High-temperature-resistant axial flow cooling fan

Abstract

The utility model belongs to the technical field of axial flow fans, particularly relates to a high-temperature-resistant axial flow heat dissipation fan, and aims to solve the problems that an axial flow heat dissipation fan is usually provided with a protective cover, but the protective cover is mainly connected with a main frame through bolts, so that the protective cover is troublesome to clean and replace, and noise is large when the axial flow heat dissipation fan runs. According to the technical scheme, the device comprises a base cylinder, an L-shaped mounting frame is fixedly arranged on the inner wall of the base cylinder, a transmission rod is rotatably mounted on the outer wall of the L-shaped mounting frame, and a driving motor used for driving the transmission rod to rotate is fixedly mounted on the inner wall of the L-shaped mounting frame. When the noise reduction and stability augmentation structure is used, noise is reduced through the design of the noise reduction and stability augmentation structure, the operation stability of the draught fan is improved, and the service life of the draught fan is prolonged; due to the design of the quick release assembly, the protective cover shell is simple and quick to clean and replace, the whole fan does not need to be disassembled, and the maintenance cost and time are greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of axial flow fan technology, and in particular to a high-temperature resistant axial flow cooling fan. Background Technology

[0002] High-temperature resistant axial flow cooling fans are a special type of axial flow fan. Their main function is to promote airflow in high-temperature environments, thereby achieving heat dissipation. The working principle of an axial flow fan relies on the thrust generated by the rotation of the impeller, which causes air to flow axially. The impeller rotates at high speed driven by a motor, and the blades exert a force on the air. Under the push of the blades, the air flows from the fan's inlet to the outlet, forming a continuous airflow that carries away heat.

[0003] Currently, axial flow cooling fans are usually equipped with protective covers, but the connection between the protective cover and the main frame is mainly by bolt fixing, which makes cleaning and replacing the protective cover more troublesome, and the axial flow cooling fan is noisy when running.

[0004] To address the aforementioned problems, this utility model document proposes a high-temperature resistant axial flow cooling fan. Utility Model Content

[0005] This utility model provides a high-temperature resistant axial flow cooling fan, which solves the problems of existing technology where axial flow cooling fans are usually equipped with protective covers, but the connection between the protective cover and the main frame is mainly by bolt fixing, which makes it difficult to clean and replace the protective cover, and the axial flow cooling fan is noisy when running.

[0006] The utility model provides the following technical solutions:

[0007] High-temperature resistant axial flow cooling fan, including:

[0008] The base cylinder has an L-shaped mounting bracket fixedly installed on its inner wall, a transmission rod rotatably installed on the outer wall of the L-shaped mounting bracket, a drive motor for driving the transmission rod to rotate fixedly installed on the inner wall of the L-shaped mounting bracket, an impeller fixedly installed at the other end of the transmission rod, and a protective cover installed at the cylinder opening near the impeller of the base cylinder.

[0009] Quick-release components are located on the base and protective housing to facilitate cleaning and replacement of the protective housing;

[0010] The noise reduction and stabilization structure is located on the impeller to reduce noise during impeller rotation and improve operational stability.

[0011] In one possible design, the quick-release assembly includes three hooks fixedly arranged in a circular array on the outer wall of the protective cover, and a buckle is provided on the outer wall of the base tube to cooperate with the hooks, the hooks and the buckle forming a complete snap fastener structure.

[0012] In one possible design, three positioning rods are fixedly arranged in a ring array on the inner side of the protective cover, and slots for inserting the positioning rods are provided on the corresponding side of the base cylinder.

[0013] In one possible design, the noise reduction and stabilization structure includes a plurality of serrated holes disposed at the edge of the impeller blades, the plurality of serrated holes being equidistantly arranged.

[0014] In one possible design, a support base is fixedly installed at the bottom of the outer wall of the base cylinder, and each of the four corners of the support base is provided with a reserved mounting hole for reinforcement.

[0015] In one possible design, the impeller is made of aluminum alloy that will not spark when it rubs against the inner wall of the base cylinder.

