Wet curtain liquid distributor and evaporative cooler containing the same

Abstract

The present invention proposes a wet curtain liquid distributor and an evaporative cooler including the same, wherein the wet curtain liquid distributor comprises an inlet pipe, a liquid distribution trough, and a water outlet located at the bottom of the liquid distribution trough, wherein a diverter plate is provided in the liquid distribution trough along the length direction of the liquid distribution trough, and the liquid distribution trough is divided into an upper first-level liquid distribution trough and a lower second-level liquid distribution trough by the diverter plate. When the water injected into the first-level liquid distribution trough is full, it will flow through the diverter plate and overflow into the second-level liquid distribution trough. The wet curtain liquid distributor of the present invention effectively improves the problem of uneven liquid distribution in existing liquid distributor solutions when the horizontal span is large, and can improve the phenomena of water film clogging of the liquid distribution holes due to liquid surface tension, liquid surface adhesion, etc., thereby improving the overall water distribution uniformity of the liquid distributor, thereby improving the overall humidification capacity of the humidification system.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and in particular to a wet curtain liquid distributor. Background Art

[0002] Humidity, like temperature, is a crucial factor in determining the air environment and is crucial to people's quality of life, work environment, and industrial production. Wet-film evaporative humidification, a key operating principle of mainstream humidifiers such as cooling fans, evaporative humidifiers, and humidifying heaters, involves evenly spraying water onto a wet curtain through a liquid distributor. The rotating fan impeller creates negative pressure at the air inlet, exchanging moisture in the wet curtain with dry air. The moisture evaporates into high-humidity air, achieving humidification and cooling.

[0003] The wet curtain is the main component of the wet film evaporation humidification system. The design of the liquid distribution system directly affects the uniformity of the liquid flow on the surface of the wet curtain, thereby affecting the effective evaporation area and evaporation amount of the wet curtain, and further affecting the humidification amount of the humidification system. The liquid distribution system in the existing technology uses a circulating water pump and a water pipe to continuously add water to the liquid distribution tank. The water flows out from the drain hole in the liquid distribution tank and drips onto the wet curtain for liquid distribution.

[0004] In actual design and development, it is often necessary to distribute liquid to wet curtains with a larger horizontal span due to product shape and size limitations. This usually requires increasing the number of holes in the liquid distributor in the horizontal direction. However, since the water pressure and flow at the proximal and distal ends of the water inlet of the open liquid distributor cannot be guaranteed to be consistent, and the fluid itself has tension, the liquid distribution holes near the water inlet are more likely to let water in, and the liquid distribution holes at the distal end are more likely to form water films and cause blockages, resulting in poor overall liquid distribution uniformity of the liquid distributor, seriously affecting the liquid flow uniformity on the surface of the wet curtain, thereby affecting the humidification performance of the evaporative humidification system. Summary of the Invention

[0005] The present invention provides an open trough type liquid distributor, which solves the problems of uneven water discharge in the liquid distribution holes of the existing liquid distributor, the phenomenon of the liquid distribution holes of the existing liquid distributor being blocked due to the surface tension of the liquid, and the phenomenon of liquid surface adhesion on the outlet surface of the liquid distribution holes of the existing liquid distributor.

[0006] The first aspect of the present invention provides a wet curtain liquid distributor, comprising an inlet pipe, a liquid distribution trough and a water outlet hole at the bottom of the liquid distribution trough, wherein a diverter plate is arranged in the liquid distribution trough along the length direction of the liquid distribution trough, and the liquid distribution trough is divided into an upper first-level liquid distribution trough and a lower second-level liquid distribution trough by the diverter plate. When the water injected into the first-level liquid distribution trough is full, it will flow through the diverter plate and overflow into the second-level liquid distribution trough.

[0007] In one embodiment, the inlet pipe with an inner diameter of D is arranged above the first-level liquid distribution trough, and the lower pipe mouth of the inlet pipe extends to the open interior of the liquid distribution trough. A rectifier for pressure relief and diversion is provided in the first-level liquid distribution trough directly below the inlet pipe.

