Spray head device and cooling tower

Abstract

The invention relates to a spray head device and a cooling tower. The spray head device comprises a shell, a spiral blade and a water dispersing piece. The shell comprises a water inlet section, a vortex generating section and a water outlet section which are sequentially arranged in the height direction. The spiral blade is fixedly arranged on the inner wall of the vortex generating section, forms a spiral flow channel in the vortex generating section and is used for enabling cooling water entering from the water inlet section to flow along the spiral flow channel to form a vortex. The water dispersing piece is arranged on the lower side of the shell and used for dispersing cooling water discharged from the water outlet section. The spiral flow channel is formed by the fixedly-arranged spiral blades, the flowing path of water flow in the shell is changed, direct falling is converted into layer-by-layer rotary flowing along the spiral flow channel, the water flow obtains radial kinetic energy, the influence of water pressure fluctuation is small, and therefore the stability of large-range spraying is improved, and the spraying efficiency is improved. The rotary water curtain can be further refined and diffused by the water dispersing piece, fine and dense small water drops are sprayed in a large range, and large-range uniform spraying is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cooling towers, and in particular to a nozzle device and a cooling tower. Background Art

[0002] The function of the sprinkler heads in a cooling tower's water distribution pan is to evenly distribute cooling water to the packing below the pan, achieving heat exchange between water and air. Improving the performance of these sprinkler heads directly impacts the performance of the cooling tower. Existing sprinkler heads cannot achieve stable, wide-area spraying, a technical issue that urgently requires improvement. Summary of the Invention

[0003] The present application provides a nozzle device and a cooling tower to improve the stability of the nozzle device in large-scale spraying.

[0004] A first aspect of the present disclosure provides a spray head device, comprising:

[0005] The housing comprises a water inlet section for water intake, a vortex generating section for generating a vortex, and a water outlet section for discharging water, which are sequentially arranged in a height direction;

[0006] a spiral blade fixedly mounted on the inner wall of the vortex generating section, the spiral blade forming a spiral flow channel in the vortex generating section, and configured to cause the cooling water entering from the water inlet section to flow along the spiral flow channel to form a vortex; and

[0007] The water spreading member is arranged on the lower side of the shell and is used to disperse the cooling water discharged from the water outlet section.

[0008] In some embodiments, outer edges of the spiral blades are connected to the inner wall of the vortex generating section.

[0009] In some embodiments, the vortex generating section is a cylindrical structure, and the radial size of the spiral blade in the vortex generating section is smaller than the radius of the vortex generating section so that the spiral blade forms a core gap in the axial area of ​​the vortex generating section, and part of the cooling water flows along the spiral flow channel, and another part of the cooling water falls through the core gap.

[0010] In some embodiments, the thickness of the spiral blade gradually decreases in a direction approaching the core gap.

[0011] In some embodiments, the spiral blade is configured such that the helical line inclination angle of the spiral flow channel is greater than or equal to 10° and less than or equal to 35°.

[0012] In some embodiments, the water scattering member includes an inner ring water scattering member and an outer ring water scattering member. The outer ring water scattering member is located radially outside the inner ring water scattering member, and an annular gap is formed between the outer ring water scattering member and the inner ring water scattering member.

[0013] In some embodiments, the outer ring water diffuser includes a first disc and a plurality of outer diverter teeth. The central area of ​​the first disc has a through hole. The inner ring water diffuser is arranged at the through hole. The plurality of outer diverter teeth are spaced apart on the surface of the first disc.

[0014] In some embodiments, the tooth tops of the outer splitter teeth at a portion away from the through hole have a sawtooth structure; and / or the tooth tops of the outer splitter teeth at a portion close to the through hole have a blade-like structure.

[0015] In some embodiments, the inner ring water diffuser includes a plurality of inner diverter teeth and a second disc, and the plurality of inner diverter teeth are spaced apart and distributed on the surface of the second disc.

[0016] In some embodiments, the tooth tops of the inner diverter teeth close to the outer ring water diffuser have a sawtooth structure; and / or the tooth tops of the inner diverter teeth away from the outer ring water diffuser have a blade-like structure.

[0017] In some embodiments, the inner ring water diffuser and the outer ring water diffuser each have a plurality of tooth-like structures spaced apart in the circumferential direction, and the number of the tooth-like structures of the inner ring water diffuser is greater than the number of the tooth-like structures of the outer ring water diffuser.

