A full permanent-magnet open cooling tower

Abstract

The application discloses a full-permanent-magnetic open cooling tower, which comprises a tower body, an air outlet arranged at the top end of the tower body, an exhaust device, a first filler arranged at one side in the tower body, a second filler arranged at the other side in the tower body, a first spraying device, a second spraying device arranged in the tower body and used for spraying water towards the second filler, a first spiral pipe heat exchange device, a water inlet pipe through which cooling liquid flows, a water passing device, a second spiral pipe heat exchange device arranged in the tower body and located below the second filler, a water outlet pipe, a first water pumping device and a second water pumping device; the first spraying device is located above the first filler; the second spraying device is located above the second filler; the first spiral pipe heat exchange device is communicated with the water inlet pipe, and the second spiral pipe heat exchange device is communicated with the water outlet pipe. The application can improve the cooling and temperature reducing effect, can achieve the energy saving and consumption reducing effect, can reduce the failure occurrence probability and can reduce the maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of cooling towers, and more specifically to an all-permanent magnet open cooling tower. Background Technology

[0002] Traditional cooling towers typically consist of a tower body, an exhaust system mounted at the top, packing material inside the tower, and a spray system. During operation, water sprayed from the spray system flows downwards into the packing material, while dry, cool outside air flows upwards. The water and cool air exchange heat within the packing material, heating and humidifying the air to form hot, humid air, which is then discharged from the tower's outlet. However, the cooling effect of existing towers fails to meet the cooling requirements of certain fields, such as refrigeration equipment, thus limiting their applicability. Furthermore, the maintenance costs of existing towers are relatively high, increasing the burden on businesses. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a fully permanent magnet open cooling tower, which can improve the cooling effect, expand its application range, and reduce the probability of failure, thereby significantly reducing maintenance costs.

[0004] The objective of this invention is achieved through the following technical solution: An all-permanent magnet open cooling tower includes a tower body, an air outlet at the top of the tower body, an exhaust device, a first packing material disposed on one side of the tower body, a second packing material disposed on the other side of the tower body, a first spray device disposed within the tower body for spraying water toward the first packing material, a second spray device disposed within the tower body for spraying water toward the second packing material, a first spiral tube heat exchanger disposed within the tower body and below the first packing material, an inlet pipe for supplying cooling liquid, a water circulation device, a second spiral tube heat exchanger disposed within the tower body and below the second packing material, an outlet pipe, a first pumping device, and a second pumping device; the first spray device is located above the first packing material; the second spray device is located above the second packing material; one side of the tower body is provided with a spray nozzle facing the first spiral tube heat exchanger and the lower end of the first packing material. The tower body has a first air inlet and a second air inlet on the other side, facing the lower end of the second spiral tube heat exchanger and the second packing. The first spiral tube heat exchanger is connected to the water inlet pipe, and the second spiral tube heat exchanger is connected to the water outlet pipe. The water supply device is located between the first spiral tube heat exchanger and the second spiral tube heat exchanger and is used to transport cooling liquid from the first spiral tube heat exchanger to the second spiral tube heat exchanger. The tower body also has a water collection tank located below the first spiral tube heat exchanger and the second spiral tube heat exchanger. The first water pumping device is used to pump water from the water collection tank to the first spray device. The second water pumping device is used to pump water from the water collection tank to the second spray device. The exhaust device includes a fan rotatably mounted at the air outlet and a first permanent magnet synchronous motor for driving the fan to rotate.

[0005] The first spiral heat exchanger includes a first heat transfer spiral tube; the cavity of the first heat transfer spiral tube is through which cooling liquid flows; the upper end of the first heat transfer spiral tube is connected to a water inlet pipe, and the lower end of the first heat transfer spiral tube is connected to a water supply device.

[0006] The second spiral heat exchanger includes a second heat transfer spiral tube; the cavity of the second heat transfer spiral tube is through which cooling liquid flows; the upper end of the second heat transfer spiral tube is connected to a water supply device, and the lower end of the second heat transfer spiral tube is connected to a water outlet pipe.

[0007] A first water pump is installed on the water outlet pipe.

[0008] The first pumping device includes a first connecting pipe, a first circulating pump, and a second connecting pipe; one end of the first connecting pipe is connected to a water collection tank, and the other end is connected to the inlet of the first circulating pump; the outlet of the first circulating pump is connected to one end of the second connecting pipe, and the other end of the second connecting pipe is connected to the first spraying device.

[0009] The second pumping device includes a third connecting pipe, a second circulating pump, and a fourth connecting pipe; one end of the third connecting pipe is connected to a water collection tank, and the other end is connected to the inlet of the second circulating pump; the outlet of the second circulating pump is connected to one end of the fourth connecting pipe, and the other end of the fourth connecting pipe is connected to a second spraying device.

[0010] The second circulation pump starts 10-20 seconds later than the first circulation pump.

[0011] Both the first circulating pump and the second circulating pump include a pump body and a second permanent magnet synchronous motor for driving the impeller of the pump body to rotate.

