Cooling tower and air conditioning system

Abstract

The utility model relates to a cooling tower and an air conditioning system, and the cooling tower comprises a tower body which is sequentially provided with a first area, a second area and a third area from top to bottom; the first-stage cooling assembly is arranged in the first area and comprises a first spraying structure, a first heat exchange structure and a first-stage water receiving disc, the top of the first spraying structure is used for receiving cooling water, the sprayed cooling water and the first heat exchange structure are subjected to first-stage cooling, and the first-stage water receiving disc is used for receiving the cooling water subjected to first-stage cooling; the second-stage cooling assembly is arranged in the third area and comprises a second spraying structure, a second heat exchange structure and a second-stage water receiving disc, the second spraying structure is arranged at the bottom of the first-stage water receiving disc and used for spraying out cooling water in the first-stage water receiving disc to conduct second-stage cooling with the second heat exchange structure, and the second-stage water receiving disc is used for receiving cooling water obtained after second-stage cooling; the tower body is provided with a first-stage air inlet above the first-stage water pan in the second area, and is provided with a second-stage air inlet above the second-stage water pan in the third area.

Description

Technical Field

[0001] The present disclosure relates to the technical field of refrigeration system cooling, and in particular to a cooling tower and an air conditioning system. Background Art

[0002] Cooling towers are commonly used equipment in the industrial field. In the refrigeration and air-conditioning industry, the high-temperature cooling water from the condenser flows into the cooling tower and comes into direct contact with the ambient air, transferring heat to the air. The contact between water and air is used to reduce the temperature of the high-temperature cooling water through evaporation.

[0003] However, during the actual use of cooling towers, the high-temperature cooling water and the ambient air do not fully exchange heat, resulting in low performance of the cooling tower. Utility Model Content

[0004] The present disclosure provides a cooling tower and an air conditioning system, which can improve the cooling performance of the cooling tower.

[0005] A first aspect of the present disclosure provides a cooling tower, comprising:

[0006] A tower body, wherein a first area, a second area and a third area are sequentially arranged in the tower body from top to bottom in the height direction;

[0007] A primary cooling assembly, comprising a first spray structure, a first heat exchange structure and a primary water receiving pan, wherein the first spray structure and the first heat exchange structure are arranged in the first region, the top of the first spray structure is used to receive cooling water entering through the water inlet pipe, the sprayed cooling water exchanges heat with the first heat exchange structure to achieve first-stage cooling, and the primary water receiving pan is arranged in the second region to receive cooling water after the first-stage cooling; and

[0008] The secondary cooling assembly is arranged in the third area and includes a second spray structure, a second heat exchange structure and a secondary water receiving pan. The second spray structure is arranged at the bottom of the primary water receiving pan and is used to spray the cooling water in the primary water receiving pan and exchange heat with the second heat exchange structure to achieve secondary cooling. The secondary water receiving pan is arranged in the third area and at the bottom of the secondary cooling assembly and is used to receive the cooling water after the second stage cooling.

[0009] The tower body is provided with a primary air inlet in the second area above the primary water receiving tray, and the tower body is provided with a secondary air inlet in the third area above the secondary water receiving tray.

[0010] In some embodiments, the first heat exchange structure includes a first heat exchange filler, in which a through hole extending in a height direction is provided, and the first spray structure includes a spray pipe and a plurality of first nozzles, the spray pipe is arranged in the through hole and can rotate around its own axis, the top of the spray pipe is used to receive cooling water entering through the water inlet pipe, and the plurality of first nozzles are arranged on the outer wall of the spray pipe.

[0011] In some embodiments, the plurality of first nozzles are spaced apart in the height direction.

[0012] In some embodiments, a plurality of first spray heads are spirally and equidistantly arranged on the side wall of the spray pipe along the height direction.

[0013] In some embodiments, the cooling tower further comprises an air duct, which is arranged at a central position in the second region along the height direction, wherein the top end of the air duct abuts against the first heat exchange filler, and the bottom end of the air duct is connected to the third region;

[0014] A plurality of through holes are arranged in the first heat exchange filler, and all of them are located in the peripheral area of ​​the air duct. A plurality of first spray structures are arranged, and the plurality of first spray structures are arranged in one-to-one correspondence with the plurality of through holes.

[0015] In some embodiments, a second heat exchange filler is accommodated in the second heat exchange structure.

