Cooling tower liquid distribution nozzle, cooling tower and air conditioning system

Abstract

The invention discloses a cooling tower liquid distribution spray head, a cooling tower and an air conditioning system.The cooling tower liquid distribution spray head comprises a cylindrical component, an inlet for introducing a to-be-cooled medium is formed in one axial end of the cylindrical component, and a plurality of discharge hole layers used for discharging the to-be-cooled medium and arranged in the axial direction are arranged on the circumferential face of the cylindrical component; each discharge hole layer comprises a plurality of discharge holes which are formed in the circumferential direction of the cylindrical part; the movable part is movably arranged in the cylindrical part in the axial direction and is configured to bear the pressure of the medium introduced from the inlet of the cylindrical part, and the movable part is configured to prevent the medium introduced from the inlet of the cylindrical part from flowing towards the side, away from the inlet, of the movable part; and the elastic part is configured to push the movable part towards the inlet in the axial direction, and the movable part is configured to overcome the elastic force of the elastic part to move in the direction away from the inlet along with the increase of the pressure of the medium introduced into the inlet, so that the number of the discharge holes between the movable part and the inlet is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and more particularly, to a liquid distribution nozzle for a cooling tower, a cooling tower, and an air conditioning system. Background Art

[0002] A cooling tower includes a liquid distributor and a plurality of liquid distribution nozzles mounted on the liquid distributor. The liquid distribution nozzle has an inlet for introducing a medium to be cooled (such as water) communicated with the liquid distributor and discharge holes for discharging the above-mentioned medium. The plurality of discharge holes are arranged along the circumferential direction of the liquid distribution nozzle to distribute the medium to be cooled on a cooling structure for cooling the medium to be cooled.

[0003] In order to meet the demand for energy conservation, most cooling towers are also equipped with a variable-frequency cooling pump for outputting the medium cooled by the above-mentioned cooling structure; the variable-frequency cooling pump automatically adjusts the power change according to the amount of heat dissipated by the air conditioning system to adjust the output of the cooled medium (such as cooling water). When the output of the cooling tower changes, the liquid level inside the liquid distributor (liquid distribution tray) of the cooling tower changes, resulting in a change in the inlet pressure of the liquid distribution nozzle, thereby causing instability in the spraying area of the nozzle; when the inlet pressure is high, the spraying area of the nozzle is relatively large. Since the nozzle position is fixed, there will be an overlapping situation in the spraying area; when the inlet pressure is low, the spraying area of the nozzle is small, and there will be multiple waterless areas, affecting heat exchange. Summary of the Invention

[0004] The present invention aims to provide a liquid distribution nozzle for a cooling tower, a cooling tower, and an air conditioning system to improve the problem that the spraying area of the liquid distribution nozzle changes greatly due to the change of the inlet pressure in the prior art.

[0005] According to one aspect of an embodiment of the present invention, the present invention provides a liquid distribution nozzle for a cooling tower, which includes:

[0006] A cylindrical member having an inlet for introducing a medium to be cooled at one end in the axial direction. A plurality of discharge hole layers for discharging the medium to be cooled are provided on the circumferential surface of the cylindrical member and are arranged along the axial direction. Each discharge hole layer includes a plurality of discharge holes arranged along the circumferential direction of the cylindrical member;

[0007] A movable member movably disposed in the cylindrical member along the axial direction and configured to withstand the pressure of the medium introduced through the inlet of the cylindrical member. The movable member is configured to block the flow of the medium introduced through the inlet of the cylindrical member to the side of the movable member away from the inlet;

[0008] An elastic member configured to push the movable member axially towards the inlet. The movable member is configured to move away from the inlet against the elastic force of the elastic member as the pressure of the medium introduced through the inlet increases, so as to increase the number of discharge holes between the movable member and the inlet.

[0009] In some embodiments, the liquid distribution nozzle of the cooling tower further includes a plurality of dispersion components arranged axially and extending along the outer periphery of the cylindrical component respectively. The plurality of dispersion components are provided in one-to-one correspondence with the plurality of discharge hole layers and are respectively located on the side of the corresponding discharge hole layer away from the inlet. The dispersion components are configured to guide the medium discharged from the discharge hole layer corresponding to them towards the outer edge of the dispersion component away from the outer peripheral surface of the cylindrical component, and the outer diameters of the plurality of dispersion components gradually decrease in the direction away from the inlet.

[0010] In some embodiments, dispersion channels for guiding the medium discharged from the discharge holes towards the outer edge of the dispersion component are provided on the surface of the dispersion component on the side close to the inlet, and the plurality of dispersion channels are arranged circumferentially along the cylindrical component.

[0011] In some embodiments, the dispersion channels are inclined or bent with respect to the radial direction of the cylindrical component.