[0018] In some embodiments, the water outlet section is a cylindrical structure and one end of the water outlet section close to the water diffuser is expanded.

[0019] In some embodiments, the diameter of the water outlet section first decreases and then increases from one end of the water outlet section away from the water diffuser to the other end of the water outlet section.

[0020] In some embodiments, the shell includes a plurality of strip holes provided in the water inlet section, and the plurality of strip holes penetrates the shell wall of the water inlet section.

[0021] In some embodiments, the water inlet section is a cylindrical structure, and the multiple strip holes include multiple first strip holes extending along the axial direction of the water inlet section and multiple second strip holes extending along the circumferential direction of the water inlet section, and the first strip holes and the second strip holes are spaced apart in the axial direction of the water inlet section.

[0022] A second aspect of the present application provides a cooling tower, comprising the nozzle device as described above and an air duct assembly.

[0023] Based on the technical solution provided in this application, the nozzle device includes a housing, spiral blades, and a water dispersion component. The housing includes a water inlet section for water intake, a vortex generation section for generating vortices, and a water outlet section for water discharge, which are arranged in sequence in the vertical direction. The spiral blades are fixedly mounted on the inner wall of the vortex generation section, forming a spiral flow channel within the vortex generation section. The spiral blades are used to cause cooling water entering from the water inlet section to flow along the spiral flow channel to form a vortex. The water dispersion component is disposed on the lower side of the housing and is used to disperse the cooling water discharged from the water outlet section. It does not rely on rotating parts to increase centrifugal force, but forms a spiral flow channel through fixed spiral blades, changing the flow path of water in the shell, from direct falling to layer-by-layer rotary flow along the spiral flow channel, so that the water flow obtains radial kinetic energy and is less affected by water pressure fluctuations. Even if there is unstable water pressure, the cooling water entering the shell still needs to flow along the spiral flow channel, thereby realizing the effective conversion of gravitational potential energy into radial kinetic energy, forming a rotating water curtain, thereby improving the stability of large-scale spraying of the sprinkler device. The rotating water curtain can also be further refined and diffused by the water dispersion parts, spraying fine and dense water droplets in a larger range, improving the uniform spraying over a large range. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0025] Figure 1 Schematic diagram of the overall structure of the nozzle device in some embodiments of the present disclosure.

[0026] Figure 2 for Figure 1 sectional view.

[0027] Figure 3 This is a cross-sectional view of the water inlet section of the nozzle device of some embodiments of the present disclosure.

[0028] Figure 4 This is a top view of the water dispersion component of the sprinkler device according to some embodiments of the present disclosure.

[0029] Figure 5 This is a three-dimensional schematic diagram of a water dispersion component of a sprinkler device according to some embodiments of the present disclosure.

[0030] Figure 6 1 is a cross-sectional view of a water dispersing member of a sprinkler device according to some embodiments of the present disclosure.

[0031] Figure 7 This is a three-dimensional schematic diagram of the outer diverter teeth of the nozzle device in some embodiments of the present disclosure.

[0032] Figure 8This is a three-dimensional schematic diagram of the inner diverter teeth of the nozzle device in some embodiments of the present disclosure.

[0033] Description of Reference Numerals

[0034] 1. Shell; 11. Water inlet section; 12. Vortex generation section; 13. Water outlet section; 14. First hole; 15. Second hole;

[0035] 2. Spiral blades;

[0036] 3. Diffuser; 31. First disc; 32. External diverter teeth; 33. Through hole; 34. Internal diverter teeth; 35. Second disc;

[0037] 4. Chuck;

[0038] 5. Support ribs. DETAILED DESCRIPTION

[0039] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure, its application, or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions, and numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0040] The terms "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The terms "include" or "comprises" and similar terms mean that the elements before the term include the elements listed after the term, and do not exclude the possibility of also including other elements. The terms "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] In the present disclosure, when a specific device is described as being located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When a specific device is described as being connected to another device, the specific device may be directly connected to the other device without an intervening device, or may be not directly connected to the other device but with an intervening device.

[0042] All terms (including technical or scientific terms) used in this disclosure have the same meaning as those understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined herein.

[0043] 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.

[0044] Based on the above-mentioned embodiments of the present disclosure, in the absence of explicit negation or conflict, the technical features of one embodiment may be beneficially combined with one or more other embodiments.

