CN217898222U - Cooling tower fan directly driven by permanent magnet motor - Google Patents
Cooling tower fan directly driven by permanent magnet motor Download PDFInfo
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- CN217898222U CN217898222U CN202221324880.4U CN202221324880U CN217898222U CN 217898222 U CN217898222 U CN 217898222U CN 202221324880 U CN202221324880 U CN 202221324880U CN 217898222 U CN217898222 U CN 217898222U
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- permanent magnet
- magnet motor
- cooling tower
- tower fan
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Abstract
The utility model discloses a cooling tower fan that permanent-magnet machine directly driven, blade including pedestal, permanent-magnet machine, wheel hub and a plurality of pieces. The hub and blades are assembled together to form an impeller. The permanent magnet motor is arranged on the mounting frame, the permanent magnet motor directly drives the impeller to rotate, the transmission structure is simplified, kinetic energy cannot be lost, and the maintenance is very simple. Meanwhile, the speed of the permanent magnet motor is convenient to adjust, so that the cooling tower fan can be slowly accelerated when being started, and parts are prevented from being damaged by sudden starting.
Description
Technical Field
The utility model belongs to the technical field of the cooling tower technique and specifically relates to indicate a cooling tower fan that permanent-magnet machine directly driven.
Background
Cooling towers are generally devices that use water as a circulating coolant to absorb heat from a system and discharge the heat to the atmosphere to reduce the temperature of the water; the cold is an evaporation and heat dissipation device which utilizes the principle that water is in flowing contact with air and then carries out heat exchange to generate steam, the steam volatilizes and takes away heat to achieve evaporation and heat dissipation, convection heat transfer, radiation heat transfer and the like to dissipate waste heat generated in industry or refrigeration air conditioners to reduce the water temperature so as to ensure the normal operation of the system, and the device is generally barrel-shaped and is named as a cooling tower.
The cooling tower generally adopts a fan as a power source to drive wind to flow, so as to take away heat. The motor and the impeller of the traditional cooling tower fan are generally connected in the following way: 1. the output shaft of the motor is connected with the bearing body, and then the bearing body is connected with the impeller. 2. The motor and the impeller are connected through a belt pulley to transmit kinetic energy. 3. The motor is connected with the impeller through a gearbox to transfer kinetic energy. The above connection method will cause kinetic energy loss, and the structure is complicated, which will increase the maintenance cost.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a cooling tower fan directly driven by a permanent magnet motor, which is not only simple in structure but also free from loss of kinetic energy, thereby overcoming the disadvantages of the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the application provides a cooling tower fan directly driven by a permanent magnet motor, which comprises a base body, the permanent magnet motor, a hub and a plurality of blades; a mounting frame is arranged at the central position of the seat body, and the permanent magnet motor is arranged on the mounting frame; the output shaft of the permanent magnet motor is provided with threads and a key;
a rotating shaft hole is formed in the center of the hub, and a key groove is formed in the rotating shaft hole; an output shaft of the permanent magnet motor penetrates through the rotating shaft hole and then is screwed together with a nut, and the key is clamped in the key groove; the blades are arranged on the hub at equal intervals.
Preferably, the hub is provided with a plurality of mounting parts A, and the blades are provided with mounting parts B; the installation part A is connected with the installation part B through screws.
Preferably, the blade and the mounting part B are riveted or welded together.
Preferably, the number of the mounting parts A is four, and the number of the blades is four.
Preferably, arc-shaped ribs are arranged between the mounting parts A; arc holes A are formed between the arc ribs and the rotating shaft holes in a hollow mode.
Preferably, the arc-shaped ribs are internally provided with through holes B.
Preferably, the mounting rack comprises a mounting rack a arranged on the base body and a mounting beam arranged on the mounting rack a; the permanent magnet motor is arranged on the mounting beam.
Preferably, the base is arranged at an air outlet at the top of the tower barrel.
Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme, a cooling tower fan that permanent-magnet machine directly drives, blade including pedestal, permanent-magnet machine, wheel hub and a plurality of pieces. The hub and blades are assembled together to form an impeller. The permanent magnet motor is arranged on the mounting frame, the permanent magnet motor output shaft directly drives the impeller to rotate, the transmission structure is simplified, kinetic energy cannot be lost, and the maintenance is very convenient. Meanwhile, the speed regulation is convenient, so that the acceleration can be slowly accelerated during starting, and parts are prevented from being damaged during sudden starting.
