Axial flow fan

Abstract

The invention relates to an axial flow fan, and relates to the technical field of axial flow fans, the axial flow fan comprises a machine body, a motor, blades and a cooling mechanism, and the cooling mechanism comprises a supporting seat arranged on the machine body; the plurality of supporting balls are rotationally arranged on the supporting seat and are supported on the motor output shaft for positioning; the cooling sponge is arranged on the supporting seat, adsorbs cooling liquid and cools the output shaft of the motor; the liquid adding assembly is arranged on the supporting base and used for adding cooling liquid to the cooling sponge. Cooling liquid is smeared on the motor output shaft through the cooling sponge so as to cool the motor output shaft, the liquid adding assembly adds the cooling liquid to the cooling sponge, meanwhile, the multiple supporting balls support the motor output shaft, the risk that the motor output shaft generates vibration and noise is reduced, and the service life of the motor output shaft is prolonged. The axial flow fan is stable in air outlet and can stably operate in a high-temperature state.

Description

Technical Field

[0001] The present application relates to the technical field of axial flow fans, and in particular to an axial flow fan. Background Art

[0002] Axial flow fans are machines that rotate due to the rotational force of an external drive source such as a motor and blow air in an axial direction. They are not only suitable for home appliances such as electric fans, air conditioners and refrigerators, but are also widely used in a variety of fields such as space shuttles and engines.

[0003] Axial flow fans achieve gas flow by driving blades to rotate through motors. However, axial flow fans tend to heat up after running for a long time, which makes the motor output shaft easily deformed due to heat, thereby increasing the risk of vibration and noise in the axial flow fan. Summary of the invention

[0004] In order to reduce the risk of vibration and noise of an axial flow fan, the present application provides an axial flow fan.

[0005] The present application provides an axial flow fan, which adopts the following technical solution: An axial flow fan comprises a body, a motor arranged on the body, blades arranged on an output shaft of the motor, and a cooling mechanism arranged on the body and used to cool the output shaft of the motor, wherein the cooling mechanism comprises: A support seat, arranged on the machine body; A plurality of supporting balls are rotatably arranged on a supporting seat and supported on an output shaft of the motor for positioning; A cooling sponge is arranged on the support seat and adsorbs a cooling liquid, the motor output shaft is pressed against the cooling sponge and the cooling liquid is applied to the motor output shaft for cooling; The liquid adding component is arranged on the supporting seat and is used for adding the cooling liquid to the cooling sponge.

[0006] By adopting the above technical solution, the cooling sponge is pressed against the motor output shaft, and the cooling sponge applies coolant to the motor output shaft to cool the motor output shaft. The motor output shaft rotates so that the part that is not in contact with the cooling sponge continues to contact with the cooling sponge for cooling, and the liquid adding component adds coolant to the cooling sponge. At the same time, multiple support balls support the motor output shaft. Therefore, the cooperation of the support balls and the cooling sponge can greatly reduce the probability of deformation of the motor output shaft due to heat, and reduce the risk of vibration and noise of the motor output shaft, so that the axial fan has stable air output and can run stably under high temperature conditions.

[0007] At the same time, the coolant is applied to the motor output shaft through the cooling sponge, so that the amount of coolant on the motor output shaft is moderate. Compared with directly applying the coolant to the motor output shaft, the cooling sponge can greatly reduce the risk of coolant waste and leakage, save coolant and reduce the risk of coolant leakage and environmental pollution. Moreover, the cooling sponge has a simple and stable structure, and the cooling sponge contacts with part of the motor output shaft. When the motor is not running, the cooling sponge only contacts with part of the motor output shaft, that is, there is coolant at the contact point between the cooling sponge and the motor output shaft, and there is no coolant at other parts of the motor output shaft, thereby further reducing the waste of coolant.