[0012] The first spraying device includes a first water distribution basin located above the first filler and a plurality of first nozzles disposed at the bottom of the first water distribution basin.

[0013] The second spraying device includes a second water distribution basin located above the second filler and a plurality of second nozzles disposed at the bottom of the second water distribution basin.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides a fully permanent magnet open cooling tower, which combines a tower body, an exhaust device, a first packing material, a second packing material, a first spray device, a second spray device, a first spiral tube heat exchanger, a water inlet pipe, a water flow device, a second spiral tube heat exchanger, a water outlet pipe, a first pumping device, and a second pumping device. This allows the cooling liquid to undergo heat exchange as it flows through both the first and second spiral tube heat exchangers, forming a secondary heat exchange that significantly reduces the water temperature of the cooling liquid. This improves the cooling effect of the cooling tower and expands its application range. Furthermore, by using a fan for the exhaust device and a first permanent magnet synchronous motor to drive the fan, energy saving and consumption reduction are achieved, while also reducing the probability of malfunctions and significantly lowering maintenance costs. In addition, immersion cooling is achieved as the cooling liquid flows through the lower ends of the first and second heat exchange spiral tubes, further enhancing the cooling effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the first spiral tube heat exchanger. Figure 3 This is an exploded view of the first spiral tube heat exchanger. Figure 4 This is a schematic diagram of the second spiral tube heat exchanger. Figure 5 This is a schematic diagram showing the coordination between the first pumping device, the second pumping device, and the water collection tank; Figure 6 This is a schematic diagram showing the coordination of the first spiral tube heat exchanger, the second spiral tube heat exchanger, and the water circulation device. 10. Tower body; 11. Air outlet; 12. First air inlet; 13. Second air inlet; 14. Water collection tank; 15. Air duct; 20. Exhaust device; 21. Fan; 22. First permanent magnet synchronous motor; 31. First packing; 32. Second packing; 41. First spray device; 42. Second spray device; 43. First water distribution basin; 44. First nozzle; 45. Second water distribution basin; 46. Second nozzle; 50. First spiral tube heat exchange device; 51. First heat transfer spiral tube; 52. First heat exchange base; 53. First heat exchange tank; 54. First outlet; 55. First cover plate; 56. First limiting post; 57. 61. First spring; 62. Inlet pipe; 63. Water supply device; 64. Outlet pipe; 65. First water pump; 66. Second water pump; 67. Second water supply pipe; 70. Second spiral tube heat exchange device; 71. Second heat transfer spiral tube; 72. Second heat exchange seat; 75. Second cover plate; 76. Second limiting post; 77. Second spring; 80. First pumping device; 81. First connecting pipe; 82. First circulating pump; 83. Second connecting pipe; 84. First pressure regulating seat; 90. Second pumping device; 91. Third connecting pipe; 92. Second circulating pump; 93. Fourth connecting pipe; 94. Second pressure regulating seat. Detailed Implementation

[0016] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0017] like Figure 1-6As shown, a fully permanent magnet open cooling tower includes a tower body 10, an air outlet 11 at the top of the tower body 10, an exhaust device 20, a first packing 31 disposed on one side of the tower body 10, a second packing 32 disposed on the other side of the tower body 10, a first spray device 41 disposed within the tower body 10 for spraying water toward the first packing 31, a second spray device 42 disposed within the tower body 10 for spraying water toward the second packing 32, a first spiral tube heat exchange device 50 disposed within the tower body 10 and below the first packing 31, an inlet pipe 61 through which cooling liquid flows, a water circulation device 62, a second spiral tube heat exchange device 70 disposed within the tower body 10 and below the second packing 32, an outlet pipe 63, a first pumping device 80, and a second pumping device 90; the first spray device 41 is located above the first packing 31; the second spray device 42 is located above the second packing 32; one side of the tower body 10 is provided with a spray device facing the lower end of the first packing 31 and the first spiral tube heat exchange device. The tower body 10 has a first air inlet 12 and a second air inlet 13 on the other side, facing the lower end of the second packing 32 and the second spiral tube heat exchanger 70. The first spiral tube heat exchanger 50 is connected to the water inlet pipe 61, and the second spiral tube heat exchanger 70 is connected to the water outlet pipe 63. The water supply device 62 is located between the first spiral tube heat exchanger 50 and the second spiral tube heat exchanger 70, and is used to transport cooling liquid from the first spiral tube heat exchanger 50 to the second spiral tube heat exchanger 70. Device 70; the tower body 10 is also provided with a water collection tank 14 located below the first spiral tube heat exchange device 50 and the second spiral tube heat exchange device 70; the first water pumping device 80 is used to pump water from the water collection tank 14 to the first spray device 41; the second water pumping device 90 is used to pump water from the water collection tank 14 to the second spray device 42; the exhaust device 20 includes a fan 21 rotatably installed at the air outlet 11, and a first permanent magnet synchronous motor 22 for driving the fan 21 to rotate.

