Central air-conditioning cooling tower with silencing device

Abstract

The utility model relates to the technical field of central air-conditioning equipment, and discloses a central air-conditioning cooling tower with a silencing device, which comprises a tower body, the top of the tower body is movably connected with a silencing mechanism, and one side of the silencing mechanism is fixedly connected with a clamping mechanism. A dynamic channel formed by the splitter plate and the sound insulation plate can automatically adjust the sound wave propagation path according to the noise frequency characteristic, low-frequency noise forms reflection resonance in a wide channel, high-frequency noise is efficiently absorbed by the sound absorption cotton in a narrow space, the resonance effect of the through holes and the scattering effect of the spoiler are combined, and the sound absorption effect of the spoiler is improved. A resistive and resistant composite noise elimination system is constructed, targeted treatment of full-band noise is achieved, a resonance system formed by the through holes and the sound absorption cotton has excellent absorption capacity on medium-frequency noise, scattering and absorption of high-frequency sound waves are enhanced through the spoilers, a reflection path of low-frequency sound waves is optimized through the layout of the splitter plates and the sound insulation plates, and the noise reduction effect is improved. The multi-structure synergistic effect breaks through the limitation of a traditional single silencing mode.

Description

Technical Field

[0001] This utility model relates to the field of central air conditioning equipment technology, and in particular to a central air conditioning cooling tower with a noise reduction device. Background Technology

[0002] With the acceleration of urbanization and the densification of building space, central air conditioning systems, as the core infrastructure of modern buildings, are increasingly widely used. As a key device for heat dissipation in the system, central air conditioning cooling towers achieve refrigeration cycles through heat exchange between water and air. However, during operation, the noise generated by fan rotation, water flow impact, and equipment vibration is extremely high, which seriously affects the living and working environment of surrounding residents and the quality of the ecology. This noise pollution problem is even more prominent in noise-sensitive areas such as hospitals and schools.

[0003] However, existing central air conditioning cooling tower noise reduction technology still has many shortcomings. First, existing noise reduction devices lack specificity in noise absorption and cannot simultaneously address broadband noise control. For example, while traditional resistive silencers have a certain absorption effect on high-frequency noise, their effect is minimal when dealing with low-frequency vibration noise from fans. On the other hand, reactive silencers can handle low-frequency noise but cannot cope with high-frequency aerodynamic noise, resulting in low overall noise reduction efficiency. Second, existing noise reduction devices are mostly fixedly installed in connection with cooling towers, requiring complete disassembly during equipment maintenance and repair, which is cumbersome, time-consuming, and labor-intensive.

[0004] Therefore, those skilled in the art have provided a central air conditioning cooling tower with a noise reduction device to solve the problems mentioned in the background art. Utility Model Content

[0005] To address the challenges of simultaneously mitigating broadband noise and reassembling silencing devices in traditional central air conditioning cooling towers, this invention provides a central air conditioning cooling tower with a silencing device, employing the following technical solution:

[0006] A central air conditioning cooling tower with a silencing device includes a tower body, a silencing mechanism movably connected to the top of the tower body, a locking mechanism fixedly connected to one side of the silencing mechanism, a silencing cover including a silencing cover, the bottom of the silencing cover being movably connected to the tower body, a flow divider plate slidably connected to the inner cavity of the silencing cover, sound insulation plates slidably connected to both sides of the flow divider plate, the other side of the sound insulation plate being slidably connected to the silencing cover, through holes being opened on the surface of the sound insulation plate, sound-absorbing cotton being provided on one side of the through holes, the top of the sound-absorbing cotton being fixedly connected to the flow divider plate, and a baffle plate being provided at the bottom of the sound-absorbing cotton, one side of the baffle plate being connected to the flow divider plate by bolts.

[0007] Optionally, the locking mechanism includes a housing, one side of which is fixedly connected to a silencer cover, a locking block is slidably connected to the inner cavity of the housing, a pull rod is fixedly connected to one side of the locking block, a first spring is provided on the surface of the pull rod, one side of the first spring is fixedly connected to the housing, and a rotating handle is slidably connected to the other side of the locking block, the bottom of the rotating handle being fixedly connected to the tower body.