[0008] Optionally, the liquid adding component includes: A liquid box, which is arranged on the support seat and located below the motor output shaft and is filled with cooling liquid; A plurality of capillary adsorption members are arranged on the cooling sponge and extend downward into the liquid box and absorb and transport the cooling liquid to the cooling sponge under the action of capillary force.

[0009] By adopting the above technical solution, the coolant in the liquid box is adsorbed and transported to the cooling sponge through multiple capillary adsorption parts. The cooling sponge itself has a certain capillary force, so that the transported coolant can continue to move in the cooling sponge for replenishment, so that the coolant can be continuously applied to the motor output shaft.

[0010] As the coolant loss on the cooling sponge increases, multiple capillary adsorption parts accelerate the adsorption and transportation effect of the coolant, so that sufficient coolant can be maintained in the cooling sponge to cool the motor output shaft; conversely, when there is more coolant in the cooling sponge, the capillary adsorption parts can slow down the absorption and transportation of the coolant, thereby maintaining a better cooling effect on the motor output shaft, reducing the risk of vibration and noise in the motor while also reducing the waste of coolant.

[0011] At the same time, the liquid box is located below the motor output shaft, and the coolant is absorbed and transported upward to the cooling sponge through multiple capillary adsorption parts. Compared with adding coolant downward to the motor output shaft under the action of gravity, the present application reduces the risk of coolant leakage downward. If a pump body is used, the cost and energy efficiency of the fan are increased. Therefore, the present application can achieve cooling of the motor output shaft while also reducing the risk of coolant leakage, the cost and energy consumption of the fan.

[0012] Optionally, a mounting assembly is provided on the support seat, a plurality of sliding holes are provided at intervals on the upper surface of the liquid box, and the mounting assembly includes: The mounting plate is vertically slidably mounted on the sliding hole through the plurality of guide tubes, and the plurality of capillary adsorption members are clamped and mounted on the inner side walls of the plurality of guide tubes so that the cooling sponge is pressed against the mounting plate for positioning and extends downward into the cooling liquid in the liquid box; The elastic member is arranged on the support seat and connected with the mounting plate and pushes the cooling sponge to press against the output shaft of the motor.

[0013] By adopting the above technical solution, the elastic member can push the mounting plate close to the motor output shaft, so that the cooling sponge is close to and pressed against the motor output shaft, thereby further improving the cooling effect on the motor output shaft and reducing the risk of motor vibration and noise; at the same time, multiple capillary adsorption members can be respectively clamped and installed on multiple guide tubes, so that multiple capillary adsorption members extend downward into the coolant in the liquid box, and the cooling sponge is pressed against the mounting plate, thereby realizing the replacement of the cooling sponge and the capillary adsorption member. Therefore, the cooperation between the mounting plate and the elastic member can further reduce the risk of motor vibration and noise, and at the same time realize the replacement of the cooling sponge and the capillary adsorption member.

[0014] Because the cooling sponge and capillary adsorbent are made of soft materials, they will be squeezed and deformed when subjected to force, making it difficult for them to move vertically. The mounting plate and multiple guide tubes can realize the installation of the cooling sponge and multiple capillary adsorbents and can realize the vertical movement of the two, thereby further reducing the risk of vibration and noise in the motor.

[0015] Optionally, the support seat is detachably mounted on the machine body, and a plurality of the support balls are located around the cooling sponge.

[0016] By adopting the above technical solution, the installation and replacement of the cooling mechanism can be realized. At the same time, multiple supporting balls can be evenly supported on the motor output shaft located on the peripheral side of the cooling sponge, so that the supporting force of the motor output shaft on the cooling sponge is more uniform, thereby reducing the risk of local deformation of the cooling sponge and further reducing the risk of vibration and noise of the motor.

[0017] Optionally, a mounting tube is arranged on the upper surface of the liquid box, and the mounting plate and the cooling sponge are vertically slidably arranged on the inner wall of the mounting tube so that the plurality of sliding holes are located on the inner side of the mounting tube.

