JP3834944B2 - Sprinkling nozzle of hot water tank in cold water tower - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a watering nozzle for a hot water tank in a cold water tower.
[0002]
[Prior art]
Since the air cooled by the cold water tower is moist air having a wetness of about 100%, if this wet air is discharged directly to the outside of the cold water tower, white smoke may be produced when the outside air temperature is low. .
[0003]
The generation of such white smoke gives misunderstandings to neighboring residents, etc. as if it is contaminating the outside air, and the white smoke descends on the ground and stays and falls like a mist around it. In recent years, there has been a demand for the development of a cold water tower that prevents white smoke from being generated as much as possible.
[0004]
Thus, as such a chilled water tower, when the outside air temperature is higher than a predetermined temperature, it is used as a so-called wet type, and when the outside air temperature is lower than the predetermined temperature, a wet type and a dry type can be used together. There is a wet / dry switching type as described above, and an example thereof is shown in FIGS.
[0005]
As shown in FIG. 8, the chilled water tower is provided at the top of the casing 1 and has an exhaust port 3 in which the blower 2 is installed, an outside air intake port 4 formed on the outer periphery of the casing 1, and an upper portion in the casing 1. The hot water tank 5 installed so as to surround the lower part of the exhaust port 3 and heat water exchanged with the outdoor air 11 that is arranged below the hot water tank 5 and flows from the hot water tank 5 through the external air intake 4 by the blower 2. Left and right heat exchanging parts 6 to be cooled, and a bottom water tank 7 which is installed below the heat exchanging part 6 and retains the cold water which has been cooled and flowed down by the heat exchanging part 6.
[0006]
As shown in FIGS. 9 and 10, the hot water tank 5 is formed in a rectangular box shape, and its internal space is partitioned by a zigzag-shaped partition plate 8 whose lower end is fixed to the upper surface of the bottom plate 5a. It is divided into a constant water storage area 9 and a wet / dry switching water storage area 10.
[0007]
Thus, the constant water storage area 9 and the wet / dry switching water storage area 10 extend so that the direction parallel to the inflow direction of the outside air 11 in a plan view becomes a comb-teeth shape. The portions extending in the shape of 10 comb teeth are shaped so as to enter each other in the gap between the comb teeth portions of the other regions 10 and 9.
[0008]
A hot water supply pipe 13 for supplying hot water 12 to the constant water storage area 9 is disposed on the constant water storage area 9 of the hot water tank 5, and the communication port 14 formed in the partition plate 8 has a constant water storage area 9. There is provided a switching valve 15 for correcting the water level difference of the hot water 12 in the wet / dry switching water storage region 10.
[0009]
Further, a hot water supply branch pipe 13 'for supplying the hot water 12 to the wet / dry switching storage area 10 is branched and connected to the middle portion of the hot water supply pipe 13, and a switching valve is connected to the hot water supply branch pipe 13'. 15 'is provided.
[0010]
A plurality of nozzle mounting holes 16 are formed at predetermined intervals in the longitudinal direction in the comb-shaped portion of the constant water storage region 9 of the bottom plate 5a of the hot water tank 5, and the hot water 12 is heated in each nozzle mounting hole 16. A watering nozzle 17 for watering toward the exchange unit 6 is fitted and fixed.
[0011]
On the comb-shaped portion of the wet / dry switching water storage region 10 of the bottom plate 5a of the hot water tank 5, the hot water 12 is sprinkled toward the heat exchanging portion in parallel with the nozzle mounting holes 16 at a required interval in the longitudinal direction. For this purpose, a plurality of water spray holes 18 are formed.
[0012]
On the lower surface of the bottom plate 5 a of the hot water tank 5, an isolation plate 19 (see FIG. 11) that is positioned almost directly below the portion of the partition plate 8 that extends parallel to the flow direction of the outside air 11 and that extends parallel to the partition plate 8 is fixed. The watering nozzle 17 and the watering hole 18 are located between the isolation plates 19 and 19 facing each other when viewed from the lower surface as shown in FIG.