[0045] Through research, the inventors discovered that a common method for expanding the cooling water spray range is to apply centrifugal force to the cooling water during its flow, creating a rotating water curtain. To achieve this effect, a rotating component is typically installed in the shower head. By causing the cooling water to impact the rotating component during its falling motion, the rotating component rotates, thereby applying centrifugal force to the cooling water, thereby expanding the cooling water spray range. However, this implementation method places certain demands on the cooling water pressure. For example, when the water pressure is relatively stable, the cooling water's velocity during its fall also remains within a stable range, resulting in a stable range for the impact force of the water flow on the rotating component. Consequently, the rotating component rotates at a relatively stable speed, exerting a relatively stable force on the water flow, thereby achieving a relatively stable spray range. However, when the water pressure fluctuates significantly, the impact force of the water flow on the rotating component varies significantly, and the force exerted by the rotating component on the water flow also varies significantly, resulting in significant variations in the spray range of the shower head, making it impossible to achieve a stable, wide-area spray. Furthermore, this method of expanding the water spray range by relying on a rotating component also suffers from high friction losses and maintenance costs.

[0046] To overcome these shortcomings, refer to Figures 1 to 3 , the present application provides a nozzle device, comprising:

[0047] The housing 1 includes a water inlet section 11 for water intake, a vortex generating section 12 for generating vortex, and a water outlet section 13 for discharging water, which are sequentially arranged in the height direction;

[0048] The spiral blade 2 is fixedly mounted on the inner wall of the vortex generating section 12. The spiral blade 2 forms a spiral flow channel in the vortex generating section 12. The spiral blade 2 is used to make the cooling water entering from the water inlet section 11 flow along the spiral flow channel to form a vortex; and

[0049] The water diffuser 3 is provided on the lower side of the housing 1 and is used to disperse the cooling water discharged from the water outlet section 13 .

[0050] Specifically, the housing 1 extends generally in a vertical direction, and the spiral blades 2 extend radially from the inner wall of the vortex generating section 12 toward the center of the vortex generating section 12. That is, the spiral blades 2 fill a majority of the cross-sectional area of ​​the vortex generating section 12. When the cooling water entering the housing 1 falls under the action of gravity, it flows layer by layer along the surface of the spiral blades 2 toward the end of the spiral blades 2. During this process, a portion of the water's gravitational potential energy is converted into radial kinetic energy, causing the water to have a certain radial velocity when it flows out of the end of the spiral blades 2, forming a rotating water curtain, thereby increasing the spray range of the cooling water. Furthermore, the rotating water curtain will collide with the water dispersion member 3 during its descent, causing splashing at the water dispersion member 3, causing the water film to rupture and form uniform, fine droplets, enhancing the uniform water distribution effect and expanding the spray range.

[0051] In this embodiment, the centrifugal force is increased without relying on rotating parts. Instead, a spiral flow channel is formed by fixed spiral blades 2, which changes the flow path of the water flow in the shell 1, changing it from direct falling to layer-by-layer rotary flow along the spiral flow channel, so that the water flow obtains radial kinetic energy and is less affected by water pressure fluctuations. Even if the water pressure is unstable, the cooling water entering the shell 1 still needs to flow along the spiral flow channel, thereby realizing the effective conversion of gravitational potential energy into radial kinetic energy, forming a rotating water curtain, thereby improving the stability of the large-scale spraying of the nozzle device. The rotating water curtain can also be further refined and diffused by the water dispersion member 3, spraying small and dense water droplets over a larger range, thereby improving the uniform spraying over a large range.

[0052] It is also worth noting that since there is a water outlet section 13 on the lower side of the flow generating section 12, and the end of the spiral flow channel does not extend to the water outlet section, the rotating water curtain flowing out of the spiral flow channel will also collide with the inner wall of the water outlet section 13 to form splashing, which also increases the uniform water distribution effect and spray range to a certain extent.

[0053] In some embodiments, outer edges of the spiral blades 2 are connected to the inner wall of the vortex generating section 12 .

[0054] Specifically, the spiral blade 2 is a single integrally formed structural member and is constructed in a spiral shape. The entire outer edge of the spiral blade 2 on its extension path is connected to the inner wall of the vortex generating section 12, so that there is no gap between the spiral blade 2 and the inner wall of the vortex generating section 12. In other words, when the water flows along the spiral flow channel, it will not overflow from the outer edge of the spiral flow channel, so that the water flow is concentrated in the spiral flow channel, enhancing the effect of the spiral blade 2 on the water flow, increasing the radial kinetic energy of the water when it flows out, and thus improving the spray range.

