Direct-driven fan structure of cooling tower

Abstract

The utility model provides a cooling tower direct-driven fan structure which comprises a mounting cylinder, a fan assembly and an adjusting assembly, the fan assembly used for controlling the rotating speed of a fan is arranged in the mounting cylinder, and the adjusting assembly used for adjusting the included angle of fan blades is arranged in the fan assembly. The fan blade can be simply and conveniently controlled to rotate, the use efficiency is improved, meanwhile, the angle of the fan blade can be rapidly adjusted, and use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower air cooling, and more specifically, to a cooling tower direct drive fan structure. Background Technology

[0002] A cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and release it into the atmosphere to lower the water temperature. Its cooling effect is achieved by the heat exchange between water and air flow to generate steam. The steam evaporates and carries away the heat, thus dissipating the waste heat generated in industrial processes or refrigeration and air conditioning systems to lower the water temperature and ensure the normal operation of the system. The device is generally barrel-shaped, hence the name cooling tower.

[0003] In existing technologies, cooling fans are driven by a motor, a long-rod coupling, and a reducer. During use, the motor runs at full frequency and cannot adjust the fan speed according to the circulating water temperature, which reduces the efficiency. On the other hand, the air volume produced by existing cooling fans is fixed and cannot be quickly adjusted according to demand, resulting in an unsatisfactory cooling speed and inconvenience in use.

[0004] Therefore, we made improvements and proposed a direct-drive fan structure for cooling towers. Utility Model Content

[0005] The purpose of this utility model is to address the current problem that the fan speed cannot be reasonably adjusted according to the circulating water temperature, which reduces the efficiency of use, cannot be quickly adjusted according to needs, and is inconvenient to use.

[0006] In order to achieve the above-mentioned objectives and improve the above-mentioned problems, this utility model provides a cooling tower direct-drive fan structure, including a mounting cylinder, a fan assembly, and an adjustment assembly. The mounting cylinder is provided with a fan assembly for controlling the fan speed, and the fan assembly is provided with an adjustment assembly for adjusting the fan blade angle.

[0007] The fan assembly includes a permanent magnet direct drive motor disposed inside the mounting cylinder. A rotating disk is fixedly connected to the top of the permanent magnet direct drive motor. A fan blade is disposed inside the rotating disk. A threaded hole is opened at the bottom end of the fan blade. A sliding groove is opened on the side of the fan blade. A center of gravity block is slidably connected inside the sliding groove. A spring is fixedly connected between the center of gravity block and the inside of the sliding groove.

[0008] As a preferred technical solution of this application, a T-shaped groove is provided on the side of the rotating disk.

[0009] As a preferred technical solution of this application, the fan blades correspond one-to-one with the T-slots.

[0010] As a preferred technical solution of this application, the adjustment component includes a limiting post disposed inside the T-shaped groove, a fixing rod fixedly connected inside the limiting post, and an adjustment plate disposed above the fixing rod on the outer surface of the fan blade.

[0011] As a preferred technical solution of this application, the fixing rod has threads at both ends.

[0012] As a preferred technical solution of this application, the fixing rod is threadedly connected to the fan blade.

[0013] As a preferred technical solution of this application, the adjusting plates between the fan blades are fixedly connected by a connecting plate.

[0014] As a preferred technical solution of this application, a dustproof net is fixedly connected to the top of the mounting cylinder.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In the scheme of this application:

[0017] 1. By manually activating the permanent magnet direct drive motor and fan blades, the motor drives the rotating disk, which in turn drives the fan blades. During the fan blade rotation, the center of gravity block slides along the edge of the blade within a groove, compressing the spring and causing the center of gravity to shift outward, accelerating the fan blade rotation. The center of gravity block, located at the root of the fan blade, causes the overall center of gravity to shift downward, thus altering the vibration characteristics and dynamic stability of the fan blades, reducing the rotation speed, and generating wind. This allows for easy control of the fan blade rotation, improving efficiency and solving the problem in existing technologies where the fan speed cannot be adjusted reasonably based on the circulating water temperature, thus reducing efficiency.

[0018] 2. By using a fixed rod, an adjusting plate, and a connecting plate, pulling the adjusting plate causes the fan blades to rotate at an angle on the fixed rod. At the same time, the adjusting plate drives other fan blades to rotate at an angle synchronously through the connecting plate. This enables rapid adjustment of the fan blade angle, making it convenient to use and solving the problem of existing technologies that cannot be quickly adjusted according to needs and are inconvenient to use. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of the direct-drive fan structure for the cooling tower provided in this application;

[0020] Figure 2 This is a cross-sectional structural diagram of the fan assembly in the direct-drive fan structure of the cooling tower provided in this application;

[0021] Figure 3 This is a schematic diagram of the regulating plate and connecting plate in the direct-drive fan structure of the cooling tower provided in this application;

[0022] Figure 4 This is a schematic diagram of the limiting column, fixing rod and T-slot in the direct-drive fan structure of the cooling tower provided in this application;

[0023] Figure 5 for Figure 1 Enlarged structural diagram at point A in the middle.