[0018] During operation, the first permanent magnet synchronous motor 22 of the exhaust device 20 drives the fan 21 to rotate. Cold air from the outside enters the tower body 10 through the first air inlet 12 and the second air inlet 13. The first water pumping device 80 operates, pumping water from the water collection tank 14 to the first spraying device 41, and spraying water into the first packing 31. The sprayed water flowing into the first packing 31 exchanges heat with the cold air flowing through it. After heat exchange, the sprayed water flows downwards along the first packing 31 towards the first spiral tube heat exchanger 50. At this time, the high-temperature cooling liquid flows into the first spiral tube heat exchanger 50 along the water inlet pipe 61. During the flow of the cooling liquid along the first spiral tube heat exchanger 50, it interacts with the air flowing through it. The spray water and cold air exchange heat in the first spiral tube heat exchanger 50. After flowing through the first spiral tube heat exchanger 50, the spray water continues to flow downwards and collects in the water collection tank 14. The cooled liquid after heat exchange continues to flow along the first spiral tube heat exchanger 50 to the water circulation device 62. During this process, the second pumping device 90 operates, pumping water from the water collection tank 14 to the second spray device 42, and spraying water into the second packing 32 through the second spray device 42. The spray water flowing into the second packing 32 exchanges heat with the cold air flowing through the second packing 32. The spray water flows downwards along the second packing 32 to the second spiral tube heat exchanger 70, and is then transported by the water circulation device 62 to the second spiral tube heat exchanger 70. The cooled liquid flowing through the second spiral tube heat exchanger 70 exchanges heat with the spray water flowing through the second spiral tube heat exchanger 70. The water and cold air undergo a second heat exchange. The sprayed water flows through the second spiral tube heat exchanger 70 and continues to flow downwards, collecting in the water collection tank 14. The cooling liquid after the second heat exchange continues to flow along the second spiral tube heat exchanger 70 to the outlet pipe 63 and flows out through the outlet pipe 63. The air after the heat exchange is formed into high-temperature and humid air and is discharged from the air outlet 11 under the action of the exhaust device 20. Then, the above-mentioned cycle is continuously repeated. Therefore, the fully permanent magnet open cooling tower 10 provided by the present invention adopts a tower body 10, an exhaust device 20, a first packing 31, a second packing 32, a first spray device 41, a second spray device 42, a first spiral tube heat exchanger 50, an inlet pipe 61, a water circulation device 62, and a second spiral tube heat exchanger. The combination of the device 70, the outlet pipe 63, the first pumping device 80, and the second pumping device 90 ensures that the cooling liquid undergoes heat exchange as it flows through the first spiral tube heat exchanger 50 and the second spiral tube heat exchanger 70. This secondary heat exchange significantly improves the cooling effect and expands the applicable range of the cooling tower. Furthermore, the spray water sprayed onto the first packing 31 and the second packing 32 by the first spray device 41 and the second spray device 42 first exchanges heat with the air flowing through the first packing 31 and the second packing 32, and then exchanges heat again with the air flowing through the tower body 10 when it flows to the first spiral tube heat exchanger 50 and the second spiral tube heat exchanger 70. This effectively reduces the temperature of the spray water after heat exchange, resulting in an even lower spray water temperature.Ensuring the exchange of spray water with the cooling liquid in the first spiral tube heat exchanger 50 and the second spiral tube heat exchanger 70 allows for the removal of more heat, further improving the cooling effect of the cooling tower. Furthermore, by using a fan 21 in the exhaust device 20 and a first permanent magnet synchronous motor 22 to drive the fan 21, transmission efficiency is improved, reducing energy waste. Simultaneously, since the fan 21 is directly driven by the first permanent magnet synchronous motor 22, malfunctions caused by abnormal transmission, loosening, or jamming in the intermediate transmission mechanism are avoided, significantly reducing the probability of failure and thus significantly lowering maintenance costs. Moreover, by directly driving the fan 21 with the first permanent magnet synchronous motor 22, which can constantly output a starting torque more than 2.2 times the rated load torque, the starting effect under heavy load is good, and the starting torque is large, thereby achieving high efficiency, energy saving, low noise, low-speed high torque, maintenance-free operation, large starting torque, and stable operation.

[0019] The first spiral heat exchanger 50 includes a first heat transfer spiral tube 51; the cavity of the first heat transfer spiral tube 51 is through which cooling liquid flows; the upper end of the first heat transfer spiral tube 51 is connected to the water inlet pipe 61, and the lower end of the first heat transfer spiral tube 51 is connected to the water supply device 62. In use, the cooling liquid flows into the upper end of the cavity of the first heat transfer spiral tube 51 through the water inlet pipe 61, and then flows along the first heat transfer spiral tube 51. The heat of the cooling liquid is first transferred to the inner wall of the first heat transfer spiral tube 51, and then from the inner wall of the first heat transfer spiral tube 51 to the outer wall of the first heat transfer spiral tube 51, and then from the outer wall of the first heat transfer spiral tube 51 to the spray water and cold air outside the first heat transfer spiral tube 51 for heat exchange. After heat exchange, the cooling liquid flows from the lower end of the first heat transfer spiral tube 51 to the water supply device 62.

