JP2001121041A - Watering nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water spray nozzle capable of performing good water spray with high uniformity on each ventilation flow path between fillers, thereby avoiding performance deterioration of a cooling water tower due to uneven water spray. . SOLUTION: Regarding a watering nozzle 22 used for a cooling water tower,
A first dispersing plate 31 having a substantially flat dispersing surface 30 on its upper surface; a first dispersing plate 31 for dispersing the hot water 8 dropped from the nozzle holes 23 of the nozzle head 24;
A pair of stoppers 33 disposed opposite to each other in a direction perpendicular to the direction in which the filler is arranged, first guides 34 formed at both ends of the opposed inclined surfaces 32 of the stoppers 33, and a dispersion surface 35 on the upper surface. A second dispersion plate 37 having an orifice 36 having an opening area smaller than that of the nozzle hole 23 at the center thereof.
And second guides 38 erected on both ends of the dispersion surface 35 of the plate 37.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water spray nozzle for use in a hot water tank of a cooling water tower.

[0002]

2. Description of the Related Art Conventionally, hot water is sprinkled from a plurality of water outlets opened on the lower surface of a hot water tank to a filler immediately below the hot water tank, and the outside air is brought into direct contact with hot water flowing down the surface of the filler to discharge the hot water. A cooling water tower that is cooled is known. In this type of cooling water tower, the outside air that has been directly in contact with hot water and exchanged heat with a filler is heated to a temperature of about 100 at the same time as the temperature is raised.
% Of the humid air, and if this humid air is directly discharged to the outside from the outlet at the top of the cooling water tower, white smoke may be generated when the outside air temperature is low in winter or the like.

[0003] The generation of such white smoke gives misunderstanding to neighboring residents and the like as if they are polluting the outside air.
In addition, there is a problem that white smoke falls on the ground and rises in the surroundings like fog, thereby causing poor visibility. For example, there is an increasing demand for minimizing the generation of white smoke.

For this reason, in recent years, as shown in FIG. 11, a large number of fillers 1 having irregularities on the surface of a synthetic resin sheet made of polyvinyl chloride or the like are provided in parallel in a standing manner so that the outside air is interposed between the sheets. The structure which secured the ventilation channel 2 of
Moreover, the wet / dry switching area 4 is separated from the constant humidity area 3 and the wet / dry switching area 4 which are separated from the outside air ventilation flow path 2 and alternately arranged. In order to obtain the water / dry switching area 4, the water spray pipes 6 and the like are arranged on the lower surface of the hot water tank 5 corresponding to the respective rows of the wet / dry switching area 4, while the water spray port 7 of the hot water tank 5 is always communicated only with the wet area 3. Cooling towers have been proposed.

That is, according to such a cooling water tower, when there is no risk of generating white smoke (when the outside air temperature is high), the hot water 8 is supplied into the hot water tank 5 and the water pipes 6 are On the other hand, when the hot water 8 is substantially uniformly distributed and supplied, the hot water 8 is sprinkled from the water spouting port 7 on the lower surface of the hot water tank 5 to the constantly wet region 3 of the filler 1 and the water sprinkling hole 9 on the lower surface of each water sprinkling pipe 6. Filling material 1
Since the hot water 8 is also sprayed on the wet / dry switching area 4, the water is constantly sprayed on both the wet area 3 and the wet / dry switching area 4, so that the hot water 8 by the outside air Direct cooling is effective.

On the other hand, when there is a risk of generating white smoke (when the outside air temperature is low), when the supply of the hot water 8 to each water sprinkling pipe 6 is cut off, in the constant wet area 3 where the hot water 8 is sprinkled. Direct cooling of the hot water 8 by the outside air and dry heating of the outside air flowing through the wet / dry switching area 4 where the hot water 8 is not sprayed are simultaneously performed, and the wet air generated by the direct cooling is replaced with the dry air generated by the dry heating. Are mixed to prevent generation of white smoke.

Here, the constant wet region 3 in the example shown in FIG. 11 is formed using three rows of ventilation channels 2 as one unit, and the wet / dry switching region 4 is formed of one row of ventilation channels. 2 are formed as one unit, and the upper end of the filler 1 forming the wet / dry switching area 4 extends upward along both sides of the water sprinkling pipe 6 disposed on the lower surface of the hot water tank 5. Thus, the intrusion of warm water 8 from the adjacent constantly wet area 3 can be prevented.

