency. There is an urgent need for a structural design solution that can solve the above contradictions and achieve a combination of high-precision assembly and efficient installation. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by developing a split airfoil-shaped high-speed axial flow fan, which solves the problem of misalignment between the impeller and motor shaft during impeller installation. The split structure allows for bare impeller installation, improving installation efficiency for workers.

[0005] The technical solution of this utility model to solve the technical problem is as follows: a split airfoil-shaped high-speed axial flow fan, including a collector, a housing, guide vanes, an impeller, a guide shroud, a shaft end disc, a motor, and fasteners; the motor is connected to the housing via a bracket; the guide vanes are connected to the motor; the impeller is connected to the output shaft of the motor by a key; the shaft end disc is mounted on the impeller; the guide shroud is mounted on the impeller; the collector is connected to the housing via the fasteners; the housing is a split structure, and the split structure is used to achieve exposed installation of the impeller.

[0006] Preferably, the fastener is a bolt, and the bolt is a fully threaded bolt with a lock washer.

[0007] Preferably, the shaft end disc is connected to the impeller by welding or by the fastener.

[0008] Preferably, the flow guide is detachably connected to the impeller via the fastener.

[0009] Preferably, the split structure of the housing is used to avoid interference between the impeller and the housing during the installation process, so as to ensure the concentricity of the impeller and the motor shaft.

[0010] Preferably, the guide vane array is configured such that multiple guide vanes are evenly distributed along the circumference of the motor, and each guide vane is connected to the motor.

[0011] Preferably, the guide vane has an airfoil-shaped cross-section structure.

[0012] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects: 1. One of the core innovations of this solution is the adoption of a split structure design, which directly solves the installation pain points of existing integral housings. This split structure allows for exposed impeller installation, eliminating the need to insert the impeller axially into the housing as in traditional integral housings. Workers can directly align and connect the impeller while the housing is split, completely avoiding the risk of collision or interference between the impeller and the inner wall of the housing. At the same time, the exposed installation makes the connection process between the impeller and the motor shaft more intuitive, reducing the time cost of repeated adjustments and significantly improving the installation efficiency of workers. 2. This solution can solve the problem of misalignment between the impeller and the motor shaft when workers install the impeller. On the one hand, the exposed installation caused by the split structure allows workers to accurately adjust the alignment of the impeller and the motor shaft, avoiding concentricity deviations caused by limited installation angle and narrow operating space. On the other hand, the precise guarantee of concentricity can avoid eccentric vibration during impeller operation, thus eliminating the need to deliberately increase the radial clearance between the impeller and the casing to avoid friction. Ultimately, this reduces airflow leakage, improves the aerodynamic efficiency of the fan, and ensures stability and performance during high-speed operation. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention; Figure 2 This is the left view of the present invention; Figure 3 This is the right view of the present invention; Figure 4 The overall structure of this utility model Figure 1 ; Figure 5 The overall structure of this utility model Figure 2 ; Figure 6 This is an exploded view of the structure of this utility model.

[0014] The components are: 1. collector; 2. casing; 3. guide vane; 4. impeller; 5. guide shroud; 6. shaft end disc; 7. motor; 8. bracket. Detailed Implementation

[0015] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0016] Example 1 See Figures 1 to 6 A split airfoil-shaped high-speed axial flow fan includes a collector 1, a housing 2, guide vanes 3, an impeller 4, a guide shield 5, a shaft end disc 6, a motor 7, and fasteners. The motor 7 is connected to the housing 2 via a bracket 8. The guide vanes 3 are connected to the motor 7. The impeller 4 is connected to the output shaft of the motor 7 by a key. The shaft end disc 6 is mounted on the impeller 4. The guide shield 5 is mounted on the impeller 4. The collector 1 is connected to the housing 2 via the fasteners. The housing 2 has a split structure, which is used to achieve an exposed installation of the impeller 4.

[0017] The fastener is a bolt, and the bolt is a fully threaded bolt with a lock washer.

[0018] The shaft end disc 6 is connected to the impeller 4 by welding or by the fasteners.

[0019] The flow guide shroud 5 is detachably connected to the impeller 4 via the fasteners.