[0020] The second spiral heat exchanger 70 includes a second heat transfer spiral tube 71; the cavity of the second heat transfer spiral tube 71 is through which cooling liquid flows; the upper end of the second heat transfer spiral tube 71 is connected to a water supply device 62, and the lower end of the second heat transfer spiral tube 71 is connected to a water outlet pipe 63. In use, the cooling liquid is transported to the upper end of the cavity of the second heat transfer spiral tube 71 via the water supply device 62, and then flows along the second heat transfer spiral tube 71. The heat of the cooling liquid is first transferred to the inner wall of the second heat transfer spiral tube 71, then from the inner wall to the outer wall, and then from the outer wall to the spray water and cold air outside the second heat transfer spiral tube 71 for heat exchange. After heat exchange, the cooling liquid flows from the lower end of the second heat transfer spiral tube 71 to the water outlet pipe 63.

[0021] A first water pump 64 is installed on the outlet pipe 63 to pump the cooling liquid. In this embodiment, the inlet pipe 61 is connected to the outlet of the refrigeration equipment, and the outlet pipe 63 is connected to the inlet of the refrigeration equipment. During use, the high-temperature cooling water (i.e., cooling liquid) discharged from the outlet of the refrigeration equipment can flow into the first heat transfer spiral tube 51 through the inlet pipe 61, and then flow to the second heat transfer spiral tube 71 through the water flow device 62. Finally, under the action of the first water pump 64, it flows back into the refrigeration equipment through the outlet pipe 63. The refrigeration equipment can be a refrigeration unit or other devices that perform a cooling function.

[0022] Of course, in addition to this, the water inlet pipe 61 and the water outlet pipe 63 can also be connected to other external equipment according to actual needs, so as to cool down the cooling liquid of other external equipment.

[0023] As a further preferred embodiment of the present invention, the first spiral tube heat exchange device 50 further includes a first heat exchange seat 52, in which a first heat exchange groove 53 is formed, and a first outlet 54 communicating with the first heat exchange groove 53 is provided at the bottom of the first heat exchange seat 52; the lower end of the first heat transfer spiral tube 51 is accommodated in the first heat exchange groove 53. In use, the spray water after heat exchange in the first packing 31 flows downward to the first heat exchange groove 53, exchanges heat with the cooling liquid in the first heat transfer spiral tube 51 through heat transfer, and flows into the water collection tank 14 through the first outlet 54.

[0024] The first spiral tube heat exchanger 50 also includes a first cover plate 55 that is vertically mounted below the first heat exchange seat 52 and used to close the first outlet 54, and a first reset device for causing the first cover plate 55 to move toward the first heat exchange seat 52. When the spray water flows downward through the first packing 31 into the first heat exchange tank 53, and the spray water volume in the first heat exchange tank 53 is low, the first cover plate 55 moves toward the first heat exchange seat 52 under the action of the first reset device and closes the first outlet 54. At this time, the spray water collects in the first heat exchange tank 53, and the lower end of the first heat transfer spiral tube 51 is immersed in the spray water in the first heat exchange tank 53, so that the cooling liquid flowing through the lower end of the first heat transfer spiral tube 51 forms immersion cooling, and the spray water can be used to cool the liquid flowing through the lower end of the first heat transfer spiral tube 51. The cooling liquid at the end is sufficiently cooled to further improve the cooling effect. When the gravity of the spray water in the first heat exchange tank 53 is sufficient to overcome the elastic force of the first reset device, the first cover plate 55 descends under the gravity of the spray water. At this time, the first outlet 54 is in an open state, and the spray water in the first heat exchange tank 53 can flow out through the first outlet 54 and flow towards the water collection tank 14. During the process of the spray water flowing downward to the water collection tank 14, it exchanges heat with the cold air flowing into the tower body 10 through the first air inlet 12, which can effectively reduce the temperature of the spray water after heat exchange, making the water temperature collected in the water collection tank 14 even lower. This ensures that the water that is recirculated can exchange with the cooling liquid in the first spiral tube heat exchange device 50 and the second spiral tube heat exchange device 70 to remove more heat, thereby further improving the cooling effect of the cooling liquid.

[0025] The bottom of the first heat exchange base 52 is provided with a plurality of downwardly extending first limiting posts 56. The first cover plate 55 is provided with a plurality of first through holes corresponding one-to-one with the plurality of first limiting posts 56 and allowing the corresponding first limiting posts 56 to pass through, so that the first cover plate 55 can be raised and lowered along the plurality of first limiting posts 56. By adopting the above structure, the installation of the first cover plate 55 can be facilitated. Specifically, the first cover plate 55 is also provided with a first sealing ring for sealingly engaging with the first heat exchange base 52.

[0026] The upper end of the first heat transfer spiral tube 51 is exposed outside the first heat exchange seat 52, so that when the cooling liquid flows through the upper end of the first heat transfer spiral tube 51, it can exchange heat with the spray water and cold air flowing through the outside of the first heat transfer spiral tube 51, thereby further improving the cooling effect.