When the hot water 8 is sprayed from the water spray port 7 of the hot water tank 5 to the constant wet area 3, the water spray nozzle 10 which has been conventionally used for the hot water tank 5 of a general cooling water tower is used. Sprinkling of the hot water 8 is considered.

More specifically, as shown in detail in FIGS. 12 and 13, the conventional watering nozzle 10 is formed so as to be fitted and hooked to the watering port 7 of the hot water tank 5, and the hot water 8 is downwardly provided at the center. A nozzle head 12 having a nozzle hole 11 to be dropped, a pair of arms 13 extending downward from both sides of the lower surface of the nozzle head 12, and held at the lowermost end of each arm 13 directly below the nozzle hole 11 of the nozzle head 12 A first dispersion plate 14 having a conical shape adapted to be arranged at
Each of the arm portions 13 is provided above the first dispersion plate 14.
And orifice 15 in the center
Second dispersion plate 16 having a ring shape with an opening
And a third dispersion plate 18 having a ring shape having an orifice 17 larger than the orifice 15 in the center thereof, the third dispersion plate 18 being held and arranged by the respective arm portions 13 above the second dispersion plate 16. The hot water 8 dropped from the nozzle hole 11 of the nozzle head 12 is radially dispersed in each of the first dispersion plate 14, the second dispersion plate 16, and the third dispersion plate 18. They are being sprinkled.

A flange portion 19 is formed on the outer periphery of the upper end of the nozzle head 12 in the figure so as to be hooked to the bottom surface of the hot water tank 5 when fitted to the sprinkling port 7 of the hot water tank 5. On the left and right sides of the nozzle head 12 below the flange 19, withdrawal preventing claws 20 for preventing the nozzle head 12 from withdrawing upward are provided so as to be elastically deformable in the radial direction of the nozzle head 12. Further, a pair of pull-out preventing stoppers 21 extending upward and downward in a saw-tooth shape are provided at front and rear positions below the flange portion 19 of the nozzle head 12.

[0011]

However, in the conventional watering nozzle 10 as described above, as shown in a plan view in FIG. 14, an elongated rectangular area having three rows of ventilation passages 2 as one unit is formed. Since the hot water 8 is concentrically sprayed on the wet area 3 around the nozzle hole 11 (see FIG. 13) of the watering nozzle 10 in the A, B, and C directions, the skirt is formed. When the dispersion plate 16 and the third dispersion plate 18 perform watering with large dispersion radii as indicated by B and C in FIG. 14, the wet region 3 is always upwardly isolated from the wet / dry switching region 4. A large amount of hot water 8 corresponding to the water spray indicated by the phantom line (two-dot chain line) of the water sprays of B and C collides with the filler material 1 on both the left and right sides in FIG. , Width of three rows of ventilation channels 2 There is a possibility that the water distribution is biased only to the outer ventilation flow path 2 and the uniform water distribution to each ventilation flow path 2 is hindered, so that the hot water cooling effect and the white smoke prevention effect as designed cannot be obtained. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and provides a water spray nozzle capable of performing good water spray with high uniformity on each of the ventilation passages between the fillers. The purpose is to avoid performance deterioration of the cooling water tower.

[0013]

SUMMARY OF THE INVENTION The present invention relates to a water spray nozzle mounted on a water spray port of a hot water tank provided in a cooling water tower so that hot water in the hot water tank can be dispersed and dropped on a filler below. A nozzle head formed so as to be fitted and hooked to the sprinkling port of the hot water tank and having an opening at the center thereof for dropping hot water, and the nozzle connected directly under the nozzle head and having the nozzle A hot water dispersing device that disperses the hot water dropped from the holes so as to form a water film in the direction in which the fillers are arranged,
The hot water dispersing device has a substantially flat dispersion surface on the upper surface and a first dispersion plate arranged just below the nozzle hole of the nozzle head, and a row of fillers sandwiching the first dispersion plate. A pair of stoppers having opposed inclined surfaces which are arranged opposite to each other in a direction perpendicular to the direction and open downward in a divergent shape, and first stoppers formed at both ends of the opposed inclined surfaces of the respective stoppers in the direction in which the filler is arranged. And a dispersing surface disposed above the first dispersing plate and having a cross section forming a mountain shape as viewed from the direction in which the fillers are arranged. A second dispersion plate having an orifice having an opening area, and second guides erected at both ends of the dispersion surface of the second dispersion plate in the direction in which the fillers are arranged. A.

