JP2630551B2 - Crossflow cooling tower - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross-flow cooling tower, and more particularly to a cross-flow cooling tower which prevents generation of white smoke.

[0002]

2. Description of the Related Art Cross-flow cooling towers are used to exchange heat between warm water (hereinafter referred to as "cooled water") discharged from air conditioning equipment and factory equipment and the outside air, and have been used more widely than before. ing. By the way, if this cross-flow type cooling tower is used when the outside air temperature is low, the moisture in the air discharged from the exhaust port of the cooling tower will be supersaturated and generate white smoke, which may hinder traffic, or at night. Had problems such as the possibility of being mistaken for a fire due to the amount of light. In order to cope with this, it has been proposed to install a dry heat exchanger (plate fin coil) in the cooling tower or to form a dedicated air passage between the air of the filler unit of the cooling tower and the passage of the water to be cooled. I have. However, in the former case, a space for installing a dry heat exchanger is required, so that the cooling tower becomes large, and the piping and other structures for the dry heat exchanger become complicated, resulting in high production costs. Had. On the other hand, in the latter case, although the structure is simple, there is a problem that the effect of preventing the generation of white smoke is not sufficient.

[0003]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the conventional cross-flow cooling tower, the present invention provides a cross-flow cooling tower having a simple structure and having a sufficient effect of preventing the generation of white smoke. The purpose is to provide.

[0004]

According to the first aspect of the present invention, a blower is provided at an exhaust port provided at an upper portion of a cross-flow cooling tower, and the blower is provided on a side surface of the cooling tower. After sucking air into the cooling tower from the outside air inlet, and performing heat exchange with the water to be cooled sprinkled from the upper water tank by the filler unit disposed inside the cooling tower, the air is removed. In a cross-flow type cooling tower that exhausts air from an internal space of a cooling tower via an exhaust port, a passage defined by a filler plate in at least one filler unit includes air and a water passage, a dedicated air passage, and water to be cooled. The gist of the present invention is that the cooling water passage is formed as a dedicated passage, and the cooling water passage is formed by using a filler unit disposed adjacent to the air passage.

According to a second aspect of the present invention, in the cross-flow type cooling tower according to the first aspect, the air-only passage or the water-to-be-cooled passage is formed at the upper end of the filler plate or at the end on the outside air intake side. The gist is that the parts are formed by bonding to each other.

According to a third aspect of the present invention, in the cross-flow cooling tower according to the first aspect of the present invention, the air-only passage or the water-to-be-cooled passage is provided at an upper end portion of a filler plate constituting the passage or at an outside air intake side end. The gist is that the shielding plate is formed by inserting a shielding plate into a groove formed in the portion.

According to a fourth aspect of the present invention, in the cross-flow type cooling tower according to the first to third aspects, a plurality of filler units are superimposed inside the cooling tower, and a lower filler unit is provided by a filler plate. The gist of the present invention is to use a filler unit in which the divided passage is formed as an air / cooled water passage or an air exclusive passage.

According to a fifth aspect of the present invention, in the cross-flow cooling tower according to the first to fourth aspects, a plurality of filler units are arranged in a plurality of rows inside the cooling tower. A valve provided in a water supply pipe connected to the upper water tank of the first embodiment, and a passage defined by a filler plate in at least one row of the filler units formed as air and a passage for cooling water or a passage dedicated to air. The gist is to use units.

[0009]

According to the cross-flow cooling tower of the first aspect of the present invention having the above-described structure, similarly to the conventional cross-flow cooling tower, cooling is performed by a blower disposed at an exhaust port provided above the cooling tower. Air is drawn into the cooling tower from the outside air inlet provided on the side of the tower, and heat is exchanged between the cooling water and water to be sprayed from the sprinkling port of the upper water tank by the filler unit disposed inside the cooling tower. After cooling, the air to be cooled is exhausted from the cooling tower internal space via an exhaust port to cool the water to be cooled. The air that has passed through the water passage, the air-only passage, and the filler unit formed as the passage for exclusive use of the cooling water is the air and the high-temperature saturated air that has passed through the passage for the cooling water and the air that has dried in the high temperature that has passed through the exclusive passage for air Is mixed, but this sky Is heated by the cooling water flowing down the adjacent cooling water dedicated passage through the filler plate when passing through the packing material unit, and particularly, the cooling water exclusive passage is arranged adjacent to the air exclusive passage. As a result, the air that has passed through the dedicated air passage becomes high-temperature, dry air, and the relative humidity of the air is higher than the relative humidity of the air that has passed through the filler unit that does not have the conventional dedicated passage for cooling water. The humidity is lower than the humidity, thereby effectively preventing the generation of white smoke caused by supersaturation of the moisture in the air discharged from the exhaust port of the cooling tower.

