Axial flow fan

Abstract

The utility model discloses an axial flow fan, which comprises a barrel body, the motor is arranged in the cylinder body; the output end of the motor is connected with the fan blades; a net cover is detachably connected to the end face of the barrel, fixing arms are distributed on the net cover in the circumferential direction, connecting holes are formed in the fixing arms and comprise guide holes and arc-shaped limiting holes, the guide holes are communicated with the arc-shaped limiting holes, a limiting pin is arranged on the end face of the barrel and comprises a limiting part and a blocking part, and the blocking part is arranged on the limiting part. The section diameter of the blocking part is larger than that of the limiting part, the guide hole corresponds to the blocking part, and the arc-shaped limiting hole corresponds to the limiting part. The net cover is novel in structure, easy to disassemble and assemble, labor-saving, convenient and high in practicability.

Description

Technical Field

[0001] This utility model belongs to the field of axial flow fan technology, and in particular relates to an axial flow fan. Background Technology

[0002] Axial flow fans are those that direct airflow in the same direction as the axis of the fan blades. They can be used for ventilation in large spaces such as factories, warehouses, and stadiums, and have a wide range of applications.

[0003] In existing axial flow fans, the screens at the front and rear of the cylinder are fixed by bolts, which require tools to disassemble and assemble. This is troublesome, laborious and inconvenient, and the subsequent stripping of threads will affect the tightness.

[0004] Existing patent document (publication number: CN220646227U) discloses "an axial flow fan", in which the front and rear screens are both connected and fixed to the cylinder by bolts, which also has the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art and to provide an axial flow fan with a novel structure, simple mesh cover assembly and disassembly, labor-saving and convenient, and strong practicality.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An axial flow fan includes: a cylindrical body; a motor housed within the cylindrical body; and fan blades connected to the output end of the motor. The fan is characterized by: a detachable mesh cover attached to the end face of the cylindrical body; fixed arms circumferentially distributed on the mesh cover; connecting holes on the fixed arms, each connecting hole including a guide hole and an arc-shaped limiting hole; the guide hole communicating with the arc-shaped limiting hole; and a limiting pin on the end face of the cylindrical body, comprising a limiting portion and a blocking portion; the blocking portion being located on the limiting portion, with a cross-sectional diameter larger than that of the limiting portion; the guide hole corresponding to the blocking portion; and the arc-shaped limiting hole corresponding to the limiting portion. This axial flow fan features a novel structure, simple mesh cover assembly and disassembly, ease of use, and strong practicality.

[0008] Furthermore, the cylinder is equipped with a fixed channel, within which a semiconductor cooling chip is installed. The cold end of the semiconductor cooling chip extends into the cylinder and is located in front of the fan blades. When an external power source is connected, the cold end of the semiconductor cooling chip cools the air inside the cylinder, lowering the air temperature. The airflow generated by the rotating fan blades then blows the cool air outwards, resulting in a good cooling effect on the external environment.

[0009] Furthermore, the thermoelectric cooling chip is fixed in the fixed channel by bolts, which is reliable, easy to install and remove, and can be used immediately after installation. It is also convenient for maintenance and replacement, and is flexible and convenient.

[0010] Furthermore, the cylinder is connected to a threaded limit pin, which is detachable and replaceable, and can be used immediately after installation. The distance between the blocking part and the end face of the cylinder can be adjusted by rotating it inward and outward, thus adapting to mesh covers of different thicknesses and ensuring the stability of the mesh cover after installation, making it highly adaptable.

[0011] Furthermore, a support base is provided at the bottom of the cylinder, and the support base has a mounting through hole for easy placement and high stability. Nails are driven into the mounting through hole to fix the support base to the mounting surface, preventing the cylinder from shaking and improving the stability of the fan during operation.

[0012] Furthermore, the support base is connected to the end face of the cylinder via end bolts. A nut is attached to the end bolt, and the nut, in conjunction with the end bolt, locks the support base to the end face of the cylinder. The support base is detachable, allowing for convenient and flexible installation and use.