[0008] In one embodiment, the rectifier is formed into two arc surfaces in its axial direction, the diameter of the first arc surface is D1, the diameter of the second arc surface is D2, and 0 <D1<D<D2。

[0009] In one embodiment, the rectifier is provided with a plurality of rectifier plates, and the rectifier plates are distributed in a circumferential direction starting from the middle of the rectifier.

[0010] In one embodiment, the bottom surface of the first-level liquid distribution tank is provided with a certain downward slope in the direction extending from the middle position to both sides, and the slope surface forms an angle α with the horizontal plane.

[0011] In one embodiment, the angle α between the slope surface and the horizontal plane is in the range of 0<α<5°.

[0012] In one embodiment, the radial width of the first-level liquid distribution tank at the water discharge position is L, and the radial width of the two sides extending direction is L1, then 1 / 3 <L1 / L<1。

[0013] In one embodiment, the water outlet holes are arranged at the bottom of the secondary liquid distribution tank, wherein the distance between adjacent water outlet holes is set to a, and a≥10 mm.

[0014] In one embodiment, an inverted triangular overflow port is provided on the diversion plate, and a vertical partition is provided between each two adjacent inverted triangular overflow ports. The upper edge of the partition is flush with the upper edge of the diversion plate, and the lower edge of the partition is provided at the bottom of the secondary liquid distribution tank.

[0015] In one embodiment, the overflow port is in the shape of an inverted triangle, a U-shape, a trapezoid or a square.

[0016] In one embodiment, the relative height of the lower vertex O of the overflow outlet from the bottom surface of the first-level liquid distribution tank is h, and according to the actual drainage situation, the relative height of the lower vertex O of the overflow outlet from the bottom surface of the first-level liquid distribution tank is adjusted to h1, and |h-h1|≤4mm.

[0017] In one embodiment, the relative distance between the lower vertex O of the overflow outlet and the upper edge of the diverter plate is H, and H is ≥ 3 mm.

[0018] In one embodiment, an overflow column is provided upward from the bottom of the secondary liquid distribution tank, an overflow hole is provided inside the overflow column, and the upper end surface of the overflow column is lower than the overall side wall height of the liquid distribution tank and higher than the upper end surface of the diverter plate.

[0019] In one embodiment, the overflow ports correspond to the water outlet holes one by one, or a single overflow port corresponds to multiple water outlet holes.

[0020] In one embodiment, the water outlet hole at the bottom of the secondary liquid distribution tank is a straight hole structure with consistent upper and lower dimensions, or a conical structure with a cross section that converges from top to bottom, and its taper angle β is 0°≤β≤15°.

[0021] In one embodiment, the minimum side length of the cross section of the water outlet at the water outlet is c, and c≥1mm.

[0022] In one embodiment, the water outlet hole extends out of the bottom surface of the liquid distribution tank, with an extension length b≥1 mm, and the lower surface of the water outlet hole is a beveled structure, forming a relative angle θ with the bottom surface of the liquid distribution tank.

[0023] A second aspect of the present invention provides an evaporative cooling device comprising the wet curtain liquid distributor described above.

[0024] Compared with the existing technology, the wet curtain liquid distributor of the present invention effectively improves the problem of uneven water distribution in the existing liquid distributor solution when the horizontal span is large, and can improve the phenomena of water film clogging of the liquid distribution holes and liquid surface adhesion caused by liquid surface tension, thereby improving the overall water distribution uniformity of the liquid distributor, thereby improving the overall humidification capacity of the humidification system.

[0025] The above-mentioned technical features can be combined in various technically feasible ways to produce new embodiments, as long as the purpose of the present invention can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be described in more detail below based on non-limiting examples and with reference to the accompanying drawings, in which:

[0027] Figure 1 Shows an overall schematic diagram of the wet curtain liquid distributor according to the present invention;

[0028] Figure 2 Shows Figure 1 The top view of the wet curtain liquid distributor;

[0029] Figure 3 Shows Figure 1 A schematic diagram of the front cross-sectional structure of the first-level liquid distribution tank of the wet curtain liquid distributor;

[0030] Figure 4 Shows Figure 1 A schematic diagram of the front cross-sectional structure of the secondary liquid distribution tank of the wet curtain liquid distributor;

[0031] Figure 5 Shows Figure 4Schematic diagram of the side cross-sectional structure at the middle BB;

[0032] Figure 6 Shows Figure 4 Schematic diagram of the side cross-sectional structure at AA in the middle;

[0033] Figure 7 A simulation comparison diagram of the wet curtain liquid distributor solution of the present invention is shown.