[0012] In some embodiments, the dispersion channels on the dispersion components are provided in one-to-one correspondence with the discharge holes.

[0013] At least part of the dispersion components are provided with axially penetrating medium circulation holes, and the medium circulation holes of the dispersion components are closer to the outer peripheral surface of the cylindrical component than the outer edge of the dispersion component on the side of the dispersion component away from the inlet.

[0014] In some embodiments, the plurality of medium circulation holes are arranged circumferentially along the cylindrical component; the medium circulation holes are provided in the dispersion channels of the dispersion components.

[0015] In some embodiments, a gap allowing the medium to pass through is provided between the outer peripheral surface of the movable component and the inner peripheral surface of the cylindrical component, and an outlet for discharging the medium is provided at one end of the cylindrical component away from the inlet.

[0016] In some embodiments, the liquid distribution nozzle of the cooling tower further includes a guiding component provided in the cylindrical component and configured to guide the movable component to move axially. The movable component includes a disc-shaped main body perpendicular to the axial direction and a guiding hole provided on the disc-shaped main body. The guiding component passes through the guiding hole, and the movable component is configured to move along the guiding component.

[0017] In some embodiments, the inner diameter of the guiding hole is larger than the outer diameter of the guiding component, and an outlet for outputting the medium is formed at one end of the cylindrical component away from the inlet.

[0018] In some embodiments, a first clamping structure is provided on the outer peripheral surface of one end of the cylindrical member where the inlet is located. The liquid distribution nozzle of the cooling tower further includes an end cover provided at the end of the cylindrical member where the inlet is located. The end cover includes a second clamping structure provided outside the cylindrical member and adapted to the first clamping structure, and a third clamping structure provided on the side of the second clamping structure away from the cylindrical member. The third clamping structure is used to mount the liquid distribution nozzle of the cooling tower on the mounting hole of the bearing member that bears the liquid distribution nozzle of the cooling tower.

[0019] In some embodiments, the end cover further includes a cylindrical portion sleeved inside the cylindrical member and a convex edge provided at one end of the cylindrical portion and protruding radially outward along the cylindrical portion. A protrusion is provided on the surface of the convex edge facing the cylindrical member. The second clamping structure and the third clamping structure are respectively located on the side of the protrusion close to the cylindrical member and on the side away from the cylindrical member.

[0020] According to another aspect of the present invention, there is also provided a cooling tower, which includes the above-mentioned liquid distribution nozzle of the cooling tower.

[0021] According to another aspect of the present invention, there is also provided an air conditioning system, which includes the above-mentioned cooling tower.

[0022] Applying the technical solution of the present application, the nozzle adjusts the position of the movable member as the pressure of the introduced medium changes, thereby adjusting the number of discharge holes communicating with the inner cavity of the flowing medium between the inlet of the cylindrical member and the movable member or the total flow area of the discharge holes communicating with the above-mentioned inner cavity, so as to improve the problem of large changes in the spraying distance caused by the change in the pressure of the introduced medium, and improve the problem of large changes in the spraying area of the liquid distribution nozzle in the prior art due to the change in the inlet pressure.

[0023] Through the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings, other features and advantages of the present invention will become clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 The perspective structural view of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0026] Figure 2 The split structural view of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0027] Figure 3 The front view structural schematic diagram of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0028] Figure 4 The sectional view structural schematic diagram of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0029] Figure 5 The three-dimensional structural schematic diagram of the combination of the cylindrical component, the dispersion component, the guiding component and the connecting component of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0030] Figure 6 The front view structural schematic diagram of the combination of the cylindrical component, the dispersion component, the guiding component and the connecting component of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0031] Figure 7 The sectional view structural schematic diagram of the combination of the cylindrical component, the dispersion component, the guiding component and the connecting component of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0032] Figure 8 The structural schematic diagram of the first dispersion component of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0033] Figure 9 The structural schematic diagram of the second dispersion component of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0034] Figure 10 The structural schematic diagram of the third dispersion component of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0035] Figure 11 The three-dimensional structural schematic diagram of the movable component of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0036] Figure 12 The front view structural schematic diagram of the movable component of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0037] Figure 13 The sectional view structural schematic diagram of the movable component of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0038] Figure 14 The three-dimensional structural schematic diagram of the inlet flow guiding component of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0039] Figure 15 The front view structural schematic diagram of the inlet flow guiding component of the liquid distribution nozzle of the cooling tower according to the embodiment of the present invention is shown.

[0040] Figure 16The sectional structural schematic diagram of the inlet flow guiding component of the cooling tower liquid distribution nozzle according to an embodiment of the present invention is shown.

[0041] Figure 17 The three-dimensional structural schematic diagram of the elastic component of the cooling tower liquid distribution nozzle according to an embodiment of the present invention is shown.

