Lightweight volute-free centrifugal fan

Abstract

The utility model relates to the technical field of centrifugal fans, and particularly provides a lightweight volute-free centrifugal fan. The fan cover comprises a support, the front side of the support is fixedly connected with a front plate, the front plate is fixedly connected with an adjusting assembly, the adjusting assembly comprises three sets of fixing rods, one ends of the fixing rods are connected with a fan cover mechanism in a sliding mode, the fan cover mechanism comprises a front frame and a rear frame, and a blocking frame is connected between the front frame and the rear frame in a rotating mode. Through the arrangement of the support, the front plate and the adjusting assembly, the support ensures the stability and reliability of the fan in the operation process, faults caused by vibration or external force are prevented, and a user can flexibly adjust the air outlet direction and the air volume of the fan according to needs through the adjusting assembly. The stability and the reliability of the fan cover mechanism in the sliding process are ensured, faults caused by shaking or blocking are avoided, and the operation efficiency and the use environment of the fan are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal fan technical field especially relates to a kind of lightweight voluteless centrifugal fan. BACKGROUND

[0002] Lightweight voluteless centrifugal fan is usually referred to as "free air outlet" or "gravity type" fan, and its core component is impeller, without volute structure in traditional centrifugal fan, as there is no volute, air is directly discharged from impeller outlet, and this design simplifies the structure of fan, and reduces weight.

[0003] The present application inventors found that there are the following problems in practical use process:

[0004] The current voluteless centrifugal fan can generally provide larger air outlet area, and is convenient to clean, but when directional wind power needs to be provided or wind pressure needs to be improved, voluteless fan cannot meet the use demand.

[0005] Therefore, it is necessary to provide a lightweight voluteless centrifugal fan to solve the above technical problems. UTILITY MODEL CONTENT

[0006] The utility model solves the technical problem in that, in view of the above defects of prior art, a lightweight voluteless centrifugal fan is provided.

[0007] To achieve the above purpose, the technical scheme of the utility model is as follows: a lightweight voluteless centrifugal fan, comprising a support, a front plate is fixedly connected to the front side of the support, an adjusting assembly is fixedly connected to the front plate, the adjusting assembly comprises three groups of fixed rods, a fan cover mechanism is slidably connected to one end of the fixed rod, the fan cover mechanism comprises a front frame and a rear frame, and a blocking frame is rotatably connected between the front frame and the rear frame.

[0008] By adopting the above technical scheme, the support serves as the supporting structure of the entire fan, ensuring the stability and reliability of the fan, the front plate is fixedly connected to the front side of the support, providing a mounting basis for the adjusting assembly, the adjusting assembly comprises three groups of fixed rods, one end of the fixed rods is slidably connected with the fan cover mechanism, so that the fan cover mechanism can be slidably adjusted as needed, enabling the fan to switch between voluteless and volute modes, and improving the flexibility and applicability of the fan.

[0009] Further setting, three groups of connecting mechanisms are arranged between the front frame and the rear frame, and the connecting mechanism comprises a mounting plate.

[0010] By adopting the above technical solution, three sets of connecting mechanisms are set between the front frame and the rear frame. These connecting mechanisms include mounting plates. The function of the connecting mechanisms is to strengthen the connection between the front frame and the rear frame and improve the overall stability of the windshield mechanism. The mounting plates, as part of the connecting mechanisms, provide a mounting position for the subsequent springs.

[0011] Furthermore, a spring is fixedly connected to one side of the mounting plate, and a mounting block is fixedly connected to one end of the spring.

[0012] By adopting the above technical solution, a spring is fixedly connected to one side of the mounting plate, and a mounting block is fixedly connected to one end of the spring. The mounting plate is fixedly connected to the front frame, and the mounting block is fixedly connected to the rear frame, so that the front frame and the rear frame have a certain elasticity and can be finely adjusted as needed. When the wind hood mechanism is subjected to external force, the spring can absorb part of the impact force and protect the wind hood mechanism from damage.

[0013] Further configuration: the mounting plate is fixedly connected to the front frame, and the mounting block is fixedly connected to the rear frame.