[0016] In some embodiments, the second spray structure includes a plurality of second spray heads, and the plurality of second spray heads are arranged at intervals at the bottom of the primary water receiving tray.

[0017] In some embodiments, the first heat exchange structure and the second heat exchange structure are arranged opposite to each other in the height direction.

[0018] In some embodiments, the cooling tower also includes an indirect cooling component, which is arranged in the third area. The indirect cooling component includes a third heat exchange structure and a pump. The third heat exchange structure is located on the periphery of the second heat exchange structure and above the secondary water receiving pan. The pump is used to spray the cooling water in the secondary water receiving pan to the third heat exchange structure through a third nozzle arranged on the top of the third heat exchange structure, and the cooling water re-enters the secondary water receiving pan after heat exchange.

[0019] In some embodiments, the secondary air inlet is arranged in a region directly opposite to the third heat exchange structure.

[0020] In some embodiments, two indirect cooling components are provided and are symmetrically arranged relative to the second heat exchange structure, and each indirect cooling component is correspondingly provided with a secondary air inlet.

[0021] In some embodiments, the third heat exchange structure includes a vertical tube heat exchanger configured to utilize cooling water in the secondary water receiving pan to exchange heat with air entering from the secondary air inlet.

[0022] In some embodiments, the cross-sectional area of ​​the tower body in the first region is smaller than that in the third region, and the side wall of the tower body is inclined outward from top to bottom in the second region, and the side wall is connected to the region near the outside of the second heat exchange structure at the bottom of the second region.

[0023] In some embodiments, a fan is provided on the top of the tower body and is configured to draw the space outward from the first area.

[0024] In some embodiments, the cooling tower further includes a dehydration plate disposed in the first region and located between the fan and the primary cooling assembly in the height direction.

[0025] A second aspect of the present disclosure provides an air conditioning system, comprising:

[0026] Condenser; and

[0027] The cooling tower in the above embodiment is used to cool the cooling water passing through the condenser.

[0028] The cooling tower of the disclosed embodiment forms a multi-stage cooling tower by providing a primary cooling component and a secondary cooling component. After the high-temperature cooling water introduced is cooled by the ambient air for the first stage, the cooling water after the primary cooling is then cooled for the second stage, thereby extending the heat exchange time and the heat exchange flow path of the cooling water, allowing the cooling water to more fully contact and exchange heat with the ambient air, thereby making the heat exchange of the cooling water more complete, thereby improving the cooling efficiency and performance of the cooling tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 sectional views of some embodiments of the cooling tower of the present disclosure.

[0031] Figure 2 It is a schematic diagram of the layout of multiple first spray structures arranged in the cooling tower of the present invention.

[0032] Figure 3 It is a schematic structural diagram of a single first spray structure in the cooling tower disclosed in the present invention.

[0033] Figure 4 A schematic diagram of the structure in which a second nozzle is arranged at the bottom of a primary water collecting tray in a cooling tower disclosed in the present invention.

[0034] Description of Reference Numerals

[0035] 1. Tower body; 11. Primary air inlet; 12. Secondary air inlet; 2. Fan; 3. Dehydration plate; 4. Water inlet pipe; 5. Regulating valve; 6. First spray structure; 61. Spray pipe; 62. First nozzle; 7. First heat exchange structure; 71. Through hole; 8. Primary water receiving tray; 9. Air duct; 10. Secondary spray structure; 13. Secondary heat exchange structure; 14. Third heat exchange structure; 15. Secondary water receiving tray; 16. Third nozzle; 17. Pump; 18. Water outlet pipe; A. First area; B. Second area; C. Third area. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without carrying out creative work are within the scope of protection of the present disclosure.

[0037] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0038] In the description of the present disclosure, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present disclosure.

[0039] In the description of the present disclosure, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0040] like Figures 1 to 4 The present disclosure provides a cooling tower, which in some embodiments includes:

[0041] A tower body 1, wherein a first area A, a second area B and a third area C are sequentially arranged in the tower body 1 from top to bottom in the height direction;

[0042] A primary cooling assembly, comprising a first spray structure 6, a first heat exchange structure 7 and a primary water receiving tray 8, wherein the first spray structure 6 and the first heat exchange structure 7 are arranged in the first area A, the top of the first spray structure 6 is used to receive cooling water entering through the water inlet pipe 4, the sprayed cooling water exchanges heat with the first heat exchange structure 7 to achieve the first stage cooling, and the primary water receiving tray 8 is arranged in the second area B to receive the cooling water after the first stage cooling; and

[0043] The secondary cooling assembly is arranged in the third area C and includes a second spray structure 10, a second heat exchange structure 13 and a secondary water receiving pan 15. The second spray structure 10 is arranged at the bottom of the primary water receiving pan 8 and is used to spray the cooling water in the primary water receiving pan 8 to exchange heat with the second heat exchange structure 13 to achieve secondary cooling. The secondary water receiving pan 15 is arranged in the third area C and at the bottom of the secondary cooling assembly and is used to receive the cooling water after the second stage cooling.