[0027] The first reset device includes several first springs 57, each correspondingly fitted onto one of the several first limiting posts 56. The upper end of each first spring 57 abuts against the first cover plate 55, and the lower end of each first spring 57 abuts against the bottom of the first limiting post 56. By using several first springs 57 in the first reset device, the elastic force of these springs 57 can be used to move the first cover plate 55 toward the first heat exchange seat 52, thereby reducing costs.

[0028] Specifically, the first limiting post 56 includes a first main post and a first limiting ring disposed at the lower end of the first main post. The outer diameter of the first limiting ring is larger than the outer diameter of the first main post. The upper end of the first main post is connected to the first heat exchange base 52, and the lower end of the first spring 57 abuts against the first limiting ring of the first limiting post 56. By adopting the above structure, the manufacture of the first limiting post 56 can be facilitated.

[0029] As a further preferred embodiment of the present invention, the second spiral tube heat exchange device 70 further includes a second heat exchange seat 72, in which a second heat exchange groove is formed, and a second outlet communicating with the second heat exchange groove is provided at the bottom of the second heat exchange seat 72; the lower end of the second heat transfer spiral tube 71 is accommodated in the second heat exchange groove. In use, the spray water after heat exchange in the second packing 32 flows downward into the second heat exchange groove, exchanges heat with the cooling liquid in the second heat transfer spiral tube 71 through heat transfer, and flows into the water collection tank 14 through the second outlet.

[0030] The second spiral tube heat exchanger 70 also includes a second cover plate 75 that is vertically mounted below the second heat exchange seat 72 and used to close the second outlet, and a second reset device for causing the second cover plate 75 to move toward the second heat exchange seat 72. When the spray water flows downward through the second packing 32 into the second heat exchange tank, and the spray water volume in the second heat exchange tank is low, the second cover plate 75 moves toward the second heat exchange seat 72 under the action of the second reset device and closes the second outlet. At this time, the spray water collects in the second heat exchange tank, and the lower end of the second heat transfer spiral tube 71 is immersed in the spray water in the second heat exchange tank, so that the cooling liquid flowing through the lower end of the second heat transfer spiral tube 71 forms immersion cooling, and the spray water can be used to cool the liquid flowing through the lower end of the second heat transfer spiral tube 71. The cooling liquid is fully cooled to further improve the cooling effect. When the gravity of the spray water in the second heat exchange tank is sufficient to overcome the elastic force of the second reset device, the second cover plate 75 descends under the gravity of the spray water. At this time, the second outlet is open, and the spray water in the second heat exchange tank can flow out of the second outlet and flow towards the water collection tank 14. During the process of the spray water flowing downward to the water collection tank 14, it exchanges heat with the cold air flowing into the tower body 10 through the second air inlet 13, which can effectively reduce the temperature of the spray water after heat exchange, making the water temperature collected in the water collection tank 14 even lower. This ensures that the water that is recirculated can exchange with the second spiral tube heat exchange device 70 and the cooling liquid in the second spiral tube heat exchange device 70 to remove more heat, thereby further improving the cooling effect of the cooling liquid.

[0031] The bottom of the second heat exchange base 72 is provided with a plurality of downwardly extending second limiting posts 76. The second cover plate 75 is provided with a plurality of second through holes corresponding one-to-one with the plurality of second limiting posts 76, allowing the second cover plate 75 to rise and fall along the plurality of second limiting posts 76. This structure facilitates the installation of the second cover plate 75. Specifically, the second cover plate 75 is also provided with a second sealing ring for sealingly engaging with the second heat exchange base 72.

[0032] The upper end of the second heat transfer spiral tube 71 is exposed outside the second heat exchange seat 72, so that when the cooling liquid flows through the upper end of the second heat transfer spiral tube 71, it can exchange heat with the spray water and cold air flowing through the second heat transfer spiral tube 71, thereby further improving the cooling effect.

[0033] The second reset device includes several second springs 77, each correspondingly fitted onto one of the several second limiting posts 76. The upper end of each second spring 77 abuts against the second cover plate 75, and the lower end of each second spring 77 abuts against the bottom of the second limiting post 76. By using several second springs 77 in the second reset device, the elastic force of these springs 77 can be used to move the second cover plate 75 toward the second heat exchange seat 72, thereby reducing costs.

[0034] Specifically, the second limiting post 76 includes a second main post and a second limiting ring disposed at the lower end of the second main post. The outer diameter of the second limiting ring is larger than the outer diameter of the second main post. The upper end of the second main post is connected to the second heat exchange seat 72, and the lower end of the second spring 77 abuts against the second limiting ring of the second limiting post 76. By adopting the above structure, the manufacture of the second limiting post 76 can be facilitated.

[0035] The water supply device 62 includes a first water pipe 65, a second water pump 66, and a second water pipe 67. One end of the first water pipe 65 is connected to the lower end of the first heat transfer spiral tube 51, and the other end of the first water pipe 65 is connected to the inlet of the second water pump 66. The outlet of the second water pump 66 is connected to one end of the second water pipe 67, and the other end of the second water pipe 67 is connected to the upper end of the second heat transfer spiral tube 71. By adopting the above structure, the cooling liquid of the first heat transfer spiral tube 51 can be transported to the second heat transfer spiral tube 71 through the first water pipe 65, the second water pump 66, and the second water pipe 67 under the suction action of the second water pump 66.