[0008] Optionally, a ladder is provided at the bottom of the handle, and one side of the ladder is fixedly connected to the tower body.

[0009] Optionally, a groove is provided on the top of the housing, and a slider is fixedly connected to the top of the card block, with one side of the slider slidably connected to the groove.

[0010] Optionally, the diverter plate has movable grooves on both sides, and one side of the sound insulation plate is slidably connected to the movable groove.

[0011] Optionally, a support rod is fixedly connected to the bottom of the tower body, a limit groove is formed in the inner cavity of the support rod, a shock-absorbing rod is slidably connected to the inner cavity of the limit groove, a second spring is provided on the surface of the shock-absorbing rod, and the top of the second spring is fixedly connected to the support rod.

[0012] Optionally, a damping sleeve is provided on the surface of the shock absorber rod, and one side of the damping sleeve is fixedly connected to the support rod.

[0013] Optionally, a pressure plate is provided at the bottom of the damping sleeve, and the inner side of the pressure plate is fixedly connected to the shock absorber rod.

[0014] In summary, this utility model has the following beneficial effects:

[0015] 1. The dynamic channel formed by the diversion plate and the sound insulation plate of this utility model can automatically adjust the sound wave propagation path according to the noise frequency characteristics. Low-frequency noise forms a reflection resonance in the wider channel, while high-frequency noise is efficiently absorbed by the sound-absorbing cotton in the narrow space. Combined with the resonance effect of the through holes and the scattering effect of the baffle plate, a resistive and reactive composite noise reduction system is constructed to achieve targeted noise control across the entire frequency band. Moreover, the resonance system formed by the through holes and the sound-absorbing cotton has excellent absorption capacity for mid-frequency noise. The baffle plate enhances the scattering and absorption of high-frequency sound waves, and the layout of the diversion plate and the sound insulation plate optimizes the reflection path of low-frequency sound waves. This multi-structure synergistic effect breaks through the limitations of traditional single noise reduction methods.

[0016] 2. When installing the silencer cover, simply rotate the handle to align with the locking block and press it down. The handle will then quickly enter the locking position of the housing, achieving precise positioning and rapid installation of the silencer cover and the tower body. This significantly shortens installation time and improves construction efficiency. The first spring continuously provides thrust to the locking block, ensuring a tight fit between the locking block and the handle. This effectively resists external forces such as fan vibration and airflow impact during the operation of the cooling tower, preventing the silencer cover from loosening or shifting. It ensures the long-term stable operation of the silencer mechanism and avoids a decrease in silencer performance or the generation of secondary noise due to loose connections. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the silencing mechanism of this utility model.

[0019] Figure 3 This is an enlarged view of section A of this utility model.

[0020] Figure 4 This is an enlarged view of section B of this utility model.

[0021] Figure 5 This is a structural schematic diagram of the support rod of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Tower body; 2. Silencing mechanism; 201. Silencing cover; 202. Diverter plate; 203. Sound insulation plate; 204. Through hole; 205. Sound-absorbing cotton; 206. Baffle plate; 3. Locking mechanism; 301. Shell; 302. Locking block; 303. Pull rod; 304. First spring; 305. Rotary handle; 4. Ladder; 5. Slide groove; 6. Sliding block; 7. Movable groove; 8. Support rod; 9. Limiting groove; 10. Shock absorber rod; 11. Second spring; 12. Damping sleeve; 13. Pressure plate. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0025] Example 1:

[0026] Please refer to Figure 1-5A central air conditioning cooling tower with a noise reduction device includes a tower body 1. A noise reduction mechanism 2 is movably connected to the top of the tower body 1. A locking mechanism 3 is fixedly connected to one side of the noise reduction mechanism 2. The noise reduction mechanism 2 includes a noise reduction cover 201. The bottom of the noise reduction cover 201 is movably connected to the tower body 1. A flow divider 202 is slidably connected to the inner cavity of the noise reduction cover 201. Sound insulation plates 203 are slidably connected to both sides of the flow divider 202. The other side of the sound insulation plate 203 is slidably connected to the noise reduction cover 201. A through hole 204 is opened on the surface of the sound insulation plate 203. A sound-absorbing cotton 205 is provided on one side of the through hole 204. The top of the sound-absorbing cotton 205 is fixedly connected to the flow divider 202. A baffle 206 is provided at the bottom of the sound-absorbing cotton 205. One side of the baffle 206 is connected to the flow divider 202 by bolts.

