A safe, reliable and heat-dissipating hollow shaft industrial fan

Abstract

The present invention discloses a safe, reliable and heat-dissipating hollow shaft industrial fan, which includes a bracket assembly, a hollow shaft fixed at the bottom of the bracket assembly and having an upper and lower through-channel formed therein, a motor driver arranged at the periphery of the hollow shaft, a plurality of fan blades driven to rotate by the motor driver, and an anti-detachment center support rod passing through the hollow shaft, a center tray capable of supporting the motor driver being arranged at the bottom of the anti-detachment center support rod, a plurality of hanging rings arranged at the periphery of the bracket assembly and stably hung on the roof through a first steel wire rope passing through the hanging ring, and an upper portion of the anti-detachment center support rod being hung on the roof through a second steel wire rope. The present invention has a firm and reliable connection, high safety performance and good heat dissipation effect.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial fans, and in particular relates to a safe, reliable and highly heat-dissipating hollow shaft industrial fan. Background Art

[0002] Industrial ceiling fans are a common industrial machine widely used in industrial plants, logistics warehouses, waiting rooms, exhibition halls, gymnasiums, supermarkets and other tall spaces as space ventilation and personnel cooling. It can push a large amount of airflow to the ground, forming a certain height of airflow layer on the ground to move horizontally, thus promoting the overall air circulation. The advantage of this is that it covers the ground in all directions and the three-dimensional circulation of air can achieve natural ventilation and large coverage area.

[0003] When the weather turns hot, especially in summer, the indoor working temperature in large venues, especially industrial plants, becomes hotter and hotter. The cooling effect of traditional fans is very limited on days with a temperature of more than 30 degrees. It is difficult to achieve the cooling effect by using central air conditioning even without considering the energy consumption problem. Therefore, industrial ceiling fans are a feasible solution.

[0004] Although the existing industrial ceiling fans have many advantages, they still have shortcomings in terms of safety, noise and motor heat dissipation. Due to the huge size of this type of fan blades, the fan blade length can reach 7.3 meters. If the ceiling fan parts, especially the motor, fall, it will cause great harm to the workers below. In addition, since the existing industrial fans are driven by ordinary asynchronous motors and reducers, this method makes a lot of noise when the ceiling fan is running. In terms of motors, the existing ceiling fan motors, in addition to the conventional method of using motor heat sinks for cooling, lack a better heat dissipation structure, and the heat dissipation effect is poor, which will inevitably have an adverse effect on the service life of the ceiling fan.

[0005] Patent No. CN201920902927.2 in the prior art discloses an industrial ceiling fan. Although a steel wire rope is used as a safety measure to prevent falling off, it still falls off after falling off. Its safety performance needs to be improved, and the heat dissipation effect is not ideal.

[0006] Therefore, it is necessary to provide a new hollow shaft industrial fan which is safe, reliable and has strong heat dissipation function to solve the above technical problems. Summary of the invention

[0007] The main purpose of the present invention is to provide a safe, reliable and heat-dissipating hollow shaft industrial fan, which has a firm and reliable connection, high safety performance and good heat dissipation effect.

[0008] The present invention achieves the above-mentioned purpose through the following technical scheme: a safe, reliable and heat-dissipating hollow shaft industrial fan, which includes a bracket assembly, a hollow shaft fixed at the bottom end of the bracket assembly and having an upper and lower through-channel formed inside, a motor drive arranged on the outer periphery of the hollow shaft, a plurality of fan blades driven to rotate by the motor drive, and an anti-detachment center support rod passing through the hollow shaft, a center tray for supporting the motor drive being arranged at the bottom of the anti-detachment center support rod, a plurality of hanging rings being arranged on the outer periphery of the bracket assembly and being stably hung on the roof by a first steel wire rope passing through the hanging ring, and an upper part of the anti-detachment center support rod being hung on the roof by a second steel wire rope.

[0009] Furthermore, a plurality of heat sinks are arranged in the hollow shaft.

[0010] Furthermore, the bracket assembly includes a connecting rod, a first connecting member fixed to the top of the connecting rod and used to connect to the top mounting plate or the roof, and a second connecting member fixed to the bottom of the connecting rod, the second connecting member is provided with a hanging ear piece, and the hanging ear piece is provided with a through hole to form the hanging ring.

[0011] Furthermore, the lower surface of the second connecting member is fixedly connected to the top of the hollow shaft.

[0012] Furthermore, the hollow shaft includes a hollow annular disk with a receiving cavity formed inside, a first hollow shaft body extending upward from an upper surface of the hollow annular disk, and a second hollow shaft body extending downward from a lower surface of the hollow annular disk.

[0013] Furthermore, the heat sinks are distributed in the storage cavity at annular intervals, and the storage cavity is connected to the through channel.

[0014] Furthermore, the pair of bearings are respectively installed on the outer periphery of the first hollow shaft body and the second hollow shaft body.