[0055] In some embodiments, the spiral blade 2 is constructed as a plurality of fan-shaped parts, wherein each fan-shaped part is fan-shaped in cross section. The plurality of fan-shaped parts are spaced apart in the vertical direction. Two adjacent fan-shaped parts are staggered at a certain angle in the circumferential direction, and the two adjacent fan-shaped parts overlap end to end in the circumferential direction. It is understandable that a spiral flow channel can also be formed in this way, which is different from the spiral flow channel constructed by a single spiral blade in the above embodiment. In this embodiment, the spiral flow channel is discontinuous, and when the water flows out at the end of one of the fan-shaped parts, it needs to fall a certain distance in the vertical direction before it contacts the beginning of the adjacent next layer of fan-shaped parts, thereby rotating the flow layer by layer, so that the water flow obtains radial kinetic energy flow, and forms a rotating water curtain.

[0056] refer to Figure 2 In some embodiments, the vortex generating section 12 is cylindrical. The radial dimension of the spiral blade 2 is smaller than the radius of the vortex generating section 12, so that the spiral blade 2 forms a core gap in the axial region of the vortex generating section 12. A portion of the cooling water flows along the spiral flow channel, while another portion of the cooling water falls through the core gap.

[0057] Specifically, the core gap of the spiral flow channel is not filled, but rather retained, allowing the majority of the cooling water to flow along the spiral flow channel, while a smaller portion of the cooling water falls directly along the core gap. This arrangement has the advantage that, as the water flows through the core gap and falls, it is driven by the water flowing along the spiral flow channel, gaining a certain amount of radial kinetic energy and forming a small vortex. Furthermore, this portion of water gains greater vertical kinetic energy than the water flowing along the spiral flow channel, allowing it to more fully utilize gravitational potential energy to impact the water diffuser 3, enhancing the uniformity of water distribution.

[0058] In some embodiments, the thickness of the spiral blade 2 gradually decreases in the direction approaching the core gap.

[0059] It is understandable that the edge of the spiral blade 2 close to the core gap is constructed to be similar to a cutting edge, which can reduce the friction on the water flow falling along the core gap and promote the water flow in the core gap to form a stable vortex.

[0060] In some embodiments, the spiral blade 2 is configured such that the helical line inclination angle of the spiral flow channel is greater than or equal to 10° and less than or equal to 35°.

[0061] Specifically, the helix inclination angle needs to be constructed within a reasonable range to balance the vertical and radial kinetic energy of the water flow. If the inclination angle is too large, it means that the spiral flow path is too steep, which will cause the vertical kinetic energy of the water flow to be too large and the radial kinetic energy to be too small, and it will not be possible to achieve a large spray range. If the inclination angle is too small, the opposite effect will be achieved, resulting in less than optimal water uniformity. Therefore, a helix inclination angle greater than or equal to 10° and less than or equal to 35° can achieve better uniform water distribution and a larger spray range.

[0062] In some embodiments, the spiral blade 2 is constructed so that the helical line angle of the spiral flow channel is greater than or equal to 15° and less than or equal to 30° to achieve better effects.

[0063] In some embodiments, the spiral blade 2 is constructed so that the helical line angle of the spiral flow channel is 25° to achieve better results.

[0064] refer to Figure 4 In some embodiments, the water scattering member 3 includes an inner ring water scattering member and an outer ring water scattering member. The outer ring water scattering member is located radially outside the inner ring water scattering member, and an annular gap is provided between the outer ring water scattering member and the inner ring water scattering member.

[0065] Specifically, the water diffuser 3 is constructed as a double-ring structure, with the inner ring of water diffusers primarily used to disperse the water curtain near the core gap, while the outer ring of water diffusers primarily disperses the more dispersed water curtain at the periphery. Furthermore, as the rotating water curtain flowing from the outlet section 13 moves toward the water diffuser 3, the water curtain corresponding to the annular gap can directly pass through, while the remaining water curtain will collide with the inner and outer rings of water diffusers, causing splashing. This improves water distribution uniformity.

[0066] In some embodiments, the outer ring water spreading member includes a first disk 31 and a plurality of outer diverter teeth 32. The center region of the first disk 31 has a through hole 33 extending therethrough. The inner ring water spreading member is disposed at the through hole 33. The plurality of outer diverter teeth 32 are spaced apart on the surface of the first disk 31.