[0018] By adopting the above technical solution, the mounting tube can guide the mounting plate and the cooling sponge when they move, thereby improving the stability of the two when they move. At the same time, the mounting tube can cover multiple sliding holes inside, so when the coolant at the sliding hole leaks, it will enter the mounting tube, and then the coolant will continue to move to the cooling sponge to be absorbed, further reducing the risk of coolant leakage.

[0019] Optionally, a mounting plate is provided on the machine body, the motor is provided on a side wall of the mounting plate on a side away from the cooling mechanism, and the output shaft passes through the mounting plate on a side close to the cooling mechanism, and a fluid replenishment component connected to the fluid box is provided on the mounting plate, and the fluid replenishment component includes: A refilling ring is arranged on the mounting plate so that the motor output shaft coaxially passes through the refilling ring and is located on the side of the cooling sponge close to the motor, the mounting plate is provided with a plurality of ventilation holes inclined toward the motor, a refilling cavity filled with coolant is provided in the refilling ring, a plurality of ventilation holes inclined toward the motor are provided on the mounting plate, and a plurality of cooling holes for air to pass through for cooling and connected to the ventilation holes are provided on the side wall of the refilling ring close to the blade; The liquid infusion tube is arranged on the liquid infusion ring and communicates with the liquid infusion cavity and the liquid box.

[0020] By adopting the above technical solution, the motor is fixedly mounted on the mounting plate and the output shaft passes through the mounting plate, and at the same time, the motor output shaft coaxially passes through the liquid replenishing ring. When the motor starts, air passes through the cooling hole, and the coolant can cool the passing air. The cooled air cools the motor after passing through the ventilation hole, and the coolant can also be connected to the liquid box through the liquid replenishing pipe. When the coolant in the liquid box is insufficient, it can be replenished, or when the coolant in the liquid replenishing ring is insufficient, the liquid box can also be replenished, so that the coolant in the liquid replenishing cavity and the liquid box is balanced, so that the motor and the output shaft can be cooled at the same time, thereby further reducing the risk of vibration and noise of the motor.

[0021] Optionally, the liquid replenishing ring is provided with a guide ring for guiding air to the cooling hole.

[0022] By adopting the above technical solution, more air can pass through the cooling holes, thereby further improving the cooling effect on the motor and further reducing the risk of vibration and noise of the motor.

[0023] Optionally, a noise reduction component for reducing noise is provided on the machine body, and the noise reduction component includes: The mounting portion is arranged on the outer wall of the machine body and forms a noise reduction cavity with one end open with the outer wall of the machine body, and the inner wall of the machine body is provided with a plurality of noise reduction holes connected with the noise reduction cavity; A mounting ring, which is detachably arranged on the mounting portion and the body and is used to block the opening of the noise reduction cavity; The sound-absorbing cotton is arranged on the mounting ring through a connecting assembly and extends into the noise reduction cavity and is used for eliminating the noise passing through the noise reduction hole.

[0024] By adopting the above technical solution, the noise generated when the motor is running can be moved to the silencer cotton through the noise reduction hole and eliminated, thereby reducing the risk of motor noise. At the same time, the silencer cotton can be replaced after removing the mounting ring, thereby further reducing the risk of motor noise.

[0025] Optionally, the connection component includes: A plurality of connecting plates are arranged on the mounting ring at intervals and extend into the noise reduction cavity; Two clamping rings are arranged on the ends of the mounting ring and the plurality of connecting plates away from the mounting ring, and clamping grooves for clamping and positioning the sound-absorbing cotton are provided on the two opposite side walls.

[0026] By adopting the above technical solution, the two ends of the silencer cotton are clamped and installed on the clamping grooves of the two clamping rings, and then the clamping rings are clamped and installed on the noise reduction cavity, and the mounting rings are fixed to the machine body and the mounting part, thereby realizing the installation of the silencer cotton and further reducing the risk of noise generation in the motor.