[0024] The image shows:

[0025] 1. Mounting cylinder; 2. Fan assembly; 3. Adjustment assembly; 201. Permanent magnet direct drive motor; 202. Rotating disk; 203. Fan blade; 204. Spring; 205. Center of gravity block; 301. Limiting post; 302. Fixing rod; 303. Adjustment plate; 4. T-slot; 5. Connecting plate; 6. Dustproof net. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0028] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] Example

[0031] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A cooling tower direct-drive fan structure includes a mounting cylinder 1, a fan assembly 2, and an adjustment assembly 3. The mounting cylinder 1 is equipped with a fan assembly 2 for controlling the fan speed, and the fan assembly 2 is equipped with an adjustment assembly 3 for adjusting the included angle of the fan blades 203.

[0032] Fan assembly 2 includes a permanent magnet direct drive motor 201 disposed inside mounting cylinder 1. A rotating disk 202 is fixedly connected to the top of the permanent magnet direct drive motor 201. Fan blades 203 are disposed inside the rotating disk 202. A threaded hole is opened at the bottom end of the fan blades 203. A sliding groove is opened on the side of the fan blades 203. A center weight 205 is slidably connected inside the sliding groove. A spring 204 is fixedly connected between the center weight 205 and the sliding groove. When the permanent magnet direct drive motor 201 is manually turned on, it controls the rotating disk 202 to rotate. The rotating disk 202 directly drives the fan blade 203 to rotate. During the rotation of the fan blade 203, its center of gravity block slides and compresses the spring 204 in the groove of the fan blade 203 towards the edge of the fan blade 203, causing the center of gravity to shift outward and accelerate the rotation of the fan blade 203. The center of gravity block 205 is located at the root of the fan blade 203, which causes the overall center of gravity to move downward, thereby changing the vibration characteristics and dynamic stability of the fan blade 203, reducing the rotation speed, and generating wind power. This allows for easy control of the rotation of the fan blade 203 and improves the efficiency of use.

[0033] Furthermore, such as Figure 1 , Figure 3 and Figure 4 As shown, the adjustment assembly 3 includes a limiting post 301 disposed inside the T-shaped groove 4. A fixing rod 302 is fixedly connected inside the limiting post 301. Above the fixing rod 302 is an adjustment plate 303 disposed on the outer surface of the fan blade 203. Manually pulling the adjustment plate 303 causes the fan blade 203 to rotate at one end of the fixing post inside the limiting post 301, thereby changing the angle between the fan blade 203 and the rotating disk 202. At the same time, since the adjustment plates 303 between the fan blades 203 are fixedly connected by the connecting plate 5, pulling the adjustment plate 303 causes the other fan blades 203 to rotate at an angle via the connecting plate 5, thereby enabling quick adjustment of the angle of the fan blades 203 for convenient use.

[0034] The usage process of the direct-drive fan structure for cooling towers provided by this utility model is as follows:

[0035] During use, manually pulling the adjustment plate 303 causes the fan blade 203 to rotate at one end of the fixed column within the limiting column 301, thereby changing the angle between the fan blade 203 and the rotating disk 202. Since the adjustment plates 303 are fixedly connected to the fan blades 203 via the connecting plate 5, pulling the adjustment plate 303 causes it to rotate the other fan blades 203 via the connecting plate 5, allowing for quick adjustment of the fan blade angle for convenient use. Simultaneously, the permanent magnet direct drive motor 201 is activated. Since the permanent magnet direct drive motor 201 uses frequency conversion control, its speed can be controlled, causing the permanent magnet direct drive motor 201 to drive the rotating disk 202 to rotate. The rotating disk 202 then directly drives the fan blades 203 to rotate, thus generating wind power.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A direct-drive fan structure for a cooling tower, characterized in that, It includes a mounting cylinder (1), a fan assembly (2), and an adjustment assembly (3). The mounting cylinder (1) is equipped with a fan assembly (2) for controlling the fan speed, and the fan assembly (2) is equipped with an adjustment assembly (3) for adjusting the angle of the fan blades (203). The fan assembly (2) includes a permanent magnet direct drive motor (201) disposed inside the mounting cylinder (1). A rotating disk (202) is fixedly connected to the top of the permanent magnet direct drive motor (201). A fan blade (203) is disposed inside the rotating disk (202). A threaded hole is opened at the bottom of the fan blade (203). A sliding groove is opened on the side of the fan blade (203). A center weight block (205) is slidably connected inside the sliding groove. A spring (204) is fixedly connected between the center weight block (205) and the sliding groove.

2. The cooling tower direct-drive fan structure according to claim 1, characterized in that, The rotating disk (202) has a T-shaped groove (4) on its side.

3. The cooling tower direct-drive fan structure according to claim 2, characterized in that, The fan blades (203) correspond one-to-one with the T-slots (4).

4. The cooling tower direct-drive fan structure according to claim 3, characterized in that, The adjustment component (3) includes a limiting post (301) disposed inside the T-groove (4), a fixing rod (302) fixedly connected inside the limiting post (301), and an adjustment plate (303) disposed above the fixing rod (302) on the outer surface of the fan blade (203).

5. A cooling tower direct-drive fan structure according to claim 4, characterized in that, The fixing rod (302) has threads at both ends.

6. A cooling tower direct-drive fan structure according to claim 5, characterized in that, The fixing rod (302) is threadedly connected to the fan blade (203).

7. A cooling tower direct-drive fan structure according to claim 6, characterized in that, The adjusting plates (303) between the fan blades (203) are fixedly connected by a connecting plate (5).

8. A direct-drive fan structure for a cooling tower according to claim 7, characterized in that, A dustproof net (6) is fixedly connected to the top of the mounting cylinder (1).

Images