Self-heat-dissipation structure of axial flow fan

Abstract

The utility model discloses a self-heat-dissipation structure of an axial flow fan. The self-heat-dissipation structure comprises an axial flow fan body, a driving structure, a heat dissipation structure and a protection structure. By arranging the driving structure and the heat dissipation structure, the driving motor can drive the fan blades to rotate through the transmission assembly, suction force can be generated after the fan blades rotate to convey high-temperature gas to the left end of the fan barrel from the right end of the fan barrel, and in the process that the high-temperature gas is conveyed to the left end of the fan barrel from the right end of the fan barrel, heat dissipation is achieved. At the moment, the air pressure inside the fan barrel is in a low-pressure state relative to the outside of the fan barrel, according to the principle that air flows from a high-pressure area to a low-pressure area, airflow outside the fan barrel can enter the fan barrel along the ventilation holes and the flow guide holes, and when the airflow passes through the ventilation holes, the motor can be cooled; and meanwhile, the motor is arranged outside the fan barrel, the motor can be effectively prevented from making contact with high-temperature gas in the fan barrel, heat dissipation is conducted on the surface of the motor through external air, and therefore self-heat dissipation can be effectively conducted on the motor.

Description

Technical Field

[0001] The utility model relates to the field of axial flow fans, in particular to a self-heating structure of an axial flow fan. Background Art

[0002] An axial flow fan is a type of fan in which the direction of the airflow is in the same direction as the axis of the fan blades. For example, electric fans and air conditioner outdoor fans are axial flow fans.

[0003] China's authorization announcement number CN220337099U discloses an axial flow fan, including a fan blade assembly, multiple supports, a motor, a cylindrical shell and a fixing mechanism, the fixing mechanism including a first screw, a first fixing assembly, multiple second screws and a second fixing assembly, the first screw is threadedly connected to the motor, the first fixing assembly is slidably connected to the motor, the multiple second screws are respectively threadedly connected to the cylindrical shell, the second fixing assembly is slidably connected to the cylindrical shell, and is slidably connected to the motor through the support member, and then slidably connected to the cylindrical shell through the support member, and finally the support member is supported and fixed by the fixing assembly, which effectively solves the problem that when fixing the motor, more bolts need to be used on the support member to connect and fix the motor and the cylindrical shell, making the fixing process very time-consuming and labor-intensive.

[0004] Although this device facilitates the fixing of the motor, it places the motor inside a cylindrical housing. When the fan is conveying high-temperature gas, the surface of the motor will generate high temperatures, seriously affecting the heat dissipation of the motor and easily causing damage to the motor. To address the above defects, we propose a self-heating structure for axial flow fans. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a self-heating structure for an axial flow fan.

[0006] In order to solve the problems existing in the prior art, the present invention adopts the following technical solution: a self-heating structure of an axial flow fan, comprising:

[0007] An axial flow fan body, the axial flow fan body comprising a fan cylinder, fan blades arranged inside the fan cylinder, and a support structure arranged inside the fan cylinder for supporting the fan blades;

[0008] A drive structure comprising a motor, a transmission assembly disposed inside the fan cylinder, and an assembly disposed on the surface of the fan cylinder for assembling the motor;

[0009] The assembly component includes an assembly flange fixedly mounted on the surface of the fan cylinder, and a connecting flange fixedly mounted on the surface of the motor, and bolt holes are provided on the surfaces of the assembly flange and the connecting flange;

[0010] A heat dissipation structure is provided on the surface of the fan cylinder, comprising a plurality of ventilation holes equidistantly provided on the upper end of the motor housing, and a plurality of guide holes equidistantly provided on the upper surface of the mounting flange, and the guide holes extend into the interior of the fan cylinder;

[0011] The protective structure is arranged inside the fan cylinder and is used to protect the transmission component from dust.

[0012] Preferably, the support structure includes a support frame fixedly mounted on the inner wall of the fan barrel, a bearing seat fixedly mounted on the inner wall of the fan barrel through the support frame, and a rotating shaft rotatably connected to the inner wall of the bearing seat.