[0027] Optionally, the snap-in groove is provided with a guide angle for facilitating the snap-in of the sound-absorbing cotton.

[0028] By adopting the above technical solution, the installation of the sound-absorbing cotton can be easily realized.

[0029] In summary, the present application includes at least one of the following beneficial technical effects: 1. The motor output shaft is cooled by applying coolant to the motor output shaft through a cooling sponge, and the liquid adding component adds coolant to the cooling sponge. At the same time, multiple supporting balls support the motor output shaft. Therefore, the cooperation of supporting balls and cooling sponge can greatly reduce the probability of deformation of the motor output shaft due to heat, reduce the risk of vibration and noise of the motor output shaft, and make the axial fan stable in air output and able to operate under high temperature.

[0030] 2. The coolant is applied to the motor output shaft through the cooling sponge so that the amount of coolant on the motor output shaft is moderate. Compared with directly applying the coolant to the motor output shaft, the cooling sponge can greatly reduce the risk of coolant waste and leakage, save coolant and reduce the risk of coolant leakage and environmental pollution. Moreover, the cooling sponge has a simple and stable structure, and the cooling sponge contacts part of the motor output shaft. When the motor is not running, the cooling sponge only contacts part of the motor output shaft, that is, there is coolant only at the contact point between the cooling sponge and the motor output shaft, and there is no coolant in other parts of the motor output shaft, thereby further reducing the waste of coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional structural diagram of an axial flow fan; Figure 2 It is a partial structural diagram of an axial flow fan; Figure 3 yes Figure 2 Schematic diagram of the cross section of AA; Figure 4 It is a partial exploded view of an axial flow fan, mainly showing the liquid adding components and installation components; Figure 5 It is a partial exploded view of the axial fan, mainly showing the noise reduction components and connection components.

[0032] 1. Body; 11. Motor; 12. Blades; 13. Mounting plate; 14. Support rod; 15. Mounting tube; 16. Support surface; 2. Cooling mechanism; 21. Support seat; 22. Support ball; 23. Cooling sponge; 24. Cooling surface; 3. Liquid adding assembly; 31. Liquid box; 32. Capillary adsorption member; 33. Sliding hole; 4. Mounting assembly; 41. Mounting plate; 42. Elastic member; 43. Guide tube; 5. Liquid replenishment assembly; 51. Liquid replenishment ring; 52. Liquid replenishment tube; 53. Ventilation hole; 54. Cooling hole; 55. Guide ring; 56. Liquid replenishment chamber; 6. Noise reduction assembly; 61. Mounting portion; 62. Mounting ring; 63. Silencing cotton; 64. Noise reduction chamber; 65. Noise reduction hole; 7. Connecting assembly; 71. Connecting plate; 72. Snap ring; 73. Snap groove. DETAILED DESCRIPTION

[0033] The present application is described in further detail below.

[0034] The embodiment of the present application discloses an axial flow fan.

[0035] Reference Figure 1 and Figure 2 The axial flow fan includes a body 1, a motor 11 arranged on the body 1, blades 12 arranged on the output shaft of the motor 11, a cooling mechanism 2 arranged on the body 1 and used to cool the output shaft of the motor 11, and a noise reduction component 6 for reducing noise.

[0036] The body 1 is a tubular structure, and a mounting plate 13 is fixedly mounted on the inner wall of the body 1 via a plurality of support rods 14. The mounting plate 13 is an annular structure and is coaxially arranged with the body 1. A plurality of support rods 14 are fixedly mounted on the outer wall of the mounting plate 13 and are arranged in a circular array around the axis of the body 1. The support rods 14 are radially arranged and fixedly mounted on the inner wall of the body 1.

[0037] The cooling mechanism 2 includes a support seat 21 and a cooling sponge 23. The support seat 21 is fixedly mounted on the inner wall of the body 1, and the support seat 21 is in a horizontal state and is located on one side of the mounting plate 13. The motor 11 is fixedly mounted on the side wall of the mounting plate 13 away from the support seat 21, and the output shaft of the motor 11 coaxially passes through the mounting plate 13 and extends to the side of the mounting plate 13 close to the support seat 21.