[0067] Specifically, the height of the first disk 31 gradually decreases from its inner edge (close to the through-hole 33) to its outer edge (away from the through-hole 33). In other words, the surface of the first disk 31 is inclined, which helps water droplets on the surface of the first disk 31 drip down the inclined surface. The outer diverter teeth 32 are evenly spaced in the circumferential direction and can cut the outer water curtain into small droplets, enhancing the uniform water distribution effect.

[0068] refer to Figure 7 In some embodiments, the tooth top of the outer diverter tooth 32 near the through hole 33 has a blade-like structure. The blade-like structure can cut the water curtain to form a plurality of fan-shaped water curtains covering different radii.

[0069] In some embodiments, the outer diverter teeth 32 have a serrated structure at their tips, located away from the through-holes 33. This serrated structure can help break up the water film into small droplets. In particular, in embodiments in which both serrated and blade-like structures are provided, the serrated structure can further divide the fan-shaped water curtain into small droplets, enhancing even water distribution.

[0070] refer to Figure 4 and 5 In some embodiments, the inner ring water spreading member includes a plurality of inner diverter teeth 34 and a second disc 35 , and the plurality of inner diverter teeth 34 are spaced apart on the surface of the second disc 35 .

[0071] The first disc 31, the second disc 35 and the through hole 33 are coaxially arranged, and the size of the second disc 35 is smaller than that of the through hole 33, thereby ensuring that the size of the annular gap formed by the first disc 31 and the second disc 35 is uniform in the entire circumference, thereby ensuring uniform drainage in all directions. Furthermore, the water curtain discharged from the water outlet section 13 can be roughly divided into three parts from the inside to the outside in the radial direction, namely the inner circle water curtain, the middle water curtain and the outer water curtain. The inner circle water curtain roughly corresponds to the position of the second disc 35 on the falling path. This part of the water flow falls on the second disc 35, and a part of it will also be cut and dispersed by multiple internal diverter teeth 34, thereby forming small and dispersed water droplets on the surface of the second disc 35. This part of the water droplets flows into the annular gap in the area between the two adjacent internal diverter teeth 34 and falls from the annular gap. The middle water curtain roughly corresponds to the position of the annular gap on the falling path. This part of the water flow can directly pass through the annular gap and fall. The outer water curtain roughly corresponds to the first disc 31 on the falling path. This part of the water flow falls on the first disc 31 and falls along the inclined surface of the first disc 31. Part of the inner water curtain falls onto the second disc 35 or directly onto the inner diverter teeth 34 and splashes. These splashed water droplets are ejected onto the first disc 31 and flow down along the inclined surface of the first disc 31. The inner and outer water dispersion members cooperate to achieve a better uniform water distribution effect.

[0072] As a viable alternative, in some embodiments, the second disc 35 in the inner ring water-spreading element is replaced by an annular bracket. The ends of the multiple inner diverter teeth 34 near the outer ring water-spreading element are connected and fixed by the annular bracket. Unlike the above-described embodiment, in this embodiment, the bottom of the area between adjacent inner diverter teeth 34 is not filled with structural members, but is instead continuous in the direction of water flow. This allows the inner ring water curtain to be cut and dispersed by the inner diverter teeth 34 and then fall directly through the gaps between adjacent inner diverter teeth 34, rather than being guided into an annular gap and then falling from there. This improves the smoothness of water flow through the inner ring water-spreading element. This solution also increases the drainage volume in the central area and enhances the diversity of the water distribution effects of the sprinkler assembly to meet the needs of different working scenarios.

[0073] refer to Figure 8 In some embodiments, the tip of the inner diverter teeth 34 away from the outer ring water diffuser has a blade-like structure. The blade-like structure can cut the water curtain at the core gap into a plurality of fan-shaped water curtains covering different radii.

[0074] In some embodiments, the inner diverter teeth 34 have a serrated structure at their tips near the outer ring water diffuser. This serrated structure can help break up the water film into small droplets. In particular, in embodiments in which both serrated and blade-like structures are provided, the serrated structure can further cut the fan-shaped water curtain into small droplets, enhancing even water distribution.

[0075] In some embodiments, the number of inner diverter teeth 34 is greater than the number of outer diverter teeth 32 .