[0020] The split structure of the housing 2 is used to avoid interference between the impeller 4 and the housing 2 during the installation process, so as to ensure the concentricity of the impeller 4 and the motor 7 shaft.

[0021] The guide vanes 3 are arranged in an array, with multiple guide vanes 3 evenly distributed along the circumference of the motor 7, and each guide vane 3 is connected to the motor 7.

[0022] The guide vane 3 has an airfoil-shaped cross-section structure.

[0023] Working principle The assembly process revolves around the splitting of the housing 2. This modular structure eliminates the installation limitations of the traditional integral housing 2, enabling precise alignment and efficient assembly of all components. The specific steps and principles are as follows: First, the split housing 2 is placed on the mounting reference surface. The motor 7 is fixed to the preset mounting position on the housing 2 using the bracket 8. The bracket 8 ensures the relative position stability between the motor 7 and the housing 2, providing a reference for the subsequent installation of the impeller 4 and guide vane 3. Utilizing the split structure of the housing 2, workers can operate directly in an exposed environment without the housing 2 obstructing the view: aligning the shaft hole of the impeller 4 with the output shaft of the motor 7, and connecting them with a key to achieve transmission. Simultaneously, the exposed view allows workers to observe the alignment of the impeller 4 and motor 7 shafts in real time, ensuring concentricity without repeated adjustments. This completely avoids the problems of interference and concentricity deviation between the impeller 4 and the inner wall of the housing 2 when inserted, as seen in the traditional integral housing 2. After the impeller 4 is fixed, the shaft end disc 6 is fixed to the end face of the impeller 4 by welding or fasteners. The shaft end disc 6 can strengthen the structure of the impeller 4 and prevent the impeller 4 from axial displacement during high-speed rotation. Then, the guide shroud 5 is detachably installed on the impeller 4 by fasteners. The streamlined structure of the guide shroud 5 prepares for subsequent airflow optimization. Multiple airfoil cross-section guide vanes 3 are evenly arrayed around the motor 7 and fixed to the motor 7 base. Finally, the split housing 2 is closed and the collector 1 is connected to the housing 2 by fully threaded bolts with anti-loosening washers. The split structure reduces the operation time and greatly improves the installation efficiency.

[0024] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not a limitation on the scope of protection of the present utility model. Based on the technical solution of the present utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the present utility model.

Claims

1. A split airfoil-shaped high-speed axial flow fan, characterized in that, The device includes a collector (1), a housing (2), a guide vane (3), an impeller (4), a shroud (5), a shaft end disc (6), a motor (7), and fasteners. The motor (7) is connected to the housing (2) via a bracket (8). The guide vane (3) is connected to the motor (7). The impeller (4) is connected to the output shaft of the motor (7) by a key. The shaft end disc (6) is mounted on the impeller (4). The shroud (5) is mounted on the impeller (4). The collector (1) is connected to the housing (2) via the fasteners. The housing (2) has a split structure, which is used to achieve the exposed installation of the impeller (4).

2. The split airfoil-shaped high-speed axial flow fan according to claim 1, characterized in that, The fastener is a bolt, and the bolt is a fully threaded bolt with a lock washer.

3. The split airfoil-shaped high-speed axial flow fan according to claim 1, characterized in that, The shaft end disc (6) is connected to the impeller (4) by welding or by the fastener.

4. The split airfoil-shaped high-speed axial flow fan according to claim 1, characterized in that, The flow guide (5) is detachably connected to the impeller (4) by the fastener.

5. The split airfoil-shaped high-speed axial flow fan according to claim 1, characterized in that, The split structure of the housing (2) is used to avoid interference between the impeller (4) and the housing (2) during the installation process, so as to ensure the concentricity of the impeller (4) and the motor (7) shaft.

6. The split airfoil-shaped high-speed axial flow fan according to claim 1, characterized in that, The guide vanes (3) are arranged in an array, and multiple guide vanes (3) are evenly distributed along the circumference of the motor (7), and each guide vane (3) is connected to the motor (7).

7. The split airfoil-shaped high-speed axial flow fan according to claim 1, characterized in that, The guide vane (3) has an airfoil-shaped cross-section structure.

Images