A central air conditioning cooling tower noise reduction system

Abstract

This utility model discloses a noise reduction system for a central air conditioning cooling tower, including a tower body, a fan installed on the tower body, a water distribution trough, packing material, and a water collection trough. The water distribution trough, packing material, and water collection trough are arranged at intervals from top to bottom. The fan is located beside the packing material. The system is characterized in that: a water receiving tray is provided between the packing material and the bottom of the water collection trough, with the top of the water receiving tray positioned close to the bottom of the packing material; the top of the water receiving tray has a water collection cavity facing the packing material, and the bottom of the water collection cavity has multiple drainage holes communicating with the bottom surface of the water receiving tray; a guide rod is detachably installed in each drainage hole, with a gap between the outer surface of the guide rod and at least a portion of the inner wall of the drainage hole; the bottom of the guide rod passes through the drainage hole and is positioned below the water receiving tray, with the bottom of the guide rod positioned close to the bottom of the water collection trough. This utility model reduces noise and is more environmentally friendly.

Description

Technical Field

[0001] This utility model relates to a central air conditioning cooling tower, more particularly to a central air conditioning cooling tower noise reduction system, and especially to an open central air conditioning cooling tower. Background Technology

[0002] A central air conditioning 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. The working principle of the cooling tower is as follows: hot water is sprayed onto the surface of the water-spraying packing material and then comes into contact with the passing moving air. The hot water then exchanges heat with the cold air, thus cooling the water. The cooled water then falls into a collection basin, where it is pumped to a heat exchanger to absorb heat again.

[0003] For an open crossflow cooling tower, the tower body has at least one horizontally arranged fan, preferably more than two fans. Water distribution troughs are installed on the tower body on both sides of the fans (fans arranged from left to right). Packing material is placed below the water distribution troughs. The fans are positioned between the water distribution troughs and the packing material on both sides. Water from the heat exchanger is sent to the water distribution troughs on both sides through water pipes. Multiple drainage holes are evenly distributed at the bottom of the water distribution troughs, communicating with the bottom surface of the troughs. Water in the water distribution troughs drips onto the packing material through the drainage holes. Then, the operation of the fans cools the water on the packing material. Finally, the water dripping from the packing material falls into a collection tank and is returned to the heat exchanger. However, this structure has the following drawbacks:

[0004] There is a certain height between the bottom of the packing material and the bottom of the collection tank. This height is mainly to reserve water storage space to prevent water in the collection tank from overflowing due to insufficient pumping or drainage. The height difference between the bottom of the packing material and the bottom of the collection tank can exceed 30cm, even reaching 50-70cm. Given this significant height difference, and the fact that the water depth in the collection tank is normally relatively low (i.e., a large height difference between the liquid surface and the bottom of the packing material), water droplets falling from the packing material into the collection tank generate considerable noise, especially when the water level is low. Therefore, solving these technical problems is a direction that those skilled in the art need to address. Summary of the Invention

[0005] The purpose of this invention is to provide a noise reduction system for central air conditioning cooling towers. By using this structure, noise is effectively reduced, making it more environmentally friendly.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a noise reduction system for a central air conditioning cooling tower, comprising a tower body, a fan installed on the tower body, a water distribution trough, packing material, and a water collection trough. The water distribution trough, packing material, and water collection trough are arranged at intervals from top to bottom. The fan is located beside the packing material. A water receiving tray is also provided between the packing material and the bottom of the water collection trough. The top of the water receiving tray is located near the bottom of the packing material.

[0007] The top of the water receiving tray has a water collection cavity facing the packing material, and the bottom of the water collection cavity is provided with a plurality of drainage holes communicating with the bottom surface of the water receiving tray.

[0008] A guide rod is detachably installed in each of the drainage holes. There is a gap between the outer surface of the guide rod and at least part of the inner wall of the drainage hole. The bottom of the guide rod passes through the drainage hole and is located below the water receiving tray. The bottom of the guide rod is located close to the bottom of the water collection tank.

[0009] In the above technical solution, a limiting head is provided on the outer surface of the top of the guide rod, and the bottom outer edge of the limiting head abuts against the bottom surface of the water collection cavity next to the drain hole.