[0038] Reference Figure 2-Figure 4 A cooling sponge 23 is arranged on the upper surface of the support seat 21, and coolant is adsorbed in the cooling sponge 23. At the same time, an arc-shaped cooling surface 24 is formed on the upper surface of the cooling sponge 23. The cooling surface 24 is pressed against the output shaft of the motor 11, so that the coolant in the cooling sponge 23 is applied to the output shaft of the motor 11 to achieve cooling.

[0039] The cooling mechanism 2 also includes a plurality of supporting balls 22 and a liquid adding assembly 3. The liquid adding assembly 3 is arranged on the supporting seat 21 and is used to add coolant to the cooling sponge 23. The liquid adding assembly 3 includes a liquid box 31 and a plurality of capillary adsorption members 32. The liquid box 31 is fixedly mounted on the upper surface of the supporting seat 21, and the liquid box 31 is filled with coolant for cooling. At the same time, a plurality of sliding holes 33 vertically penetrating the upper surface of the liquid box 31 are spaced apart on the upper surface of the liquid box 31.

[0040] A plurality of capillary adsorption members 32 are arranged on the lower surface of the cooling sponge 23, and the capillary adsorption members 32 extend downward into the liquid box 31. At the same time, the capillary adsorption members 32 extend into the liquid. The capillary adsorption members 32 can absorb and transport the coolant to the cooling sponge 23 under the action of capillary force. The capillary adsorption members 32 can be absorbent cotton sheets, etc.; the cooling sponge 23 can also form a certain adsorption force, so that the coolant is absorbed in the cooling sponge 23; when the coolant located at the cooling surface 24 is applied to the output shaft of the motor 11, the coolant at other positions on the cooling sponge 23 can move toward the cooling surface 24 for replenishment.

[0041] The support seat 21 is provided with a mounting assembly 4 connected to a cooling sponge 23 and a plurality of capillary adsorption members 32; a mounting tube 15 is fixedly mounted on the upper surface of the liquid box 31 and below the output shaft of the motor 11; a plurality of sliding holes 33 are located in the mounting tube 15; the mounting tube 15 is vertically arranged upward and the projection of the inner wall in the vertical direction is a square or rectangular; an arc-shaped supporting surface 16 is formed at the top of the mounting tube 15, and the center of the supporting surface 16 is located on the axis of the output shaft of the motor 11; a plurality of supporting balls 22 are rotatably mounted on the supporting surface 16 and supported on the output shaft of the motor 11 for support and positioning.

[0042] Reference Figure 2-Figure 4 The mounting assembly 4 includes a mounting plate 41 and an elastic member 42. The mounting plate 41 is vertically slidably mounted on the inner side wall of the mounting tube 15. Guide tubes 43 are fixedly mounted on the lower surface of the mounting plate 41 and at positions corresponding to the plurality of sliding holes 33. The plurality of guide tubes 43 are in a vertical state and are respectively vertically slidably mounted on the plurality of sliding holes 33. The guide tubes 43 are connected to the upper surface of the mounting plate 41. The plurality of capillary adsorption members 32 are respectively snap-fitted on the inner side walls of the plurality of guide tubes 43, and the capillary adsorption members 32 extend vertically downward into the liquid in the liquid box 31, and at the same time, the cooling sponge 23 is pressed against the upper surface of the mounting plate 41, so that the mounting plate 41 and the cooling sponge 23 move vertically. The elastic member 42 is a spring or a spring. The elastic member 42 is fixedly mounted on the lower surface of the mounting plate 41. The elastic member 42 pushes the cooling surface 24 on the cooling sponge 23 to press against the output shaft of the motor 11.