[0044] The tower body 1 is provided with a primary air inlet 11 above the primary water receiving tray 8 in the second area B, and a secondary air inlet 12 is provided above the secondary water receiving tray 15 in the third area C.

[0045] Specifically, both the primary cooling assembly and the secondary cooling assembly are direct cooling units, that is, the cooling water is cooled by the ambient air, and the cooling water is used to pass into the condenser in the air conditioning system to take away the heat of the gaseous refrigerant. After the heat exchange, the high-temperature cooling water enters the cooling tower through the water inlet pipe 4 for cooling, and the cooling water comes from the outlet of the condenser. The air entering from the primary air inlet 11 exchanges heat with the cooling water in the primary cooling assembly, and the air entering from the secondary air inlet 12 exchanges heat with the cooling water in the secondary cooling assembly.

[0046] In the primary cooling assembly, the cooling water introduced by the water inlet pipe 4 reaches the top of the first spray structure 6, and the sprayed cooling water exchanges heat with the air entering from the primary air inlet 11 in the first heat exchange structure 7 to achieve the first stage cooling. The primary water receiving pan 8 is arranged in the second area B and below the first heat exchange structure 7 to receive the cooling water after the first stage cooling. Preferably, the water receiving area of ​​the primary water receiving pan 8 at least covers the cross-sectional area of ​​the first heat exchange structure to increase the cooling water processing capacity of the cooling tower. Optionally, a regulating valve 5 is provided on the water inlet pipe 4 to adjust the flow rate of the cooling water introduced.

[0047] In the secondary cooling assembly, the cooling water in the primary water receiving pan 8 is sprayed out and flows into the second heat exchange structure 13 under the action of gravity, and realizes the second stage cooling through heat exchange with the air entering from the secondary air inlet 12. The secondary water receiving pan 15 is arranged in the third area C and at the bottom of the secondary cooling assembly, and is used to receive the cooling water after the second stage cooling.

[0048] This embodiment forms a multi-stage cooling tower by providing a primary cooling component and a secondary cooling component. After the high-temperature cooling water introduced is cooled by the ambient air for the first stage, the cooling water after the primary cooling is then cooled for the second stage, thereby extending the heat exchange time and the heat exchange flow path of the cooling water, allowing the cooling water to more fully contact and exchange heat with the ambient air, thereby making the heat exchange of the cooling water more complete, thereby improving the cooling efficiency and performance of the cooling tower.

[0049] Moreover, the tower body is provided with air inlets for two-stage cooling respectively. Both stages of cooling involve heat exchange between cooling water and ambient air. There is no need to set up other heat exchangers that require the use of refrigerants, which can make full use of natural resources and reduce the energy consumption of the cooling tower.

[0050] In some embodiments, Figure 2 and Figure 3 As shown, the first heat exchange structure 7 includes a first heat exchange filler, in which a through hole 71 extending along the height direction is provided. The first spray structure 6 includes a spray pipe 61 and a plurality of first nozzles 62. The spray pipe 61 is arranged in the through hole 71 and can rotate around its own axis. The top of the spray pipe 61 is used to receive the cooling water entering through the water inlet pipe 4, and the plurality of first nozzles 62 are arranged on the outer wall of the spray pipe 61.

[0051] Among them, the spray pipe 61 extends in the height direction and can be set at the center position of the through hole 71. Multiple first nozzles 62 are used to spray the cooling water in the spray pipe 61 into the through hole 71 and flow evenly into the surrounding first heat exchange filler to fully exchange heat with the ambient air entering from the first-level air inlet 11.

[0052] In this embodiment, the spray pipe 61 is arranged to be rotatable along 360°, so that cooling water is sprayed out from various angles as the spray pipe 61 rotates, and the outer periphery of the spray pipe 61 is completely surrounded by the first heat exchange filler, so that the cooling water can be fully in contact with the first heat exchange filler, increasing the contact area, making the first stage cooling more sufficient, and improving the cooling efficiency.