[0027] In this embodiment, there are multiple through holes 204 and sound-absorbing cotton 205 arranged in an array. This layout guides the airflow evenly through the silencing area, avoiding secondary noise caused by airflow turbulence and ensuring that ventilation efficiency is not affected. The sound-absorbing cotton 205 is honeycomb-shaped, which greatly increases the surface area of ​​the sound-absorbing cotton 205. After the sound waves enter the pores, they will undergo multiple reflections, refractions and diffractions on the honeycomb wall, which prolongs the propagation path of the sound waves inside the sound-absorbing cotton 205 and allows the sound waves to fully contact the sound-absorbing material. The connection method between the sound insulation plate 203 and the diversion plate 202 allows the sound insulation plate 203 to be directly removed individually when it is damaged, aged, or its performance degrades due to long-term use, without disassembling other related components.

[0028] Example 2:

[0029] Reference Figure 1-5 The locking mechanism 3 includes a housing 301. One side of the housing 301 is fixedly connected to the silencer 201. A locking block 302 is slidably connected to the inner cavity of the housing 301. A pull rod 303 is fixedly connected to one side of the locking block 302. A first spring 304 is provided on the surface of the pull rod 303. One side of the first spring 304 is fixedly connected to the housing 301. A rotating handle 305 is slidably connected to the other side of the locking block 302. The bottom of the rotating handle 305 is fixedly connected to the tower body 1. A ladder 4 is provided at the bottom of the rotating handle 305. One side of the ladder 4 is fixedly connected to the tower body 1. A sliding groove 5 is opened at the top of the housing 301. A sliding groove 5 is fixedly connected to the top of the locking block 302. Block 6, slider 6 is slidably connected to slide groove 5 on one side, diverter plate 202 has movable grooves 7 on both sides, sound insulation plate 203 is slidably connected to movable groove 7 on one side, support rod 8 is fixedly connected to the bottom of tower body 1, limit groove 9 is opened in the inner cavity of support rod 8, shock absorber rod 10 is slidably connected to the inner cavity of limit groove 9, second spring 11 is provided on the surface of shock absorber rod 10, the top of second spring 11 is fixedly connected to support rod 8, damping sleeve 12 is provided on the surface of shock absorber rod 10, one side of damping sleeve 12 is fixedly connected to support rod 8, pressure plate 13 is provided at the bottom of damping sleeve 12, and the inner side of pressure plate 13 is fixedly connected to shock absorber rod 10.

[0030] In this embodiment: there are two locking mechanisms 3, symmetrically distributed at the connection between the silencer 201 and the tower body 1, which can evenly distribute the external force on the silencer 201 and avoid loosening or displacement of the connection due to uneven force on a single locking mechanism 3. The other side of the pull rod 303 penetrates the inner cavity of the housing 301 and extends to the surface of the housing 301, allowing the operator to pull the pull rod 303 from the outside and remove the silencer 201, improving the convenience of the device. There are two ladders 4, located under the two rotating handles 305, so that the operator can remove or install the silencer 201 by climbing the ladders 4. The sliding groove 5 and the slider 6 are designed as locking blocks. 302 provides precise guidance and positioning. The inner cavity of the movable groove 7 is equipped with a friction pad. One side of the friction pad is fixedly connected to the diverter plate 202, which can increase the friction between the diverter plate 202 and the sound insulation plate 203. The damping rod 10 slides in the limiting groove 9. With the elastic deformation of the second spring 11, it can effectively absorb and buffer the vibration energy transmitted by the tower body 1. The damping sleeve 12 has the characteristics of viscoelastic material. When the damping rod 10 is displaced by vibration, the damping sleeve 12 will generate internal friction, converting the vibration energy into heat energy and dissipating it. The pressure plate 13 provides a stable bearing surface for the second spring 11, ensuring that the second spring 11 can effectively participate in vibration damping.