Therefore, according to the present invention, the hot water falls from the nozzle hole of the nozzle head to the orifice of the second dispersion plate and the surrounding dispersion surface, and the hot water dropped to the orifice as it is is the first dispersion plate. Fall on the dispersing surface and disperse to the periphery, most of which collides with the opposing inclined surfaces of the respective stoppers disposed opposite to each other with the first dispersing plate interposed therebetween, and flows down obliquely along the opposing inclined surfaces. The first guide forms a water film having a width expansion angle defined by the first guide and is dispersed in the direction in which the fillers are arranged. On the other hand, the hot water that has fallen on the dispersion surface of the second dispersion plate is crested on the dispersion surface. According to the cross-sectional shape of the mold, it is divided before and after in the direction perpendicular to the direction in which the filler is arranged, and flows down obliquely, forming a water film whose width spread angle is defined by the second guides at both ends of the filler. Are distributed in the direction of It will be.

If the warm water is dispersed so as to form a water film in the direction in which the fillers are arranged, water is not sprayed in such a direction as to collide with the surface of the fillers. Since it is possible to distribute the hot water evenly to each of the ventilation passages and to perform good water spray with high uniformity, it is possible to avoid a decrease in performance of the cooling water tower due to uneven water spray.

Further, in the present invention, a dispersing surface which is disposed further above the second dispersing plate and has a cross section forming a mountain shape when viewed from the direction in which the filler is arranged has a dispersing surface on the upper surface, and a nozzle is provided at the center. A third dispersion plate having an orifice smaller than the nozzle hole of the head and having an opening area larger than the orifice of the second dispersion plate, and standing upright at both ends of the dispersion surface of the third dispersion plate in the direction in which the fillers are arranged; A third guide formed so as to open in a divergent shape toward the downward direction of the dispersion surface may be provided.

With this arrangement, the hot water dropped from the nozzle hole of the nozzle head falls on the third orifice and the surrounding dispersion surface before falling on the second dispersion plate, and the mountain-like shape of the dispersion surface is formed. According to the cross-sectional shape, the filler is sorted back and forth in a direction perpendicular to the arrangement direction of the filler, and flows down obliquely, and the third guides at both ends thereof form a water film with a divergent angle of width defined and the arrangement of the filler. Therefore, two layers of the water film formed by the third dispersion plate are added to the four layers of the water film formed by the first dispersion plate and the stopper and the second dispersion plate. It becomes possible to perform watering with a water film of the layer.

Further, in connecting the hot water dispersing tool directly below the nozzle head, a pair of arms extending downward are provided at both ends of the lower surface of the nozzle head in the direction in which the filler is arranged with the nozzle hole interposed therebetween. It is preferable to connect the hot water dispersing tool to the nozzle head via the nozzle head. In this case, the arms are arranged so that the hot water dispersing tool does not interfere with the hot water dropping from the nozzle hole of the nozzle head. It is possible to connect directly below the head.

It is preferred that the outer dimensions of the hot water dispersing device be set within the diameter of the water spout of the hot water tank. In this case, when the water sprinkling nozzle is attached to the water spout of the hot water tank. It is only necessary to insert the hot water dispersing tool from above into the water spout and fit the nozzle head into the sprinkling port as it is, so that the sprinkling nozzle can be mounted very easily from inside the hot water tank. In addition, the mounting work on the lower surface of the hot water tank with poor workability is not required at all.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 8 show an embodiment of the present invention, in which the same reference numerals as in FIG. 11 denote the same parts.

As shown in FIG. 1, the watering nozzle 2 of this embodiment is
In FIG. 2, a nozzle hole 23 (see FIGS. 3, 5, and 6) formed so as to be fitted into and hooked to the sprinkling port 7 of the hot water tank 5 and for dropping hot water 8 at the center thereof. A hot water dispersion in which the opened nozzle head 24 and the hot water 8 connected directly below the nozzle head 24 and dropped from the nozzle hole 23 form a water film in the direction in which the filler 1 is arranged (the left-right direction in FIG. 1). The hot water dispersing tool 25 has an outer dimension of the water spout 7 of the hot water tank 5.
It is constituted so that it may fit within the caliber of.