[0053] In some embodiments, the plurality of first nozzles 62 are arranged at intervals along the height direction. Optionally, the plurality of first nozzles 62 may cover the entire height of the spray pipe 61. For example, the plurality of first nozzles 62 are arranged at even intervals along the height direction.

[0054] This embodiment enables the plurality of first nozzles 62 to spray cooling water more evenly over the entire height of the spray pipe 61, so that the cooling water is evenly distributed in the height direction, thereby improving cooling uniformity and cooling efficiency.

[0055] In some embodiments, Figure 3As shown, a plurality of first nozzles 62 are arranged equidistantly in a spiral along the height direction on the side wall of the spray pipe 61. Specifically, assuming that there is one or more spiral lines on the outer wall of the spray pipe 61, a plurality of first nozzles 62 are sequentially arranged on the extension track of the spiral lines.

[0056] This embodiment can further stagger the height positions of the plurality of first nozzles 62 on the spray pipe 61 so as to spray cooling water more evenly over the entire height of the spray pipe 61, so that the cooling water is evenly distributed in the height direction, thereby improving cooling uniformity and cooling efficiency.

[0057] In some embodiments, Figure 1 As shown, the cooling tower further includes an air duct 9, which is arranged at the center of the second area B along the height direction, the top of the air duct 9 abuts against the first heat exchange filler, and the bottom of the air duct 9 is connected to the third area C. A plurality of through holes 71 are arranged in the first heat exchange filler, and are all located in the peripheral area of ​​the air duct 9, and a plurality of first spray structures 6 are arranged, and the plurality of first spray structures 6 correspond to the plurality of through holes 71 one by one.

[0058] The air duct 9 can be arranged at the center of the first-level water receiving tray 8, so that the area between the air duct 9 and the first-level water receiving tray 8 is used for receiving water. Figure 2 As shown, multiple through holes 71 are arranged on the same pitch circle, or on at least two concentric pitch circles, and the central area of ​​the first heat exchange structure 7 is not provided with a through hole 71 filled with the first heat exchange filler, so that the top end of the air duct 9 abuts against the first heat exchange filler, and the top end is not connected to the through hole 71.

[0059] The side wall of the air duct 9 located above the highest allowable liquid level in the first-level water receiving tray 8 may be provided with holes to allow the air in the second area B to enter the air duct 9. For example, the air duct 9 may extend in the height direction. After the ambient air enters from the first-level air inlet 11, a part of it enters the first heat exchange filler through the end of the first heat exchange structure 7, and the other part enters the air duct 9 through the holes in the side wall of the air duct 9 and enters the first heat exchange filler. The air exchanges heat with the cooling water sprayed into the first heat exchange filler through the first nozzle 62 to achieve first-level cooling. The cooling water after heat exchange falls into the first-level water receiving tray 8, and the hot air flows upward.

[0060] A small amount of water droplets in the first heat exchange structure 7 can enter the second heat exchange structure 13 through the air duct 9 and finally flow into the secondary water receiving tray 15 together.

[0061] Specifically, the water inlet pipe 4 includes a common section and multiple branch sections. The multiple branch sections are all connected to the common section. The multiple branch sections provide condensed water to the multiple spray pipes 61 in a one-to-one correspondence. A regulating valve 5 can be set on each branch section.

[0062] By setting up the air duct 9, this embodiment allows the ambient air after secondary cooling of the cooling water to enter the air duct 9 from the bottom of the third area C, and also allows the ambient air in the second area B to enter the air duct 9 from the side wall, thereby guiding the air to flow from bottom to top. The heat of the cooling water is assisted to be carried away upward with the flow of air, thereby making full use of natural resources for cooling.

[0063] In some embodiments, Figure 1 As shown, a second heat exchange filler is accommodated in the second heat exchange structure 13. The second heat exchange filler may be the same as or different from the first heat exchange filler.

[0064] This embodiment arranges a second heat exchange filler in the second heat exchange structure 13 to guide and cool the cooling water, increase the residence time of the cooling water and the air, prolong the air stagnation of the water body, increase the heat exchange time, and thus improve the secondary cooling efficiency.

[0065] In some embodiments, Figure 1 and Figure 4 As shown, the second spray structure 10 includes a plurality of second spray heads, and the plurality of second spray heads are arranged at intervals at the bottom of the primary water receiving tray 8 .