[0014] By adopting the above technical solution, a spring is fixedly connected to one side of the mounting plate, and a mounting block is fixedly connected to one end of the spring. The mounting plate is fixedly connected to the front frame, and the mounting block is fixedly connected to the rear frame, so that the front frame and the rear frame have a certain elasticity and can be pulled apart as needed, which facilitates the installation of baffle frames of different specifications.

[0015] Furthermore, the fixing rod and the connecting mechanism are slidably connected, and a fixing clip is fixedly connected to one end of the fixing rod, which is used to clamp the mounting block.

[0016] By adopting the above technical solution, the wind shield mechanism can be firmly fixed on the fixed rod, while also being able to slide and adjust as needed. The fixing clip ensures the stability and reliability of the wind shield mechanism during the sliding process.

[0017] Furthermore, a motor bracket is fixedly connected to the rear side of the bracket, and reinforcing ribs are fixedly connected to both sides of the motor bracket. Ribs are provided on the inner side of the reinforcing ribs.

[0018] By adopting the above technical solutions, the structural strength of the motor bracket is strengthened and its load-bearing capacity is improved. The addition of reinforcing ribs and ribs makes the motor bracket more stable and able to withstand greater motor weight and vibration during operation.

[0019] In a further configuration, a motor is fixedly connected to the top of the motor bracket, and an impeller is fixedly connected to the output end of the motor.

[0020] By adopting the above technical solution, the motor serves as the power source of the fan, driving the impeller to rotate and generate airflow. The impeller enables the airflow to pass through efficiently and generate the required pressure and flow rate.

[0021] Furthermore, the other end of the fixing rod is fixedly connected to a wind guide shroud, one end of which extends into the impeller inlet.

[0022] By adopting the above technical solution, the design of the air guide shroud allows airflow to enter the impeller more smoothly and reduces airflow loss at the impeller inlet.

[0023] Furthermore, the baffle frame is provided with an opening for air outlet.

[0024] By adopting the above technical solution, the opening allows airflow to be discharged from the fan in a predetermined direction. By adjusting the angle of the baffle and the size of the opening, the user can adjust the airflow direction and air volume of the fan according to actual needs.

[0025] Compared with related technologies, the lightweight volute-less centrifugal fan provided by this utility model has the following beneficial effects:

[0026] This utility model provides a lightweight, volute-less centrifugal fan. By incorporating a support frame, front plate, and adjustment components, the support frame ensures the fan's stability and reliability during operation, preventing malfunctions caused by vibration or external forces. The support frame fully considers the fan's weight, operational vibration, and external environmental factors, ensuring stable operation under various harsh conditions. The support frame utilizes lightweight materials such as aluminum alloy or high-strength plastic, reducing the overall weight of the fan, facilitating installation and maintenance, lessening the burden on the fan, and improving its operating efficiency, enabling more energy-efficient and environmentally friendly operation. The adjustment components allow users to flexibly adjust the fan's outlet direction and airflow as needed, meeting the requirements of different scenarios. The design of the fixing rods and connecting mechanisms ensures the stability and reliability of the fan shroud mechanism during sliding, avoiding malfunctions caused by shaking or jamming, thus improving the fan's operating efficiency and the operating environment.

[0027] This utility model provides a lightweight, volute-less centrifugal fan, which features a baffle frame and openings of different sizes. These opening sizes allow users to flexibly adjust the fan's airflow as needed, meeting the requirements of different scenarios. By selecting an appropriate opening size, users can control the fan's airflow speed and volume, thereby avoiding unnecessary energy waste and improving the fan's energy-saving performance. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0029] Figure 2 This is a rear-view three-dimensional structural diagram of the present invention;

[0030] Figure 3 This is a partial cross-sectional structural diagram of the present invention;

[0031] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0032] The following are the labeling elements in the diagram: 1. Bracket; 2. Front plate; 3. Adjustment assembly; 31. Fixing rod; 32. Fan shroud mechanism; 321. Front frame; 322. Rear frame; 323. Baffle frame; 33. Connecting mechanism; 331. Mounting plate; 332. Spring; 333. Mounting block; 34. Fixing clip; 101. Motor bracket; 102. Reinforcing rib; 103. Rib plate; 4. Motor; 5. Impeller; 35. Fan shroud; 6. Impeller inlet; 7. Opening. Detailed Implementation