2 to 8 show the watering nozzle 22.
As shown in detail, the nozzle head 24 shown here is formed substantially in the same manner as the nozzle head of a conventional watering nozzle, and the outer periphery of the upper end thereof is fitted to the watering port 7 of the hot water tank 5. A flange portion 26 is formed so as to be hooked to the bottom surface of the hot water tank 5 when the nozzle head 24 is pressed. The left and right sides of the nozzle head 24 below the flange portion 26 prevent the nozzle head 24 from being pulled out upward. A pull-out preventing claw 27 is provided so as to be elastically deformable in the radial direction of the nozzle head 24, and has a saw-tooth shape upward and downward at a front and rear position below the flange portion 26 of the nozzle head 24. A pair of extending stoppers 28 are provided.

A pair of downwardly extending arm portions 29 are provided at both ends of the lower surface of the nozzle head 24 in the direction in which the filler 1 is arranged with the nozzle hole 23 interposed therebetween.
The hot water dispersing device 25 is connected to the nozzle head 24 via the arms 29.

Further, the specific structure of the hot water dispersing tool 25 will be described in detail below. The hot water dispersing tool 25 has a substantially flat dispersion surface 30 on the upper surface and is located just below the nozzle hole 23 of the nozzle head 24. And a first dispersing plate 31 which is arranged at a position opposite to the first dispersing plate 31 in a direction perpendicular to the arrangement direction of the filler 1 (the direction in the left-right direction in FIGS. 3 and 4) with the first dispersing plate 31 interposed therebetween. Further, a pair of stoppers 33 each having an opposing inclined surface 32 that opens downward and diverging downward, and both ends of the opposing inclined surfaces 32 of the respective stoppers 33 diverging downwardly at both ends in the arrangement direction of the filler 1. The first guide 34 formed to open (particularly FIG.
And a dispersing surface 35 (particularly, see FIG. 3) disposed above the first dispersing plate 31 and having a mountain-shaped cross section as viewed from the direction in which the filler 1 is arranged. A second dispersion plate 37 having a rectangular orifice 36 having an opening area smaller than the nozzle hole 23 of the nozzle head 24, and a dispersion surface 35 of the second dispersion plate 37.
And a second guide 38 (particularly, see FIG. 8) which is provided upright at both ends in the direction in which the fillers 1 are arranged, and is formed so as to open divergently toward the downward direction of the dispersion surface 35.

Here, it is preferable that the mountain shape formed by the dispersion surface 35 of the second dispersion plate 37 be finished in a kamaboko-shaped curved surface shape as shown in the figure. It is possible to smoothly flow down the hot water 8 that has fallen in the form of a water film without giving an extra impact.

The first dispersion plate 31 is supported by connecting portions 39 extending downward from both left and right ends of the lower surface of the second dispersion plate 37 with the orifice 36 interposed therebetween. The upper end of 33
The lower end of each arm 29 is connected to the outer surface of the second guide 38.

Incidentally, both ends of the first dispersion plate 31 and the second dispersion plate 37 in the arrangement direction of the filler 1 are:
It is formed so as to form an acute edge portion when viewed from the direction perpendicular to the arrangement direction, so that it does not fall from this portion in a water film shape and wraps around the surface and wraps around the lower surface side of each dispersion plate. It is designed to prevent the occurrence of a flow.

In the watering nozzle 22 thus configured, the hot water 8 falls from the nozzle hole 23 of the nozzle head 24 to the orifice 36 of the second dispersion plate 37 and the dispersion surface 35 around the orifice 36. The hot water 8 that has fallen into the orifice 36 falls onto the dispersion surface 30 of the first dispersion plate 31 and is dispersed around the same.
When the flow toward the left and right ends of the zero is blocked by the connecting portion 39, most of the hot water 8 collides with the opposing inclined surfaces 32 of the respective stoppers 33 opposing each other with the first dispersion plate 31 interposed therebetween. It flows down obliquely along the opposing inclined surface 32, and is dispersed in the direction in which the fillers 1 are arranged, while forming a water film having a divergent angle of width defined by first guides 34 at both ends thereof. The hot water 8 that has fallen on the dispersion surface 35 of the dispersion plate 37 is distributed before and after in a direction perpendicular to the direction in which the filler 1 is arranged by the mountain-shaped cross-sectional shape of the dispersion surface 35, and flows down obliquely. The second guide 38 forms a water film having a defined width spread angle and is dispersed in the direction in which the fillers 1 are arranged.