[0066] This embodiment arranges a plurality of second nozzles at intervals at the bottom of the first-stage water receiving tray 8, so that the cooling water in the first-stage water receiving tray 8 can enter the second heat exchange structure 13 for heat exchange more evenly by gravity, thereby improving the uniformity of the secondary cooling.

[0067] In some embodiments, the first heat exchange structure 7 and the second heat exchange structure 13 are arranged opposite to each other in the height direction.

[0068] This embodiment can make the structural arrangement in the multi-stage cooling tower more compact. During the cooling process, the cooling water can rely on the gravity to directly fall into the first-stage water receiving tray 8 after the first-stage cooling, and the cooling water in the first-stage water receiving tray 8 can be directly sprayed into the second heat exchange structure 13, and directly fall into the second-stage water receiving tray 15 after the second-stage cooling, without setting up additional structures to assist in guiding the flow of cooling water.

[0069] In some embodiments, Figure 1 As shown, the cooling tower also includes an indirect cooling component, which is arranged in the third area C. The indirect cooling component includes a third heat exchange structure 14 and a pump 17. The third heat exchange structure 14 is located on the periphery of the second heat exchange structure 13 and above the secondary water receiving tray 15. The pump 17 is used to spray the cooling water in the secondary water receiving tray 15 to the third heat exchange structure 14 through a third nozzle 16 arranged on the top of the third heat exchange structure 14, and the cooling water re-enters the secondary water receiving tray 15 after heat exchange.

[0070] The indirect cooling component is arranged at the periphery of the second heat exchange structure 13, and the water receiving area of ​​the secondary water receiving tray 15 can simultaneously cover the second heat exchange structure 13 and the third heat exchange structure 14. Since the temperature of the cooling water after the secondary cooling is relatively low, the indirect cooling component is configured to pre-cool the air entering the tower body 1 from the secondary air inlet 12 using the cooling water after the secondary cooling.

[0071] This embodiment provides an indirect cooling component. After the ambient air enters the tower body 1 from the secondary air inlet 12, the cooling water after secondary cooling is first used for precooling, which can better perform secondary cooling on the cooling water and effectively reduce the cooling water temperature.

[0072] In some embodiments, the secondary air inlet 12 is disposed in an area directly opposite to the third heat exchange structure 14. Thus, after the ambient air enters the third area C from the secondary air inlet 12, it can be directly pre-cooled, thereby reducing the overall gas temperature in the third area C.

[0073] In some embodiments, two indirect cooling components are provided and are symmetrically arranged relative to the second heat exchange structure 13, and each indirect cooling component is correspondingly provided with a secondary air inlet 12. For example, the tower body 1 in the third region C may be in a square or circular cylindrical shape.

[0074] This embodiment symmetrically arranges two indirect cooling components on both sides of the second heat exchange structure 13 to precool the air entering the corresponding secondary air inlet 12 respectively, so that the air in the entire circumference of the tower body 1 entering the third area C can be precooled.

[0075] In some embodiments, the third heat exchange structure 14 includes a vertical tube heat exchanger, which is configured to use the cooling water in the secondary water receiving tray 15 to exchange heat with the air and cooling water entering from the secondary air inlet 12. For example, the secondary air inlet 12 can be arranged on the side wall of the tower body 1 corresponding to the third area C, and a plurality of heat exchange channels are arranged in the vertical tube heat exchanger, and a third nozzle 16 is arranged on the top of each heat exchange channel. The cooling water drawn from the secondary water receiving tray 15 by the pump 17 can be sprayed into the heat exchange channel through the third nozzle 16 so as to exchange heat with the air entering from the secondary air inlet 12, and the cooling water after heat exchange returns to the secondary water receiving tray 15.

[0076] Optionally, the third heat exchange structure 14 may also be a wind-water heat exchanger.

[0077] This embodiment is provided with a vertical tube heat exchanger, which can make the vertically flowing cooling water and the horizontally flowing air fully contact and exchange heat, and can improve the pre-cooling effect of the air introduced into the secondary air inlet 12.

[0078] In some embodiments, the cross-sectional area of ​​the tower body 1 in the first region A is smaller than the cross-sectional area of ​​the third region C, and the side wall of the tower body 1 is inclined outward from top to bottom in the second region B, and the side wall is connected to the area near the outside of the second heat exchange structure 13 at the bottom of the second region B.