[0013] Preferably, the protective structure includes a support rod fixedly mounted on the inner wall of the fan cylinder, a protective cover fixedly mounted on the inner wall of the fan cylinder via the support rod, and a cover plate fixedly mounted on the left end of the protective cover via bolts.

[0014] Preferably, the transmission assembly includes a first helical gear and a second helical gear respectively rotatably mounted on the inner wall of the protective cover, and the left end of the rotating shaft is fixedly connected to the connecting end of the first helical gear.

[0015] Preferably, the first helical gear and the second helical gear are meshed for transmission.

[0016] Preferably, the output end of the motor is fixedly connected to a connecting shaft, the lower end of the connecting shaft extends to the interior of the fan cylinder and is fixedly connected to the mounting end of the second bevel gear.

[0017] Preferably, the central axes of the guide hole and the ventilation hole are on the same central axis.

[0018] Preferably, the connecting end of the fan blade is fixedly connected to the right end of the rotating shaft.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. By setting a driving structure and a heat dissipation structure, the motor is installed on the assembly flange using an assembly component, and then the driving motor uses the transmission component to drive the fan blades to rotate. When the fan blades rotate, suction is generated to transport the high-temperature gas from the right end of the fan cylinder to the left end of the fan cylinder. In the process of transporting the high-temperature gas from the right end of the fan cylinder to the left end of the fan cylinder, the air pressure inside the fan cylinder is in a low-pressure state relative to the outside of the fan cylinder. According to the principle that gas flows from a high-pressure area to a low-pressure area, the air outside the fan cylinder will enter the fan cylinder along the ventilation holes and the guide holes. When the airflow passes through the ventilation holes, it will dissipate heat to the motor. At the same time, arranging the motor outside the fan cylinder can effectively isolate the motor from contacting the high-temperature gas in the fan cylinder, and use the outside air to dissipate heat to the motor surface, thereby effectively self-cooling the motor. Compared with the existing technology, the device effectively reduces the cost while dissipating the heat of the motor.

[0021] 2. By setting up a protective structure, the first helical gear and the second helical gear can be covered in the protective cover by utilizing the cooperation of the protective cover and the cover plate, thereby preventing dust in the airflow from contacting the first helical gear and the second helical gear, and effectively protecting the first helical gear and the second helical gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings described herein are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation. In the accompanying drawings:

[0023] Figure 1 This is a three-dimensional first-view schematic diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of a three-dimensional second viewing angle of the present invention;

[0025] Figure 3 This is a schematic diagram of a three-dimensional third-viewing angle of the present invention;

[0026] Figure 4 It is a front cross-sectional schematic diagram of the utility model;

[0027] Figure 5 for Figure 4 Enlarged schematic diagram of point A in the middle.

[0028] Serial numbers in the figure: 10 fan cylinder, 11 fan blades, 20 motor, 30 assembly flange, 31 connecting flange, 40 ventilation hole, 41 guide hole, 50 support frame, 51 bearing seat, 52 rotating shaft, 60 support rod, 61 protective cover, 62 cover plate, 70 first helical gear, 71 second helical gear, 80 connecting shaft. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0030] Please refer to Figure 1-5 The utility model provides a technical scheme: a self-heat dissipation structure of an axial flow fan, comprising: an axial flow fan body, a driving structure, a heat dissipation structure and a protective structure.

[0031] The axial flow fan body comprises a fan cylinder 10, a fan blade 11 arranged inside the fan cylinder 10, and a support structure arranged inside the fan cylinder 10 for supporting the fan blade 11, wherein the support structure comprises a support frame 50 fixedly installed on the inner wall of the fan cylinder 10, a bearing seat 51 fixedly installed on the inner wall of the fan cylinder 10 through the support frame 50, and a rotating shaft 52 rotatably connected to the inner wall of the bearing seat 51, and the connecting end of the fan blade 11 is fixedly connected to the right end of the rotating shaft 52, so that the fan blade 11 can be driven to rotate when the rotating shaft 52 rotates.

[0032] The driving structure comprises a motor 20, a transmission assembly arranged inside the fan cylinder 10, and an assembly assembly arranged on the surface of the fan cylinder 10 for assembling the motor 20.