[0010] In the above technical solution, the drainage hole includes a central hole and at least two connecting holes arranged around the outside of the central hole. The connecting holes communicate with the central hole, and the bottom of the guide rod passes through the central hole and is located below the bottom surface of the water receiving tray.

[0011] In the above technical solution, the top of the guide rod is provided with a tapered head that is larger at the top and smaller at the bottom. The outer diameter of the top of the tapered head is larger than the diameter of the intermediate hole. The outer surface of the tapered head abuts against the inner surface of the intermediate hole, or the bottom surface of the tapered head abuts against the bottom surface of the water collection cavity outside the intermediate hole.

[0012] In the above technical solution, the bottom of the water distribution trough is provided with a plurality of drainage holes that communicate with the bottom surface of the water distribution trough, and the sum of the areas of all the connecting holes is greater than the sum of the areas of all the drainage holes.

[0013] In the above technical solution, the connecting hole is a strip hole, a square hole, a round hole, an elliptical hole, or a polygonal hole.

[0014] In the above technical solution, there are three connecting holes, which make the drainage holes form a three-petal flower-shaped structure.

[0015] In the above technical solution, the distance between the water receiving tray and the bottom surface of the packing is 3cm-8cm, the bottom of the guide rod is inserted into the water collection tank, and the distance between the bottom of the guide rod and the bottom of the water collection tank is 1cm-3cm.

[0016] And / or, the surface of the water receiving tray is coated with an anti-corrosion layer, and the guide rod is made of plastic.

[0017] In the above technical solution, there are at least two sets of fans, and multiple sets of fans are arranged laterally at intervals. The water distribution trough, packing material and water receiving tray are provided on the tower body on the front and rear sides of the fans.

[0018] In the above technical solution, the packing material, water distribution trough, and fan are arranged above the water collection trough.

[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0020] 1. In this utility model, a water receiving tray is set between the packing material and the bottom of the water collection tank. The water receiving tray is set close to the packing material. A water collection cavity is set on the water receiving tray to collect the water dripping from the packing material. A drain hole is set at the bottom of the water collection cavity. At the same time, a guide rod is set in the drain hole so that the water discharged from the drain hole can flow into the water collection tank along the guide rod, thereby effectively reducing noise and making it more environmentally friendly.

[0021] 2. In this utility model, since the water receiving tray is close to the packing material, the noise of water droplets falling from the packing material into the water receiving tray is less than the noise of water droplets falling directly into the water collection tank. Furthermore, the water is guided to the water collection tank by the guide rod, which also ensures smooth drainage.

[0022] 3. In this utility model, the area of ​​the drain hole is larger than the area of ​​the water drop hole in the water distribution trough, which can effectively prevent the water dripping from the filler into the water receiving tray from overflowing the water receiving tray. This allows the water to be discharged from the drain hole along the guide rod, minimizing the risk of water overflowing from the water receiving tray and dripping directly into the water collection trough, thus generating significant noise and making the system more environmentally friendly.

[0023] 4. In this utility model, the guide rod is made of plastic, and its top is limited by a limiting head or a conical head, which facilitates the replacement of the guide rod and the replacement cost is low;

[0024] 5. The water receiving tray in this utility model can be installed on existing cooling towers that are in normal use, making it easy to modify. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure in Embodiment 1 of this utility model (the diagram schematically shows one guide rod, and other guide rods are not shown);

[0026] Figure 2 yes Figure 1 Left view (part of the guide rod is shown in the figure);

[0027] Figure 3 yes Figure 1 Top view;

[0028] Figure 4 This is a top view of the water receiving tray in Embodiment 1 of this utility model (the guide rod is not shown);

[0029] Figure 5 This is a schematic diagram of the drainage hole in Embodiment 1 of this utility model;

[0030] Figure 6 This is a top view of a drainage hole with a guide rod installed in one of the first embodiments of this utility model;

[0031] Figure 7 This is a partial cross-sectional view of the connection between the guide rod and the drainage hole in Embodiment 1 of this utility model.