[0015] Furthermore, the motor drive component includes a stator assembly fixedly clamped on the outer circumferential surface of the hollow shaft, and a rotor assembly that cooperates with the stator assembly to achieve rotation; the rotor assembly includes an upper rotating plate fixedly connected to the outer ring of one of the above-mentioned bearings, a lower rotating plate fixedly connected to the outer ring of the other bearing, and a magnetic steel cylinder connecting the upper rotating plate and the lower rotating plate together along the outer circumference.

[0016] Furthermore, the anti-slip central supporting rod passes through the through passage.

[0017] Compared with the prior art, the beneficial effects of the hollow shaft industrial fan of the present invention, which is safe, reliable and has strong heat dissipation function, are as follows: a triple safety anti-slip means is provided: 1) the first connecting piece at the top of the hanging bracket assembly is fixedly connected to the roof or the top connecting piece, which serves as a first protection measure; 2) the hanging bracket assembly is evenly hung on the roof in a circular shape using multiple first steel wire ropes, forming a second protection measure. When the first protection measure fails, the first steel wire rope can play an anti-slip effect; 3) an anti-slip center support rod is provided that passes through the hollow shaft, and the upper part of the anti-slip center support rod is connected by the second steel wire rope. It is hung on the roof, and a center tray is arranged at the bottom of the anti-detachment center support rod. When the first connecting piece and the first steel wire rope fail, the center tray is used to support the fan motor, which serves as the third anti-detachment protection measure; it greatly improves the connection reliability and safety, and effectively solves the safety risks caused by the fan falling off; in addition, by setting a hollow shaft structure and arranging a number of heat dissipation ribs in the storage cavity of the hollow shaft, when the fan is working, the fan blades are used to blow the airflow above the fan blades upward, so that it can flow through the hollow shaft into the storage cavity, and the hollow shaft is cooled and dissipated, which greatly improves the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the structure of an embodiment of the present invention after the fan blades are removed;

[0020] Figure 3 is a partial cross-sectional structural schematic diagram of an embodiment of the present invention;

[0021] The numbers in the figure represent:

[0022] 100 safe, reliable and heat-dissipating hollow shaft industrial fan;

[0023] 1. Bracket assembly, 11. Connecting rod, 12. First connecting piece, 13. Second connecting piece, 14. Hanging ear piece, 15. Hanging ring; 2. Hollow shaft, 21. Storage cavity, 22. Hollow annular disk, 23. First hollow shaft body, 24. Second hollow shaft body, 25. Through channel; 3. Motor drive component, 31. Upper rotating plate, 32. Lower rotating plate, 33. Magnetic steel cylinder, 34. Annular cavity, 35. Stator assembly, 36. Bearing; 4. Fan blades; 5. Anti-slip center support rod, 51. Center tray; 6. Heat sink. DETAILED DESCRIPTION Example

[0024] Please refer to Figure 1-Figure 3The present embodiment provides a safe, reliable and heat-dissipating hollow shaft industrial fan 100, which includes a bracket assembly 1, a hollow shaft 2 fixed to the bottom end of the bracket assembly 1 and having an upper and lower through-channel 25 formed therein, a motor driver 3 installed on the outer periphery of the hollow shaft 2 through a pair of bearings 36, a plurality of fan blades 4 driven to rotate by the motor driver 3, and an anti-detachment center support rod 5 passing through the hollow shaft 2 and having a center tray 51 for supporting the motor driver 3 at the bottom. The outer periphery of the bracket assembly 1 is provided with a plurality of hanging rings 15 and is stably hung on the roof through a first steel wire rope (not shown in the figure) passing through the hanging ring 15. The upper part of the anti-detachment center support rod 5 is hung on the roof through a second steel wire rope (not shown in the figure), and a plurality of heat sinks 6 are arranged in the hollow shaft 2.

[0025] The bracket assembly 1 includes a connecting rod 11, a first connecting member 12 fixed to the top of the connecting rod 11 and used to connect to the top mounting plate or the roof, and a second connecting member 13 fixed to the bottom of the connecting rod 11. The second connecting member 13 is provided with a hanging ear piece 14, and the hanging ear piece 14 is provided with a through hole to form the hanging ring 15. The lower surface of the second connecting member 13 is fixedly connected to the top of the hollow shaft 2, and can be connected by screws.

[0026] The hollow shaft 2 includes a hollow annular disk 22 with a receiving cavity 21 formed inside, a first hollow shaft body 23 extending upward from the upper surface of the hollow annular disk 22, and a second hollow shaft body 24 extending downward from the lower surface of the hollow annular disk 22. The heat sink 6 is distributed in the receiving cavity 21 in an annular manner. The pair of bearings are respectively installed on the outer periphery of the first hollow shaft body 23 and the second hollow shaft body 24. The receiving cavity 21 is connected to the through channel 25.