[0079] Since the second heat exchange structure 13 and the third heat exchange structure 14 are disposed in the third region C, a larger cross-sectional area is provided.

[0080] The tower body 1 structure of this embodiment can fully consider the positional relationship of each heat exchange structure and make the overall structure more compact. Moreover, the side wall of the tower body 1 is inclined outward in the second area B, which can increase the capacity of the first-level water receiving tray 8. The side wall of the tower body 1 is connected to the area close to the outside of the second heat exchange structure 13 at the bottom of the second area B. When multiple second nozzles are arranged at the bottom of the first-level water receiving tray 8, the cooling water can be sprayed to cover the entire second heat exchange structure 13, and the first-level cooling water can be minimized from directly entering the third heat exchange structure 14. Instead, the ambient air is pre-cooled by using the second-level cooling water with a lower temperature, thereby improving the pre-cooling effect.

[0081] In some embodiments, a fan 2 is disposed on the top of the tower body 1 and is configured to draw air from the first area A to the outside. The fan 2 is disposed above the primary cooling assembly and may be located in the middle area of ​​the tower body 1 .

[0082] This embodiment provides a fan 2 to promptly extract the hot air after heat exchange with cooling water in the tower body 1, so that new ambient air can enter, accelerate the air flow process in the tower body 1, and improve the cooling performance of the cooling tower.

[0083] In some embodiments, the cooling tower further includes a dehydration plate 3, which is disposed in the first area A and is located between the fan 2 and the primary cooling assembly in the height direction.

[0084] Furthermore, both the primary air inlet 11 and the secondary air inlet 12 may be provided with a defogger and water-blocking function.

[0085] This embodiment can prevent the water mist in the cooling tower from being lost into the air, thereby reducing the loss of cooling water.

[0086] Combine the following Figure 1 To illustrate the operation process of the cooling tower wind system.

[0087] Outdoor fresh air enters from the primary air inlet 11 and the secondary air inlet 12 of the tower body 1. The ambient air entering from the primary air inlet 11 directly exchanges heat with the cooling water in the primary cooling assembly for the first time. The ambient air entering from the secondary air inlet 12 enters the indirect cooling assembly and exchanges heat with the cooling water after secondary cooling in the vertical tube heat exchanger to precool the air temperature. The precooled air exchanges heat with the primary cooling water sprayed from the second nozzle in the secondary cooling assembly. The hot air after heat exchange flows upward along the air duct 9 and is discharged out of the tower under the suction action of the fan 2. The air duct 9 and the fan 2 at the top are used to guide the air in the tower from bottom to top to flow horizontally and vertically, increase the residence time, and enhance the heat exchange effect.

[0088] The cooling tower has multi-stage cooling. The cooling water after the first stage of cooling can use the ambient air to take away part of the heat. The cooled cooling water will again use the ambient air after pre-cooling to carry part of the heat. The cooling water after two stages of cooling flows out through the outlet pipe 18 connected to the secondary water receiving tray for recycling, which greatly reduces the heat transfer temperature difference and can effectively reduce the cooling water temperature.

[0089] Secondly, the present disclosure provides an air conditioning system, which in some embodiments includes: a condenser; and a cooling tower according to the above embodiment, wherein the cooling tower is used to cool cooling water passing through the condenser.

[0090] Because the cooling tower has better cooling performance and efficiency, it can quickly reduce the temperature of the cooling water, thereby better dissipating the heat generated by the condenser in the air-conditioning system and optimizing the performance of the air-conditioning system.

[0091] The above are merely exemplary embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A cooling tower, characterized in that: include: A tower body (1), wherein a first area (A), a second area (B) and a third area (C) are sequentially arranged in the tower body (1) from top to bottom along a height direction; A primary cooling assembly, comprising a first spray structure (6), a first heat exchange structure (7) and a primary water receiving tray (8), wherein the first spray structure (6) and the first heat exchange structure (7) are arranged in the first area (A), the top of the first spray structure (6) is used to receive cooling water entering through the water inlet pipe (4), the sprayed cooling water exchanges heat with the first heat exchange structure (7) to achieve first-stage cooling, and the first-stage water receiving tray (8) is arranged in the second area (B) and is used to receive cooling water after the first-stage cooling; and A secondary cooling component is arranged in the third area (C) and comprises a second spray structure (10), a second heat exchange structure (13) and a secondary water receiving tray (15); the second spray structure (10) is arranged at the bottom of the first water receiving tray (8) and is used to spray the cooling water in the first water receiving tray (8) to exchange heat with the second heat exchange structure (13) to achieve second-stage cooling; the second water receiving tray (15) is arranged in the third area (C) and at the bottom of the secondary cooling component and is used to receive the cooling water after the second-stage cooling; The tower body (1) is provided with a primary air inlet (11) in the second area (B) above the primary water receiving tray (8), and the tower body (1) is provided with a secondary air inlet (12) in the third area (C) above the secondary water receiving tray (15).

