Forward multi-wing type low-noise air conditioner centrifugal fan
By adopting a variety of threaded connection methods and modular designs in air-conditioning centrifugal fans, the problem of difficult disassembly of traditional fan components is solved, rapid maintenance and efficient maintenance are achieved, and downtime and maintenance costs are reduced.
Patent Information
- Application Number
- CN202422320617.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-09-24
AI Technical Summary
The structural design of traditional air conditioning centrifugal fans makes it difficult to disassemble individual components, resulting in more time and labor required for maintenance and repair, increasing downtime and maintenance costs.
A variety of threaded connection methods are adopted, including the first threaded connection frame, the second threaded connection frame, the threaded connection flange and the fixing flange. The modular design of the fan is realized through bolt connection, allowing each component to be disassembled independently, and providing a quick inspection method through the bolt connection between the mounting plate and the third threaded connection frame.
Simplifies cleaning, maintenance and repair processes, reduces downtime and maintenance costs, improves maintenance efficiency and reliability, and ensures equipment stability and reusability of components.
Smart Images
Figure CN222963054U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of centrifugal fans, in particular to a forward multi-wing low-noise air-conditioning centrifugal fan. Background Art
[0002] With the development of the times, air-conditioning technology has been continuously advancing, especially the increasing demands for low noise and high efficiency. As an important ventilation device, the multi-wing low-noise air-conditioning centrifugal fan has received extensive attention due to its good performance and adaptability.
[0003] Traditional air-conditioning centrifugal fans may adopt a fixed structural design, making it difficult to disassemble individual components such as the impeller and muffler. This results in spending more time and labor to disassemble the entire fan system during maintenance and repair, increasing the downtime and raising the maintenance cost.
[0004] Therefore, those skilled in the art have provided a forward multi-wing low-noise air-conditioning centrifugal fan to solve the problems raised in the above background art. Content of the Utility Model
[0005] The purpose of the content of the utility model is to solve the deficiencies existing in the prior art, and a forward multi-wing low-noise air-conditioning centrifugal fan is proposed. The bolt connection between the mounting plate and the third threaded connection bracket in this air-conditioning centrifugal fan provides an intuitive and quick inspection method. Users can directly observe the key components inside the fan by simply disassembling the mounting plate, thereby quickly diagnosing faults. This convenient inspection method greatly improves the diagnosis efficiency and allows users to make more accurate decisions based on the specific situation observed, such as determining whether further disassembly and repair of the fan are required. By reducing unnecessary disassembly steps, this design not only saves valuable time and labor but also reduces the risk of damage to the equipment caused by frequent disassembly, thus enhancing the maintenance efficiency and reliability of the entire system.
[0006] To achieve the above purpose, the utility model provides the following technical solutions:
[0007] A forward multi-wing low-noise air-conditioning centrifugal fan, comprising a centrifugal fan, connection mechanisms are arranged on both sides of the centrifugal fan, the connection mechanisms include a first threaded connection bracket and a second threaded connection bracket, the first threaded connection bracket is arranged on one side of the inner wall of the centrifugal fan and penetrates the centrifugal fan, the second threaded connection bracket is arranged on the other side of the inner wall of the centrifugal fan and penetrates the centrifugal fan, a threaded connection flange is arranged on one side of the outer wall of the centrifugal fan, a second fixed flange is arranged on the other side of the outer wall of the centrifugal fan, a circular duct muffler is arranged on one side of the threaded connection flange, a third threaded connection bracket is arranged at the lower end of the inner wall of the centrifugal fan, and a mounting plate is arranged at the lower end of the outer wall of the centrifugal fan;
[0008] Through the above technical solution, a variety of threaded connection methods are adopted. Among them, the first threaded connection bracket and the second threaded connection bracket are respectively equipped on both sides of the centrifugal fan, and they are fixedly connected to one side of the threaded connection flange and the second fixed flange. In addition, the first fixed flange on the circular duct muffler is connected to the other side of the threaded connection flange through connection bolts. This design not only facilitates quick disassembly but also ensures the stable installation and convenient overall disassembly of the fan. These threaded connection points realize the modularization of the fan, allowing each component to be disassembled independently, thus simplifying the cleaning, maintenance, and repair processes. This design reduces the downtime and maintenance costs, while ensuring the stability of the equipment and the reusability of the components, providing an efficient, economical, and easy-to-operate solution for users.