[0027] The motor drive 3 includes a stator assembly 35 fixedly held on the outer peripheral surface of the hollow shaft 2, and a rotor assembly that cooperates with the stator assembly 35 to realize rotation. The rotor assembly includes an upper rotating plate 31 fixedly connected to the outer ring of one of the bearings, a lower rotating plate 32 fixedly connected to the outer ring of the other bearing, and a magnetic steel cylinder 33 connecting the upper rotating plate 31 and the lower rotating plate 32 along the outer circumference. The stator assembly 35 is arranged in an annular cavity 34 formed by the magnetic steel cylinder 33 and the hollow shaft 2. The stator assembly 35 is fixedly held on the outer peripheral surface of the hollow annular disk 22. The motor drive 3 is a permanent magnet synchronous brushless motor (external rotor type). When the magnetic cylinder 33 rotates, it carries the upper rotating plate 31 and the lower rotating plate 32 to perform synchronous rotation around the hollow shaft 2. The motor drive 3 is a permanent magnet synchronous brushless motor.

[0028] The fan blades 4 are fixed in an equiangular ring shape on the upper rotating plate 31. In this embodiment, five fan blades 4 are provided, and in other embodiments, the number of fan blades 4 can be flexibly designed according to needs.

[0029] The anti-drop center support rod 5 passes through the through channel 25 of the center shaft 2 , and the diameter of the center tray 51 fixed at the bottom is larger than the inner diameter of the center hole of the lower rotating plate 32 , so that the lower rotating plate 32 can be supported by the center tray 51 .

[0030] The present embodiment provides a safe, reliable and heat-dissipating hollow shaft industrial fan 100, which is provided with three safety anti-slip means: 1) the first connecting piece at the top of the bracket assembly is fixedly connected to the roof or the top connecting piece, which serves as the first protection measure; 2) the bracket assembly is evenly hung on the roof by using a plurality of first steel wire ropes in a circular shape, which forms a second protection measure. When the first protection measure fails, the first steel wire rope can play an anti-slip effect; 3) an anti-slip center support rod is provided that passes through the hollow shaft, and the upper part of the anti-slip center support rod is hung on the roof by using the second steel wire rope. , and a center tray is arranged at the bottom of the anti-detachment center support rod. When the first connecting piece and the first steel wire rope fail, the center tray is used to support the fan motor, which serves as the third anti-detachment protection measure; the connection reliability and safety are greatly improved, and the safety risks caused by the fan falling off are effectively solved; in addition, by setting a hollow shaft structure and arranging a number of heat dissipation ribs in the storage cavity of the hollow shaft, when the fan is working, the fan blades are used to blow the airflow above the fan blades upward, so that it can flow through the hollow shaft into the storage cavity, and the hollow shaft is cooled and dissipated, which greatly improves the heat dissipation effect.

[0031] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A safe, reliable and heat-dissipating hollow shaft industrial fan, characterized by: It comprises a hanger assembly, a hollow shaft fixed at the bottom end of the hanger assembly and having an upper and lower through-passage formed therein, a motor drive arranged at the periphery of the hollow shaft, a plurality of fan blades driven to rotate by the motor drive, and an anti-slip center support rod passing through the hollow shaft, the anti-slip center support rod passing through the through-passage, a center tray capable of supporting the motor drive rod being arranged at the bottom of the anti-slip center support rod, a plurality of hanging rings arranged at the periphery of the hanger assembly and stably hung on the roof by a first steel wire rope passing through the hanging ring, and an upper portion of the anti-slip center support rod being hung on the roof by a second steel wire rope; A plurality of heat sinks are arranged in the hollow shaft, the hollow shaft comprises a hollow annular disk with a receiving cavity formed inside, a first hollow shaft body extending upward from the upper surface of the hollow annular disk, and a second hollow shaft body extending downward from the lower surface of the hollow annular disk, the heat sinks are distributed in the receiving cavity at annular intervals, the receiving cavity is connected with the through channel, and when the fan is working, the airflow can flow through the hollow shaft into the receiving cavity to cool and dissipate the heat of the hollow shaft; The bracket assembly includes a connecting rod, a first connecting piece fixed to the top of the connecting rod and used to connect to the top mounting plate or the roof, and a second connecting piece fixed to the bottom of the connecting rod, wherein the second connecting piece is provided with a hanging ear piece, and the hanging ear piece is provided with a through hole to form the hanging ring; the lower surface of the second connecting piece is fixedly connected to the top of the hollow shaft.

2. The safe, reliable and heat-dissipating hollow shaft industrial fan according to claim 1 is characterized in that: A pair of bearings are respectively installed on the outer peripheries of the first hollow shaft body and the second hollow shaft body.

3. The safe, reliable and heat-dissipating hollow shaft industrial fan according to claim 2 is characterized in that: The motor drive component includes a stator assembly fixedly embraced on the outer circumferential surface of the hollow shaft, and a rotor assembly that cooperates with the stator assembly to achieve rotation; the rotor assembly includes an upper rotating plate fixedly connected to one of the outer rings of the bearings, a lower rotating plate fixedly connected to the outer ring of the other bearing, and a magnetic steel cylinder connecting the upper rotating plate and the lower rotating plate along the outer circumference.

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