[0032] The components are: 1. Tower body; 2. Fan; 3. Water distribution trough; 4. Packing material; 5. Water collection trough; 6. Water receiving tray; 7. Water collection cavity; 8. Drain hole; 9. Guide rod; 10. Water inlet pipe; 11. Intermediate hole; 12. Connecting hole; 13. Conical head; 14. Drain hole. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0034] Example 1: See Figure 1-7 As shown, a noise reduction system for a central air conditioning cooling tower includes a tower body 1, a fan 2 installed on the tower body 1, a water distribution trough 3, a packing 4, and a water collection trough 5. The water distribution trough 3, the packing 4, and the water collection trough 5 are arranged at intervals from top to bottom. The fan 2 is located beside the packing 4. A water receiving tray 6 is also provided between the packing 4 and the bottom of the water collection trough 5. The top of the water receiving tray 6 is located near the bottom of the packing 4.

[0035] The top of the water receiving tray 6 has a water collecting cavity 7 facing the packing 4, and the bottom of the water collecting cavity 7 is provided with a plurality of drainage holes 8 communicating with the bottom surface of the water receiving tray 6.

[0036] A guide rod 9 is detachably installed in each of the drainage holes 8. There is a gap between the outer surface of the guide rod 9 and at least part of the inner wall of the drainage hole 8. The bottom of the guide rod 9 passes through the drainage hole 8 and is located below the water receiving tray 6. The bottom of the guide rod 9 is located close to the bottom of the water collection tank 5.

[0037] In this invention, there are at least two sets of fans, and multiple sets of fans are arranged laterally at intervals. Figure 1In the direction shown, there are two sets of fans, which are arranged on the left and right sides at intervals. There are two sets of water distribution tanks, packing and water receiving trays, which are respectively set at the front and rear of the fans. There is one set of water collection tanks, which are set at the lower part of the tower body. The water collection tank is located directly below the fans, packing and water distribution tanks, and its coverage area is basically the horizontal area of ​​the tower body. The tower body is equipped with an inlet pipe 10 and a drain pipe. The inlet pipe delivers high-temperature water from the heat exchanger into the water distribution trough, which then drips the high-temperature water onto the packing material. When the fan is working, it drives air to flow inward from the packing material at an accelerated speed to contact the water on the packing material more quickly, and then sends it out from the air outlet at the top of the fan. During this process, the contact between the air and the water on the packing material accelerates the cooling of the water. After being cooled by the packing material, the water drips downward into the water collection chamber of the water receiving tray, and then flows downward through the drain hole. After being guided by the guide rod (the water discharged from the drain hole will flow downward along the outer surface of the guide rod), the water flows downward through the guide rod into the water collection trough. The drain pipe is connected to the water collection trough, and the water in the water collection trough is sent back to the heat exchanger through the drain pipe.

[0038] Because there is a significant height difference between the packing material and the bottom of the collection tank (the liquid level in the collection tank will not be particularly high to prevent overflow due to insufficient drainage), and because the water on the packing material will continuously flow downwards, if the water on the packing material drips directly downwards into the collection tank, it will produce a loud noise similar to that of heavy rain dripping onto the ground, steel plate, or water surface. Therefore, in this embodiment, a water receiving tray is provided, which is located near the bottom of the packing material. Thus, when the water on the packing material drips downwards onto the water receiving tray, the noise will be relatively small due to the small height difference between the packing material and the water receiving tray. In particular, the water receiving tray will generally have a certain amount of water (when the water drips from the packing material into the collection chamber, due to the large volume of water, it takes time for the water to drain from the drain hole, so the collection chamber will have a certain level of water). When water droplets from the packing fall into the water collection tray, the noise is extremely low. Because a guide rod is positioned in the center of the drain hole, extending downwards into the collection tank, with its bottom close to the bottom of the tank, water flows downwards along the guide rod due to tension and capillary action. The water drips into the collection tank after reaching its bottom, where it already contains a certain level of water (draining takes time). Preferably, the bottom of the guide rod is below the water surface in the collection tank, ensuring the water flowing downwards directly into the tank, resulting in minimal or no noise. This effectively reduces noise and is more environmentally friendly.

[0039] See Figure 5-7As shown, the drain hole 8 includes a central hole 11 and at least two connecting holes 12 arranged around the outside of the central hole 11. The inner end of the connecting hole 12 communicates with the central hole 11. The bottom of the guide rod 9 passes through the central hole 11 and is located below the bottom surface of the water receiving tray 6.