[0033] The protective structure is arranged inside the fan cylinder 10 and is used for dustproofing the transmission assembly, and the protective structure comprises a support rod 60 fixedly installed on the inner wall of the fan cylinder 10, a protective cover 61 fixedly installed on the inner wall of the fan cylinder 10 through the support rod 60, and a cover plate 62 fixedly installed on the left end of the protective cover 61 through bolts.

[0034] The transmission assembly comprises a first helical gear 70 and a second helical gear 71 rotatably installed on the inner wall of the protective cover 61, and the left end of the rotating shaft 52 is fixedly connected to the connecting end of the first helical gear 70, the first helical gear 70 and the second helical gear 71 are in meshing transmission, the first helical gear 70 and the second helical gear 71 can be covered in the protective cover 61 by cooperation of the protective cover 61 and the cover plate 62, so that the dust in the airflow can be prevented from contacting the first helical gear 70 and the second helical gear 71, the first helical gear 70 and the second helical gear 71 can be effectively protected, and the first helical gear 70 and the second helical gear 71 can be maintained by opening the cover plate 62.

[0035] The assembly assembly comprises an assembly flange 30 fixedly installed on the surface of the fan cylinder 10 and a connecting flange 31 fixedly installed on the surface of the motor 20, bolt holes are formed in the surfaces of the assembly flange 30 and the connecting flange 31, the motor 20 can be installed on the fan cylinder 10 after the assembly flange 30 and the connecting flange 31 are fixedly integrated by bolts, the motor 20 arranged outside the fan cylinder 10 can effectively isolate the high-temperature gas in the fan cylinder 10, and the surface of the motor 20 can be cooled by external air, so that the motor 20 can be effectively self-cooled.

[0036] The output end of the motor 20 is fixedly connected to a connecting shaft 80, the lower end of the connecting shaft 80 extends to the interior of the fan barrel 10, and is fixedly connected to the mounting end of the second bevel gear 71, driving the motor 20 to rotate. The transmission of the connecting shaft 80 can drive the first bevel gear 70 and the second bevel gear 71 to engage and transmit, thereby driving the rotating shaft 52 and the fan blades 11 to rotate.

[0037] The heat dissipation structure is arranged on the surface of the fan barrel 10, which includes a plurality of ventilation holes 40 equidistantly opened on the upper end of the motor 20 casing, and a plurality of guide holes 41 equidistantly opened on the upper surface of the mounting flange 30, and the guide holes 41 extend into the interior of the fan barrel 10, and the ventilation holes 40 penetrate to the bottom of the motor 20. The central axes of the guide holes 41 and the ventilation holes 40 are on the same central axis. When the motor 20 is installed on the fan barrel 10, the guide holes 41 and the ventilation holes 40 are connected to each other.

[0038] The driving motor 20 can drive the connecting shaft 80 and the second bevel gear 71 to rotate, and the fan blades 11 can be driven to rotate by the meshing transmission of the first bevel gear 70 and the second bevel gear 71. When the fan blades 11 rotate, suction will be generated to transport the high-temperature gas from the right end of the fan cylinder 10 to the left end of the fan cylinder 10.

[0039] During the process of high-temperature gas being transported from the right end of the fan barrel 10 to the left end of the fan barrel 10, the air pressure inside the fan barrel 10 is in a low-pressure state relative to the outside of the fan barrel 10. According to the principle that gas flows from a high-pressure area to a low-pressure area, the airflow outside the fan barrel 10 will enter the fan barrel 10 along the ventilation holes 40 and the guide holes 41. When the airflow passes through the ventilation holes 40, the motor 20 will be cooled. Compared with the existing technology, the device effectively reduces the manufacturing cost while dissipating the heat of the motor 20.

[0040] Specifically, the working principle and operation method of the utility model are as follows:

[0041] First, place the motor 20 on the mounting flange 30, and then use bolts to fix the mounting flange 30 and the connecting flange 31 together, so that the motor 20 can be installed on the fan cylinder 10. At this time, the guide hole 41 and the ventilation hole 40 are connected to each other.