[0043] The output shaft of the motor 11 drives the blades 12 to rotate, and the cooling surface 24 on the cooling sponge 23 is pressed against the output shaft of the motor 11 under the action of the elastic sheet, so that the coolant is applied to the output shaft of the motor 11 for cooling. As the output shaft of the motor 11 rotates, the coolant continues to be applied to other positions of the output shaft of the motor 11, thereby cooling the output shaft of the motor 11, and a plurality of supporting balls 22 are supported on the output shaft of the motor 11 for support and positioning; at the same time, a plurality of capillary adsorption members 32 absorb and transport the coolant to the cooling sponge 23. After the coolant at the cooling surface 24 is applied to the output shaft of the motor 11, the coolant at other positions of the cooling sponge 23 is replenished to the cooling surface 24, so as to continue to apply the coolant to the output shaft of the motor 11, thereby reducing the risk of deformation of the output shaft of the motor 11 and reducing the risk of vibration and noise of the motor 11.

[0044] A fluid replenishment assembly 5 connected to the liquid box 31 is arranged on the side wall of the mounting plate 13 close to the support seat 21, and the fluid replenishment assembly 5 includes a fluid replenishment ring 51 and a fluid replenishment tube 52. The fluid replenishment ring 51 is fixedly mounted on the side wall of the mounting plate 13 close to the support seat 21 and is coaxially arranged with the mounting plate 13, and the output shaft of the motor 11 passes coaxially through the fluid replenishment ring 51; the outer wall of the fluid replenishment ring 51 extends to the outside of the motor 11, and a plurality of ventilation holes 53 inclined toward the motor 11 are opened on the mounting ring 62 and located on the outside of the motor 11; a plurality of cooling holes 54 connected to the ventilation holes 53 are opened on the side wall of the fluid replenishment ring 51 away from the mounting plate 13, and a fluid replenishment cavity 56 is opened in the fluid replenishment ring 51, and the fluid replenishment cavity 56 is filled with coolant.

[0045] The refilling tube 52 is fixedly installed at the bottom of the refilling ring 51 and is fixedly connected to the side wall of the liquid box 31, and the refilling tube 52 communicates with the refilling cavity 56 and the liquid box 31; when the coolant in the liquid box 31 is less, the coolant in the refilling cavity 56 can flow into the liquid box 31 through the refilling tube 52 for replenishment, and vice versa, when the coolant in the refilling cavity 56 is less, the coolant in the liquid can also flow into the refilling cavity 56 for replenishment. A guide ring 55 is coaxially fixedly installed on the side wall of the refilling ring 51 near the support seat 21. The diameter of the end of the guide ring 55 near the support seat 21 is larger than the diameter of the end near the refilling ring 51. The guide ring 55 is used to guide air to the cooling hole 54.

[0046] The motor 11 starts driving the blades 12 to rotate, allowing air to pass through the cooling holes 54. The coolant in the liquid replenishing chamber 56 cools the air, and then the cooled air is blown toward the motor 11 through the ventilation holes 53, thereby cooling the motor 11 and further reducing the risk of vibration and noise of the motor 11.

[0047] Reference Figure 1 , Figure 5The noise reduction component 6 includes a mounting portion 61, a mounting ring 62 and a sound-absorbing cotton 63. The mounting portion 61 is coaxially fixedly mounted on the outer wall of one end of the body 1, and the mounting portion 61 extends to the other end of the body 1 and forms a noise reduction cavity 64 with one end open between the mounting portion 61 and the outer wall of the body 1. A plurality of noise reduction holes 65 connected to the noise reduction cavity 64 are evenly opened on the inner wall of the body 1; the mounting ring 62 is fixedly mounted on the mounting portion 61 and the end of the body 1 close to the opening of the noise reduction cavity 64 by screws, and the mounting ring 62 is used to block the open end of the noise reduction cavity 64; the sound-absorbing cotton 63 is arranged on the mounting ring 62 through the connecting component 7, and the sound-absorbing cotton 63 extends into the noise reduction cavity 64 and is used to eliminate the noise passing through the noise reduction hole 65.