[0036] The first spraying device 41 includes a first water distribution basin 43 located above the first filler 31 and a plurality of first nozzles 44 disposed at the bottom of the first water distribution basin 43. In use, water pumped to the first water distribution basin 43 by the first pumping device 80 is sprayed downwards through the plurality of first nozzles 44. In a preferred embodiment of the invention, the plurality of first nozzles 44 of the first spraying device 41 are evenly disposed at the bottom of the first water distribution basin 43 to ensure uniform water distribution in each area, thereby ensuring that the sprayed water is evenly sprayed onto the first filler 31.

[0037] The second spraying device 42 includes a second water distribution basin 45 located above the second packing material 32 and a plurality of second nozzles 46 disposed at the bottom of the second water distribution basin 45. In use, water pumped to the second water distribution basin 45 by the second pumping device 90 is sprayed downwards through the plurality of second nozzles 46. In a preferred embodiment of the invention, the plurality of second nozzles 46 of the second spraying device 42 are evenly disposed at the bottom of the second water distribution basin 45 to ensure uniform water spraying in each area, thereby ensuring that the sprayed water is evenly sprayed onto the second packing material 32.

[0038] The first water distribution basin 43 and the second water distribution basin 45 can both be gravity pool type water distribution basins, and the first nozzle 44 and the second nozzle 46 can both be multi-stage pressurized variable flow nozzles to ensure that water is not only evenly distributed on the first packing 31 and the second packing 32, but also achieves variable flow uniform water distribution, thereby improving the cooling effect of the cooling tower.

[0039] The first pumping device 80 includes a first connecting pipe 81, a first circulating pump 82, and a second connecting pipe 83. One end of the first connecting pipe 81 is connected to the water collection tank 14, and the other end is connected to the inlet of the first circulating pump 82. The outlet of the first circulating pump 82 is connected to one end of the second connecting pipe 83, and the other end of the second connecting pipe 83 is connected to the first spraying device 41. When the first circulating pump 82 is working, water in the water collection tank 14 can be pumped through the first connecting pipe 81, the first circulating pump 82, and the second connecting pipe 83 to the first spraying device 41, and then sprayed into the first packing 31 through the first spraying device 41. Specifically, a first valve is provided on the second connecting pipe 83.

[0040] As a further preferred embodiment of the present invention, a first pressure regulating seat 84 is provided at the other end of the second connecting pipe 83. The first pressure regulating seat 84 is connected to the first water distribution basin 43. The first pressure regulating seat 84 is provided with a first pressure regulating cavity. The cross-section of the first pressure regulating cavity is circular. From the end of the first pressure regulating cavity near the first circulating pump 82 to the end near the first water distribution basin 43, the cross-sectional area of ​​the first pressure regulating cavity gradually increases. When the water in the water collection tank 14 flows to the first pressure regulating seat 84 through the first connecting pipe 81, the first circulating pump 82, and the second connecting pipe 83, and flows along the first pressure regulating seat 84 to the first water distribution basin 43, the cross-sectional area of ​​the first pressure regulating cavity gradually increases from the end near the first circulating pump 82 to the end near the first water distribution basin 43. This gradually reduces the inlet pressure of the water flowing into the first water distribution basin 43, reduces energy consumption, and reduces damage to the first water distribution basin 43 caused by the impact of water on the first water distribution basin 43. This can effectively extend the service life of the first spray device 41.

[0041] The second pumping device 90 includes a third connecting pipe 91, a second circulating pump 92, and a fourth connecting pipe 93. One end of the third connecting pipe 91 is connected to the water collection tank 14, and the other end is connected to the inlet of the second circulating pump 92. The outlet of the second circulating pump 92 is connected to one end of the fourth connecting pipe 93, and the other end of the fourth connecting pipe 93 is connected to the second spraying device 42. When the second circulating pump 92 is working, water in the water collection tank 14 can be pumped through the third connecting pipe 91, the second circulating pump 92, and the fourth connecting pipe 93 to the second spraying device 42, and then sprayed into the second packing 32 through the second spraying device 42. Specifically, a second valve is provided on the second connecting pipe 83.

[0042] Specifically, as a further preferred embodiment of the present invention, a second pressure regulating seat 94 is provided at the other end of the fourth connecting pipe 93. The second pressure regulating seat 94 is connected to the second water distribution basin 45. The second pressure regulating seat 94 is provided with a second pressure regulating cavity. The cross-section of the second pressure regulating cavity is circular. From the end of the second pressure regulating cavity near the second circulating pump 92 to the end near the second water distribution basin 45, the cross-sectional area of ​​the second pressure regulating cavity gradually increases. When the water in the water collection tank 14 flows to the second pressure regulating seat 94 through the third connecting pipe 91, the second circulating pump 92, and the fourth connecting pipe 93, and flows along the second pressure regulating seat 94 to the second water distribution basin 45, the cross-sectional area of ​​the second pressure regulating cavity gradually increases from the end near the second circulating pump 92 to the end near the second water distribution basin 45. This gradually reduces the inlet pressure of the water flowing into the second water distribution basin 45, reduces energy consumption, and reduces damage to the second water distribution basin 45 caused by the impact of water on the water distribution basin. This can effectively extend the service life of the second spray device 42.

