A centrifugal fan

Abstract

The utility model discloses a centrifugal fan, including air deflector, fan impeller, motor and mounting support, the end fixedly connected with installation panel of air deflector. The mounting support includes mounting support and mounting seat, and the installation panel is provided with the positioning sleeve, and the end of mounting support is limited and is inserted in the corresponding positioning sleeve, and the end of mounting support is provided with the threaded extension, and the threaded extension extends to the outside of installation panel with the connection of fastening nut through the positioning sleeve. The utility model discloses the mounting support of mounting support and mounting seat, and utilize the cooperation of the threaded extension of the positioning sleeve and the support end on the installation panel, fastening nut, realized the stable connection between air deflector, motor and mounting support, effectively promoted the structure rigidity and installation stability of centrifugal fan whole, simultaneously, this connection mode structure is reasonable, and the installation is convenient, realizes the quick accurate positioning through the positioning sleeve, improves the operation reliability and service life of complete machine.

Description

Technical Field

[0001] This utility model belongs to the field of fan technology, specifically relating to a centrifugal fan. Background Technology

[0002] Centrifugal fans are fluid machines that rely on input mechanical energy to increase gas pressure and discharge gas. They are widely used in building ventilation, air conditioning systems, industrial equipment cooling, and many other fields. Their basic structure typically includes a fan impeller, a motor that drives the impeller's rotation, and a guide vane to guide airflow into the impeller. However, with the deepening of industrial applications and the increasing demands on equipment performance, in actual use, their installation structures generally suffer from insufficient stability, low assembly positioning accuracy, and complex connection methods. This leads to poor overall operational stability, inconvenient maintenance, and difficulty in meeting the ever-increasing performance and reliability requirements. Utility Model Content

[0003] The purpose of this invention is to solve the aforementioned technical problems in the existing technology and provide a centrifugal fan that is highly practical. Through a mounting bracket consisting of mounting rods and mounting seats, and utilizing the cooperation of the positioning sleeve on the mounting panel with the threaded extension at the end of the mounting rod and the fastening nut, a stable connection is achieved between the air guide ring, the motor, and the mounting bracket. This effectively improves the overall structural rigidity and installation stability of the centrifugal fan and significantly reduces vibration and displacement during operation. Furthermore, this connection method has a reasonable structure and is easy to install. The positioning sleeve enables rapid and accurate positioning, overcoming problems such as insufficient stability, low assembly positioning accuracy, and complex connection methods in traditional centrifugal fan installation structures, thereby improving the overall operational reliability and service life of the machine.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A centrifugal fan includes a guide ring, a fan impeller, a motor, and a mounting bracket. The motor is connected to the fan impeller, and the guide ring is located at the air inlet end of the fan impeller. A mounting panel is fixedly connected to the end of the guide ring. The mounting bracket is fixedly connected to the mounting panel and the motor. The mounting bracket includes mounting rods and mounting seats, with the mounting rods symmetrically arranged on both sides of the mounting seats. A positioning sleeve is provided on the mounting panel, and the end of the mounting rod is limited and inserted into the corresponding positioning sleeve. The end of the mounting rod is provided with a threaded extension, which extends through the positioning sleeve to the outside of the mounting panel and connects with a fastening nut.

[0005] Furthermore, the fan impeller is an aluminum alloy fan impeller, which is manufactured by welding aluminum alloy, significantly reducing the weight of rotating parts. At the same time, aluminum alloy has good corrosion resistance and processing performance, which helps to improve the service life and manufacturing precision of the impeller, and improve the energy efficiency and operational stability of the fan.

[0006] Furthermore, the blades of the wind turbine impeller are hollow blades, and the hollow blades have an airfoil structure. The airfoil hollow blade structure can effectively optimize the airflow channel, reduce eddy current and drag loss, and improve aerodynamic efficiency. In addition, the hollow design can further reduce weight while ensuring strength. Combined with the aluminum plate bending forming process, high-precision and low-cost mass production can be achieved.

[0007] Furthermore, a fixed seat is provided on the outer wall of the motor. The mounting seat is located on the outside of the motor and is fixedly connected to the fixed seat by a bolt assembly. The fixed seat and the bolt assembly firmly connect the mounting seat to the motor housing, forming a rigid support system, which improves the installation stability and reliability, and also facilitates quick assembly, disassembly and maintenance on site.

[0008] Furthermore, the mounting panel is equipped with mounting holes, which are evenly distributed around the four corners of the panel. These mounting holes facilitate connection with external equipment, greatly enhancing the product's versatility and ease of on-site installation, enabling immediate use upon installation.

[0009] Furthermore, the mounting rod and the mounting base are welded together, forming an integrated rigid structure. This significantly enhances the overall structural strength and reliability of the mounting bracket, improves the structural stability of the bracket under long-term high-speed operation, and ensures the safe and reliable operation of the wind turbine.