[0009] Furthermore, a first fixed flange is fixedly connected to the other side of the outer wall of the circular duct muffler, and connection bolts are arranged at the edges of the outer walls of the threaded connection flange and the first fixed flange, and the threaded connection flange and the first fixed flange are fixed through the connection bolts;
[0010] Through the above technical solution, the connection strength between the fan and the muffler is effectively enhanced, ensuring good sealing performance during operation. Since bolt connection is convenient for disassembly and installation, users can quickly replace or maintain the muffler, thereby reducing the downtime and simplifying the maintenance process, improving work efficiency.
[0011] Furthermore, the second threaded connection bracket is fixedly connected to the second fixed flange through bolts;
[0012] Through the above technical solution, the bolt connection between the second threaded connection bracket and the second fixed flange improves the structural stability of the fan, ensuring that the fan will not loosen or shift during high-intensity operation. This connection method also makes the maintenance process simpler. Users can easily disassemble and quickly complete component replacement, enhancing the overall stability and reliability of the equipment.
[0013] Furthermore, a protective housing is fixed to the other side of the outer wall of the centrifugal fan, and a servo motor is fixedly connected to one side of the inner wall of the protective housing;
[0014] Through the above technical solution, the protective housing provides effective protection for the servo motor, avoiding damage to the motor caused by the external environment. At the same time, this structural design also improves the safety and service life of the equipment, reduces the occurrence frequency of motor failures, and ensures the long-term stable operation of the fan.
[0015] Furthermore, the output end of the servo motor extends into the centrifugal fan and is fixedly connected to an impeller;
[0016] Through the above technical solution, the direct fixed connection between the servo motor and the impeller ensures the efficient transmission of the impeller during operation, enabling the output power of the motor to be transmitted to the impeller without loss, improving the working efficiency of the fan. In addition, this design also makes the overall structure of the fan more compact, reduces the need for intermediate transmission devices, and simplifies maintenance.
[0017] Furthermore, the first threaded connection bracket is fixedly connected to the threaded connection flange by bolts;
[0018] Through the above technical solution, the fixing method of the first threaded connection bracket and the threaded connection flange ensures the firm connection between components, enhances the structural stability of the equipment, and the bolt connection also makes installation and disassembly more convenient. Users can quickly replace parts or perform maintenance, shortening the maintenance cycle and improving the working efficiency of the equipment.
[0019] Furthermore, the mounting plate is fixed to the third threaded connection bracket by bolts;
[0020] Through the above technical solution, the fixing method of the mounting plate to the third threaded connection bracket by bolts provides a solid support for the fan, ensuring the stability of the equipment during use. Users can easily disassemble the mounting plate for quick inspection and repair, reducing unnecessary downtime.
[0021] The utility model has the following beneficial effects:
[0022] 1. A forward multi-wing low-noise air-conditioning centrifugal fan proposed by the present utility model. This air-conditioning centrifugal fan adopts a variety of threaded connection methods. Among them, the two sides of the centrifugal fan are respectively equipped with a first threaded connection frame and a second threaded connection frame, which are fixedly connected to one side of the threaded connection flange and the second fixed flange. In addition, the first fixed flange on the circular duct muffler is connected to the other side of the threaded connection flange through connecting bolts. This design not only facilitates quick disassembly but also ensures the stable installation and convenient overall disassembly of the fan. These threaded connection points realize the modularization of the fan, allowing each component to be disassembled independently, thus simplifying the cleaning, maintenance, and repair processes. This design reduces the downtime and maintenance costs, while ensuring the stability of the equipment and the reusability of components, providing users with an efficient, economical, and easy-to-operate solution.
[0023] 2. A forward multi-wing low-noise air-conditioning centrifugal fan proposed by the present utility model. The bolt connection between the mounting plate and the third threaded connection frame in this air-conditioning centrifugal fan provides an intuitive means of quick inspection. Users can directly observe the key components inside the fan by simply disassembling the mounting plate, thereby quickly diagnosing faults. This convenient inspection method greatly improves the diagnostic efficiency and allows users to make more accurate decisions based on the specific situation observed. For example, it can be judged whether more in-depth disassembly and repair of the fan are required. By reducing unnecessary disassembly steps, this design not only saves valuable time and labor but also reduces the risk of damage to the equipment caused by frequent disassembly, thus improving the maintenance efficiency and reliability of the entire system. Description of the Drawings
[0024] Figure 1 Isometric view of a forward multi-wing low-noise air-conditioning centrifugal fan proposed by the present utility model;
[0025] Figure 2 Side isometric view of a forward multi-wing low-noise air-conditioning centrifugal fan proposed by the present utility model;
[0026] Figure 3 Exploded view of a forward multi-wing low-noise air-conditioning centrifugal fan proposed by the present utility model;
[0027] Figure 4 Partial exploded view of a forward multi-wing low-noise air-conditioning centrifugal fan proposed by the present utility model.