The hub is provided with arc ribs, and arc holes A are hollowed between the arc ribs and the rotating shaft holes; a through hole B is formed in the arc-shaped rib; the arc-shaped ribs improve the structure of the hub, and the stress performance is better. The weight of the hub is reduced by the arc-shaped holes A and the through holes B, and the deformation resistance of the hub is improved.
To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic top view of an embodiment of the present invention during installation.
Fig. 2 is a schematic diagram of the keyways in fig. 1 a-B according to an embodiment of the present invention.
Fig. 3 is a schematic view of the assembly of the permanent magnet motor and the wheel hub according to the embodiment of the present invention.
Fig. 4 is an assembly diagram of the seat and the mounting frame according to the embodiment of the present invention.
Fig. 5 is a perspective schematic view of an embodiment of the present invention when assembled.
The attached drawings indicate the following:
10. base body 11 and permanent magnet motor
12. Output shaft 13, screw
14. Key 15 and tower drum
16. Air outlet 20, blade
21. Mounting part B30 and mounting rack
31. Mounting frame A32 and mounting beam
40. Hub 41, keyway
42. Mounting part A43, nut
44. Arc rib 45 and arc hole A
46. Through hole B47, pivot hole.
Detailed Description
Referring to fig. 1 to 5, a specific structure of a cooling tower fan directly driven by a permanent magnet motor according to a preferred embodiment of the present invention is shown.
The output shaft 12 of the permanent magnet motor 11 directly drives the impeller to rotate, so that the transmission structure is simplified, the kinetic energy cannot be lost, and the maintenance is very convenient. Meanwhile, the speed regulation is convenient, so that the acceleration can be slowly accelerated during starting, and parts are prevented from being damaged during sudden starting.
The application provides a cooling tower fan directly driven by a permanent magnet motor, which comprises a base body 10, a permanent magnet motor 11, a hub 40 and a plurality of blades 20; a mounting frame 30 is arranged at the center of the seat body 10, and the permanent magnet motor 11 is arranged on the mounting frame 30; the output shaft 12 of the permanent magnet motor 11 is provided with a thread 13 and a key 14; a rotating shaft hole 47 is formed in the center of the hub 40, and a key groove 41 is formed in the rotating shaft hole 47; the output shaft 12 of the permanent magnet motor 11 is screwed with the nut 43 after passing through the rotating shaft hole 47, and the key 14 is clamped in the key groove 41; the blades 20 are disposed at equal intervals on the hub 40. Several blades 20 are assembled to a hub 40 to form an impeller. The blade 20 has a plurality of pieces, and is not particularly limited. The permanent magnet motor 11 has a higher power, a higher mass ratio and a smaller size, and therefore will exert greater advantages in use, as well as excellent speed and braking performance. Therefore, the permanent magnet motor 11 enables the cooling tower fan to be slowly accelerated, and damage to components due to sudden acceleration is avoided. Assembling the permanent magnet motor 11 and the impeller: the output shaft 12 of the permanent magnet motor 11 is screwed with the nut 43 after passing through the rotating shaft hole 47, so that the key 14 is clamped in the key groove 41; finally, the blades 20 are arranged on the hub 40 at equal intervals, and the installation is finished. The key 14 is clamped in the key slot 41 to lock the output shaft 12 of the permanent magnet motor 11 and the hub 40, so that relative rotation cannot occur.
The number of the blades 20 in this embodiment is four, the number of the mounting portions a is four, and the number of the blades 20 is four. Preferably, the hub 40 has a plurality of mounting portions a42, and the blade 20 is provided with a mounting portion B21; the installation part A42 is connected with the installation part B21 through a screw. Preferably, the blade 20 and the mounting portion B21 are riveted or welded together. The mounting portion a42 and the mounting portion B21 have the same size and are slightly larger than the arc-shaped rib 44, which is beneficial to more firmly connecting the hub 40 and the blade 20.