[0016] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0017] The working principle and usage process of this technical solution are as follows:

[0018] In use, the high-temperature axial cooling fan is fixedly installed in the required position through the reserved mounting holes on the support base. Next, ensure that the protective cover is correctly installed on the base cylinder and fixed by the buckle structure formed by the hook and handle in the quick-release assembly. Check that the positioning rod is inserted into the corresponding slot to ensure the stability of the protective cover. Then, turn on the power of the drive motor and start the motor. The drive motor drives the impeller to start rotating through the transmission rod. When the impeller rotates at high speed, it generates airflow, which carries away heat from the inside of the equipment and achieves the heat dissipation effect. At the same time, the serrated hole design on the edge of the impeller blades makes the airflow velocity distribution more uniform, thereby reducing the impact and vibration between the blades and the gas, and thus reducing the generation of noise and vibration. In addition, in fluid dynamics, the serrated blades can form a shear layer, which makes there more friction between the airflow and the surface of the fan blades. This increases the resistance on the blade surface, making the airflow more turbulent, thereby increasing the momentum transferred between the blades and the airflow, which is beneficial to improving the efficiency and stability of the fan.

[0019] After prolonged use, if the protective cover needs to be cleaned or replaced, simply unfasten the latch structure in the quick-release assembly to easily remove the protective cover. After cleaning or replacement, reinstall the protective cover onto the base cylinder using the quick-release assembly.

[0020] This utility model has the following beneficial effects:

[0021] The serrated hole design on the edge of the impeller blades in this invention makes the airflow velocity distribution more uniform, thereby reducing the impact and vibration between the blades and the gas, and thus reducing noise and vibration, providing users with a quieter operating environment. Furthermore, the noise reduction and stabilization structure design not only reduces noise, but also helps to improve the operating stability of the fan and extend its service life.

[0022] The quick-release component design in this invention makes cleaning and replacing the protective cover simple and quick, without disassembling the entire fan, greatly reducing maintenance costs and time. The impeller is made of aluminum alloy material that will not rub against the inner wall of the base cylinder to generate sparks, ensuring the safe operation of the fan in high-temperature environments and avoiding safety hazards caused by friction sparks.

[0023] This invention has the advantages of high heat dissipation efficiency, low noise, easy maintenance and replacement, stable operation and safety and reliability, and is suitable for various occasions that require high temperature heat dissipation. Attached Figure Description

[0024] Figure 1 A three-dimensional structural schematic diagram of the high-temperature axial flow cooling fan provided in this embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of the high-temperature resistant axial flow cooling fan provided in the embodiment of this utility model;

[0026] Figure 3 A schematic diagram of the protective cover structure of the high-temperature axial flow cooling fan provided in this embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of the impeller and transmission rod separation structure of the high-temperature resistant axial flow cooling fan provided in this embodiment of the utility model.

[0028] Reference numerals in the attached drawings: 1. Base cylinder; 2. L-shaped mounting bracket; 3. Transmission rod; 4. Impeller; 5. Drive motor; 6. Support base; 7. Reserved mounting hole; 8. Protective cover; 9. Hook; 10. Buckle; 11. Positioning rod; 12. Slot; 13. Serrated hole. Detailed Implementation

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0032] Example 1

[0033] Please refer to Figure 1-4 High-temperature resistant axial flow cooling fans are used in the field of axial flow fans, including:

[0034] The base cylinder 1 serves as the main structure of the entire fan. An L-shaped mounting bracket 2 is fixedly installed on its inner wall. A transmission rod 3 is rotatably installed on the outer wall of the L-shaped mounting bracket 2. One end of the transmission rod 3 is connected to the L-shaped mounting bracket 2 through a bearing or other rotatable connecting parts to ensure smooth rotation. A drive motor 5 is fixedly installed on the inner wall of the L-shaped mounting bracket 2. The drive motor 5 drives the transmission rod 3 to rotate. An impeller 4 is fixedly installed at the other end of the transmission rod 3. When the drive motor 5 is working, it drives the impeller 4 to rotate at high speed through the transmission rod 3, thereby generating airflow.

[0035] A protective cover 8 is provided at the inlet of the base cylinder 1 near the impeller 4. Its main function is to protect the impeller 4 from direct impact from external objects, and it also helps to guide the direction of airflow. A support base 6 is also fixedly provided at the bottom of the outer wall of the base cylinder 1 to support the entire fan. The four corners of the support base 6 are provided with reserved mounting holes 7 to facilitate the fixed installation of the fan in the required position.