[0042] Figure 18 The front view structural schematic diagram of the elastic component of the cooling tower liquid distribution nozzle according to an embodiment of the present invention is shown.

[0043] Figure 19 The front view structural schematic diagram of the liquid distribution tray of the cooling tower liquid distribution nozzle according to an embodiment of the present invention is shown.

[0044] Figure 20 The schematic diagram of the working state of the cooling tower liquid distribution nozzle when the pressure of the liquid distribution tray is the first pressure according to an embodiment of the present invention is shown.

[0045] Figure 21 The schematic diagram of the working state of the cooling tower liquid distribution nozzle when the pressure of the liquid distribution tray is the second pressure according to an embodiment of the present invention is shown.

[0046] Figure 22 The schematic diagram of the working state of the cooling tower liquid distribution nozzle when the pressure of the liquid distribution tray is the third pressure according to an embodiment of the present invention is shown.

[0047] In the figure:

[0048] 1. Cylindrical component; 11. Discharge hole; 12. First clamping structure; 2. Dispersion component; 21. Dispersion flow channel; 22. Medium circulation hole; 3. Movable component; 31. Disk-shaped main body; 32. Sleeve; 33. Guide hole; 4. Elastic component; 5. Guide component; 6. End cover; 61. Second clamping structure; 62. Third clamping structure; 63. Cylindrical part; 64. Convex edge; 65. Protrusion; 7. Connecting component; 8. Liquid distributor. Detailed implementation manners

[0049] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restrictive of the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion.

[0051] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0052] In the description of this application, it should be noted that unless otherwise stated, "a plurality of" means two or more; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing this application 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 thus should not be construed as a limitation of this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range.

[0053] The orientation terms appearing in the following description are the directions shown in the figures and do not limit the specific structure of this application. In the description of this application, it should also be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] If not specifically stated, the "comprising" and "including" mentioned in this application can be open-ended or closed-ended. For example, the "comprising" and "including" can mean that other components not listed can also be included or contained, or only the components listed are included or contained.

[0055] Unless otherwise specified, the term "or" is inclusive in this application. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, any of the following conditions satisfies the condition "A or B": A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).

[0056] See this application's Figures 1 to 7 , the liquid distribution nozzle of the cooling tower in this embodiment includes a cylindrical component 1, a movable component 3, and an elastic component 4.

[0057] One axial end of the cylindrical component 1 is provided with an inlet for introducing the medium to be cooled, and a plurality of discharge hole layers for discharging the medium to be cooled and arranged axially are provided on the circumferential surface of the cylindrical component 1. Each discharge hole layer includes a plurality of discharge holes 11 arranged circumferentially along the cylindrical component 1.

[0058] The movable component 3 is axially movably arranged in the cylindrical component 1 and is configured to bear the pressure of the medium introduced at the inlet of the cylindrical component 1. The movable component 3 is configured to block the flow of the medium introduced at the inlet of the cylindrical component 1 to the side of the movable component 3 away from the inlet.

[0059] The elastic component 4 is configured to push the movable component 3 axially towards the inlet. The movable component 3 is configured to move away from the inlet against the elastic force of the elastic component 4 as the pressure of the medium introduced at the inlet increases, so as to increase the number of discharge holes 11 or the discharge area of the discharge holes between the movable component 3 and the inlet (the area of the discharge hole 11 blocked by the movable component 3 changes during the movement).

[0060] In the technical solution of this application, as the pressure of the medium introduced at the inlet of the cylindrical component 1 increases, the more the number of discharge holes 11 communicating with the inner cavity of the flowing medium between the inlet of the cylindrical component 1 and the movable component 3 or the total flow area of the discharge holes 11 communicating with the above inner cavity (the sum of the flow areas of all discharge holes connected to the inner cavity between the inlet of the cylindrical component 1 and the movable component 3, and the flow area of the discharge hole 11 partially blocked by the movable component 3 is the area of the unclosed part) is larger, the pressure of the medium discharged from each corresponding discharge hole 11 is reduced relative to not changing the number or total flow area of the discharge holes 11. Therefore, the increase in the jet distance of the medium caused by the increase in the pressure of the introduced medium can be balanced.

[0061] As the pressure of the medium introduced at the inlet of the cylindrical member 1 decreases, the fewer the discharge holes 11 communicating with the inner cavity of the medium flowing between the inlet of the cylindrical member 1 and the movable member 3, or the smaller the total flow area of the discharge holes 11, the greater the pressure of the medium discharged from each corresponding discharge hole 11 compared to when the number or total flow area of the discharge holes 11 remains unchanged. Therefore, it is possible to balance the reduction in the medium injection distance caused by the decrease in the pressure of the introduced medium.