[0034] In the drawings, like components are designated by like reference numerals, but the drawings are not necessarily drawn to scale.

[0035] Wherein, the accompanying drawings are marked as follows:

[0036] 1. Inflow pipe; 2. Rectifier; 21. First arc surface of rectifier; 22. Second arc surface of rectifier; 23. Rectifier plate; 3. Liquid distribution trough; 31. First-stage liquid distribution trough; 311. Liquid distribution bottom surface of first-stage liquid distribution trough; 32. Second-stage liquid distribution trough; 322. Partition; 4. Diverter plate; 41. Overflow port; 5. Overflow column; 6. Water outlet. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, as long as no conflict exists, the various embodiments of the present invention and the various features in the embodiments can be combined with each other, and the resulting technical solutions are all within the scope of protection of the present invention.

[0038] Parts not described in the present invention can be implemented by adopting or drawing on existing technologies.

[0039] like Figure 1 As shown, the first aspect of the present invention provides a wet curtain liquid distributor, comprising an inlet pipe 1, a liquid distribution tank 3 and a water outlet 6 located at the bottom of the liquid distribution tank 3, wherein a diverter plate 4 is provided in the liquid distribution tank 3 along the length direction of the liquid distribution tank 3, and the liquid distribution tank 3 is divided into an upper first-level liquid distribution tank 31 and a lower second-level liquid distribution tank 32 by the diverter plate 4. When the water in the first-level liquid distribution tank 31 is full, it will flow through the diverter plate 4 and overflow into the second-level liquid distribution tank 32.

[0040] The wet curtain liquid distributor of the present invention sets a two-level water diversion channel in the liquid distribution trough, utilizes the height of the diversion plate to store water in the first-level liquid distribution trough, and converts the kinetic energy of the uneven water distribution into water storage potential energy. Then, when the water storage height exceeds the diversion plate, the potential energy is converted into kinetic energy with relatively uniform lateral distribution and overflows into the second-level liquid distribution trough, thereby improving the uniformity of the initial water discharge in the second-level liquid distribution trough. It can effectively improve the problem of uneven liquid discharge in the existing liquid distributor solution when the lateral span is large, and can improve the phenomena of water film clogging and liquid surface adhesion in the liquid distribution holes due to liquid surface tension, thereby improving the overall water distribution uniformity of the liquid distributor, thereby improving the overall humidification capacity of the humidification system.

[0041] In a preferred embodiment, as Figure 1 and Figure 2 shown, the upper surface of the liquid distribution tank 3 is an open structure. The inflow pipe 1 with an inner diameter of D is arranged above the primary liquid distribution tank 31. The lower pipe opening of the inflow pipe extends into the open interior of the liquid distribution tank 3. A rectifier 2 for pressure relief and flow diversion is arranged directly below the inflow pipe 1 in the primary liquid distribution tank 31. The water flowing out from the inflow pipe 1 first flows through the rectifier 2 for pressure relief and flow diversion, and then flows into the interior of the primary liquid distribution tank 31.

[0042] In other embodiments, the upper surface of the liquid distribution tank 3 may also be a non-open structure.

[0043] In a more preferred embodiment, as Figure 2 and Figure 3 shown, the rectifier 2 is formed into two arc surfaces in its axial direction. The diameter of the first arc surface is D1, the diameter of the second arc surface is D2, and 0 < D1 < D < D2. Such a setting can reduce the local water pressure at the water inlet position, prevent the direct impact of the inflow at the water inlet on the bottom surface of the liquid distribution tank from causing splashing, and at the same time, the two arc surfaces can enhance the wall attachment effect of the flow field at the water inlet, thereby delaying the inflow stroke. After two-stage unloading, the inflow velocity can be effectively reduced to achieve the purpose of rectification.