[0031] The implementation principle of this utility model is as follows: When in use, the sound waves generated by the fan enter the silencer 201 with the airflow. The airflow and sound waves first collide with the diversion plate 202, which evenly distributes them to the sound insulation plate 203 areas on both sides. When the sound waves and airflow reach the baffle plate 206, its irregular surface further scatters the sound waves, increasing the probability of contact with the sound-absorbing cotton 205. When the sound waves pass through the through holes 204 on the surface of the sound insulation plate 203, part of them are reflected back into the silencer 201, extending the propagation path; the other part enters the sound-absorbing cotton 205 area. During disassembly, pull the lever 303 outward. The lever 303 drives the locking block 302 to move along the slide groove 5. The locking block 302 compresses the first spring 304. Then, rotate the handle 305 to disengage it from the inner cavity of the housing 301. Finally, release the lever 303. The spring extends and drives the locking block 302 to reset. The lever 303 follows the locking block 302 to reset, thus completing the disassembly. During installation, simply rotate the handle 305. Because the contact surface between the locking block 302 and the handle 305 is inclined, when it touches the handle 305, it will be squeezed and moved, allowing the handle 305 to enter.

[0032] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A central air conditioning cooling tower with a noise reduction device, comprising a tower body (1), characterized in that: The top of the tower body (1) is movably connected to a silencing mechanism (2), and a locking mechanism (3) is fixedly connected to one side of the silencing mechanism (2); The silencing mechanism (2) includes a silencing cover (201), the bottom of which is movably connected to the tower body (1). A flow divider (202) is slidably connected to the inner cavity of the silencing cover (201). Sound insulation plates (203) are slidably connected to both sides of the flow divider (202). The other side of the sound insulation plate (203) is slidably connected to the silencing cover (201). A through hole (204) is opened on the surface of the sound insulation plate (203). A sound-absorbing cotton (205) is provided on one side of the through hole (204). The top of the sound-absorbing cotton (205) is fixedly connected to the flow divider (202). A baffle plate (206) is provided at the bottom of the sound-absorbing cotton (205). One side of the baffle plate (206) is connected to the flow divider (202) by bolts.

2. A central air conditioning cooling tower with a noise reduction device according to claim 1, characterized in that: The locking mechanism (3) includes a housing (301), one side of which is fixedly connected to a soundproof cover (201). A locking block (302) is slidably connected to the inner cavity of the housing (301). A pull rod (303) is fixedly connected to one side of the locking block (302). A first spring (304) is provided on the surface of the pull rod (303). One side of the first spring (304) is fixedly connected to the housing (301). A rotating handle (305) is slidably connected to the other side of the locking block (302). The bottom of the rotating handle (305) is fixedly connected to the tower body (1).

3. A central air conditioning cooling tower with a noise reduction device according to claim 2, characterized in that: The bottom of the rotating handle (305) is provided with a ladder (4), and one side of the ladder (4) is fixedly connected to the tower body (1).

4. A central air conditioning cooling tower with a noise reduction device according to claim 2, characterized in that: The top of the housing (301) is provided with a sliding groove (5), and the top of the card block (302) is fixedly connected with a slider (6), and one side of the slider (6) is slidably connected to the sliding groove (5).

5. A central air conditioning cooling tower with a noise reduction device according to claim 1, characterized in that: The diversion plate (202) has movable grooves (7) on both sides, and the sound insulation plate (203) is slidably connected to the movable grooves (7) on one side.

6. A central air conditioning cooling tower with a noise reduction device according to claim 1, characterized in that: The bottom of the tower body (1) is fixedly connected to a support rod (8). The inner cavity of the support rod (8) has a limiting groove (9). The inner cavity of the limiting groove (9) is slidably connected to a shock absorber rod (10). The surface of the shock absorber rod (10) is provided with a second spring (11). The top of the second spring (11) is fixedly connected to the support rod (8).

7. A central air conditioning cooling tower with a noise reduction device according to claim 6, characterized in that: The surface of the shock absorber (10) is provided with a damping sleeve (12), and one side of the damping sleeve (12) is fixedly connected to the support rod (8).

8. A central air conditioning cooling tower with a silencing device according to claim 7, characterized in that: The damping sleeve (12) is provided with a pressure plate (13) at the bottom, and the inner side of the pressure plate (13) is fixedly connected to the shock absorber rod (10).

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