[0062] In summary, the nozzle of the present embodiment adjusts the position of the movable member 3 according to the change in the pressure of the introduced medium, thereby adjusting the number of discharge holes 11 communicating with the inner cavity of the medium flowing between the inlet of the cylindrical member 1 and the movable member 3 or the total flow area of the discharge holes 11 communicating with the above-mentioned inner cavity, so as to improve the problem of large variation in the injection distance caused by the change in the pressure of the introduced medium, and improve the problem in the prior art that the spraying area of the liquid distribution nozzle changes greatly due to the change in the inlet pressure.

[0063] In the present embodiment, in the installed state of the cooling tower liquid distribution nozzle, the axial direction of the cylindrical member 1 is the vertical direction. The inlet of the cylindrical member 1 is provided at the top end of the cylindrical member 1. The movable member 3 moves vertically within the cylindrical member 1, thereby changing the distance between the movable member 3 and the inlet of the cylindrical member 1, and further changing the number of discharge holes 11 communicating with the inner cavity of the medium flowing between the inlet of the cylindrical member 1 and the movable member 3 or the total flow area of the discharge holes 11 communicating with the above-mentioned inner cavity.

[0064] The cooling tower liquid distribution nozzle further includes a plurality of dispersion members 2 arranged axially and extending along the outer periphery of the cylindrical member 1 respectively. The plurality of dispersion members 2 are provided corresponding to a plurality of discharge hole layers one by one and are respectively located on the side away from the inlet of the corresponding discharge hole layer. The dispersion member 2 is configured to guide the medium discharged from the corresponding discharge hole layer to the outer edge away from the outer peripheral surface of the cylindrical member 1. The outer diameters of the plurality of dispersion members 2 gradually decrease in the direction away from the inlet.

[0065] The dispersion member 2 is provided on the side away from the cylindrical member 1 of the corresponding discharge hole layer and on the side close to the inlet of another discharge hole layer adjacent to the corresponding discharge hole layer in the axial direction of the cylindrical member 1, that is, the dispersion member 2 is provided between the corresponding discharge hole layer and another discharge hole layer adjacent to the corresponding discharge hole layer in the axial direction of the cylindrical member 1. The above-mentioned corresponding discharge hole layer and the above-mentioned another discharge hole layer are adjacent in the vertical direction and are arranged in sequence from top to bottom.

[0066] See Figure 6 and Figure 7 The dispersion member 2 of the nozzle of the present embodiment includes a first dispersion member, a second dispersion member, and a third dispersion member arranged in sequence in the direction away from the inlet of the cylindrical member 1. Figures 8 to 9The top view structural schematic diagrams of the first dispersion component, the second dispersion component, and the third dispersion component are shown in sequence. The first dispersion component, the second dispersion component, and the third dispersion component are arranged in sequence from top to bottom. The outer diameters of the first dispersion component, the second dispersion component, and the third dispersion component decrease in sequence.

[0067] The outer diameters of the multiple dispersion components 2 decrease in sequence along the direction away from the inlet of the cylindrical component 1. The multiple dispersion components 2 respectively distribute the medium discharged from the corresponding discharge hole layer to different distances from the cylindrical component 1, which is beneficial to improving the dispersion of liquid distribution of the liquid distribution nozzle, improving the heat dissipation efficiency of the medium, and also beneficial to improving the refrigeration efficiency of the air conditioning system.

[0068] Participate Figures 5 to 10 , on the surface of the side of the dispersion component 2 close to the inlet, there is a dispersion flow channel 21 for guiding the medium discharged from the discharge hole 11 towards the outer edge of the dispersion component 2. The multiple dispersion flow channels 21 are arranged along the circumferential direction of the cylindrical component 1. The multiple dispersion flow channels 21 disperse the medium to different azimuths in the circumferential direction of the cylindrical component 1 according to a predetermined direction, which is beneficial to improving the uniformity of medium dispersion and avoiding the concentration caused by the random flow of the medium, thereby improving the uniformity of medium dispersion.

[0069] See Figure 5 And Figures 8 to 10 , the dispersion flow channel 21 is inclined or bent relative to the radial direction of the cylindrical component 1. The medium discharged from the dispersion flow channel 21 has a tendency to move along the circumferential direction of the dispersion component 2, which is beneficial to controlling the range and uniformity of medium dispersion (when the direction of the dispersion flow channel 21 is consistent with the radial direction, there may be blank areas where the medium cannot be distributed between two adjacent dispersion flow channels 21).