[0076] The inner and outer diverter teeth 34 are evenly spaced circumferentially. That is, the circumferential spacing between two adjacent inner diverter teeth 34 is smaller than the circumferential spacing between two adjacent outer diverter teeth 32. The gaps between adjacent diverter teeth form a fan-shaped flow window. For ease of description, the area between two adjacent inner diverter teeth 34 is referred to as the inner circle window, and the area between two adjacent outer diverter teeth 32 is referred to as the outer circle window. The angle of the inner circle window is defined as the circumferential spacing between two adjacent inner diverter teeth 34, while the angle of the outer circle window is defined as the circumferential spacing between two adjacent outer diverter teeth 32. A smaller window angle means a denser arrangement of diverter teeth, smaller gaps between them, and more water flow cuts. However, an overly dense arrangement can cause water droplets generated by the cut water curtain to reaggregate, and a channel must be reserved for the water droplets to drain away. Therefore, a suitable window angle is required to ensure that the water curtain is fully cut and dispersed while also providing sufficient drainage for the generated water droplets.

[0077] Therefore, in order to obtain a better water distribution effect, in some embodiments, the angle of the outer ring window is made greater than the angle of the inner ring window. This is because in addition to allowing the water of the outer ring water diffuser itself to pass through, the outer ring window also allows some water droplets splashed by the inner ring water diffuser to flow and drip along the inclined surface of the first disk 31, thereby ensuring the smooth drainage of the outer ring window.

[0078] In some embodiments, the angle of the inner ring window is configured to be 10° to 20°, and the angle of the outer ring window is configured to be 15° to 20° to obtain a better water distribution effect. Advantageously, the angle of the inner ring window is configured to be 10°, and the angle of the outer ring window is configured to be 17°.

[0079] In some embodiments, the inner diverter teeth 34 are configured to be 8 mm high, and the outer diverter teeth are configured to be 4 mm high. In other words, the inner ring of the water diffuser 3 is higher than the outer ring, allowing water to flow smoothly through the outer ring after passing through the inner ring.

[0080] refer to Figure 2 and 5 In some embodiments, the nozzle assembly further includes support ribs 5. The upper ends of the support ribs 5 are fixedly connected to the outer wall of the housing 1, while the lower portions of the support ribs 5 are fixedly connected to the inner and outer ring water diffusers. This stabilizes the water diffuser 3 as a whole on the underside of the housing 1, reduces shaking caused by water impacting the water diffuser 3, and improves water distribution stability.

[0081] In some embodiments, the support rib 5 is an L-shaped member including a first arm and a second arm. The first arm is fixedly connected to the outer wall of the housing 1. The second arm is connected to the first arm at the outer edge of the first disc 31 and extends toward the center area of ​​the first disc 31. Figure 4 As shown, from a top view, the second arm partially obscures the annular gap between the outer ring water diffuser and the inner ring water diffuser. This arrangement improves the stability of the water diffuser 3. To reduce the second arm's interference with the water flow, the width of the second arm is configured to be less than or equal to 2 mm.

[0082] refer to Figures 4-6 In some embodiments, a buckle 6 is further included. Specifically, the first disc 31 and the second disc 35 are both fixed to the support rib 5 by the buckle 6, thereby further improving the stability of the water spreading member 3.

[0083] refer to Figure 2 In some embodiments, the water outlet section 13 is a cylindrical structure and one end of the water outlet section 13 close to the water diffuser 3 is expanded.

[0084] With this arrangement, since the water discharged from the spiral flow channel has radial kinetic energy, the water flow can diffuse along the inner wall of the flared part, and the Bernoulli effect is used to convert centrifugal force into radial kinetic energy, thereby promoting the formation of a rotating water curtain.

[0085] refer to Figure 2 In some embodiments, the diameter of the water outlet section 13 first decreases and then increases from one end of the water outlet section 13 away from the water diffuser 3 to the other end of the water outlet section 13 .

[0086] In this embodiment, the outlet section includes a gradually contracting section and a gradually expanding section. The upper end of the gradually contracting section is connected to the vortex generating section 12, and the lower end of the gradually contracting section is connected to the upper end of the gradually expanding section. The diameter of the gradually contracting section gradually decreases from the upper end to the lower end of the gradually contracting section, and gradually increases from the upper end to the lower end of the gradually expanding section.

[0087] The water flow discharged from the spiral flow channel is first affected by the tapering section. As the diameter of the tapering section gradually decreases, the water flow velocity increases and the centrifugal force of the rotating water curtain is enhanced when it flows along the inner wall of the tapering section. Then, in the expanding section, based on the Bernoulli effect, the centrifugal force is converted into kinetic energy of radial diffusion, so that the water flow forms a uniformly rotating water curtain.