According to the cross-flow cooling tower of the second aspect of the present invention, the upper ends of two opposing filler plates, which are to form a passage exclusively for air, are adhered to each other so that the space between the filler plates is reduced. To prevent the water to be cooled from flowing into the cooling water from above, and by bonding the ends of the two opposing filler plates, which are to form a passage dedicated to the water to be cooled, to the outside air inlet side, to each other. By preventing air from flowing in from the side, a passage dedicated to air or a passage dedicated to cooling water can be easily formed.

According to the cross-flow cooling tower of the third aspect of the present invention, the shielding plate is inserted into the groove formed at the upper end of the two opposing filler plates which are to constitute the air exclusive passage. This prevents the water to be cooled from flowing from above into the space between the filler plates, and forms the two opposed filler plates at the ends on the side of the outside air intake, which constitute a passage dedicated to the water to be cooled. By inserting a shielding plate into the groove formed so that air does not flow from the side between the filler plates, a passage exclusively for air or a passage exclusively for cooling water can be easily formed. In addition, since this shielding plate is detachable, if a groove is formed in the upper end portion or the end portion on the outside air intake side of all the filler plates, the passage in the filler unit can be an air and cooling water passage, The air passage or the cooling water passage can be freely selected and formed.

Further, according to the cross-flow cooling tower of the fourth invention, when a plurality of filler units are superimposed inside the cooling tower, the temperature of the water to be cooled decreases and the passage dedicated to the water to be cooled. For the lower filler unit that does not contribute to the prevention of the generation of white smoke even if it is formed, use a filler unit in which the passage defined by the filler plate is formed as an air and cooling water passage or a dedicated air passage. Thereby, the structure of the filler unit can be simplified.

According to the cross-flow type cooling tower of the fifth invention, when a plurality of filler units are arranged in a plurality of rows inside the cooling tower, the passage defined by the filler plate is air-flowed. A row of a filler unit provided with at least one filler unit formed as a cooling water passage, an air exclusive passage and a cooling water exclusive passage, and a passage defined by the filler plate as an air and cooling water passage. Or, a column is divided into a row of filler units consisting only of a filler unit formed as an air exclusive passage, and a valve disposed in a water supply pipe connected to an upper water tank of each filler unit row is used to control the temperature of the outside air and the temperature. By selectively operating each filler unit row according to the usage of the cross-flow cooling tower such as the temperature of the cooling water, it is possible to properly adjust the heat exchange capacity while preventing the generation of white smoke. it can.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the illustrated embodiment. The cross-flow cooling tower 1 is formed with an outside air intake 2 on the side surface thereof, and has four filler units 3, 4, 5, 6 therein.
Are arranged in two rows with the two filler units 3 and 4 and the filler units 5 and 6 superimposed on each other, and an upper water tank 9 is provided above and a lower water tank 10 is provided below. Furthermore, the exhaust port 1 located above the internal space 14 of the cooling tower 1
5 is provided with a blower 12 driven by a motor 13. The upper water tank 9 has a number of water spouts 91 at its bottom.
And a water supply pipe 7 for guiding water to be cooled from an air conditioner, a factory facility or the like is connected via a valve 8. Also,
The lower water tank 10 is connected to a water pipe 11 for guiding water to be cooled to air conditioning equipment, factory equipment, and the like. In this case, it is desirable to use an electromagnetic valve for the valve 8 provided in the water supply pipe 7, and to provide an outside air intake opening / closing shutter (not shown) in the outside air intake 2 so that the two are interlocked. Can also be configured. The number of filler units provided in the cooling tower is not limited to four, but may be one or more.
The number of overlapping filler units and the number of rows of filler units can also be freely set.