[0070] The dispersion component 2 is an annular disc-shaped structure sleeved outside the cylindrical component 1. On the side of the dispersion component 21 adjacent to the inlet of the cylindrical component 1 (i.e., the upper side), there are strip-shaped protrusions extending from the outer peripheral surface of the cylindrical component 1 towards the outer edge of the dispersion component 21. The multiple strip-shaped protrusions are arranged along the circumferential direction of the cylindrical component 1, and the dispersion flow channel 21 is formed between two adjacent strip-shaped protrusions.

[0071] The dispersion flow channels 21 on the dispersion component 2 are arranged in one-to-one correspondence with the discharge holes 11. One dispersion flow channel 21 is correspondingly arranged for each discharge hole 11, which is beneficial to reducing the width of each dispersion flow channel 21. Compared with the problem that the medium is prone to aggregation in the dispersion flow channel 21 with a large width, correspondingly arranging one dispersion flow channel 21 for each discharge hole 11 helps to improve the uniformity of medium distribution.

[0072] At least a part of the dispersion member 2 near the inlet of the cylindrical member 1 is provided with a medium flow-through hole 22 penetrating axially. The medium flow-through hole 22 of the dispersion member 2 is closer to the outer peripheral surface of the cylindrical member 1 than the outer edge of the dispersion member 2 on the side (i.e., further below) of the dispersion member 2 away from the inlet.

[0073] See Figures 19 to 22 , a medium flow-through hole 22 penetrating the dispersion member 2 is provided on a part of the dispersion member 2 near the inlet (i.e., higher) of the cylindrical member 1. A part of the medium of the dispersion member 2 flows towards the outer edge of the dispersion member 2 away from the cylindrical member 1, and the other part flows through the medium flow-through hole 22 to the dispersion member 2 of the lower layer. Since the outer diameter of the dispersion member 2 of the lower layer is smaller than that of the dispersion member 2 of the upper layer, even when only the medium holes of the relatively upper layer discharge the medium, the medium can also be dispersed and distributed at different distances of the specific cylindrical member 1 by multiple dispersion parts 2, improving the uniformity of medium dispersion and thus improving the heat exchange efficiency of the medium.

[0074] The multiple medium flow-through holes 22 are arranged circumferentially along the cylindrical member 1, so that the medium flowing out to the dispersion member 2 on the lower side exists in multiple circumferential directions of the dispersion member 2, improving the uniformity of medium distribution and further improving the heat dissipation efficiency of the medium.

[0075] The medium flow-through hole 22 is arranged in the dispersion flow channel 21 of the dispersion member 2. The medium discharged from the discharge hole 11 flows convergently in the dispersion flow channel 21, and the medium flow-through hole 22 is arranged inside so that the medium flowing through the dispersion flow channel 21 can smoothly flow to the dispersion member 2 of the lower layer.

[0076] The upper surface of the dispersion member 2 is provided with a plurality of strip-shaped protrusions arranged circumferentially along the cylindrical member 1, and a dispersion flow channel 21 is formed between two adjacent strip-shaped protrusions. The width of the dispersion flow channel 21 gradually increases, so that the medium is gradually dispersed in the dispersion flow channel 21 to improve the uniformity of the distributed medium.

[0077] In some embodiments, the medium flow-through hole 22 is arranged at the upstream end of the dispersion flow channel 21 close to the cylindrical member 1, so that more medium can be diverted to the dispersion member 2 on the lower side, and further improve the uniformity of the medium in the direction away from the cylindrical member 1 (i.e., the radial direction of the cylindrical member 1).

[0078] A gap allowing the medium to pass through is provided between the outer peripheral surface of the movable member 3 and the inner peripheral surface of the cylindrical member 1. An outlet for discharging the medium is provided at one end of the cylindrical member 1 away from the inlet. The medium is also distributed downward in the cylindrical member 1, further improving the uniformity of the medium in the radial direction away from the cylindrical member 1.

[0079] See Figure 2 And Figures 11 to 13, the liquid distribution nozzle of the cooling tower further includes a guiding component 5 disposed within the cylindrical component 1 and configured to guide the movable component 3 to move axially. The movable component 3 includes a disc-shaped main body 31 perpendicular to the axial direction and a guiding hole 33 provided on the disc-shaped main body 31. The guiding component 5 is inserted into the guiding hole 33, and the movable component 3 is configured to move along the guiding component 5. The guiding component 5 is a rod-shaped component extending along the axis direction of the cylindrical component 1 to ensure that the movable component 3 moves smoothly within the cylindrical component 1 to adjust the number of discharge holes 11 communicating with the inner cavity of the circulating medium between the inlet of the cylindrical component 1 and the movable component 3 or the total flow area of the discharge holes 11 communicating with the above-mentioned inner cavity, so as to improve the problem of large changes in the spraying distance caused by the pressure change of the introduced medium, and improve the problem of large changes in the spraying area of the liquid distribution nozzle in the prior art due to the change of the inlet pressure.