Preferably, arc ribs 44 are arranged between the mounting parts A42; an arc-shaped hole A45 is formed between the arc-shaped rib 44 and the rotating shaft hole 47 in a hollow mode. Preferably, the vertical cross-section of the arc-shaped ribs 44 is waist-shaped, which is beneficial to reducing weight.
Preferably, the arc-shaped rib 44 is provided with a through hole B46 therein. The through hole B46 is preferably a rectangular hole extending transversely through the arcuate rib 44. One end of the arc rib 44 is connected to the hub 40, and the other end of the arc rib 44 is connected to the mounting portion a42. The arc ribs 44 improve the structure of the hub 40, and the stress performance is better. The arc-shaped holes A45 and the through holes B46 reduce the weight of the hub 40, allow the hub 40 to have elasticity, and increase the deformation resistance of the hub 40.
Preferably, the mounting frame 30 includes a mounting frame a31 disposed on the base body 10, and a mounting beam 32 disposed on the mounting frame a 31; the permanent magnet motor 11 is arranged on the mounting beam 32. The number of the mounting beams 32 is preferably two, the mounting frame a31 and the mounting beams 32 are preferably fixed through screws, and the distance between the two mounting beams 32 is adjustable, so that the mounting device can adapt to different mounting of the permanent magnet motor 11.
Preferably, the base 10 is disposed at the air outlet 16 at the top of the tower 15. The cooling tower fan works, so that wind can enter from the air inlet at the bottom of the tower tube 15 and then is discharged from the air outlet 16, and the heat exchange performance is higher.
To sum up, the utility model discloses a design focus lies in, its cooling tower fan that permanent-magnet machine directly driven adopts 11 direct drive impellers of permanent-magnet machine to rotate, has simplified transmission structure, and kinetic energy can not lose, maintains simply, and the speed governing is convenient, can slowly accelerate during the start-up, is favorable to protecting the part.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a cooling tower fan that permanent-magnet machine directly driven which characterized in that: comprises a seat body, a permanent magnet motor, a hub and a plurality of blades; a mounting frame is arranged at the central position of the seat body, and the permanent magnet motor is arranged on the mounting frame; the output shaft of the permanent magnet motor is provided with threads and a key;
a rotating shaft hole is formed in the center of the hub, and a key groove is formed in the rotating shaft hole; an output shaft of the permanent magnet motor penetrates through the rotating shaft hole and then is screwed together with a nut, and the key is clamped in the key groove; the blades are arranged at the hub at equal intervals.
2. The cooling tower fan directly driven by the permanent magnet motor as claimed in claim 1, wherein: the hub is provided with a plurality of mounting parts A, and the blades are provided with mounting parts B; the installation part A is connected with the installation part B through screws.
3. The cooling tower fan directly driven by the permanent magnet motor as claimed in claim 2, wherein: the blade and the mounting part B are riveted or welded together.
4. The cooling tower fan directly driven by the permanent magnet motor as claimed in claim 2, wherein: the installation part A has four, the blade has four.
5. The cooling tower fan directly driven by the permanent magnet motor as claimed in claim 2, wherein: arc ribs are arranged between the mounting parts A; arc holes A are formed between the arc ribs and the rotating shaft holes in a hollow mode.
6. The cooling tower fan directly driven by the permanent magnet motor according to claim 5, wherein: the arc-shaped ribs are internally provided with through holes B.
7. The cooling tower fan directly driven by the permanent magnet motor as claimed in claim 1, wherein: the mounting rack comprises a mounting rack A arranged on the seat body and a mounting beam arranged on the mounting rack A; the permanent magnet motor is arranged on the mounting beam.
8. The cooling tower fan directly driven by the permanent magnet motor as claimed in claim 1, wherein: the base body is arranged at the air outlet at the top of the tower barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221324880.4U CN217898222U (en) | 2022-05-30 | 2022-05-30 | Cooling tower fan directly driven by permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221324880.4U CN217898222U (en) | 2022-05-30 | 2022-05-30 | Cooling tower fan directly driven by permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217898222U true CN217898222U (en) | 2022-11-25 |
Family
ID=84112401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221324880.4U Active CN217898222U (en) | 2022-05-30 | 2022-05-30 | Cooling tower fan directly driven by permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217898222U (en) |
-
2022
- 2022-05-30 CN CN202221324880.4U patent/CN217898222U/en active Active
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