[0033] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings show typical embodiments of this utility model. Example

[0034] like Figures 1-4 As shown, this utility model discloses a lightweight volute-less centrifugal fan, including a support 1. A front plate 2 is fixedly connected to the front side of the support 1, and an adjustment assembly 3 is fixedly connected to the front plate 2. The adjustment assembly 3 includes three sets of fixing rods 31. One end of the fixing rods 31 is slidably connected to a fan shroud mechanism 32. The fan shroud mechanism 32 includes a front frame 321 and a rear frame 322. A baffle 323 is rotatably connected between the front frame 321 and the rear frame 322. The baffle 323 can be adjusted to change the air outlet direction. This lightweight volute-less centrifugal fan reduces the overall weight of the fan by eliminating the traditional volute structure, making it easier to install and maintain.

[0035] like Figure 2 , Figure 3 , Figure 4 As shown, three sets of connecting mechanisms 33 are provided between the front frame 321 and the rear frame 322. The connecting mechanism 33 includes a mounting plate 331, which makes the connection between the front frame 321 and the rear frame 322 more robust, able to withstand greater wind pressure and wind force, and improves the durability of the fan.

[0036] like Figure 2 , Figure 3 , Figure 4As shown, a spring 332 is fixedly connected to one side of the mounting plate 331, and a mounting block 333 is fixedly connected to one end of the spring 332. This elastic connection also improves the flexibility of the fan cover mechanism 32, making it easier for users to adjust the position and angle of the fan cover mechanism 32.

[0037] like Figure 2 , Figure 3 , Figure 4 As shown, the mounting plate 331 is fixedly connected to the front frame 321, and the mounting block 333 is fixedly connected to the rear frame 322. This elastic connection also improves the flexibility of the hood mechanism 32, allowing users to more easily adjust the position and angle of the opening 7 of the hood mechanism 32.

[0038] like Figure 2 , Figure 3 As shown, the fixing rod 31 and the connecting mechanism 33 are slidably connected. One end of the fixing rod 31 is fixedly connected to the fixing clip 34, which is used to clamp the mounting block 333. This sliding connection method also simplifies the installation and disassembly process of the fan cover mechanism 32 and improves the maintainability of the fan.

[0039] like Figure 2 As shown, a motor bracket 101 is fixedly connected to the rear side of the bracket 1, and reinforcing ribs 102 are fixedly connected to both sides of the motor bracket 101. Ribs 103 are provided on the inner side of the reinforcing ribs 102. Through the lightweight structure, the efficiency of handling and installation is improved while ensuring the structural strength of the equipment, and the overall stability of the fan is also improved, making the fan more stable and reliable during operation.

[0040] like Figure 2 , Figure 3 As shown, a motor 4 is fixedly connected to the top of the motor bracket 101, and an impeller 5 is fixedly connected to the output end of the motor 4. The fixed connection between the motor 4 and the impeller 5 ensures the stability and reliability of the fan during operation and avoids failures caused by loosening or vibration.

[0041] like Figure 3 As shown, the other end of the fixing rod 31 is fixedly connected to the air guide shroud 35. One end of the air guide shroud 35 extends into the impeller inlet 6. The air guide shroud 35 can also protect the edge of the impeller 5, prevent external debris from colliding with the edge of the impeller 5 and causing damage, and improve the efficiency and service life of the fan.

[0042] In practice, firstly, the bracket 1 supports the entire fan structure. The motor 4 on the motor bracket 101 drives the impeller 5 to rotate, generating airflow. The shroud mechanism 32 is pulled outward and cooperates with the air guide shroud 35 to form a complete air inlet. The airflow enters directly from the impeller inlet 6 and is discharged as the impeller 5 rotates, forming a large air outlet area, which is suitable for scenarios that require a wide distribution of airflow.