[0088] In order to obtain a better diffusion effect, in some embodiments, the contraction ratio of the tapered section (ie, the ratio of the diameter of the lower end of the tapered section to the diameter of the upper end of the tapered section) is 1:3.

[0089] To achieve a better diffusion effect, in some embodiments, the diverging section has a diverging angle of 60°. The diverging angle of the diverging section is defined as the angle between a tangent line at the lower end of the diverging section and the end surface at which the lower end of the diverging section is located. When the nozzle assembly is arranged vertically, that is, the axis of the vortex generating section 12 is parallel to the direction of gravity, the end surface at which the lower end of the diverging section is located is a horizontal plane.

[0090] refer to Figures 1-2 In some embodiments, the shell 1 includes a plurality of strip holes provided in the water inlet section 11 , and the plurality of strip holes penetrate the shell wall of the water inlet section 11 .

[0091] Specifically, the nozzle assembly is designed to be installed in conjunction with a water distribution tray. The water distribution tray is generally a box-shaped structure with a mounting hole at its bottom. The diameter of the mounting hole matches the size of the water inlet section 11. The water inlet section 11 of the housing 1 is located within the water distribution tray, while the vortex generating section 12 and the water outlet section 13 are located outside the water distribution tray. When the cooling water in the water distribution tray accumulates to a height that reaches the position of the strip holes, the cooling water can enter the water inlet section 11 through the strip holes, achieving water inflow.

[0092] refer to Figure 3 In some embodiments, the water inlet section 11 is a cylindrical structure. The plurality of holes include a plurality of first holes 14 extending along the axis of the water inlet section 11 and a plurality of second holes 15 extending along the circumference of the water inlet section 11. The first holes 14 and the second holes 15 are spaced apart from each other along the axis of the water inlet section 11.

[0093] Specifically, the axial direction of the water inlet section 11 is parallel to the vertical direction, and multiple first holes 14 are evenly spaced in the circumferential direction to increase the water inlet area so that water can enter multiple circumferential positions of the water inlet section 11, and the first holes 14 and the second holes 15 are spaced apart in the vertical direction. When the water level in the water distribution tray is different, the number of holes used for water inlet is also different, thereby better realizing the flow control of the nozzle.

[0094] In some embodiments, multiple second holes 15 are positioned at different vertical heights to allow water to enter at varying flow rates. For example, when the water level in the water distribution tray is low, water can only enter through the lower second holes 15, resulting in a lower flow rate from the sprinkler. When the water level in the water distribution tray is high, water can enter through the second holes 15 at all heights, thereby increasing the sprinkler flow rate.

[0095] In some embodiments, the first holes 14 are configured to be higher than the second holes 15 to achieve a better flow control effect.

[0096] refer to Figures 1 to 3 In some embodiments, the nozzle device further includes a chuck 4. The chuck 4 is arranged on the outer wall of the shell 1 and is located at the connection position between the water inlet section 11 and the vortex generating section 12. The chuck 4 is fixedly connected to the shell 1, and the size of the chuck 4 is larger than the diameter of the mounting hole at the bottom of the water distribution tray. When the nozzle device is installed on the water distribution tray, the chuck 4 is located inside the water distribution tray. The chuck 4 can better block the mounting hole, reduce the water in the water distribution tray from flowing out of the gap in the mounting hole, and thereby enable the water in the water distribution tray to be discharged only through the strip holes on the water inlet section 11. The chuck 4 also plays a role in supporting and stabilizing the shell 1, thereby improving the stability of the nozzle device installed on the water distribution tray.

[0097] Finally, it is worth emphasizing that the nozzle devices provided in each embodiment of the present application do not have any rotating parts, and can still achieve stable large-scale spraying, thereby increasing the service life of the nozzle and reducing maintenance costs.

[0098] The present application also provides a cooling tower comprising the nozzle device described above. Based on the cooling tower, a large-scale and uniform spraying effect on the filler can be improved, thereby improving the performance of the cooling tower.

[0099] The above is a detailed introduction to the air duct assembly, air conditioner indoor unit, and air conditioner unit provided by the present disclosure. Specific embodiments are used herein to illustrate the principles and implementation methods of the present disclosure. The description of the above embodiments is only intended to help understand the method and core concept of the present disclosure. It should be noted that, for those skilled in the art, various improvements and modifications may be made to the present disclosure without departing from the principles of the present disclosure, and such improvements and modifications also fall within the scope of protection of the claims of the present disclosure.