[0040] The top of the guide rod 9 is provided with a tapered head 13, which is larger at the top and smaller at the bottom. The outer diameter of the top of the tapered head 13 is larger than the diameter of the intermediate hole 10, and the outer diameter of the bottom of the tapered head 13 is equal to the outer diameter of the guide rod 9. The outer surface of the bottom of the tapered head 13 is flush with the outer surface of the guide rod 9. The outer surface of the tapered head 13 abuts against the inner surface of the intermediate hole 11, or the bottom surface of the tapered head abuts against the bottom surface of the water collection cavity outside the intermediate hole (both methods are acceptable; preferably, the lower outer surface of the tapered head abuts against the top inner wall of the intermediate hole). The tapered head does not contact the inner wall of the connecting hole, thus forming a gap between it and the drain hole.

[0041] The connecting hole can be a strip hole, a square hole, a round hole, an elliptical hole, or a polygonal hole.

[0042] There are three connection holes, which make the drainage holes form a three-petal flower-shaped structure.

[0043] In this embodiment, to facilitate drainage and the installation of the guide rod, the drainage hole includes a central hole and multiple connecting holes arranged around the central hole. The central hole is used for the installation and clearance of the guide rod, while the connecting holes are used for drainage. Since the connecting holes are arranged around the central hole, i.e., around the guide rod, during the process of drainage downwards through the connecting holes, the water will flow downwards along the guide rod, thus achieving a guiding effect. A conical head is provided at the top of the guide rod to prevent it from falling downwards. Simultaneously, the presence of the conical head also serves as a guide, allowing some water to flow downwards along the guide rod along the inclined surface of the conical head when water flows downwards from the connecting holes (of course, some water droplets may not flow down the guide rod but will drip downwards, but the amount of water dripping directly downwards is relatively small, thus reducing noise).

[0044] In another embodiment, a limiting head is provided on the outer surface of the top of the guide rod. The bottom outer edge of the limiting head abuts against the bottom surface of the water collection cavity next to the drain hole. For example, the limiting head is a horizontal rod perpendicular to the guide rod, with both ends of the horizontal rod abutting against the bottom surfaces of the water collection cavities on opposite sides of the drain hole. In this embodiment, the drain hole can be circular. The outer diameter of the guide rod is smaller than the diameter of the drain hole, the width of the horizontal rod is smaller than or equal to the diameter of the guide rod, and the length of the horizontal rod is greater than the diameter of the drain hole. Both ends of the horizontal rod along its length abut against the bottom surfaces of the water collection cavities on opposite sides of the drain hole. In this way, the guide rod may contact part of the inner wall of the drain hole, or the outer surface of the guide rod may not contact the inner wall of the drain hole, thus creating a gap between the guide rod and the drain hole, allowing drainage through the gap. To facilitate the detachable replacement and installation of the guide rod, and to limit its movement and prevent it from falling out of the drain hole, a limiting head is provided. This limiting head rests against the bottom surface of the water collection chamber, thus restricting the downward movement of the guide rod. When the guide rod needs replacement, it is simply moved upwards to disengage it from the drain hole. The new guide rod is then passed through the drain hole from the top, with the limiting head resting against the bottom surface of the water collection chamber, thus limiting its upward movement. In this embodiment, the limiting head is replaced with the conical head from Embodiment 1, and the limiting head is not inserted into the central hole.

[0045] See Figure 3 As shown, the bottom of the water distribution trough 3 is provided with multiple drainage holes 14 communicating with the bottom surface of the water distribution trough 3. The sum of the areas of all the connecting holes 12 is greater than the sum of the areas of all the drainage holes 14. The water inlet pipe delivers water into the water distribution trough, where it is stored. The water in the water distribution trough drips downwards through the multiple drainage holes to different positions on the packing material. After the water on the packing material is cooled, it drips from its bottom into the water receiving tray and is discharged through the drain hole. In order to prevent the water in the water receiving tray from overflowing, the drainage speed in the water receiving tray must be at least equal to or greater than the drainage speed of the drainage holes. Therefore, the area of ​​the connecting holes is greater than the sum of the areas of the drainage holes. Preferably, the sum of the areas of all the connecting holes is greater than the sum of the areas of all the drainage holes by 20%. This ensures that the drainage speed of the water receiving tray is greater than the drainage speed of the water distribution trough, preventing the water in the water receiving tray from overflowing and allowing all or most of the water in the water receiving tray to flow back into the water distribution trough. For example, the sum of the areas of all connecting holes is A, and the sum of the areas of all drain holes is B, where A > B.