[0010] Furthermore, the mounting rod includes a vertical section and a horizontal section. Both ends of the horizontal section are connected to the vertical section, and a transition bend section connects the horizontal and vertical sections. The horizontal section is welded and fixed to the mounting base. The threaded extension is located at the end of the vertical section, and the end of the vertical section is matched and inserted into the positioning sleeve. The transition bend section optimizes the stress structure of the mounting rod, avoids stress concentration, and improves fatigue life. The insertion and matching of the vertical section and the positioning sleeve achieves precise positioning. The threaded extension and the fastening nut complete the axial locking, taking into account both assembly convenience and connection reliability.

[0011] Furthermore, the sides of the mounting panel are provided with folded edges, which enhance the edge rigidity and resistance to deformation of the mounting panel.

[0012] Furthermore, a stiffening rib is fixedly connected between the positioning sleeve and the mounting panel. The stiffening rib significantly enhances the connection strength between the positioning sleeve and the mounting panel, thereby improving the overall structural stability and reliability.

[0013] Furthermore, a second stiffening rib is fixedly connected between the mounting rod and the mounting base. The second stiffening rib further enhances the structural strength of the connection area between the mounting rod and the mounting base, significantly improving the durability and load-bearing capacity of the mounting bracket.

[0014] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects: This utility model is highly practical. Through a mounting bracket consisting of a mounting rod and a mounting base, and utilizing the cooperation of a positioning sleeve on the mounting panel with the threaded extension at the end of the mounting rod and a fastening nut, a stable connection is achieved between the air guide ring, the motor, and the mounting bracket. This effectively improves the overall structural rigidity and installation stability of the centrifugal fan, significantly reducing vibration and displacement during operation. Furthermore, this connection method is structurally sound and easy to install. The positioning sleeve enables rapid and precise positioning, overcoming problems such as insufficient stability, low assembly positioning accuracy, and complex connection methods in traditional centrifugal fan installation structures, thereby improving the overall operational reliability and service life of the machine. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 2 for Figure 1 A schematic diagram of the top surface structure; Figure 3 for Figure 1 A schematic diagram of the side planar structure; Figure 4 for Figure 1 A schematic diagram of the bottom planar structure; Figure 5 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0016] In the diagram: 1-Air guide ring; 2-Fan impeller; 3-Motor; 4-Mounting panel; 5-Mounting support rod; 6-Mounting base; 7-Positioning sleeve; 8-Threaded extension; 9-Fastening nut; 10-Fixing base; 11-Bolt assembly; 12-Mounting hole; 13-Vertical section; 14-Horizontal section; 15-Transition bend section; 16-Folded edge; 17-Reinforcing rib plate one; 18-Reinforcing rib plate two. Detailed Implementation

[0017] like Figures 1 to 4 As shown in the figure, this is a first embodiment of the present invention. The present invention discloses a centrifugal fan, including a guide ring 1, a fan impeller 2, a motor 3, and a mounting bracket. The motor 3 is connected to the fan impeller 2, and the guide ring 1 is located at the air inlet end of the fan impeller 2. A mounting panel 4 is fixedly connected to the end of the guide ring 1. The mounting bracket is fixedly connected to the mounting panel 4 and the motor 3. The mounting bracket includes a mounting rod 5 and a mounting base 6. The mounting rod 5 is symmetrically arranged on both sides of the mounting base 6. A positioning sleeve 7 is provided on the mounting panel 4. The positioning sleeve 7 is welded and fixed to the mounting panel 4 as a whole. The end of the mounting rod 5 is limited and inserted into the corresponding positioning sleeve 7. The end of the mounting rod 5 is provided with a threaded extension 8. The end face of the positioning sleeve 7 is provided with a through hole. The threaded extension 8 extends through the through hole, passes through the positioning sleeve 7, and extends to the outside of the mounting panel 4 to connect with a fastening nut 9.

[0018] The fan impeller 2 is made of aluminum alloy and is welded from aluminum alloy, which significantly reduces the weight of rotating parts. Aluminum alloy also has good corrosion resistance and machinability, which helps to improve the impeller's service life and manufacturing precision, thereby enhancing the fan's energy efficiency and operational stability. The blades of the fan impeller 2 are hollow blades with an airfoil structure. This airfoil hollow blade structure effectively optimizes the airflow channel, reduces eddy currents and drag losses, and improves aerodynamic efficiency. Furthermore, the hollow design further reduces weight while maintaining strength. Combined with aluminum plate bending forming technology, this enables high-precision, low-cost mass production.

[0019] A fixing seat 10 is provided on the outer wall of the motor 3, and a mounting seat 6 is located on the outside of the motor 3. The center of the mounting seat 6 has a through hole, leaving space for the installation of the motor 3. The mounting seat 6 is fixedly connected to the fixing seat 10 by a bolt assembly 11. The fixing seat 10 and the bolt assembly 11 firmly connect the mounting seat 6 to the outer shell of the motor 3, forming a rigid support system, which improves the installation stability and reliability, and also facilitates quick assembly, disassembly and maintenance on site. The motor 3 adopts an integrated design of drive and motor 3, with a compact structure, and is suitable for various application scenarios. It is widely used in fresh air systems, high-pressure ventilation systems and new energy equipment, etc., and the motor 3 adopts advanced electronic drive and intelligent control technology, which can realize real-time adjustment of air volume and air pressure.