If the hot water 8 is dispersed so as to form a water film in the direction in which the fillers 1 are arranged, water is not sprayed in such a direction as to impinge on the surface of the fillers 1. Since it is possible to distribute the hot water 8 evenly to each of the ventilation channels 2 formed between each other and to perform good water spray with high uniformity, it is possible to avoid the performance deterioration of the cooling water tower due to uneven water spray. Becomes

Therefore, according to the above-described embodiment, it is possible to perform good water spray with high uniformity on each of the ventilation flow paths 2 between the fillers 1. For example, as shown in FIG. The uniform wet area 3 forming an elongated rectangular area having a single ventilation passage 2 as a unit is sprayed with high uniformity to obtain a hot water cooling effect and a white smoke prevention effect as designed. Of the cooling water tower can be avoided.

In the present embodiment, however, a white smoke prevention type cold water tower having a wet area 3 and a wet / dry switching area 4 separately is exemplified. Even if the present invention is applied to a normal type of cooling water tower which is not adopted, it is possible to perform good water spray with high uniformity and to avoid performance deterioration due to uneven water spray.

If the hot water dispersing device 25 is connected directly below the nozzle head 24 by an arm portion 29 as shown in the drawing, each arm portion is prevented from interfering with the hot water 8 falling from the nozzle hole 23 of the nozzle head 24. The hot water dispersing tool 25 can be connected directly below the nozzle head 24 without any trouble by disposing the hot water dispersing tool 29.

Further, as described above, if the outer dimensions of the hot water dispersing tool 25 are configured to be within the diameter of the water spray port 7 of the hot water tank 5, the water spray nozzle 22 is attached to the water spray port 7 of the hot water tank 5. At this time, the hot water dispersing device 2
5 can be inserted, and the nozzle head 24 can be fitted into the watering port 7 and held as it is, so that the mounting of the watering nozzle 22 can be performed very easily from the hot water tank 5 and the workability can be improved. Mounting work on the lower surface of the bad hot water tank 5 can be completely eliminated.

FIGS. 9 and 10 show another embodiment of the present invention, in which a third dispersion plate 40 is disposed further above a second dispersion plate 37. Numeral 40 has a dispersion surface 41 having a mountain-shaped cross section as viewed from the direction in which the fillers 1 are arranged, and a second dispersion plate 37 smaller than the nozzle hole 23 of the nozzle head 24 at the center thereof. The orifice 36 has an opening area larger than that of the orifice 36 of the third dispersion plate 40. A third guide 43 is formed so as to open.

In this way, the hot water 8 that has fallen from the nozzle holes 23 of the nozzle head 24 falls on the orifice 42 of the third dispersion plate 40 and the surrounding dispersion surface 41 before falling on the second dispersion plate 37. The falling surface 41
Are divided before and after in a direction perpendicular to the direction in which the filler 1 is arranged, and flow down obliquely, forming a water film whose width spread angle is defined by the third guides 43 at both ends thereof. As a result, the filler 1 is dispersed in the arrangement direction, so that the third dispersion plate 40 is formed on the four-layer water film formed by the first dispersion plate 31 and the stopper 33 and the second dispersion plate 37. It is possible to perform watering with a total of six water films by adding two water films.

The sprinkling nozzle of the present invention is not limited to the above-described embodiment. For example, the nozzle head is formed so as to be able to fit and be hooked to the sprinkling port of the hot water tank and the center thereof is provided. It is sufficient that a nozzle hole for dropping hot water is opened in the portion, and it is not necessary to employ a nozzle head having the same shape as the conventional shape as shown in the drawing, and other ranges that do not depart from the gist of the present invention It goes without saying that various changes can be made in.

[0038]

According to the watering nozzle of the present invention described above,
Various excellent effects as described below can be obtained.

(I) According to the first aspect of the present invention, it is possible to perform good water spray with high uniformity on each of the ventilation passages between the fillers. The performance of the tower can be prevented from deteriorating.

(II) According to the second aspect of the present invention, the fourth dispersion film formed by the first dispersion plate and the stopper and the second dispersion plate is provided with the third dispersion plate. Water can be sprayed with a total of six water films by adding two water films.

(III) According to the third aspect of the present invention, each arm portion is arranged so as not to interfere with the hot water falling from the nozzle hole of the nozzle head, and the hot water dispersing device is directly below the nozzle head without any trouble. Can be connected.

(IV) According to the invention as set forth in claim 4 of the present invention, when the sprinkling nozzle is mounted on the sprinkling port of the hot water tank, the hot water dispersing tool is inserted into the sprinkling port from above, and the nozzle head is directly connected to the nozzle. Since it suffices to fit the sprinkler into the water spout and lock it, the sprinkler nozzle can be mounted very easily from inside the hot water tank, and the mounting work on the lower surface of the hot water tank, which has poor workability, is not required at all. be able to.