[0013] Furthermore, the motor is equipped with a fixed bracket, the outer end of which is fixed to the inner wall of the cylinder with bolts. The fixing is reliable, easy to disassemble and assemble, and can be used immediately after installation. After removing the fixed bracket, the motor can be taken out for inspection and replacement of the motor and fan blades, which is flexible and convenient.

[0014] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0015] 1. The mesh cover is easy to assemble and disassemble, replacing the bolt connection method. It is labor-saving and quick. Pass the blocking part through the guide hole, and then rotate the mesh cover so that the limiting part is locked into the arc-shaped limiting hole. The guide hole and the blocking part are misaligned. The blocking part prevents the mesh cover from detaching from the cylinder, so that the mesh cover is limited on the end face of the cylinder. It is stable, reliable and not easy to fall off freely.

[0016] 2. When the external power supply is connected, the cold end of the semiconductor cooling chip cools the air inside the cylinder, and the air generated by the fan blades blows the low-temperature air outward, which has a good cooling effect on the external environment. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention;

[0019] Figure 2 for Figure 1 The main view;

[0020] Figure 3 This is a schematic diagram of the connection between the motor and the cylinder in Example 1;

[0021] Figure 4 This is a schematic diagram of the mesh cover structure in Example 1;

[0022] Figure 5This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0023] Figure 6 This is a schematic diagram of the connection between the semiconductor cooling chip and the cylinder in Example 2.

[0024] In the diagram: 1-Cylinder; 2-Motor; 3-Fan blade; 4-Fixed bracket; 5-Net cover; 6-Fixed arm; 7-Connecting hole; 8-Guide hole; 9-Arc-shaped limiting hole; 10-Limiting pin; 11-Limiting part; 12-Blocking part; 13-Threaded groove; 14-Support base; 15-Mounting through hole; 16-Fixed channel; 17-Semiconductor cooling chip. Detailed Implementation

[0025] like Figures 1 to 4 The image shown is an embodiment of this utility model.

[0026] An axial flow fan includes: a cylinder 1 and a motor 2. The model of the motor 2 can be Y2-80M2-4S150. The output end of the motor 2 is connected to the fan blades 3. The motor 2 is provided with a fixed bracket 4. The outer end of the fixed bracket 4 is fixed to the inner wall of the cylinder 1 by bolts. The fixing is reliable, the disassembly and assembly are convenient, and it can be used immediately after installation. After removing the fixed bracket 4, the motor 2 can be taken out for inspection and replacement of the motor 2 and the fan blades 3, which is flexible and convenient.

[0027] A mesh cover 5 is detachably connected to the end face of the cylinder 1. Fixed arms 6 are distributed circumferentially on the mesh cover 5. The fixed arms 6 are provided with connecting holes 7. The connecting holes 7 include guide holes 8 and arc-shaped limiting holes 9. The guide holes 8 and arc-shaped limiting holes 9 are connected. A limiting pin 10 is provided on the end face of the cylinder 1. The limiting pin 10 includes a limiting part 11 and a blocking part 12. The blocking part 12 is provided on the limiting part 11. The cross-sectional diameter of the blocking part 12 is larger than the cross-sectional diameter of the limiting part 11. The guide holes 8 correspond to the blocking part 12, and the arc-shaped limiting holes 9 correspond to the limiting part 11.

[0028] The mesh cover 5 is easy to assemble and disassemble, replacing the bolt connection method, which is labor-saving and quick. The blocking part 12 is passed through the guide hole 8, and then the mesh cover 5 is rotated so that the limiting part 11 is inserted into the arc-shaped limiting hole 9. The guide hole 8 and the blocking part 12 are misaligned. The blocking part 12 prevents the mesh cover 5 from detaching from the cylinder 1, so that the mesh cover 5 is limited on the end face of the cylinder 1, which is stable, reliable and not easy to fall off freely.