[0042] The driving motor 20 drives the connecting shaft 80 and the second bevel gear 71 to rotate. The first bevel gear 70 and the second bevel gear 71 are meshed and driven to drive the fan blades 11 to rotate. When the fan blades 11 rotate, suction is generated to transport the high-temperature gas from the right end of the fan cylinder 10 to the left end of the fan cylinder 10. Placing the motor 20 outside the fan cylinder 10 can effectively isolate the motor 20 from contacting the high-temperature gas inside the fan cylinder 10, and use the outside air to dissipate heat from the surface of the motor 20.

[0043] In the process of high-temperature gas being transported from the right end of the fan cylinder 10 to the left end of the fan cylinder 10, at this time, the air pressure inside the fan cylinder 10 is in a low pressure state relative to the outside of the fan cylinder 10, according to the principle that gas flows from a high pressure area to a low pressure area, the airflow outside the fan cylinder 10 will enter the fan cylinder 10 along the ventilation hole 40 and the flow guide hole 41, when the airflow passes through the ventilation hole 40, the motor 20 will be cooled.

[0044] The above merely provides the preferred embodiments of the present application, and the protection scope of the present application is not limited to this. Any person skilled in the art should be covered in the protection scope of the present application according to the technical scheme and the conception of the present application, which is equivalent to replacement or change.

Claims

1. A self-heating structure of an axial flow fan, characterized in that: include: An axial flow fan body, the axial flow fan body comprising a fan barrel (10), a fan blade (11) arranged inside the fan barrel (10), and a support structure arranged inside the fan barrel (10) for supporting the fan blade (11); A drive structure comprising a motor (20), a transmission assembly arranged inside the fan cylinder (10), and an assembly arranged on the surface of the fan cylinder (10) for assembling the motor (20); The assembly assembly includes an assembly flange (30) fixedly mounted on the surface of the fan cylinder (10), and a connecting flange (31) fixedly mounted on the surface of the motor (20), and bolt holes are provided on the surfaces of the assembly flange (30) and the connecting flange (31); A heat dissipation structure, the heat dissipation structure being arranged on the surface of the fan barrel (10), comprising a plurality of ventilation holes (40) equidistantly provided on the upper end of the motor (20) housing, and a plurality of guide holes (41) equidistantly provided on the upper surface of the mounting flange (30), wherein the guide holes (41) extend into the interior of the fan barrel (10); A protective structure is provided inside the fan cylinder (10) and is used to protect the transmission component from dust.

2. The self-heating structure of an axial flow fan according to claim 1, characterized in that: The support structure comprises a support frame (50) fixedly mounted on the inner wall of the fan cylinder (10), a bearing seat (51) fixedly mounted on the inner wall of the fan cylinder (10) via the support frame (50), and a rotating shaft (52) rotatably connected to the inner wall of the bearing seat (51).

3. The self-heating structure of an axial flow fan according to claim 1, characterized in that: The protective structure comprises a support rod (60) fixedly mounted on the inner wall of the fan cylinder (10), a protective cover (61) fixedly mounted on the inner wall of the fan cylinder (10) via the support rod (60), and a cover plate (62) fixedly mounted on the left end of the protective cover (61) via bolts.

4. The self-heating structure of an axial flow fan according to claim 2, characterized in that: The transmission assembly comprises a first helical gear (70) and a second helical gear (71) which are rotatably mounted on the inner wall of the protective cover (61), and the left end of the rotating shaft (52) is fixedly connected to the connecting end of the first helical gear (70).

5. The self-heating structure of an axial flow fan according to claim 4, characterized in that: The first helical gear (70) and the second helical gear (71) are meshed for transmission.

6. The self-heating structure of an axial flow fan according to claim 1, characterized in that: The output end of the motor (20) is fixedly connected to a connecting shaft (80), and the lower end of the connecting shaft (80) extends into the interior of the fan cylinder (10) and is fixedly connected to the mounting end of the second helical gear (71).

7. The self-heating structure of an axial flow fan according to claim 1, characterized in that: The central axes of the guide hole (41) and the ventilation hole (40) are located on the same central axis.

8. The self-heating structure of an axial flow fan according to claim 2, characterized in that: The connecting end of the fan blade (11) is fixedly connected to the right end of the rotating shaft (52).

Images