[0046] Meanwhile, in this embodiment, the water collection chamber is located directly below the packing material, and the opening area at the top of the water collection chamber is greater than or equal to the area of ​​the packing material above it. Furthermore, the water collection chamber faces the bottom of the packing material, so that almost all the water dripping from the packing material can be collected by the water collection chamber of the water receiving tray. At most, only a small portion of the water droplets will drip directly into the water collection tank. Compared to all the water droplets on the packing material dripping directly into the water collection tank, the noise will be lower.

[0047] In this embodiment, the distance between the water receiving tray and the bottom surface of the packing is 3cm-8cm, preferably 6cm. The bottom of the guide rod is inserted into the water collection trough, and the distance between the bottom of the guide rod and the bottom of the water collection trough is 1cm-3cm, preferably 2cm. Preferably, the distance between the bottom surface of the packing and the bottom surface of the water collection cavity is 6cm-8cm.

[0048] In this method, because the distance between the packing material and the water receiving tray is relatively short, the sound is relatively quiet when water drips from the packing material into the water receiving tray. The water depth in the collection tank will exceed 3cm (to facilitate the drainage pipe to remove the water from the collection tank, or to use a water pump to pump the water from the collection tank through the drainage pipe. Therefore, the collection tank will generally have a certain depth of water, but it will not be particularly deep). As a result, the bottom of the guide rod will be inserted into the water in the collection tank, thereby reducing the noise of water entering the collection tank.

[0049] To extend the service life of the water collection tray and reduce its corrosion, the surface of the water collection tray is coated with an anti-corrosion layer. Simultaneously, to reduce the cost of the guide rod and its replacement, the guide rod is made of plastic. Furthermore, the plastic material of the guide rod makes it less susceptible to water corrosion, extending its service life. Additionally, the plastic material provides a degree of elastic deformation. When a guide rod is damaged and needs replacement, due to the relatively small height between the water collection tray and the packing, the guide rod can be installed at an angle or bent from above the water collection tray into the drain hole. Moreover, because different cooling towers have different heights, or due to deviations in the installation position of the water collection tray by installers, or the water level in the collection tank, the initial length of the guide rod can be set longer. The plastic material also facilitates cutting the guide rod to suit different situations.

[0050] In this invention, the fan, packing, water distribution trough, and water collection trough are all existing structures. A water receiving tray is added to the existing structure; specifically, a water receiving tray and a guide rod are added to the tray below the packing on both the front and rear sides of the fan, thereby reducing noise. This method allows for the installation of the water receiving tray on existing, normally transported cooling towers without replacing them with new ones, thus reducing modification costs. It also avoids the need to move the cooling tower to the factory site for installation; on-site installation is possible and cost-effective.

[0051] Furthermore, the top of the water collection trough is close to the bottom of the packing material. This structure, unlike conventional structures without a drip tray, allows water dripping from the packing material to be collected in the trough. The trough also has a certain depth to store a certain amount of water, preventing overflow. Therefore, there is a height difference between the bottom of the trough and the bottom of the packing material. When water droplets fall into the trough, they generate significant noise (normally, the water level in the trough is relatively low, resulting in a noise similar to a heavy rain). Therefore, in this embodiment, the drip tray is located inside the trough, near the top of the trough, or its top is above the top surface of the trough, or its top surface is flush with the top surface of the trough, placing the drip tray close to the bottom of the packing material to reduce noise.