[0020] The mounting panel 4 is provided with mounting holes 12, which are evenly distributed around the four corners of the mounting panel 4. The mounting holes 12 facilitate docking and connection with external equipment, greatly improving the product's versatility and on-site installation convenience, enabling immediate use and reducing installation costs. The side of the mounting panel 4 is provided with a folded edge 16, which enhances the edge rigidity and deformation resistance of the mounting panel 4.

[0021] The mounting rod 5 and the mounting base 6 are welded together, forming an integrated rigid structure. This significantly enhances the overall structural strength and reliability of the mounting bracket, improves its structural stability under long-term high-speed operation, and ensures the safe and reliable operation of the fan. The mounting rod 5 includes a vertical section 13 and a horizontal section 14. Both ends of the horizontal section 14 are connected to the vertical section 13, and a transition bend section 15 connects the horizontal and vertical sections 14. The horizontal section 14 is welded to the mounting base 6. A threaded extension 8 is located at the end of the vertical section 13, which is fitted into the positioning sleeve 7. The transition bend section 15 optimizes the stress structure of the mounting rod 5, avoiding stress concentration and improving fatigue life. The insertion and engagement of the vertical section 13 and the positioning sleeve 7 achieves precise positioning, and the threaded extension 8 and the fastening nut 9 complete axial locking, balancing ease of assembly and connection reliability.

[0022] like Figure 5 As shown, this is Embodiment Two of the present invention. Based on Embodiment One, the connections between the positioning sleeve 7 and the mounting panel 4, and between the mounting support rod 5 and the mounting base 6, are strengthened. A stiffening rib 17 is fixedly connected between the positioning sleeve 7 and the mounting panel 4. The stiffening rib 17 significantly enhances the connection strength between the positioning sleeve 7 and the mounting panel 4, improving the overall structural stability and reliability. A stiffening rib 2 18 is fixedly connected between the mounting support rod 5 and the mounting base 6. The stiffening rib 2 18 further enhances the structural strength of the connection area between the mounting support rod 5 and the mounting base 6, significantly improving the durability and load-bearing capacity of the mounting bracket.

[0023] This utility model is highly practical. Through a mounting bracket consisting of a mounting rod 5 and a mounting base 6, and utilizing the cooperation between the positioning sleeve 7 on the mounting panel 4, the threaded extension 8 at the end of the mounting rod 5, and the fastening nut 9, a stable connection is achieved between the air guide ring 1, the motor 3, and the mounting bracket. This effectively improves the overall structural rigidity and installation stability of the centrifugal fan, significantly reducing vibration and displacement during operation. Simultaneously, this connection method is structurally sound and easy to install. The positioning sleeve 7 enables rapid and precise positioning, overcoming problems such as insufficient stability, low assembly positioning accuracy, and complex connection methods in traditional centrifugal fan installation structures, thereby improving the overall operational reliability and service life of the machine.

[0024] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A centrifugal fan, comprising an air guide ring, a fan impeller and a motor, wherein the motor is connected to the fan impeller and the air guide ring is disposed at the air inlet end of the fan impeller; Its features are: The end of the air guide ring is fixedly connected to a mounting panel; It also includes a mounting bracket, which is fixedly connected to the mounting panel and the motor; The mounting bracket includes mounting rods and mounting bases, with the mounting rods symmetrically arranged on both sides of the mounting bases; The mounting panel is provided with a positioning sleeve, and the end of the mounting rod is inserted into the corresponding positioning sleeve. The end of the mounting rod is provided with a threaded extension, which extends through the positioning sleeve to the outside of the mounting panel and is connected to the fastening nut.

2. A centrifugal fan according to claim 1, characterized in that: The impeller is an aluminum alloy impeller.

3. A centrifugal fan according to claim 1, characterized in that: The blades of the wind turbine impeller are hollow blades, and the hollow blades have an airfoil structure.

4. A centrifugal fan according to claim 1, characterized in that: A mounting base is provided on the outer wall of the motor, and the mounting base is located on the outside of the motor. The mounting base is fixedly connected to the mounting base by a bolt assembly.

5. A centrifugal fan according to claim 1, characterized in that: The mounting panel is provided with mounting holes.

6. A centrifugal fan according to claim 1, characterized in that: The mounting support rod is welded and fixed to the mounting base.

7. A centrifugal fan according to claim 1, characterized in that: The mounting support rod includes a vertical section and a horizontal section. Both ends of the horizontal section are connected to the vertical section. A transition bend is connected between the horizontal section and the vertical section. The horizontal section is welded and fixed to the mounting base. The threaded extension is located at the end of the vertical section. The end of the vertical section is fitted into the positioning sleeve.

8. A centrifugal fan according to claim 1, characterized in that: The mounting panel has a folded edge on its side.

9. A centrifugal fan according to claim 1, characterized in that: A stiffening rib is fixedly connected between the positioning sleeve and the mounting panel.

10. A centrifugal fan according to claim 1, characterized in that: A second stiffening rib is fixedly connected between the mounting support rod and the mounting base.

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