2. The cooling tower according to claim 1, characterized in that The first heat exchange structure (7) comprises a first heat exchange filler, in which a through hole (71) extending along the height direction is provided. The first spray structure (6) comprises a spray pipe (61) and a plurality of first spray heads (62). The spray pipe (61) is arranged in the through hole (71) and is rotatable around its own axis. The top of the spray pipe (61) is used to receive cooling water entering through the water inlet pipe (4). The plurality of first spray heads (62) are arranged on the outer wall of the spray pipe (61).

3. The cooling tower according to claim 2, characterized in that: A plurality of the first nozzles (62) are arranged at intervals along the height direction.

4. The cooling tower according to claim 3, characterized in that: A plurality of the first spray heads (62) are arranged on the side wall of the spray pipe (61) at equal intervals in a spiral along the height direction.

5. The cooling tower according to claim 2, characterized in that: It also includes an air duct (9) which is arranged at a central position in the second area (B) along the height direction, the top end of the air duct (9) abuts against the first heat exchange filler, and the bottom end of the air duct (9) is connected to the third area (C); A plurality of through holes (71) are provided in the first heat exchange filler and are all located in the peripheral area of ​​the air duct (9). A plurality of first spray structures (6) are provided, and the plurality of first spray structures (6) are arranged in a one-to-one correspondence with the plurality of through holes (71).

6. The cooling tower according to claim 1, characterized in that: The second heat exchange structure (13) contains a second heat exchange filler.

7. The cooling tower according to claim 1, characterized in that: The second spray structure (10) comprises a plurality of second spray heads, and the plurality of second spray heads are arranged at intervals at the bottom of the first-level water receiving tray (8).

8. The cooling tower according to claim 1, characterized in that The first heat exchange structure (7) and the second heat exchange structure (13) are arranged opposite to each other in the height direction.

9. The cooling tower according to any one of claims 1 to 8, characterized in that: The indirect cooling component is also included, which is arranged in the third area (C). The indirect cooling component includes a third heat exchange structure (14) and a pump (17). The third heat exchange structure (14) is located on the periphery of the second heat exchange structure (13) and above the secondary water receiving tray (15). The pump (17) is used to spray the cooling water in the secondary water receiving tray (15) to the third heat exchange structure (14) through a third nozzle (16) arranged on the top of the third heat exchange structure (14), and the cooling water re-enters the secondary water receiving tray (15) after heat exchange.

10. The cooling tower according to claim 9, characterized in that The secondary air inlet (12) is arranged in a region directly opposite to the third heat exchange structure (14).

11. The cooling tower according to claim 9, characterized in that Two indirect cooling components are provided and are symmetrically arranged relative to the second heat exchange structure (13), and each indirect cooling component is provided with a corresponding secondary air inlet (12).

12. The cooling tower according to claim 9, characterized in that The third heat exchange structure (14) comprises a vertical tube heat exchanger, and is configured to utilize the cooling water in the secondary water receiving tray (15) to exchange heat with the air entering through the secondary air inlet (12).

13. The cooling tower according to any one of claims 1 to 8, characterized in that: The cross-sectional area of ​​the tower body (1) in the first region (A) is smaller than the cross-sectional area of ​​the third region (C), and the side wall of the tower body (1) is arranged to be inclined outward from top to bottom in the second region (B), and the side wall is connected to an area close to the outside of the second heat exchange structure (13) at the bottom of the second region (B).

14. The cooling tower according to any one of claims 1 to 8, characterized in that: A fan (2) is provided at the top of the tower body (1) and is configured to draw space from the first area (A) to the outside.

15. The cooling tower according to claim 14, characterized in that It also comprises a dehydration plate (3), which is arranged in the first area (A) and is located between the fan (2) and the primary cooling assembly along the height direction.

16. An air conditioning system, characterized in that: include: Condenser; and The cooling tower according to any one of claims 1 to 15, wherein the cooling tower is used to cool the cooling water passing through the condenser.

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