[0013]
As shown in FIGS. 10 and 11, the heat exchanging unit 6, for example, has a plurality of heat exchanging surface materials 20 a and 20 b with unevenness formed on the surface of a sheet-like synthetic resin material, standing in a parallel and vertical manner, and opposing heat exchange The face members 20a and 20a, 20a and 20b, and 20b and 20b are joined together via a protruding connecting member (not shown) with a required gap therebetween, so that they can stand alone as a whole. The filler 20 is provided, and the heat exchange face materials 20a and 20b constituting the filler 20 are arranged as described below.
[0014]
That is, among the opposing isolation plates 19 and 19, the spacing between the isolation plates 19 and 19 is divided into approximately three equal parts and the water is sprayed between the lower surface of the bottom plate 5a at the opposing location with the watering nozzle 17 interposed therebetween. In order to form a gap for dispersing the hot water 12, a heat exchange face material 20 a whose upper end is positioned about 100 mm below the lower end of the isolation plate 19 is disposed, and between the opposing isolation plates 19, 19, The heat exchange face material is arranged so that the upper end is located approximately 10 to 20 mm below the lower surface of the bottom plate 5a and the side surface is in contact with the surface of the isolation plate 19 on the side of the water spray hole 18 at the position facing the water spray hole 18. 20b is arranged.
[0015]
Thus, the space partitioned by the heat exchange face materials 20b and 20b and in which the heat exchange face material 20a is disposed between the heat exchange face materials 20b and 20b is always a wet space 21, and is formed by the heat exchange face materials 20b and 20b. A space that is partitioned and does not have the heat exchange face material 20a between the heat exchange face materials 20b and 20b is a wet / dry switching space 22.
[0016]
When the hot water 12 is cooled by the above-described cold water tower, when the outside air temperature is higher than a predetermined temperature, the switching valves 15 ′ and 15 are opened.
[0017]
Therefore, the hot water 12 supplied to the hot water tank 5 from the hot water supply pipes 13 and 13 ′ is always accumulated in both the water storage area 9 and the wet / dry switching water storage area 10, and the accumulated hot water 12 is heated from the watering nozzle 17. Water is constantly sprinkled in the wet space 21 of the exchange unit 6 and water is sprinkled from the sprinkling holes 18 to the wet / dry switching space 22 of the heat exchange unit 6.
[0018]
The hot water 12 sprayed in the wet space 21 and the wet / dry switching space 22 always adheres to the surfaces on both sides of the heat exchange face materials 20a and 20b and flows down in the form of a water film.
[0019]
Further, the outside air 11 always sucked into the wet space 21 and the wet / dry switching space 22 from the outside air intake 4 shown in FIG. 8 by the blower 2 flows into these spaces 21 and 22 to the heat exchange face materials 20a and 20b. The hot water is cooled by direct contact with the hot water flowing down along the way, and is always discharged from the wet space 21 and the wet / dry switching space 22, and then 100% wet air is passed through the exhaust port 3. The air 23 is discharged into the atmosphere.
[0020]
The cooling water generated by the hot water being cooled by heat exchange further flows down along the heat exchange face materials 20 a and 20 b and flows into the bottom water tank 7.
[0021]
In this case, since the outside air temperature is higher than the predetermined temperature, the hot water 12 is also supplied to the wet / dry switching water storage region 10, and the exhaust port is spouted even if the hot water 12 is sprinkled from the sprinkling hole 18 to the wet / dry switching space 22. The air 23 exhausted from 3 does not become white smoke.
[0022]
Since the switching valve 15 is open, there is no difference in water level between the hot water 12 supplied to the constant water storage area 9 and the wet / dry switching water storage area 10 and the water level is maintained at the same level.
[0023]
When the outside air temperature is lower than a predetermined temperature as in winter, the switching valves 15 ′ and 15 are closed.