[0043] The start-up time of the second circulation pump 92 is 10-20 seconds later than the start-up time of the first circulation pump 82. By reasonably setting the start-up time of the second circulation pump 92 and the first circulation pump 82, the second spray device 42 can be sprayed according to the time when the cooling liquid flows from the first heat transfer spiral tube 51 to the second heat transfer spiral tube 71.

[0044] The first water pump 64, the second water pump 66, the first circulating pump 82, and the second circulating pump 92 all include a pump body and a second permanent magnet synchronous motor for driving the impeller of the pump body. By combining the pump body and the second permanent magnet synchronous motor into the first water pump 64, the second water pump 66, the first circulating pump 82, and the second circulating pump 92, when the entire cooling tower is under load, the first water pump 64, the second water pump 66, the first circulating pump 82, and the second circulating pump 92 can operate at low speed and low load, effectively extending their service life, further improving energy saving, and providing high efficiency and low noise.

[0045] The fan 21 is connected to the output shaft of the first permanent magnet synchronous motor 22. When the first permanent magnet synchronous motor 22 is working, it drives the fan 21 to rotate. The rotation of the fan 21 causes external air to be drawn into the tower body 10 from the first air inlet 12 and the second air inlet 13, and discharged from the air outlet 11. This structure facilitates installation and improves production and installation efficiency. Preferably, the fan 21 is a multi-blade fan integrally formed from aluminum alloy, and the multi-blade fan has at least five blades. Under the same demand for air volume and static pressure, compared with ordinary fans, this multi-blade fan can achieve the required air volume at a lower fan speed (21). Furthermore, according to the dynamic pressure of fan 21 = ρ_air × V² / 2, the lower the wind speed, the lower the dynamic pressure of fan 21; under the same total pressure, the lower the dynamic pressure, the higher the static pressure. Therefore, using this multi-blade fan can achieve higher static pressure. Moreover, as the wind speed of fan 21 decreases, the resistance of tower 10 decreases with the wind speed, but the total pressure attenuation trend of this multi-blade fan is more gradual, still able to overcome the resistance of tower 10. This greatly reduces the occurrence of pressure loss during low-wind-speed operation. In addition, the smaller the spacing between the blades of the multi-blade fan, the better the anti-backflow effect. Therefore, by combining the first permanent magnet synchronous motor 22 with a multi-blade fan, the required air volume and higher total pressure can be obtained at a lower speed with the same power consumption, further achieving energy-saving effects and improving the overall heat exchange efficiency of the tower.

[0046] The top of the tower body 10 has a duct 15, and the air outlet 11 is formed on the duct 15. Specifically, the duct 15 is formed by double-sided smooth pultrusion of fiberglass to ensure dimensional stability, and has good corrosion resistance, light weight, short production cycle, and simple installation, thereby further improving production and installation efficiency.

[0047] The lower end of the tower body 10 has a base plate, and the water collection tank 14 is formed on the base plate, thereby facilitating the formation of the water collection tank 14.

[0048] The tower body 10 includes a bottom frame, a top frame above the bottom frame, and a central frame between the bottom frame and the top frame. The bottom frame, central frame, and top frame are all made of heavy-duty galvanized steel sheet to save processing steps and improve the manufacturing efficiency of the tower body 10. In this embodiment, the bottom frame has lower side plates on all four sides to form an integral frame structure with an enclosed perimeter. The central frame has several columns connected by horizontal and vertical beams and diagonal beams, forming a column frame structure with an irregular cross-section to increase column strength. The top frame uses a staggered horizontal and vertical frame beam design to effectively support the weight of the exhaust device 20. Except for the section of the duct 15, the remaining areas are enclosed with heavy-duty galvanized steel sheet, effectively allowing the fan 21 to exhaust the humid and hot air after heat exchange from the air outlet 11.

[0049] A water collector is installed at the air outlet 11 to collect some of the water droplets from the hot and humid air, thereby reducing the loss of spray water.

[0050] Both the first packing material 31 and the second packing material 32 are made of PVC raw material and molded under ultra-low temperature cooling to ensure that the first packing material 31 and the second packing material 32 will not deform during use and affect the heat dissipation effect of the tower body 10. As a further preferred embodiment of the present invention, the first packing material 31 and the second packing material 32 can also integrate the functions of air guiding, heat dissipation and water collection, with low airflow resistance and low static pressure loss. The surface of the first packing material 31 and the second packing material 32 has a fine cloth texture, which allows more water to form a thin film without splashing, allowing for more complete contact between water and air, longer water heat exchange time, and good hydrophilicity.