[0043] When the shroud mechanism 32 is needed, pull the front frame 321 and the rear frame 322 so that the front frame 321 and the rear frame 322 can overcome the elastic force of the spring 332 and slide to both sides, so that the baffle 323 is locked between the front frame 321 and the rear frame 322, and adjust the position of the opening 7. Slide the shroud mechanism 32 so that the connecting mechanism 33 connected to the shroud mechanism 32 can be locked into the fixing clip 34, so that the shroud mechanism 32 fits tightly around the impeller 5, forming a volute-like structure. In this way, the airflow will be guided when passing through the shroud mechanism 32, forming a more concentrated directional wind force and increasing the wind pressure.

[0044] When the air outlet direction needs to be adjusted, the user can pull open the front frame 321 and the rear frame 322, and rotate the baffle 323 to adjust the direction of the opening 7, thereby changing the air outlet direction. This allows the user to flexibly adjust the air outlet direction of the fan according to actual needs, improving wind pressure and directional wind force, and also protecting the impeller 5 and other components inside the fan from interference from the external environment. Example

[0045] like Figure 2 As shown, based on Embodiment 1, this utility model provides a technical solution: the baffle frame 323 is provided with an opening 7, which is used for air outlet and also improves the flexibility and applicability of the fan, enabling the fan to adapt to different usage scenarios and needs.

[0046] In practice, firstly, by replacing the baffle frame 323 with different sizes of openings 7, different working conditions can be adapted.

[0047] The advantages of this technical solution in practical applications include, but are not limited to, the following:

[0048] 1. The support frame fully considers the weight of the fan, the vibration during operation, and external environmental factors, ensuring that the fan can operate stably under various harsh conditions;

[0049] 2. The adjustable components allow users to flexibly adjust the airflow direction and volume of the fan as needed, meeting the usage requirements in different scenarios.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight, volute-less centrifugal fan, characterized in that: Includes a bracket (1), a front plate (2) is fixedly connected to the front side of the bracket (1), an adjustment component (3) is fixedly connected to the front plate (2), the adjustment component (3) includes three sets of fixing rods (31), one end of the fixing rods (31) is slidably connected to a wind hood mechanism (32), the wind hood mechanism (32) includes a front frame (321) and a rear frame (322), and a baffle (323) is rotatably connected between the front frame (321) and the rear frame (322).

2. The lightweight volute-less centrifugal fan according to claim 1, characterized in that: Three sets of connecting mechanisms (33) are provided between the front frame (321) and the rear frame (322), and the connecting mechanism (33) includes a mounting plate (331).

3. The lightweight volute-less centrifugal fan according to claim 2, characterized in that: A spring (332) is fixedly connected to one side of the mounting plate (331), and a mounting block (333) is fixedly connected to one end of the spring (332).

4. The lightweight volute-less centrifugal fan according to claim 3, characterized in that: The mounting plate (331) is fixedly connected to the front frame (321), and the mounting block (333) is fixedly connected to the rear frame (322).

5. The lightweight volute-less centrifugal fan according to claim 1, characterized in that: The fixing rod (31) and the connecting mechanism (33) are slidably connected. One end of the fixing rod (31) is fixedly connected to a fixing clip (34), which is used to clamp the mounting block (333).

6. The lightweight volute-less centrifugal fan according to claim 1, characterized in that: A motor bracket (101) is fixedly connected to the rear side of the bracket (1), and reinforcing ribs (102) are fixedly connected to both sides of the motor bracket (101). Ribs (103) are provided on the inner side of the reinforcing ribs (102).

7. The lightweight volute-less centrifugal fan according to claim 6, characterized in that: The motor bracket (101) is fixedly connected to the top of the motor (4), and the output end of the motor (4) is fixedly connected to the impeller (5).

8. The lightweight volute-less centrifugal fan according to claim 1, characterized in that: The other end of the fixed rod (31) is fixedly connected to a wind guide shroud (35), one end of which extends into the impeller inlet (6).

9. The lightweight volute-less centrifugal fan according to claim 1, characterized in that: The baffle (323) is provided with an opening (7) for air outlet.

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