[0024]
For this reason, the hot water 12 supplied from the hot water supply pipe 13 to the hot water tank 5 is always accumulated only in the water storage region 9, and the accumulated hot water 12 is sprayed from the water spray nozzle 17 to the constantly wet space 21 of the heat exchanging unit 6 to be heated. It adheres to the surface on both sides of the exchange face material 20a and the surface of the heat exchange face material 20b facing the wet space 21 at all times and flows down in the form of a water film.
[0025]
However, in this case, since the hot water 12 is not supplied to the wet / dry switching water storage region 10 of the hot water tank 5, water is not sprayed from the sprinkling holes 18 to the wet / dry switching space 22, and therefore the heat exchange face material 20b is not sprayed. A water film of hot water is not formed on the surface on the wet / dry switching space 22 side.
[0026]
As described above, the outside air 11 constantly sucked into the wet space 21 from the outside air intake 4 by the blower 2 is in direct contact with the hot water 12 flowing along the heat exchange face materials 20a and 20b while flowing through the wet space 21 at all times. Cool the hot water by exchanging.
[0027]
On the other hand, the outside air 11 sucked into the wet / dry switching space 22 by the blower 2 circulates in the wet / dry switching space 22, and from the warm water 12 flowing down the surface of the heat exchange face material 20 b on the constantly wet space 21 side, It is heated without heat supply by heat conduction through the heat exchange facet 20b, and as a result, the hot water 12 is cooled.
[0028]
The air discharged from the wet space 21 is 100% moist air, but the air discharged from the wet / dry switching space 22 is dry air. Therefore, the air is mixed and discharged from the exhaust port 3 to the atmosphere. The humidity of the air 23 is not saturated, and therefore the air 23 does not become white smoke in the atmosphere.
[0029]
[Problems to be solved by the invention]
In the above-mentioned cold water tower, the amount per unit time of the hot water 12 sprayed from the wet / dry switching storage area 10 of the hot water tank 5 into the wet / dry switching space 22 of the heat exchange section 6 through the spray holes 18 is as follows: It is about 1/3 of the amount per unit time of the hot water 12 sprayed from the constant water storage region 9 of the hot water tank 5 to the always wet space 21 of the heat exchange section 6 through the water spray nozzle 17. This is determined by the amount of hot water 12 that should not be delivered to the wet / dry switching space 22 to prevent white smoke.
[0030]
Further, even when the hot water 12 is sprinkled in the wet / dry switching space 22, it is necessary to uniformly spray the entire wet / dry switching space 22 as much as possible. As a result, the number of sprinkling holes 18 increases, and it is necessary to reduce the hole diameter d (see FIG. 12) of the sprinkling holes 18 (d = 5 to 6 mmφ).
[0031]
However, if the hole diameter d of the water sprinkling hole 18 is small, when the hot water 12 is sprinkled from the sprinkling hole 18 to the wet / dry switching space 22, foreign matters such as dust contained in the hot water 12 enter the water sprinkling hole 18. There is a possibility that the water spray hole 18 is clogged, and as a result, a predetermined amount of hot water 12 cannot be sprayed from the water spray hole 18.
[0032]
In view of the above-described circumstances, the present invention prevents clogging due to foreign matter in the hot water flow path when water is sprayed from the wet / dry switching water storage area of the hot water tank to the wet / dry switching space of the heat exchange section. It aims at providing the watering nozzle for this.
[0033]
[Means for Solving the Problems]
The present invention has a flow path for spraying hot water in the wet / dry switching storage area of the hot water tank to the wet / dry switching space of the heat exchange section, and is provided in the wet / dry switching storage area of the bottom plate of the hot water tank. To the upper end of the barrel portion that can be fitted into the nozzle mounting hole, toward the center portion of the barrel portion so as to prevent foreign matter in the warm water in the wet / dry switching water storage area from flowing into the flow path. An up-gradient foreign matter inflow prevention flange is provided so that the upper end is located below the surface of the hot water in the wet / dry switching storage area of the hot water tank, and hot water flowing down from the flow path is provided at the lower end of the trunk. A shunt plate formed in a cross shape with the center of the body portion as a reference in a plan view so as to be split into a plurality of flows, and a reaction that rebounds the hot water that has been shunted into a plurality of flows by the shunt plates. A jump board is provided .