[0080] The inner diameter of the guiding hole 33 is larger than the outer diameter of the guiding component 5, so that a part of the medium can flow downward of the movable component 3, and an outlet for outputting the medium is formed at one end of the cylindrical component 1 away from the inlet. There is also medium distributed downward within the cylindrical component 1, further improving the uniformity of the medium in the radial direction away from the cylindrical component 1.

[0081] Furthermore, the movable component 3 further includes a sleeve 32 disposed on the side of the disc-shaped main body 31 away from the inlet of the cylindrical component 1. The sleeve 32 is sleeved outside the guiding hole 33, and the inner diameter of the sleeve 32 is larger than the diameter of the guiding hole 33. The rod-shaped guiding component 5 is sleeved within the sleeve 32 and inserted into the guiding hole 33. One end of the rod-shaped guiding component 5 away from the inlet of the cylindrical component 1 is connected to the cylindrical component 1 through a connecting component 7 to fix it within the cylindrical component 1. The connecting components 7 are multiple and arranged circumferentially along the guiding component 5. One end of each connecting component 7 is connected to the guiding component 5, and the other end is connected to the inner wall of the cylindrical component 1. Optionally, the connecting component 7 is rod-shaped.

[0082] Two adjacent connecting components 7 in the circumferential direction of the guiding component 5 are spaced apart, so that the medium flowing within the cylindrical component 1 flows toward the end away from the above-mentioned inlet (i.e., the lower end), thereby distributing the medium flowing within the cylindrical component 1 below the cylindrical component 1.

[0083] Furthermore, referring to Figure 17 and 18 as well as Figure 2 , the elastic component 4 is a helical spring extending along the circumferential direction of the guiding component 5. The elastic component 4 is sleeved outside the guiding component 5, and one end of the elastic component 4 is sleeved between the sleeve 32 of the movable component 3 and the rod-shaped guiding component 5 and abuts against the disc-shaped main body 31, and the other end of the elastic component 4 abuts against the connecting component 7 to push the movable component 3 toward the inlet of the cylindrical component 1.

[0084] See Figure 2 、 Figures 14 to 16 and Figure 19 , a first clamping structure 12 is provided on the outer peripheral surface of the end of the cylindrical member 1 provided with an inlet. The cooling tower liquid distributor nozzle further includes an end cover 6 provided at the end of the cylindrical member 1 provided with an inlet. The end cover 6 includes a second clamping structure 61 provided outside the cylindrical member 1 and adapted to the first clamping structure 12 and a third clamping structure 62 provided on the side of the second clamping structure 61 away from the cylindrical member 1. The third clamping structure 62 is used to mount the cooling tower liquid distributor nozzle on the mounting hole of the bearing member for bearing the cooling tower liquid distributor nozzle.

[0085] In this embodiment, the end cover 6 is connected to the cylindrical member 1 through the second clamping structure 61 and is mounted on the above-mentioned bearing structure through the second clamping structure, which has the advantages of simple installation and convenient operation.

[0086] In some embodiments, the bearing member includes a liquid distributor of the cooling tower. Optionally, the liquid distributor is a disc-shaped liquid distribution disc. The above-mentioned mounting hole is provided on the bottom wall of the above-mentioned liquid distributor.

[0087] The end cover 6 further includes a cylindrical portion 63 sleeved inside the cylindrical member 1 and a convex edge 64 provided at one end of the cylindrical portion 63 and protruding radially outward along the cylindrical portion 63. A protrusion 65 is provided on the surface of the convex edge 64 facing the cylindrical member 1. The second clamping structure 61 and the third clamping structure 62 are respectively located on the side of the protrusion 65 close to the cylindrical member 1 and the side away from the cylindrical member 1. The above-mentioned protrusion 65 is sleeved inside the above-mentioned mounting hole and outside the cylindrical member 1.

[0088] The second clamping structure 61 is a first clamping protrusion protruding towards the cylindrical member 1 relative to the protrusion 65. The first clamping protrusion has a first guiding inclined surface gradually inclined away from the cylindrical member 1 along the direction away from the convex edge 64. The second clamping structure has a second guiding inclined surface gradually inclined towards the cylindrical member 1 along the direction away from the convex edge 64. During the process of mounting the liquid distributor nozzle on the liquid distributor 8, first insert the end cover 6 into the mounting hole on the liquid distributor 8. During this process, the second guiding inclined surface moves downward relative to the outer edge of the mounting hole. Then, the outer edge of the mounting hole is stuck between the second clamping protrusion and the convex edge 64. Then, insert the cylindrical member 1 between the protrusion 65 and the cylindrical portion 63. During this process, the first clamping structure 12 moves upward along the second guiding inclined surface. Then, the first clamping structure 12 and the second clamping protrusion are clamped and matched.