[0028] Legend Explanation:
[0029] 1. Centrifugal fan; 2. Connecting mechanism; 201. First threaded connection bracket; 202. Threaded connection flange; 203. Connecting bolt; 204. First fixed flange; 205. Second threaded connection bracket; 206. Second fixed flange; 207. Third threaded connection bracket; 208. Mounting plate;
[0030] 3. Circular duct muffler; 4. Servo motor; 5. Protective shell; 6. Impeller. Specific embodiments
[0031] Next, the technical solutions in the specific embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the specific embodiments of the present utility model. Obviously, the described specific embodiments are only a part of the specific embodiments of the present utility model, rather than all of the specific embodiments. Based on the specific embodiments of the present utility model, all other specific embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.
[0032] Refer to Figures 1-4 , a specific embodiment provided by the present utility model:
[0033] A forward multi-wing low-noise air-conditioning centrifugal fan includes a centrifugal fan 1. Connecting mechanisms 2 are arranged on both sides of the centrifugal fan 1. The connecting mechanism 2 includes a first threaded connection bracket 201 and a second threaded connection bracket 205. The first threaded connection bracket 201 is arranged on one side of the inner wall of the centrifugal fan 1 and penetrates the centrifugal fan 1. The second threaded connection bracket 205 is arranged on the other side of the inner wall of the centrifugal fan 1 and penetrates the centrifugal fan 1. A threaded connection flange 202 is arranged on one side of the outer wall of the centrifugal fan 1. A second fixed flange 206 is arranged on the other side of the outer wall of the centrifugal fan 1. A circular duct muffler 3 is arranged on one side of the threaded connection flange 202. A third threaded connection bracket 207 is arranged at the lower end of the inner wall of the centrifugal fan 1. A mounting plate 208 is arranged at the lower end of the outer wall of the centrifugal fan 1;
[0034] A variety of threaded connection methods are adopted. Among them, the first threaded connection bracket 201 and the second threaded connection bracket 205 are respectively equipped on both sides of the centrifugal fan 1, and they are fixedly connected to one side of the threaded connection flange 202 and the second fixed flange 206. In addition, the first fixed flange 204 on the circular duct muffler 3 is connected to the other side of the threaded connection flange 202 through the connecting bolt 203. This design not only facilitates quick disassembly but also ensures the stable installation and convenient overall disassembly of the fan. These threaded connection points realize the modularization of the fan, allowing each component to be disassembled independently, thereby simplifying the cleaning, maintenance, and repair processes. This design reduces the downtime and maintenance costs, while ensuring the stability of the equipment and the reusability of the components, providing an efficient, economical, and easy-to-operate solution for users.
[0035] On the other side of the outer wall of the circular duct muffler 3, a first fixed flange 204 is fixedly connected. Connecting bolts 203 are provided at the edges of the outer walls of the threaded connecting flange 202 and the first fixed flange 204, and the threaded connecting flange 202 and the first fixed flange 204 are fixed by the connecting bolts 203, effectively enhancing the connection strength between the fan and the muffler, ensuring good sealing performance during operation. Since bolt connection is convenient for disassembly and installation, users can quickly replace or maintain the muffler, thereby reducing downtime and simplifying the maintenance process, improving work efficiency. The second threaded connecting frame 205 is fixedly connected to the second fixed flange 206 by bolts. The bolt connection between the second threaded connecting frame 205 and the second fixed flange 206 improves the structural stability of the fan, ensuring that the fan will not loosen or shift during high-intensity operation. This connection method also makes the maintenance process simpler. Users can easily disassemble and quickly complete component replacement, enhancing the overall stability and reliability of the equipment.
[0036] On the other side of the outer wall of the centrifugal fan 1, a protective shell 5 is fixed. On one side of the inner wall of the protective shell 5, a servo motor 4 is fixedly connected. The protective shell 5 provides effective protection for the servo motor 4, preventing damage to the motor caused by the external environment. At the same time, this structural design also improves the safety and service life of the equipment, reduces the occurrence frequency of motor failures, and ensures the long-term stable operation of the fan. The output end of the servo motor 4 extends into the centrifugal fan 1 and is fixedly connected to an impeller 6. The direct fixed connection between the servo motor 4 and the impeller 6 ensures the efficient transmission of the impeller 6 during operation, enabling the output power of the motor to be transmitted to the impeller 6 without loss, enhancing the working efficiency of the fan. In addition, this design also makes the overall structure of the fan more compact, reduces the need for intermediate transmission devices, and simplifies maintenance.