[0048] The connecting assembly 7 includes a plurality of connecting plates 71 and two clamping rings 72. The connecting plates 71 are arranged along the axis direction of the machine body 1, and a plurality of connecting plates 71 are arranged in a circular array around the axis of the machine body 1. The connecting plates 71 are fixedly mounted on the side wall of the mounting ring 62 close to the noise reduction cavity 64, and the connecting plates 71 extend into the noise reduction cavity 64; one of the clamping rings 72 is fixedly mounted on the side wall of the mounting ring 62 close to the noise reduction cavity 64, and the other clamping ring 72 is fixedly mounted on one end of the plurality of connecting plates 71 away from the mounting ring 62, and annular clamping grooves 73 are provided on the opposite side walls of the two clamping rings 72, and the axes of the clamping grooves 73 and the noise reduction cavity 64 coincide with each other; the sound-absorbing cotton 63 is a plate-like structure and is formed into a cylindrical structure after being wound. The two ends of the sound-absorbing cotton 63 are clamped and mounted on the clamping grooves 73 of the two clamping rings 72, thereby realizing the installation of the sound-absorbing cotton 63, and the clamping grooves 73 are provided with guide angles for facilitating the clamping and installation of the sound-absorbing cotton 63 on the clamping grooves 73.

[0049] The working principle of the embodiment of the present application is as follows: The output shaft of the motor 11 drives the blades 12 to rotate, and the cooling sponge 23 is pressed against the output shaft of the motor 11 under the action of the elastic sheet, so that the coolant is applied to the output shaft of the motor 11 for cooling. As the output shaft of the motor 11 rotates, the coolant continues to be applied to other positions of the output shaft of the motor 11, thereby realizing cooling of the output shaft of the motor 11, and a plurality of supporting balls 22 are supported on the output shaft of the motor 11 for support and positioning; at the same time, a plurality of capillary adsorption members 32 absorb and transport the coolant to the cooling sponge 23, thereby reducing the risk of deformation of the output shaft of the motor 11, and reducing the risk of vibration and noise of the motor 11.

[0050] The motor 11 starts driving the blades 12 to rotate, and the air is cooled when passing through the cooling holes 54. The cooled air is then blown toward the motor 11 through the ventilation holes 53, thereby cooling the motor 11 body 1. At the same time, the cooled air is output, which reduces the risk of vibration and noise of the motor 11, and enables the axial flow fan to output air stably and operate under high temperature conditions.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An axial flow fan, characterized in that: The invention comprises a machine body (1), a motor (11) arranged on the machine body (1), and a blade (12) arranged on an output shaft of the motor (11), and also comprises a cooling mechanism (2) arranged on the machine body (1) and used for cooling the output shaft of the motor (11), wherein the cooling mechanism (2) comprises: A support seat (21) is arranged on the machine body (1); A plurality of supporting balls (22) are rotatably disposed on the supporting seat (21) and supported on the output shaft of the motor (11) for positioning; A cooling sponge (23) is arranged on the support seat (21) and absorbs a cooling liquid, the output shaft of the motor (11) is pressed against the cooling sponge (23) and the cooling liquid is applied to the output shaft of the motor (11) for cooling; The liquid adding component (3) is arranged on the support seat (21) and is used to add cooling liquid to the cooling sponge (23).

2. An axial flow fan according to claim 1, characterized in that: The liquid adding component (3) comprises: A liquid box (31), which is arranged on the support seat (21) and is located below the output shaft of the motor (11) and is filled with cooling liquid; A plurality of capillary adsorption members (32) are arranged on the cooling sponge (23) and extend downward into the liquid box (31) and absorb and transport the cooling liquid to the cooling sponge (23) under the action of capillary force.