[0089] The liquid distributor nozzle of this embodiment has the characteristics of gradual installation, simple structure, simplified structure and low cost.

[0090] In some embodiments, the cylindrical structure 1, the plurality of dispersion components 2, the guiding component 5, and the connecting component 7 are connected as a whole. Specifically, the installation process of the liquid distribution nozzle is as follows:

[0091] Insert the end cap 6 into the installation hole of the liquid distributor 8;

[0092] Sheathe the elastic component 4 on the rod-shaped guiding component 5, and sheathe the movable component 3 on the guiding component 5,

[0093] Insert the upper end of the cylindrical component 1 between the above-mentioned protrusion 65 and the sleeve 63 so that the cylindrical component 1 is snap-connected to the end cap 6.

[0094] Combine Figures 19 to 22 As shown, as the liquid level in the water distributor 8 gets higher and the hydraulic pressure gets greater, it will force the movable component 3 to descend and compress the elastic component 4. When the liquid level slowly reaches 10% of the standard working condition, refer to Figure 20 , at this time, during the descending process of the movable component 3, the corresponding discharge holes 11 above the first component are slowly exposed. When the liquid level reaches 30%, the movable component 3 stays at the middle position between the first dispersion component and the second dispersion component. At this time, a part of the medium flowing out from the discharge hole layer at the top is diverted and sprayed out through the dispersion flow channel 21 of the first heat dissipation component, and another part is shunted to the second dispersion component through the medium circulation holes 22 on the first dispersion component. The medium of the second dispersion component will then flow out a part of the medium through the dispersion flow channel 21 of the second dispersion component, and the other part flows to the third dispersion component through the medium circulation holes of the second dispersion component. In this way, it is ensured that the nozzle can spray on each layer regardless of whether the liquid level is in the standard condition.

[0095] Refer to Figure 21 , when the liquid level slowly reaches 30%-60% of the standard working condition, the liquid level pressure slowly increases to about 2 times that of compressing the movable component 3 between the first dispersion component and the second dispersion component. The movable component 3 compresses the elastic component 4 again, and the movable component 3 slowly reaches the position in the middle of the second dispersion component and the third dispersion component. The total discharge flow area of the medium also slowly becomes twice that of the first dispersion component, so the spraying range is also roughly the same.

[0096] Refer to Figure 22 , when the liquid level slowly reaches 60%-100% of the standard working condition, the water discharge area becomes three times that of the first dispersion component, and the liquid level pressure slowly increases to about 3 times that of the first dispersion component, so the range is also roughly the same; in addition to flowing out from the three-layer water distribution area, since there is a gap between the movable component 3 and the inner peripheral surface of the cylindrical component 1, water can also flow out from directly below. In this way, it is ensured that the entire sprinkling process of the nozzle covers all the surrounding areas.

[0097] The liquid distribution nozzle of this embodiment achieves the following technical effects:

[0098] 1. Three discharge hole layers and corresponding three dispersion components are designed. Through the layer-by-layer distribution of the medium and the guidance of the dispersion components (flow guiding walls), uniform spraying is ensured at different liquid levels.

[0099] 2. Liquid level adaptive adjustment mechanism: A dynamic adjustment system using elastic component 4 and movable components automatically adjusts the water outlet position according to the liquid level change, which is beneficial to maintaining a consistent spraying range.

[0100] 3. Ensure relatively stable internal hydraulic pressure of the nozzle, so that the medium (water) is continuously sprayed below the nozzle, thereby achieving a stable and uniform effect of the spraying range.

[0101] In summary, regardless of how the liquid level changes, the nozzle of this patent can ensure a constant spraying range.

[0102] According to another aspect of the present invention, a cooling tower is also provided, and the cooling tower includes the above-mentioned liquid distribution nozzle of the cooling tower.

[0103] According to another aspect of the present invention, an air conditioning system is also provided, and the air conditioning system includes the above-mentioned cooling tower.