[0037] The first threaded connecting frame 201 is fixedly connected to the threaded connecting flange 202 by bolts. The fixing method of the first threaded connecting frame 201 and the threaded connecting flange 202 ensures a firm connection between components, enhancing the structural stability of the equipment. Bolt connection also makes installation and disassembly more convenient. Users can quickly replace or repair parts, shortening the maintenance cycle and improving the working efficiency of the equipment. The mounting plate 208 is fixed to the third threaded connecting frame 207 by bolts. The fixing method of the mounting plate 208 to the third threaded connecting frame 207 by bolts provides a solid support for the fan, ensuring the stability of the equipment during use. Users can easily disassemble the mounting plate 208 to quickly conduct inspections and repairs, reducing unnecessary downtime.
[0038] Working principle: The core of the fan consists of an impeller 6 driven by a servo motor 4. Its multi-wing design effectively accelerates air and increases pressure during rotation. The connecting mechanism 2 includes a first threaded connecting bracket 201 and a second threaded connecting bracket 205, which are connected to a threaded connecting flange 202 and a second fixed flange 206, ensuring the stable installation of the fan. The circular duct muffler 3 is connected to the threaded connecting flange 202 through a connecting bolt 203, effectively reducing the operating noise. The bolt connection design between the mounting plate 208 and the third threaded connecting bracket 207 allows users to easily inspect the interior of the fan, simplifying the maintenance process. The overall design of the fan focuses on modularity and quick disassembly, enabling components such as the circular duct muffler 3 and the impeller 6 to be replaced independently, reducing downtime and improving maintenance efficiency. The setting of the protective shell 5 not only protects the servo motor 4 but also enhances the safety of the equipment. This design enables the fan to provide low-noise operation while ensuring high efficiency and long-term stability, making it very suitable for air-conditioning systems with strict noise control requirements.
[0039] Finally, it should be noted that the above are only the preferred specific embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A forward multi-blade low-noise air-conditioning centrifugal fan, comprising a centrifugal fan (1), characterized in that: The centrifugal fan (1) is provided with connection mechanisms (2) on both sides, the connection mechanisms (2) comprising a first threaded connection frame (201) and a second threaded connection frame (205), the first threaded connection frame (201) being provided on one side of the inner wall of the centrifugal fan (1) and penetrating the centrifugal fan (1), the second threaded connection frame (205) being provided on the other side of the inner wall of the centrifugal fan (1) and penetrating the centrifugal fan (1), a threaded connection flange (202) being provided on one side of the outer wall of the centrifugal fan (1), a second fixing flange (206) being provided on the other side of the outer wall of the centrifugal fan (1), a circular air duct silencer (3) being provided on one side of the threaded connection flange (202), a third threaded connection frame (207) being provided at the lower end of the inner wall of the centrifugal fan (1), and a mounting plate (208) being provided at the lower end of the outer wall of the centrifugal fan (1).
2. A forward multi-blade low-noise air-conditioning centrifugal fan according to claim 1, characterized in that: A first fixed flange (204) is fixedly connected to the other side of the outer wall of the circular duct silencer (3), and connecting bolts (203) are provided at the edges of the outer walls of the threaded connecting flange (202) and the first fixed flange (204), and the threaded connecting flange (202) and the first fixed flange (204) are fixed by the connecting bolts (203).
3. A forward multi-blade low-noise air-conditioning centrifugal fan according to claim 1, characterized in that: The second threaded connection frame (205) is fixedly connected to the second fixing flange (206) via bolts.
4. A forward multi-blade low-noise air-conditioning centrifugal fan according to claim 1, characterized in that: A protective shell (5) is fixed to the other side of the outer wall of the centrifugal fan (1), and a servo motor (4) is fixedly connected to one side of the inner wall of the protective shell (5).
5. A forward multi-blade low-noise air-conditioning centrifugal fan according to claim 4, characterized in that: The output end of the servo motor (4) is connected to the interior of the centrifugal fan (1) and is fixedly connected to an impeller (6).
6. A forward multi-blade low-noise air-conditioning centrifugal fan according to claim 1, characterized in that: The first threaded connection frame (201) is fixedly connected to the threaded connection flange (202) via bolts.
7. A forward multi-blade low-noise air-conditioning centrifugal fan according to claim 1, characterized in that: The mounting plate (208) is fixed to the third threaded connection frame (207) via bolts.