[0044] In a more preferred embodiment, the rectifier 2 is provided with a plurality of rectifying plates 23, and the rectifying plates 23 are distributed in a circumferential direction along the circumference of the rectifier 2. By arranging a plurality of circumferentially distributed rectifying plates, the inflow can be drained in multiple directions around, thereby further reducing the local water pressure at the water inlet position and improving the rectifying effect of the rectifier.

[0045] In a preferred embodiment, the bottom surface of the primary liquid distribution tank 31 is provided with a certain downward slope in the direction extending from the middle position to both sides. The slope surface forms an angle α with the horizontal plane. Preferably, 0 < α < 5°. More preferably, the liquid distribution bottom surface 311 of the primary liquid distribution tank can be set as an inclined plane or preferably set as an arc transition surface.

[0046] By setting the primary liquid distribution tank as an inclined plane structure, the liquid distribution uniformity of the primary liquid distribution tank can be improved. The liquid flow momentum and velocity are the largest at the water inlet position. During the process of distributing liquid to both sides, the velocity decreases due to momentum loss, which will cause the liquid level at the position directly opposite the water inlet to be higher than the liquid levels on both sides, and overflow to the lower liquid tank in advance, affecting the final liquid distribution effect. The inclined plane structure can utilize the potential energy generated by the liquid level difference during the two-side diversion process to increase the liquid distribution kinetic energy and improve the flow velocity of the water distributed to both sides, so that the liquid levels in the middle and on both sides of the primary liquid distribution tank are kept consistent, thereby improving the liquid distribution uniformity.

[0047] As Figure 2As shown, the radial width of the water outlet position of the primary liquid distribution tank 31 is L, and the radial width in the extending directions on both sides is L1, and 1 / 3 < L1 / L < 1. In this way, on the one hand, the growth rate of the liquid height at the water outlet position can be delayed. The width of the water outlet position is greater than the liquid distribution widths on both sides, which can increase the water pressure for liquid distribution to both sides, thereby increasing the flow rate of liquid distribution to both sides and further improving the liquid distribution uniformity of the primary liquid distribution tank; on the other hand, reducing the liquid distribution widths on both sides can, to a certain extent, reduce the volume of the primary liquid distribution tank, so that a circulating water pump with a smaller flow rate can be selected, saving the product development cost.

[0048] In an embodiment of the present invention, the water outlet holes 6 are arranged at the bottom of the secondary liquid distribution tank 32, and the distance between adjacent water outlet holes 6 is set as a, and a ≥ 10 mm. The distance between adjacent water outlet holes depends on the wet curtain corrugation density distribution on the one hand. Corresponding to the wet curtain corrugation distribution distance can achieve the best humidification effect. On the other hand, the distance between adjacent water outlet holes should not be too small. Because the relative flow rate at the water outlet position is relatively large, the pressure at this position is relatively small, and there is tension between liquids. If the distance is too small, it will be affected by the pressure and tension on both sides, and liquid surface adhesion will occur at the water outlet position, thus affecting the local water outlet uniformity.

[0049] In a preferred embodiment, as Figure 4 shown, an inverted triangular overflow port 41 is arranged on the flow dividing plate 4, and a vertically arranged partition plate 322 is arranged between every two adjacent inverted triangular overflow ports 41. The height of the upper edge of the partition plate 322 is flush with the upper edge of the flow dividing plate 4, and the lower edge is arranged at the bottom of the secondary liquid distribution tank 32. The overflow port 41 and the water outlet hole 6 can be in one-to-one correspondence or a single overflow port corresponds to multiple water outlet holes.

[0050] Due to the influence of the self-tension of water, it is easy to form liquid film adhesion. Without an overflow port structure, the flow at each position of the water outlet of the flow dividing plate is affected by wall adhesion, and it is impossible to ensure the flow rate balance at each water outlet position; the overflow port of the flow dividing plate preferably has a triangular structure to inhibit the generation of liquid film by liquid surface tension, but it is not limited to the triangular scheme. Similar structures such as U-shaped, trapezoidal, and square can also be selected; in addition, the effective range of a single overflow port of the flow dividing plate does not limit to one water outlet, and the liquid distribution effect will gradually deteriorate as the number of water outlet holes increases.

