JP3704764B2 - Water tower and water nozzle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cold water tower that cools hot water by directly contacting the hot water and air to vaporize a part of the hot water, and a water spray nozzle for the cold water tower.
[0002]
[Prior art]
As shown in FIG. 4, a cross-flow type cold water tower (cooling tower) 1 includes a hot water tank 2 at an upper portion of a casing (not shown) and an air intake port 3 with a louver 3a on a side surface of the casing. And by sprinkling warm water from the sprinkling nozzle 5 provided in the lower part of the warm water tank 2 to the filler 4 inside the casing, and bringing the air introduced from the air intake 3 into direct contact with the warm water flowing down the surface of the filler 4 The hot water is vaporized to cool the hot water.
[0003]
By the way, as shown in FIGS. 5 (a) and 5 (b), the watering nozzle 5 is vertically arranged below the watering hole 5b of the upper end base portion 5a in order to spray water over a wide range as much as possible. Annular scattering plates 5c, 5d, and 5e are horizontally arranged at an appropriate interval. 5f is a rib suspended from the upper end base portion 5a to hold the scattering plates 5c, 5d, 5e, and is arranged at intervals in the circumferential direction. The arrows in FIG. 5B indicate the flow of hot water, and FIG. 5C indicates the watering direction S and the watering range H. Accordingly, the hot water can be sprinkled on the filler 4 while being evenly distributed.
[0004]
[Problems to be solved by the invention]
However, in the vicinity of the air intake 3, the water spraying performance in the entire circumferential direction of the water spray nozzle 5 has caused the hot water to be scattered outside from the gap of the louver 3 a.
[0005]
In view of the above circumstances, an object of the present invention is to provide a cold water tower and a watering nozzle therefor that prevent the scattering of hot water to the outside.
[0006]
[Means for Solving the Problems]
The invention according to claim 1 is provided with an air intake port on a side surface of the casing and attached to a lower part of the hot water tank of a cooling tower provided with a hot water tank at the upper part of the casing, and sprays hot water toward a filler inside the casing. In the sprinkling nozzle, a sprinkling hole penetrating in the length direction of the block is formed in a columnar block extending downward from the lower part of the hot water tank, and the sprinkling hole has a semicircular cross section, and the top and bottom of the block. It is characterized by being formed in a tapered shape so as to expand the diameter on both end sides .
[0007]
The invention of claim 2 relates to a cooling tower comprising the watering nozzle described in claim 1.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1A is a plan view showing a schematic configuration of the chilled water tower 11, and FIG. 1B is a side view thereof. The cold water tower 11 includes a rectangular hot water tank 2 at the upper part of a casing (not shown), air intakes 3 with louvers 3a on both sides of the casing, and water nozzles 15 disposed in a plurality of rows and columns at the lower part of the hot water tank 2, A portion of the hot water is vaporized by spraying warm water from 5 to the filler 4 inside the casing in a uniform distribution and bringing the air introduced from the air intake 3 into direct contact with the warm water flowing down the surface of the filler 4. The hot water is cooled. The air taken in from the air intake 3 circulates horizontally through the filler 4 incorporated in the casing, and is released into the outside air from an unillustrated exhaust port with a fan provided at the upper center of the casing.
[0009]
In this case, the water spray nozzle 15 of the special type shown in FIG. 2 is used for the water spray nozzle in the endmost row adjacent to the air intake port 3, and the water spray nozzles in the row not adjacent to the air intake port 3 are used for the other water spray nozzles 15. The same water spray nozzle 5 of the circumferential direction water spray type as in the prior art is used.
[0010]
As shown in FIGS. 2 (a) and 2 (b), the special-type watering nozzle 15 has a semi-cylindrical scattering prevention plate (scattering prevention plate) that is half of the outer peripheral surface of the conventional circumferential watering nozzle 5. By forming the shape covered with the (member) 16, the watering direction S and the watering range H are limited to one half as shown in FIG. 2 (c). In the illustrated example, the range where the anti-scattering plate 16 is provided excludes the space between the lowermost scattering plate 5e and the intermediate anti-scattering plate 5d, but the anti-scattering plate 16 is extended so as to cover the range 18. Also good. It is desirable to determine the range to be provided according to the situation each time. The scattering prevention plate 16 may be manufactured separately from the main body portion of the watering nozzle 15 and attached later, or may be integrally formed at the same time when the main body portion is manufactured. In the cold water tower 11 of the embodiment, all of the special type watering nozzles 15 are attached so that the scattering prevention plate 16 faces the air intake 3 side.
[0011]
Thus, by providing the special type watering nozzle 15 in which the water spraying direction is restricted at the endmost row adjacent to the air intake port 3, it is possible to prevent scattering of hot water from the air intake port 3 to the outside. it can.
[0012]