[Brief description of the drawings]

FIG. 1 is an overall view showing an example of an embodiment for implementing the present invention.

FIG. 2 is a front view showing details of a watering nozzle of FIG. 1;

FIG. 3 is a view in the direction of arrows III-III in FIG. 2;

FIG. 4 is a view in the direction of arrows IV-IV in FIG. 2;

FIG. 5 is a view in the direction of arrows VV in FIG. 4;

FIG. 6 is a view in the direction of arrows VI-VI in FIG. 2;

7 is a view in the direction of arrows VII-VII in FIG. 4;

FIG. 8 is a view in the direction of arrows VIII-VIII in FIG. 2;

FIG. 9 is a front view showing another embodiment of the present invention.

FIG. 10 is a view taken in the direction of arrows XX in FIG. 9;

FIG. 11 is an overall view showing a conventional example.

FIG. 12 is a front view showing details of a watering nozzle of FIG. 11;

FIG. 13 is a view in the direction of arrows XIII-XIII in FIG. 12;

FIG. 14 is a plan view showing a state of watering by a conventional watering nozzle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filler 5 Hot water tank 7 Water spout 8 Hot water 22 Water sprinkling nozzle 23 Nozzle hole 24 Nozzle head 25 Hot water disperser 29 Arm part 30 Dispersion surface 31 First dispersion plate 32 Opposing inclined surface 33 Stopper 34 First guide 35 Dispersion surface 36 Orifice 37 Second Dispersion Plate 38 Second Guide 39 Connection 40 Third Dispersion Plate 41 Dispersion Surface 42 Orifice 43 Third Guide

Continued on the front page (72) Inventor Katsutoshi Shibata 3-3-3 Harumi, Chuo-ku, Tokyo Ishikawajima Plant Engineering Co., Ltd. (72) Inventor Kazuki Sakuraba 3-3-1 Harumi, Chuo-ku, Tokyo Ishikawajima Plant Engineering F term in reference (reference) 4F033 AA09 BA04 CA03 DA05 EA01 JA02 JA06 NA01

Claims (4)

[Claims] 1. A water spray nozzle attached to a water spray port of a hot water tank provided in a cooling water tower so as to disperse and drop hot water in the hot water tank to a lower filling material. A nozzle head formed so as to be fitted and hooked and having a nozzle hole opened at the center thereof for dropping hot water, and a filler filled with hot water that is connected directly below the nozzle head and drops from the nozzle hole A hot water dispersing device for dispersing so as to form a water film in the arrangement direction of the nozzle head, wherein the hot water dispersing device has a substantially flat dispersion surface on the upper surface and is located immediately below the nozzle hole of the nozzle head. A dispersing plate, and a pair of stoppers having opposed inclined surfaces that are arranged opposite to each other in a direction perpendicular to the direction in which the filler is arranged across the first dispersing plate and that both open downward in a divergent shape; Slope facing each stopper A first guide formed at both ends in the direction in which the fillers are arranged, and a dispersion surface disposed above the first dispersion plate and having a mountain-shaped cross section as viewed from the direction in which the fillers are arranged on the upper surface thereof. A second dispersion plate having an orifice having an opening area smaller than the nozzle hole of the nozzle head at the center, and second guides provided upright on both ends in the direction of the filler arrangement on the dispersion surface of the second dispersion plate. And a watering nozzle. 2. A dispersing surface which is arranged further above the second dispersing plate and has a dispersing surface having a cross section forming a mountain shape when viewed from the direction in which fillers are arranged. A third dispersion plate having a small orifice having an opening area larger than the orifice of the second dispersion plate; and a third dispersion plate having an orifice having an opening area larger than the orifice of the second dispersion plate. The watering nozzle according to claim 1, further comprising a third guide formed so as to open in a divergent shape in the direction. 3. A pair of arms extending downward at both ends of the lower surface of the nozzle head in the direction in which the filler is interposed with the nozzle hole interposed therebetween, and the hot water disperser is connected to the nozzle head via each arm. The watering nozzle according to claim 1 or 2, 4. The watering nozzle according to claim 1, wherein an outer dimension of the hot water dispersing tool is configured to be within a diameter of a watering port of the hot water tank.