[0104] The above are only exemplary embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A liquid distribution nozzle for a cooling tower, characterized in that, Comprising: A cylindrical member (1) having an inlet at one axial end for introducing a medium to be cooled, and a plurality of discharge hole layers arranged axially and for discharging the medium to be cooled are provided on the circumferential surface of the cylindrical member (1), each discharge hole layer including a plurality of discharge holes (11) arranged circumferentially of the cylindrical member (1); A movable member (3) movably arranged axially within the cylindrical member (1) and configured to withstand the pressure of the medium introduced at the inlet of the cylindrical member (1), the movable member (3) being configured to block the flow of the medium introduced at the inlet of the cylindrical member (1) towards the side of the movable member (3) remote from the inlet; An elastic member (4) configured to push the movable member (3) axially towards the inlet, the movable member (3) being configured to move in a direction away from the inlet against the elastic force of the elastic member (4) as the pressure of the medium introduced at the inlet increases, so as to increase the number of discharge holes (11) between the movable member (3) and the inlet; 2. The liquid distribution nozzle for a cooling tower according to claim 1, characterized in that, Also included are a plurality of dispersion members (2) arranged axially and extending respectively along the outer periphery of the cylindrical member (1), the plurality of dispersion members (2) being provided in one-to-one correspondence with the plurality of discharge hole layers and located respectively on the side of the corresponding discharge hole layer remote from the inlet, the dispersion members (2) being configured to guide the medium discharged from the corresponding discharge hole layer towards the outer edge of the dispersion member (2) remote from the outer peripheral surface of the cylindrical member (1), and the outer diameters of the plurality of dispersion members (2) gradually decreasing in a direction away from the inlet; 3. The liquid distribution nozzle for a cooling tower according to claim 2, characterized in that, On the surface of the dispersion member (2) on the side close to the inlet, there are provided dispersion channels (21) for guiding the medium discharged from the discharge holes (11) towards the outer edge of the dispersion member (2), and the plurality of dispersion channels (21) are arranged circumferentially of the cylindrical member (1); 4. The liquid distribution nozzle for a cooling tower according to claim 2, characterized in that, The dispersion channels (21) are inclined or bent with respect to the radial direction of the cylindrical member (1); 5. The liquid distribution nozzle for a cooling tower according to claim 4, characterized in that, The dispersion channels (21) on the dispersion member (2) are provided in one-to-one correspondence with the discharge holes (11); 6. The liquid distribution nozzle for a cooling tower according to any one of claims 2 to 5, characterized in that, At least part of the dispersion member (2) is provided with a medium through-hole (22) penetrating axially, and the medium through-hole (22) of the dispersion member (2) is closer to the outer peripheral surface of the cylindrical member (1) than the outer edge of the dispersion member (2) on the side of the dispersion member (2) remote from the inlet; 7. The liquid distribution nozzle for a cooling tower according to claim 6, wherein A plurality of medium through-holes (22) are arranged circumferentially of the cylindrical member (1); the medium through-holes (22) are provided within the dispersion channels (21) of the dispersion member (2); 8. The liquid distribution nozzle for a cooling tower according to claim 1, wherein A gap allowing the medium to pass through is provided between the outer peripheral surface of the movable member (3) and the inner peripheral surface of the cylindrical member (1), and an outlet for discharging the medium is provided at one end of the cylindrical member (1) remote from the inlet.

9. The liquid distribution nozzle for a cooling tower according to claim 1, wherein, It further includes a guiding component (5) disposed within the cylindrical component (1) and configured to guide the movable component (3) to move along the axial direction. The movable component (3) includes a disc-shaped main body (31) perpendicular to the axial direction and a guiding hole (33) provided on the disc-shaped main body (31). The guiding component (5) is inserted into the guiding hole (33), and the movable component (3) is configured to move along the guiding component (5).

10. The liquid distribution nozzle for a cooling tower according to claim 9, characterized in that, The inner diameter of the guiding hole (33) is larger than the outer diameter of the guiding component (5), and an outlet for outputting the medium is formed at one end of the cylindrical component (1) away from the inlet.

11. The liquid distribution nozzle for a cooling tower according to claim 1, characterized in that, A first clamping structure (12) is provided on the outer peripheral surface of the end of the cylindrical component (1) provided with the inlet. The liquid distribution nozzle of the cooling tower further includes an end cover (6) provided at the end of the cylindrical component (1) provided with the inlet. The end cover (6) includes a second clamping structure (61) disposed outside the cylindrical component (1) and adapted to the first clamping structure (12), and a third clamping structure (62) provided on a side of the second clamping structure (61) away from the cylindrical component (1). The third clamping structure (63) is used to mount the liquid distribution nozzle of the cooling tower on the mounting hole of the carrying component carrying the liquid distribution nozzle of the cooling tower.

12. The liquid distribution nozzle for a cooling tower according to claim 11, characterized in that, The end cover (6) further includes a cylindrical portion (63) sleeved within the cylindrical component (1) and a convex edge (64) provided at one end of the cylindrical portion (63) and protruding radially outward along the cylindrical portion (63). A protrusion (65) is provided on a surface of the convex edge (64) facing the cylindrical component (1). The second clamping structure (61) and the third clamping structure (62) are respectively located on a side of the protrusion (65) close to the cylindrical component (1) and a side away from the cylindrical component (1).

13. A cooling tower, characterized in that, It includes the liquid distribution nozzle of the cooling tower according to any one of claims 1 to 12.

14. An air conditioning system, characterized in that, It includes the cooling tower according to claim 13.

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