3. An axial flow fan according to claim 2, characterized in that: The support seat (21) is provided with a mounting assembly (4), a plurality of sliding holes (33) are provided at intervals on the upper surface of the liquid box (31), and the mounting assembly (4) comprises: The mounting plate (41) is vertically slidably mounted on the sliding hole (33) via a plurality of guide tubes (43); the plurality of capillary adsorption members (32) are snap-fitted and mounted on the inner side walls of the plurality of guide tubes (43) so that the cooling sponge (23) is pressed against the mounting plate (41) for positioning and extends downward into the cooling liquid in the liquid box (31); The elastic member (42) is arranged on the support seat (21) and is connected to the mounting plate (41) and pushes the cooling sponge (23) to press against the output shaft of the motor (11).

4. An axial flow fan according to claim 3, characterized in that: The support seat (21) is detachably mounted on the machine body (1), and the plurality of support balls (22) are located around the cooling sponge (23).

5. The axial flow fan according to claim 3, characterized in that: A mounting tube (15) is arranged on the upper surface of the liquid box (31), and the mounting plate (41) and the cooling sponge (23) are vertically slidably arranged on the inner wall of the mounting tube (15) so that the plurality of sliding holes (33) are located on the inner side of the mounting tube (15).

6. An axial flow fan according to claim 5, characterized in that: The machine body (1) is provided with a mounting plate (13), the motor (11) is arranged on a side wall of the mounting plate (13) facing away from the cooling mechanism (2), and the output shaft passes through the mounting plate (13) and is close to the cooling mechanism (2). The mounting plate (13) is provided with a liquid replenishing assembly (5) connected to the liquid box (31), and the liquid replenishing assembly (5) comprises: A liquid replenishing ring (51) is arranged on the mounting plate (41) so that the output shaft of the motor (11) coaxially passes through the liquid replenishing ring (51) and is located on a side of the cooling sponge (23) close to the motor (11); the mounting plate (13) is provided with a plurality of ventilation holes (53) inclined toward the motor (11); a liquid replenishing cavity (56) filled with cooling liquid is provided in the liquid replenishing ring (51); the mounting plate (41) is provided with a plurality of ventilation holes (53) inclined toward the motor (11); and a side wall of the liquid replenishing ring (51) close to the blade (12) is provided with a plurality of cooling holes (54) for air to pass through for cooling and in communication with the ventilation holes (53); The liquid infusion tube (52) is arranged on the liquid infusion ring (51) and is in communication with the liquid infusion cavity (56) and the liquid box (31).

7. An axial flow fan according to claim 6, characterized in that: The liquid replenishing ring (51) is provided with a guide ring (55) for guiding air to the cooling hole (54).

8. The axial flow fan according to claim 1, characterized in that: The machine body (1) is provided with a noise reduction component (6) for reducing noise, and the noise reduction component (6) comprises: The mounting portion (61) is arranged on the outer wall of the machine body (1) and forms a noise reduction cavity (64) with one end open together with the outer wall of the machine body (1); a plurality of noise reduction holes (65) communicating with the noise reduction cavity (64) are formed on the inner wall of the machine body (1); A mounting ring (62) detachably disposed on the mounting portion (61) and the machine body (1) and used to block the opening of the noise reduction chamber (64); The sound-absorbing cotton (63) is arranged on the mounting ring (62) through the connecting assembly (7) and extends into the noise reduction cavity (64) and is used to eliminate the noise passing through the noise reduction hole (65).

9. An axial flow fan according to claim 8, characterized in that: The connection component (7) comprises: A plurality of connecting plates (71) are arranged at intervals on the mounting ring (62) and extend into the noise reduction cavity (64); Two clamping rings (72) are arranged on one end of the mounting ring (62) and the plurality of connecting plates (71) away from the mounting ring (62), and clamping grooves (73) for clamping the sound-absorbing cotton (63) for positioning are provided on opposite side walls.

10. An axial flow fan according to claim 9, characterized in that: The clamping groove (73) is provided with a guide angle for facilitating the clamping of the sound-absorbing cotton (63).

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