In this row of end portions, the hot water is evenly sprayed on the filler 4 in the range of half a circle, so there is almost no problem in terms of cooling performance. Moreover, the problem that the hot water scattered toward the outside hits the louver 3a and rebounds can be solved. Further, the special type watering nozzle 15 can be arbitrarily applied to a portion where the watering direction is restricted so that hot water does not flow into the dry portion of the filler 4, that is, a portion that is not adjacent to the air intake 3. .
[0013]
In this embodiment, the scattering prevention plate 16 is integrated with the watering nozzle 15, but a scattering prevention plate may be provided separately from the watering nozzle 15. For example, in the example of FIG. 1, a long strip-shaped splash prevention plate is placed outside the sprinkling nozzle row at the end (row of the sprinkling nozzle 15 in the drawing), and the air inlet 3 side surface of all the sprinkling nozzles. It can also be arranged to cover.
[0014]
Next, an example of another watering nozzle in which the watering direction is limited to one half circumference will be described with reference to FIG. In addition, the upper figure of FIG. (A), (b) is the top view seen from the top, and another figure is a side view.
[0015]
First, the watering nozzle 25 shown in FIG. 3A is provided with a semi-cylindrical block (scattering prevention member) 26 that covers a half on one side on the lower surface of a cylindrical upper end base portion 25a having a low height. A semicircular water spray hole 25b is provided in the upper end base portion 25a so as to correspond to the side where the 26 is not provided, and a semicircular scattering plate 25c supported by the block 26 below the semicircular water spray hole 25b, 25d and 25e are provided in three stages above and below at intervals. According to the watering nozzle 25, the hot water falling from the watering hole 25a can be scattered outward along the upper surface of the scattering plates 25c, 25d, and 25e as indicated by the arrows within a half circumference.
[0016]
Next, the watering nozzle 35 shown in FIG. 3B is provided with a cylindrical block (corresponding to a scattering prevention member) 36 at the lower part of the upper end base portion 35a from the beginning, and the block 36 has a semicircular watering hole 35b. The semicircular water spray hole 35b is tapered so that the upper and lower ends are enlarged. In this watering nozzle 35, since one side half of the watering hole 35b is substantially closed, the hot water flows as indicated by an arrow toward the lower side of the remaining one side half.
[0017]
Next, the watering nozzle 45 shown in FIG. 3 (c) removes one half of the portion below the upper end base portion 45a of the conventional watering nozzle 5 shown in FIG. The vertical scattering prevention plate (scattering prevention member) 46 is provided. The upper and lower scattering plates 5c, 5d, and 5e are supported by vertical scattering prevention plates 46 in addition to the ribs 5f. In this watering nozzle, the half on one side is covered with the vertical scattering prevention plate 46, so that the hot water flows in the remaining one-half region as shown by the arrow.
[0018]
As described above, since the structure is such that hot water is scattered only in one half of the region, it can be applied to the cold water tower of FIG. 1 as it is.
[0019]
【The invention's effect】
As described above, according to the present invention , since the air intake side surface of the watering nozzle adjacent to the air intake port is covered with the scattering preventing member, it is possible to prevent scattering of hot water from the air intake port to the outside. Can do. Moreover, according to this invention, since the scattering prevention member is integrated with the watering nozzle, it can also be attached to the existing cold water tower.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a chilled water tower according to an embodiment of the present invention, where (a) is a plan view and (b) is a side view.
FIG. 2 shows a watering nozzle used in the cold water tower, (a) is an external side view, (b) is a side sectional view, and (c) is a plan view showing a watering range.
FIGS. 3A to 3C show watering nozzles according to other embodiments of the present invention. FIGS. 3A and 3B are top views, side views, and FIG. (C) is a side view.
FIG. 4 is a side sectional view showing a schematic configuration of a conventional cold water tower.
5A and 5B show a watering nozzle used in a conventional water tower, FIG. 5A is an external side view, FIG. 5B is a side sectional view, and FIG. 5C is a plan view showing a watering range.
[Explanation of symbols]
2 Hot water tank 3 Air intake 4 Filler 15, 25, 35, 45 Sprinkling nozzle 16, 46 Splash prevention plate (scattering prevention member)
26, 36 blocks (scattering prevention member)

Claims (2)

In the watering nozzle that is provided with an air inlet on the side of the casing and is attached to the lower part of the hot water tank of the cooling tower having the hot water tank at the upper part of the casing, and sprays hot water toward the filler inside the casing.
Sprinkling holes penetrating in the length direction of the block are formed in a columnar block extending downward from the lower part of the hot water tank, and the watering holes have a semicircular cross section, respectively on the upper and lower ends of the block. The watering nozzle characterized by being formed in the taper shape so that it may expand in diameter . A cooling tower comprising the watering nozzle according to claim 1.

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