[0029] The end face of the cylinder 1 is provided with a threaded groove 13, and the limiting part 11 is provided with an external thread that engages with the threaded groove 13 to achieve a threaded connection between the two. The limiting pin 10 is detachable and replaceable, and can be used immediately after installation. The distance between the blocking part 12 and the end face of the cylinder 1 can be adjusted by rotating it inward and outward, thereby adapting to the mesh cover 5 of different thicknesses, ensuring the stability of the mesh cover 5 after installation, and making it highly adaptable.

[0030] The bottom of the cylinder 1 is symmetrically equipped with support seats 14, which facilitates placement and ensures high stability. The support seats 14 are provided with mounting through holes 15. By driving nails into the mounting through holes 15, the support seats 14 are fixed to the mounting surface, preventing the cylinder 1 from shaking and improving the stability of the fan during operation.

[0031] The support base 14 is connected to the end face of the cylinder 1 by end bolts. A nut is attached to the end bolt, and the nut, together with the end bolt, locks the support base 14 to the end face of the cylinder 1. The support base 14 is detachable, can be installed and used immediately, and is flexible and convenient.

[0032] like Figure 5 and Figure 6 The image shown is a second embodiment of this utility model.

[0033] Under the technical solution based on Embodiment 1, a fixed channel 16 is provided on the peripheral wall of the cylinder 1. The outlet of the fixed channel 16 is connected to the outside. A semiconductor cooling chip 17 is fixedly connected in the fixed channel 16 by bolts. The fixed channel 16 is reliable, easy to disassemble and assemble, and can be used immediately after installation. It is convenient to inspect and replace the semiconductor cooling chip 17, and is flexible and convenient.

[0034] The cold end of the semiconductor cooling chip 17 extends into the cylinder 1 and is located in front of the fan blade 3, while the hot end of the semiconductor cooling chip 17 is located at the outlet of the fixed channel 16.

[0035] When the external power supply is connected, the cold end of the semiconductor cooling chip 17 cools the air inside the cylinder 1, and the wind generated by the rotation of the fan blade 3 blows the low-temperature air outward, which has a good cooling effect on the external environment. The heat generated by the hot end of the semiconductor cooling chip 17 is discharged outward.

[0036] 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. An axial flow fan, comprising: cylindrical body; The motor is located inside the cylinder. Fan blades, the output end of the motor is connected to the fan blades; Its features are: A mesh cover is detachably connected to the end face of the cylinder. The mesh cover has fixed arms distributed circumferentially. The fixed arms are provided with connecting holes. The connecting holes include guide holes and arc-shaped limiting holes. The guide holes are connected to the arc-shaped limiting holes. A limiting pin is provided on the end face of the cylinder. The limiting pin includes a limiting part and a blocking part. The blocking part is provided on the limiting part. The cross-sectional diameter of the blocking part is larger than that of the limiting part. The guide holes correspond to the blocking parts, and the arc-shaped limiting holes correspond to the limiting parts.

2. An axial flow fan according to claim 1, characterized in that: The cylinder is provided with a fixed channel, and a semiconductor cooling chip is provided in the fixed channel. The cold end of the semiconductor cooling chip extends into the cylinder and is located in front of the fan blade.

3. An axial flow fan according to claim 2, characterized in that: The semiconductor cooling chip is fixed in the fixed channel by bolts.

4. An axial flow fan according to claim 1, characterized in that: The cylinder is threadedly connected to the limiting pin.

5. An axial flow fan according to claim 1, characterized in that: The bottom of the cylinder is provided with a support base, and the support base is provided with an installation through hole.

6. An axial flow fan according to claim 5, characterized in that: The support base is connected to the end face of the cylinder by an end bolt. A nut is connected to the end bolt, and the nut cooperates with the end bolt to lock the support base to the end face of the cylinder.

7. An axial flow fan according to claim 1, characterized in that: The motor is provided with a fixed bracket, and the outer end of the fixed bracket is fixed to the inner wall of the cylinder by bolts.

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