[0035]
Further, the present invention has a flow path for spraying hot water in the wet / dry switching storage area of the hot water tank to the wet / dry switching space of the heat exchange section, and in the wet / dry switching storage area of the bottom plate of the hot water tank. An upper end of the hot water tank is provided at the upper end of the body portion that can be fitted into the nozzle mounting hole provided to prevent foreign matter in the hot water in the wet / dry switching water storage area from flowing into the flow path. Provided with a foreign substance blocking cylinder that protrudes above the surface of the hot water in the wet / dry switching storage area and has a diameter larger than that of the barrel, and connects the lower end of the foreign substance blocking cylinder and the upper end of the barrel. An inflow hole is provided so that the hot water in the wet / dry switching storage area of the hot water tank can flow into the foreign matter blocking cylinder from below, and the hot water flowing down from the flow path is divided into a plurality of flows at the lower end of the body In a cross shape with the center of the torso as a reference in plan view A shunt plate made is obtained by providing the anti跳板to recoil hot water came flowing down is diverted into a plurality of streams by該分flow plate.
[0036]
In the watering nozzle of the hot water tank in the cold water tower of the present invention, it is possible to prevent clogging due to foreign matters in the flow path of the hot water, and the hot water can be divided into a plurality of flows by the flow dividing plate, and is divided. Since the hot water that has flowed down is recoiled by the recoil plate, the hot water is uniformly distributed in the wet / dry switching space .
[0037]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0038]
1-3 is an example of embodiment of the watering nozzle of the hot water tank in the cold water tower of this invention.
[0039]
Thus, the watering nozzle 31 of the present embodiment is integrally formed with a hollow annular body portion 33 that fits into a nozzle mounting hole 32 formed in the bottom plate 5 a of the hot water tank 5, and an upper end outer periphery of the body portion 33. And a foreign matter inflow prevention flange 34 that allows the lower surface to be seated on the upper surface of the bottom plate 5a when the body 33 is fitted into the nozzle mounting hole 32 in a predetermined state, and the lower end of the body 33 has a planar shape. A diverter plate 35 fixed in a cross shape and a recoil plate 36 fixed to the lower end of the diverter plate 35 are provided.
[0040]
The upper surface of the foreign matter inflow prevention flange 34 is formed with an upward slope of about 30 ° from the radially outer side toward the body portion 33 side, and the hollow portion 33a provided at the axial center portion of the body portion 33 is From the upper end to the midway in the height direction, it is formed in a tapered shape having a smaller diameter as it descends, and the lower part from the midway is formed straight. Thus, the inner diameter of the hollow portion 33a is about 5 to 6 mm at the lower end.
[0041]
When the sprinkling nozzle 31 is set in the nozzle mounting hole 32 of the bottom plate 5a, the foreign matter inflow prevention flange 34 is located in the wet / dry switching water storage region of the hot water tank 5, and below the lower portion of the body portion 33 is a heat exchange portion. It is located in the wet / dry switching space 22.
[0042]
In FIG. 1, reference numeral 37 denotes foreign matters such as dust having a specific gravity greater than that of the hot water 12 and accumulated on the upper surface of the bottom plate 5a.
[0043]
Next, the operation of the present embodiment will be described.
[0044]
The hot water 12 accumulated in the wet / dry switching water storage region of the hot water tank 5 flows into the hollow portion 33a provided in the body portion 33 of the watering nozzle 31, flows down the hollow portion 33a, and is divided into four flows by the flow dividing plate 35. After being diverted, flowed down, collided with the recoil plate 36, rebounded, and evenly dispersed, the water was sprayed from the recoil plate 36 radially outward opening portion of the shunt plate 35 to the wet / dry switching space 22 of the heat exchange section. The
[0045]
The foreign matter 37 such as dust flows together with the hot water 12 on the bottom plate 5a toward the water spray nozzle 31 side, but is blocked by the outer diameter edge of the foreign matter inflow prevention flange 34 and cannot flow on the inclined surface of the upper surface of the foreign matter inflow prevention flange 34. The foreign matter 37 is not sucked into the hollow portion 33a, and therefore the clogging of the hollow portion 33a that functions as a water spray hole is prevented.