[0051] In a preferred embodiment, as Figure 4 and Figure 6 shown, the relative height of the lower vertex O of the overflow port 41 from the liquid distribution bottom surface 311 of the primary liquid distribution tank is h, and according to the actual water outlet situation, the relative height of the lower vertex O of the overflow port 41 from the liquid distribution bottom surface of the primary liquid distribution tank can be adjusted to h1, and |h - h1| ≤ 4 mm. This shows that the relative height of each overflow port is not fixed and can be finely adjusted for each position according to the actual water outlet situation. However, based on the high sensitivity of the water path, the adjustment size should not be too large. Therefore, this adjustment range is limited, and |h - h1| ≤ 4 mm is the best.

[0052] In a more preferred embodiment, the overflow port 41, preferably a triangular overflow port, has a relative distance H from the upper edge of the diverter plate 4, where H is ≥ 3 mm. The relative distance from the overflow port to the upper edge of the diverter plate, i.e., the longitudinal upper span of the overflow port, is determined by the inherent tension and wall-attached flow characteristics of water. If the overflow port height is too low, adjacent locations may adhere to each other and flow out, thereby reducing the flow rate at individual holes.

[0053] like Figure 4 As shown, an overflow column 5 is provided at the bottom of the secondary liquid distribution trough 32, and an overflow hole is provided inside the overflow column 5. The upper end surface of the overflow column 5 is lower than the overall side wall height of the liquid distribution trough 3 and higher than the upper end surface of the diverter plate 4, thereby preventing the overflow phenomenon caused by the liquid level exceeding the upper edge of the side wall of the liquid distribution trough when the water flow rate is too large.

[0054] In a preferred embodiment, Figure 4 and Figure 5 As shown, the outlet hole 6 at the bottom of the secondary liquid distribution tank 32 can be a straight hole with consistent dimensions from top to bottom, or a tapered structure with a cross-section that tapers from top to bottom. The taper angle β of the tapered structure is 0°≤β≤15°. A straight hole structure can also achieve a water drainage effect, but a tapered hole is more conducive to water drainage, thereby avoiding tension-induced clogging.

[0055] More preferably, the minimum side length of the cross section of the outlet of the water outlet 6 is c, and c ≥ 1 mm. If the size is too small, it will be easier for a liquid film to form at the outlet hole and cause clogging, so c ≥ 1 mm is preferably used.

[0056] More preferably, the outlet hole 6 extends beyond the bottom surface of the liquid distribution trough 3 by a length b ≥ 1 mm, and the lower surface of the outlet hole is beveled, forming a relative angle θ with the bottom surface of the liquid distribution trough. Because fluids adhere to the wall, if the hole is flush with the bottom surface, water can easily flow to both sides along the bottom surface of the liquid distribution trough, causing adhesion with adjacent holes and resulting in uneven localized water distribution. Furthermore, beveling the outlet enhances the tendency of the water to flow vertically downward along the long wall of the bevel, effectively improving uneven water distribution caused by tension blockage and liquid surface adhesion.

[0057] like Figure 7 As shown, compared with the liquid distributor in the prior art, the water uniformity of the wet curtain liquid distributor of the present application is significantly improved.

[0058] A second aspect of the present invention provides an evaporative cooling device comprising the aforementioned wet curtain liquid distributor, and thus also possesses all the advantages or beneficial effects of the aforementioned wet curtain liquid distributor.

[0059] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the ordinary meaning understood by persons of ordinary skill in the art to which the present invention belongs. The terms "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. In the description of the present invention, the directions or positional relationships indicated by the terms "upper", "lower", "vertical", "top", "bottom", "inside", "outside" and the like are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly. Therefore, they should not be understood as limiting the present invention.

[0060] At this point, those skilled in the art will recognize that although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A wet curtain liquid distributor, characterized in that: The wet curtain liquid distributor includes an inlet pipe, a liquid distribution trough and a water outlet hole at the bottom of the liquid distribution trough, wherein a diverter plate is arranged in the liquid distribution trough along the length direction of the liquid distribution trough, and the liquid distribution trough is divided into an upper first-level liquid distribution trough and a lower second-level liquid distribution trough by the diverter plate. After the water injected into the first-level liquid distribution trough is full, it will flow through the diverter plate and overflow into the second-level liquid distribution trough. An overflow port is arranged on the diverter plate, and a vertically arranged partition is arranged between each two adjacent overflow ports. The upper edge of the partition is flush with the upper edge of the diverter plate, and the lower edge of the partition is arranged at the bottom of the second-level liquid distribution trough.