[0052] Furthermore, the water receiving tray can be secured to the left and right side walls of the water collection tank using bolts, self-tapping screws, welding, or other methods. Alternatively, brackets can be installed on the left and right side walls of the water collection tank, fixed to the tower body using welding, screws, or other methods. The top of the bracket has a support groove opening inwards; the two sides of the water receiving tray are simply inserted into the support grooves of the brackets on both sides, facilitating the installation and removal of the water receiving tray. When the guide rod needs to be replaced, the water receiving tray can be directly removed from the bracket, detaching it from the tower body, and the guide rod can be removed from the top of the water receiving tray before replacing it with a new one. This method facilitates cleaning of the water receiving tray, removing algae or impurities from the drain holes and preventing blockage that could affect normal drainage. Of course, other fixing methods are also possible.

[0053] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of the invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0054] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. For instance, the two components can be mechanically connected by contact or abutting; they can also be directly hooked or connected by an intermediate medium; or they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A noise reduction system for a central air conditioning cooling tower, comprising a tower body, a fan installed on the tower body, a water distribution trough, packing material, and a water collection trough, wherein the water distribution trough, packing material, and water collection trough are arranged at intervals from top to bottom, and the fan is disposed beside the packing material, characterized in that: A water receiving tray is also provided between the packing material and the bottom of the water collection tank, with the top of the water receiving tray located near the bottom of the packing material. The top of the water receiving tray has a water collection cavity facing the packing material, and the bottom of the water collection cavity is provided with a plurality of drainage holes communicating with the bottom surface of the water receiving tray. A guide rod is detachably installed in each of the drainage holes. There is a gap between the outer surface of the guide rod and at least part of the inner wall of the drainage hole. The bottom of the guide rod passes through the drainage hole and is located below the water receiving tray. The bottom of the guide rod is located close to the bottom of the water collection tank.

2. The noise reduction system for central air conditioning cooling towers according to claim 1, characterized in that: A limiting head is provided on the outer surface of the top of the guide rod, and the bottom outer edge of the limiting head abuts against the bottom surface of the water collection cavity next to the drain hole.

3. The noise reduction system for central air conditioning cooling towers according to claim 1, characterized in that: The drain hole includes a central hole and at least two connecting holes arranged around the outside of the central hole. The connecting holes communicate with the central hole. The bottom of the guide rod passes through the central hole and is located below the bottom surface of the water receiving tray.

4. The noise reduction system for a central air conditioning cooling tower according to claim 3, characterized in that: The top of the guide rod is provided with a tapered head that is larger at the top and smaller at the bottom. The outer diameter of the top of the tapered head is larger than the diameter of the intermediate hole. The outer surface of the tapered head abuts against the inner surface of the intermediate hole, or the bottom surface of the tapered head abuts against the bottom surface of the water collection cavity outside the intermediate hole.

5. The noise reduction system for a central air conditioning cooling tower according to claim 4, characterized in that: The bottom of the water distribution trough is provided with a plurality of drainage holes that communicate with the bottom surface of the water distribution trough, and the sum of the areas of all the connecting holes is greater than the sum of the areas of all the drainage holes.

6. The noise reduction system for a central air conditioning cooling tower according to claim 3, characterized in that: The connecting hole can be a strip hole, a square hole, a round hole, an elliptical hole, or a polygonal hole.

7. The noise reduction system for a central air conditioning cooling tower according to claim 3, characterized in that: There are three connection holes, which make the drainage holes form a three-petal flower-shaped structure.

8. The noise reduction system for a central air conditioning cooling tower according to claim 1, characterized in that: The distance between the water receiving tray and the bottom surface of the packing is 3cm-8cm, the bottom of the guide rod is inserted into the water collection tank, and the distance between the bottom of the guide rod and the bottom of the water collection tank is 1cm-3cm. And / or, the surface of the water receiving tray is coated with an anti-corrosion layer, and the guide rod is made of plastic.

9. The noise reduction system for a central air conditioning cooling tower according to claim 1, characterized in that: The fan is provided in at least two sets, and multiple sets of the fan are arranged laterally at intervals. The water distribution trough, packing and water receiving tray are provided on the tower body on the front and rear sides of the fan.

10. The noise reduction system for a central air conditioning cooling tower according to claim 1, characterized in that: The water receiving tray is located above the inside of the water collection tank, and the packing material, water distribution trough, and blower are located above the water collection tank.

Images