[0046]
FIGS. 4-7 is another example of embodiment of the watering nozzle of the hot water tank in the cold water tower of this invention.
[0047]
The watering nozzle 41 of the present embodiment is fixed to a hollow cylindrical body 43 fitted in a nozzle mounting hole 42 formed in the bottom plate 5 a of the hot water tank 5, and a lower outer periphery of the body 43. A flange 44 that has a lower surface seated on the upper surface of the bottom plate 5a to support the barrel 43 when the barrel 43 is fitted into the nozzle mounting hole 42 in a predetermined state, and an upper end outer periphery of the barrel 43 are integrated. The annular top plate 45 having an outer diameter larger than that of the body portion 43 and the outer periphery of the annular top plate 45 are integrally fixed, and the upper end is accumulated in the wet / dry switching water storage region of the hot water tank 5. A hollow cylindrical foreign substance blocking cylinder 46 projecting upward from the water surface of the hot water 12, an annular bottom plate 47 integrally fixed to the lower end of the body 43, and a flat surface at the lower end of the bottom plate 47. The shunt plate 48 is fixed so as to have a cross shape, and is fixed to the lower end of the shunt plate 48. And a counter 跳板 49 that is.
[0048]
As shown in FIGS. 4 and 5, a plurality of hot water inflow holes 45a are formed in the annular top plate 45 so as to communicate with the hollow portions 46a of the foreign matter blocking cylinder 46 at necessary intervals in the circumferential direction. The hollow portion 46a of the body 46 communicates with the hollow portion 43a of the body portion 43. The hollow portion 43a of the body portion 43 communicates with the water spray holes 47a of the bottom plate 47, and the water hole 47a has a hole diameter of about 5 to 6 mmφ.
[0049]
Thus, when the water spray nozzle 41 is set in the nozzle mounting hole 42 of the bottom plate 5a, the upper end of the foreign matter blocking cylinder 46 protrudes above the water surface of the hot water 12 in the wet / dry switching water storage area, A portion below the flange 44 mounting position of the portion 33 protrudes into the wet / dry switching space 22 of the heat exchange portion.
[0050]
In FIG. 4, reference numeral 50 denotes foreign matters such as dust floating on the surface of the hot water 12 accumulated in the wet / dry switching storage area of the hot water tank 5.
[0051]
Next, the operation of the embodiment of the present invention will be described.
[0052]
The hot water 12 accumulated in the wet / dry switching water storage region of the hot water tank 5 flows into the hollow portion 46a of the foreign matter blocking cylinder 46 from below through the hot water inflow hole 45a of the annular top plate 45 in the water spray nozzle 41 and blocks the foreign matter. The tube 46 is reversed at the hollow portion 46a of the cylinder 46 and flows downward, and is divided from the hollow portion 43a of the barrel portion 43 through the water spray holes 47a of the bottom plate 47 into four flows at the flow dividing plate 48, and further flows down and collides with the recoil plate 49. The rebound is uniformly dispersed and sprinkled into the wet / dry switching space 22 of the heat exchanging portion from the radially outward recoil plate 49 opening portion of the flow dividing plate 48.
[0053]
The foreign matter 50 such as dust floats in the vicinity of the water surface of the hot water 12 in the wet / dry switching storage area of the hot water tank 5, but is blocked by the foreign matter blocking cylinder 46, so that the foreign matter 50 is a hollow portion 46 a of the foreign substance blocking cylinder 46. The water spray holes 47a are not clogged.
[0054]
In addition, this invention is not limited to the above-mentioned embodiment, Of course, various changes can be added within the range which does not deviate from the summary of this invention.