2. The wet curtain liquid distributor according to claim 1, characterized in that: The inlet pipe with an inner diameter of D is arranged above the first-level liquid distribution trough, and the lower pipe mouth of the inlet pipe extends to the open interior of the liquid distribution trough. A rectifier for pressure relief and diversion is arranged in the first-level liquid distribution trough directly below the inlet pipe.

3. The wet curtain liquid distributor according to claim 2, characterized in that: The rectifier is formed into two arc surfaces in its axial direction, the diameter of the first arc surface is D1, the diameter of the second arc surface is D2, and 0 <D1<D<D2。 4. The wet curtain liquid distributor according to claim 2 or 3, characterized in that: The rectifier is provided with a plurality of rectifier plates, and the rectifier plates are distributed in a circumferential direction along the circumference of the rectifier.

5. The wet curtain liquid distributor according to claim 1, characterized in that: The bottom surface of the first-level liquid distribution trough is provided with a downward extending slope surface extending from the middle position to both sides, and the slope surface forms an angle α with the horizontal plane. The bottom surface of the first-level liquid distribution trough is an inclined plane or an arc transition surface.

6. The wet curtain liquid distributor according to claim 5, characterized in that: The included angle α between the slope surface and the horizontal plane is in the range of 0<α<5°.

7. The wet curtain liquid distributor according to claim 1, characterized in that: The radial width of the first-level liquid distribution tank at the water discharge position is L, and the radial width of the two sides extending direction is L1, then 1 / 3 <L1 / L<1。 8. The wet curtain liquid distributor according to claim 1, characterized in that: The water outlet holes are arranged at the bottom of the secondary liquid distribution tank, wherein the distance between adjacent water outlet holes is set to a, and a≥10mm.

9. The wet curtain liquid distributor according to claim 1, characterized in that: The overflow port is in the shape of an inverted triangle, a U-shape, a trapezoid or a square.

10. The wet curtain liquid distributor according to claim 1, characterized in that: The relative height between the lower vertex O of the overflow outlet and the bottom surface of the first-level liquid distribution tank is h, and according to the actual water discharge situation, the relative height between the lower vertex O of the overflow outlet and the bottom surface of the first-level liquid distribution tank is adjusted to h1, and |h-h1|≤4mm.

11. The wet curtain liquid distributor according to claim 10, characterized in that: The relative distance between the lower vertex O of the overflow outlet and the upper edge of the diverter plate is H, and H is ≥ 3 mm.

12. The wet curtain liquid distributor according to claim 1, characterized in that: An overflow column is further provided upward from the bottom of the secondary liquid distribution tank, an overflow hole is provided inside the overflow column, and the upper end surface of the overflow column is lower than the overall side wall height of the liquid distribution tank and higher than the upper end surface of the diverter plate.

13. The wet curtain liquid distributor according to claim 1, characterized in that: The overflow ports correspond to the water outlet holes one by one, or a single overflow port corresponds to multiple water outlet holes.

14. The wet curtain liquid distributor according to claim 8, characterized in that: The water outlet hole at the bottom of the secondary liquid distribution tank is a straight hole structure with the same size from top to bottom, or a conical structure with a cross section that is inward from top to bottom, and its taper angle β is 0°≤β≤15°.

15. The wet curtain liquid distributor according to claim 14, characterized in that: The minimum side length of the cross section of the water outlet is c, and c is ≥ 1 mm.

16. The wet curtain liquid distributor according to claim 8, characterized in that: The water outlet hole extends out of the bottom surface of the liquid distribution tank, with a length of b≥1mm, and the lower surface of the water outlet hole is a beveled structure, and the beveled surface forms a relative angle θ with the bottom surface of the liquid distribution tank.

17. An evaporative cooling device, characterized in that: The wet curtain liquid dispensing device comprises the wet curtain liquid dispensing device according to any one of claims 1 to 16.

Images