[0036] To facilitate the cleaning or replacement of the protective cover 8, this embodiment provides quick-release components on the base cylinder 1 and the protective cover 8. Specifically, three hooks 9 are fixedly arranged in a circular array on the outer wall of the protective cover 8 to engage with the handles 10 on the base cylinder 1. The outer wall of the base cylinder 1 is provided with handles 10 corresponding to the hooks 9. When the hooks 9 and handles 10 are engaged, a complete latch structure is formed, which firmly fixes the protective cover 8 to the base cylinder 1. When the protective cover 8 needs to be cleaned or replaced, it can be easily removed by simply unfastening the latch structure.

[0037] To further improve the stability of the fan and reduce noise, this embodiment also sets a noise reduction and stabilization structure on the impeller 4. Specifically, multiple equally spaced serrated holes 13 are set at the edge of the blades of the impeller 4. Since the raised serrated shape can guide the airflow to generate vortices, the airflow speed distribution is more uniform, thereby reducing the impact and vibration between the blades and the gas, and thus reducing the generation of noise and vibration.

[0038] Meanwhile, in fluid dynamics, serrated blades can form a shear layer, resulting in more friction between the airflow and the blade surface. This increases the drag on the blade surface, making the airflow more turbulent, thereby increasing the momentum transferred between the blade and the airflow. This is beneficial for improving the efficiency and stability of the fan. Furthermore, serrated blades generate tornado-like vortices during operation. These vortices help reduce the rotational speed of the airflow, making the flow more uniform, which in turn improves the efficiency and stability of the fan.

[0039] It should be noted that the impeller 4 in this embodiment is made of aluminum alloy that will not rub against the inner wall of the base cylinder 1 to generate sparks, so as to ensure the safe operation of the fan in a high-temperature environment.

[0040] Example 2

[0041] Improvements based on Example 1:

[0042] Please refer to Figure 2-3 The inner side of the protective cover 8 is fixedly provided with three positioning rods 11 in a ring array. The corresponding side of the base cylinder 1 is provided with a slot 12 for inserting the positioning rods 11. Through the cooperation of the positioning rods 11 and the slot 12, the base cylinder 1 and the protective cover 8 can be quickly aligned to further improve the installation efficiency of the protective cover 8.

[0043] However, as is well known to those skilled in the art, the working principle and wiring method of the drive motor 5 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0044] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. The embodiments of the present utility model and the features of the embodiments can be combined with each other unless there is a conflict. Therefore, the scope of protection of the present utility model shall be based on the scope of protection of the claims.

Claims

1. A high-temperature resistant axial flow cooling fan, characterized in that, include: A base cylinder (1) is provided with an L-shaped mounting bracket (2) fixedly installed on its inner wall. A transmission rod (3) is rotatably installed on the outer wall of the L-shaped mounting bracket (2). A drive motor (5) for driving the transmission rod (3) to rotate is fixedly installed on the inner wall of the L-shaped mounting bracket (2). An impeller (4) is fixedly installed at the other end of the transmission rod (3). A protective cover (8) is provided at the cylinder opening of the base cylinder (1) near the impeller (4). Quick-release components are provided on the base cylinder (1) and the protective cover (8) to facilitate the cleaning and replacement of the protective cover (8); The noise reduction and stabilization structure is installed on the impeller (4) to reduce the noise when the impeller (4) rotates and improve the operational stability. The quick-release assembly includes three hooks (9) fixedly arranged in a ring array on the outer wall of the protective cover (8), and a buckle (10) is provided on the outer wall of the base cylinder (1) to cooperate with the hooks (9). The hooks (9) and the buckle (10) form a complete buckle structure.

2. The high-temperature resistant axial flow cooling fan according to claim 1, characterized in that, The inner side of the protective cover (8) is fixedly provided with three positioning rods (11) in a ring array, and the corresponding side of the base cylinder (1) is provided with a slot (12) for inserting the positioning rods (11).

3. The high-temperature resistant axial flow cooling fan according to claim 1, characterized in that, The noise reduction and stabilization structure includes multiple serrated holes (13) disposed at the edge of the blade of the impeller (4), and the multiple serrated holes (13) are equidistantly arranged.

4. The high-temperature resistant axial flow cooling fan according to claim 1, characterized in that, A support base (6) is fixedly installed at the bottom of the outer wall of the base cylinder (1), and the four corners of the support base (6) are provided with reserved installation holes (7) for reinforcement.

5. The high-temperature resistant axial flow cooling fan according to claim 1, characterized in that, The impeller (4) is made of aluminum alloy that will not spark when it rubs against the inner wall of the base cylinder (1).

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