[0055]
【The invention's effect】
The watering nozzle for hot-water tank in the cooling tower of the present invention, it is possible to prevent the clogging due to foreign substances occurs in the flow path of hot water, and can be sprinkled uniformly dispersed hot water, etc. Various excellent The effects can be achieved.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an example of an embodiment of a watering nozzle of a hot water tank in a cold water tower of the present invention.
FIG. 2 is a view taken in the direction of arrows II-II in FIG.
3 is a view taken in the direction of arrows III-III in FIG.
FIG. 4 is a longitudinal sectional view showing another example of the embodiment of the watering nozzle of the hot water tank in the cold water tower of the present invention.
5 is a VV direction arrow view of FIG. 4;
6 is a view taken in the direction of the arrow VI-VI in FIG. 4;
7 is a VII-VII direction arrow view of FIG. 4;
FIG. 8 is a general schematic longitudinal sectional view of a cold water tower capable of switching between wet and dry.
9 is a plan view of a hot water tank of the cold water tower shown in FIG.
10 is a perspective view of the hot water tank and the upper part of the heat exchange section of the cold water tower shown in FIG. 8. FIG.
11 is a longitudinal sectional view of the hot water tank and the upper part of the heat exchange section of the cold water tower shown in FIG.
12 is a view taken in the direction of the arrow XII-XII in FIG.
[Explanation of symbols]
5 Hot water tank 5a Bottom plate 6 Heat exchange section 10 Wet / dry switching storage area 12 Warm water 22 Wet / dry switching space 31 Sprinkling nozzle 32 Nozzle mounting hole 33 Body 33a Hollow section (flow path)
34 Foreign matter inflow prevention flange (foreign matter inflow prevention means)
35 shunt plate 36 recoil plate 37 foreign matter 41 watering nozzle 42 nozzle mounting hole 43 barrel portion 43a hollow portion (flow path)
45 annular top plate
45a hot water inflow hole ( inflow hole )
46 foreign matter blocking cylinder (foreign matter inflow prevention means)
46a hollow part (flow path)
47 bottom plate 47a sprinkling hole (flow path)
48 shunt plate 49 recoil plate 50 foreign material

Claims (2)

A nozzle mounting hole provided in the wet / dry switching water storage area of the bottom plate of the hot water tank has a flow path for spraying hot water in the wet / dry switching water storage area of the hot water tank to the wet / dry switching space of the heat exchange section. A foreign substance having an upward slope toward the center of the trunk so as to prevent foreign substances in the hot water in the wet / dry switching water storage area from flowing into the flow path at the upper end of the trunk that can be fitted. An inflow prevention flange is provided so that the upper end is positioned below the surface of the hot water in the wet / dry switching storage area of the hot water tank, and the hot water flowing down from the flow path is divided into a plurality of flows at the lower end of the trunk. A diversion plate formed in a cross shape with respect to the center of the body portion in plan view so as to be diverted, and a recoil plate that recoils the hot water that has been diverted into a plurality of flows by the diversion plate the hot-water tank in the cooling tower, characterized in that the Water nozzle. A nozzle mounting hole provided in the wet / dry switching water storage area of the bottom plate of the hot water tank has a flow path for spraying hot water in the wet / dry switching water storage area of the hot water tank to the wet / dry switching space of the heat exchange section. The upper end of the wet / dry switching water storage area of the hot water tank is placed at the upper end of the body portion that can be fitted to prevent foreign matter in the hot water in the wet / dry switching water storage area from flowing into the flow path. A foreign substance blocking cylinder that protrudes upward from the surface of the hot water in the pipe and has a diameter larger than that of the trunk part, and a plate that connects the lower end of the foreign substance blocking cylinder and the upper end of the trunk part, An inflow hole is provided so that hot water in the dry-type switching water storage area can flow into the foreign matter blocking cylinder from below, and the hot water flowing down from the flow path is divided into a plurality of flows at the lower end of the body portion in plan view. A diversion formed in a cross shape with the center of the body as a reference When watering nozzle of the hot water tank in the cooling tower, characterized in that a and anti跳板to recoil hot water came flowing down is diverted into a plurality of streams by該分flow plate.

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