Claims

1. A nozzle device, characterized in that: include: The housing (1) comprises a water inlet section (11) for water inlet, a vortex generating section (12) for generating a vortex, and a water outlet section (13) for discharging water, which are sequentially arranged in a height direction; A spiral blade (2) is fixedly arranged on the inner wall of the vortex generating section (12), the spiral blade (2) forming a spiral flow channel in the vortex generating section (12), and the spiral blade (2) is used to make the cooling water entering from the water inlet section (11) flow along the spiral flow channel to form a vortex; as well as A water scattering member (3) is arranged on the lower side of the housing (1), and the water scattering member (3) is used to disperse the cooling water discharged from the water outlet section (13).

2. The nozzle device according to claim 1, characterized in that The outer edges of the spiral blades (2) are connected to the inner wall of the vortex generating section (12).

3. The nozzle device according to claim 1, characterized in that The vortex generating section (12) is a cylindrical structure, and the radial dimension of the spiral blade (2) in the vortex generating section (12) is smaller than the radius of the vortex generating section (12) so that the spiral blade (2) forms a core gap in the axial region of the vortex generating section (12), a portion of the cooling water flows along the spiral flow channel, and another portion of the cooling water falls through the core gap.

4. The nozzle device according to claim 3, characterized in that The thickness of the spiral blade (2) gradually decreases in a direction approaching the core gap.

5. The nozzle device according to claim 1, characterized in that: The spiral blade (2) is constructed so that the helical line inclination angle of the spiral flow channel is greater than or equal to 10° and less than or equal to 35°.

6. The nozzle device according to claim 1, characterized in that The water scattering member (3) comprises an inner ring water scattering member and an outer ring water scattering member, wherein the outer ring water scattering member is located radially outside the inner ring water scattering member, and an annular gap is provided between the outer ring water scattering member and the inner ring water scattering member.

7. The nozzle device according to claim 6, characterized in that: The outer ring water spreading member comprises a first disc (31) and a plurality of outer diverter teeth (32); a central area of ​​the first disc (31) has a through hole (33) extending therethrough; the inner ring water spreading member is arranged at the through hole (33); and the plurality of outer diverter teeth (32) are distributed at intervals on the surface of the first disc (31).

8. The nozzle device according to claim 7, characterized in that: The tooth top of the portion of the outer diverter tooth (32) away from the through hole (33) has a sawtooth structure; and / or the tooth top of the portion of the outer diverter tooth (32) close to the through hole (33) has a blade-like structure.

9. The nozzle device according to claim 6, characterized in that: The inner ring water spreading member comprises a plurality of inner diverter teeth (34) and a second disc (35), wherein the plurality of inner diverter teeth (34) are distributed at intervals on the surface of the second disc (35).

10. The nozzle device according to claim 9, characterized in that: The tooth top of the inner diverter tooth (34) close to the outer ring water diffuser has a sawtooth structure; and / or the tooth top of the inner diverter tooth (34) away from the outer ring water diffuser has a blade-like structure.

11. The nozzle device according to claim 6, characterized in that: The inner ring water diffuser and the outer ring water diffuser each have a plurality of tooth-like structures spaced apart in the circumferential direction. The number of the tooth-like structures of the inner ring water diffuser is greater than the number of the tooth-like structures of the outer ring water diffuser.

12. The nozzle device according to any one of claims 1 to 11, characterized in that: The water outlet section (13) is a cylindrical structure, and one end of the water outlet section (13) close to the water scattering member (3) is expanded.

13. The nozzle device according to claim 2, characterized in that: From one end of the water outlet section (13) away from the water dispersion member (3) to the other end of the water outlet section (13), the diameter of the water outlet section (13) first decreases and then increases.

14. The nozzle device according to any one of claims 1 to 11, characterized in that: The shell (1) comprises a plurality of strip holes arranged in the water inlet section (11), and the plurality of strip holes penetrate the shell wall of the water inlet section (11).

15. The nozzle device according to claim 14, characterized in that: The water inlet section (11) is a cylindrical structure, and the plurality of strip holes include a plurality of first strip holes (14) extending along the axial direction of the water inlet section (11) and a plurality of second strip holes (15) extending along the circumferential direction of the water inlet section (11), wherein the first strip holes (14) and the second strip holes (15) are spaced apart in the axial direction of the water inlet section (11).

16. A cooling tower, characterized in that: The device comprises a nozzle device as claimed in any one of claims 1 to 15.

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