[0051] Of course, in addition to this, the first filler 31 and the second filler 32 can be any existing filler on the market, as long as they can allow for heat exchange between the spray water and the airflow. However, the optimal embodiment of the present invention is to use PVC raw material for the first filler 31 and the second filler 32 and to mold them by ultra-low temperature cooling, which can improve the structural strength and prevent deformation.

[0052] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A fully permanent magnet open cooling tower, characterized in that: The system includes a tower body, an air outlet at the top of the tower body, an exhaust device, a first packing material located on one side of the tower body, a second packing material located on the other side of the tower body, a first spray device located inside the tower body for spraying water toward the first packing material, a second spray device located inside the tower body for spraying water toward the second packing material, a first spiral tube heat exchanger located inside the tower body and below the first packing material, an inlet pipe for supplying cooling liquid, a water circulation device, a second spiral tube heat exchanger located inside the tower body and below the second packing material, an outlet pipe, a first pumping device, and a second pumping device; the first spray device is located above the first packing material; the second spray device is located above the second packing material; a first air inlet is provided on one side of the tower body, facing the first spiral tube heat exchanger and the lower end of the first packing material. Furthermore, a second air inlet is provided on the other side of the tower body, facing the lower end of the second spiral tube heat exchanger and the second packing. The first spiral tube heat exchanger is connected to the water inlet pipe, and the second spiral tube heat exchanger is connected to the water outlet pipe. The water supply device is provided between the first spiral tube heat exchanger and the second spiral tube heat exchanger, and is used to transport cooling liquid from the first spiral tube heat exchanger to the second spiral tube heat exchanger. The tower body is also provided with a water collection tank located below the first spiral tube heat exchanger and the second spiral tube heat exchanger. The first water pumping device is used to pump water from the water collection tank to the first spray device. The second water pumping device is used to pump water from the water collection tank to the second spray device. The exhaust device includes a fan rotatably installed at the air outlet and a first permanent magnet synchronous motor for driving the fan to rotate. The first pumping device includes a first connecting pipe, a first circulating pump, and a second connecting pipe; one end of the first connecting pipe is connected to a water collection tank, and the other end is connected to the inlet of the first circulating pump; the outlet of the first circulating pump is connected to one end of the second connecting pipe, and the other end of the second connecting pipe is connected to the first spraying device. The second pumping device includes a third connecting pipe, a second circulating pump, and a fourth connecting pipe; one end of the third connecting pipe is connected to a water collection tank, and the other end is connected to the inlet of the second circulating pump; the outlet of the second circulating pump is connected to one end of the fourth connecting pipe, and the other end of the fourth connecting pipe is connected to a second spraying device. The second circulation pump starts 10-20 seconds later than the first circulation pump. Both the first circulating pump and the second circulating pump include a pump body and a second permanent magnet synchronous motor for driving the impeller of the pump body to rotate; The first spiral tube heat exchanger includes a first heat exchange base; the first spiral tube heat exchanger also includes a first cover plate that is vertically mounted below the first heat exchange base and used to close the first outlet, and a first reset device for causing the first cover plate to move toward the first heat exchange base. When the spray water flows downward through the first packing into the first heat exchange tank, when the spray water volume in the first heat exchange tank is low, the first cover plate moves toward the first heat exchange base under the action of the first reset device and closes the first outlet. At this time, the spray water gathers in the first heat exchange tank, and the lower end of the first heat transfer spiral tube is immersed in the spray water in the first heat exchange tank, so that the cooling liquid flowing through the lower end of the first heat transfer spiral tube forms immersion cooling. The bottom of the first heat exchange seat is provided with a plurality of downwardly extending first limiting posts; the first reset device includes a plurality of first springs respectively fitted onto the plurality of first limiting posts, the upper end of each first spring abutting against the first cover plate, and the lower end of the first spring abutting against the bottom of the first limiting post.

2. The all-permanent magnet open cooling tower as described in claim 1, characterized in that: The first spiral heat exchanger includes a first heat transfer spiral tube; the cavity of the first heat transfer spiral tube is through which cooling liquid flows; the upper end of the first heat transfer spiral tube is connected to a water inlet pipe, and the lower end of the first heat transfer spiral tube is connected to a water supply device.

3. The all-permanent magnet open cooling tower as described in claim 1, characterized in that: The second spiral heat exchanger includes a second heat transfer spiral tube; the cavity of the second heat transfer spiral tube is through which cooling liquid flows; the upper end of the second heat transfer spiral tube is connected to a water supply device, and the lower end of the second heat transfer spiral tube is connected to a water outlet pipe.

4. The all-permanent magnet open cooling tower as described in claim 1, characterized in that: A first water pump is installed on the water outlet pipe.

5. The all-permanent magnet open cooling tower as described in claim 1, characterized in that: The first spraying device includes a first water distribution basin located above the first filler and a plurality of first nozzles disposed at the bottom of the first water distribution basin.

6. The all-permanent magnet open cooling tower as described in claim 1, characterized in that: The second spraying device includes a second water distribution basin located above the second filler and a plurality of second nozzles disposed at the bottom of the second water distribution basin.

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