As shown in FIG. 2, the filler units 3 and 4 are provided with a plurality of filler plates 30 and 40 having a large number of irregularities on the surface at a constant interval or an arbitrary interval in order to enhance the heat exchange efficiency. The filler unit 3 includes a passage defined by the filler plate 30 and a passage defined by the air and the cooling water passage 3.
1. Formed as a passage 32 exclusively for air and a passage 33 exclusively for cooling water, and the filler unit 4 forms a passage defined by the filler plate 40 as an air and cooling water passage 41. The air and cooling water passages 31 open the upper ends of the two opposing filler plates 30 and the ends on the outside air intake side so that the cooling water flows from above and air flows in from the sides. Form. The air exclusive passage 32 has an adhesive portion 34a in which the upper ends of two opposing filler plates 30 are adhered to each other.
In this way, the cooling water is prevented from flowing from above between the filler plates, so that only the air flows from the side. The passage 33 exclusively for cooling water is
By making the outside air inlet side ends of the two opposing filler plates 30 adhesive portions 34b adhered to each other so that air does not flow from the sides between the filler plates,
It is formed so that only the water to be cooled flows in from above. The air and cooled water passages 41 are provided with two opposing filler plates 40.
By opening the upper end portion and the outside air intake side end portion, the water to be cooled is formed so that air flows in from above and air flows in from the side. In addition, as the lower filler unit 4 into which the cooled water whose temperature has decreased in the filler unit 3 flows, a filler unit in which a passage defined by a filler plate is formed as air and a cooled water passage 41 is used. However, the same filler unit as the filler unit 3 can be used, or another filler unit described later can be used.

On the other hand, the filler units 5 and 6 use the same combination of the filler units as the filler units 3 and 4, or use other combinations, for example, the filler units 5 and 6.
6 and the passages defined by the filler plate in one or both of the filler units and the filler units 5 and 6 in which all of the passages defined by the filler plate are formed as air and cooling water passages. A filler unit formed as a passage for cooling water and a passage exclusively for air can be used.

In the above embodiment, the filler unit 3
The passages defined by the filler plate 30 are air and cooling water passages 31, air-only passages 32, and cooling water-only passages 33.
Are formed in the same order, but the arrangement and the number of passages are not limited to this. For example, air-dedicated passages 32 may be provided on both sides of the cooling water-dedicated passage 33.

Further, in the above-described embodiment, the lower filler unit 4 has the passages defined by the filler plate 40 formed as the air and cooling water passages 41. However, the present invention is not limited to this, and as shown in FIG. The air / cooled water passage 41 and the air exclusive passage 42 are alternately formed, or the air / cooled water passage 41 is formed at an arbitrary number of air and cooled water passages 41 as shown in FIG. You can also.

Further, the air exclusive passage 32 forms a groove 35 at the upper end of the two opposing filler plates 30, and the groove 35
By inserting the shielding plate 36 into the space between the filler plates so that the water to be cooled does not flow from above,
It can also be formed so that only air flows in from the side. Similarly, the cooling water dedicated passage 33 is formed by forming a groove 37 at the outside air inlet side end of the two opposing filler plates 30 and inserting a shielding plate 38 into the groove 37. By preventing air from flowing in from the sides between the plates, it is possible to form so that only the water to be cooled flows in from above. Since the shielding plates 36 and 38 are detachable, the passages in the filler unit may be freely selected and formed into a passage for air and a water to be cooled, a passage exclusively for air, or a passage exclusively for cooling water. Can be. Further, as shown in FIG. 6, if grooves 35, 37 are formed at the upper end of all the filler plates 30 or at the end on the side of the outside air intake, the shielding plates 36, 38 can be selectively inserted. The passage in the filler unit can be freely selected and formed as an air / cooled water passage, an air exclusive passage, or a cooled water exclusive passage.

The cross-flow cooling tower 1 constructed as described above
In order to perform heat exchange between the water to be cooled and the outside air, as in the conventional cross-flow type cooling tower, the side of the cooling tower 1 is blown by the blower 12 disposed at the exhaust port 15 provided at the upper part of the cooling tower 1. Air is sucked into the cooling tower from the outside air inlet 2 provided in the cooling tower 1, and water is sprayed from the water spray port 91 of the upper water tank 9 by the filler units 3, 4, 5, 6 disposed inside the cooling tower 1. After performing heat exchange with the cooling water, the air is removed from the cooling tower internal space 1.
The water to be cooled is cooled by exhausting air from the exhaust port 4 through the exhaust port 15. In this case, the passage defined by the filler plate 30 is defined as an air / cooled water passage 31, an air exclusive passage 32
The air that has passed through the filler unit 3 formed as the cooling water dedicated passage 33 passes through the air and the cooling water passage 31, and directly exchanges heat with the cooling water to reach a high temperature saturated state. The resulting air and the air that has passed through the dedicated air passage 32 and indirectly exchanged heat with the water to be cooled through the filler plate 30 to be in a high-temperature dry state are mixed. When the air passes through the filler unit 3, the air is heated by the cooling water flowing down the adjacent cooling water dedicated passage 33 via the filler plate 30, and thus has no cooling water dedicated passage. The relative humidity of the air is lower than the relative humidity of the air that has passed through the filler unit, which does not have a conventional passage for cooling water, because the temperature is higher than that of the air that has passed through the filler unit. Becomes And
The air that has passed through the filler unit 3 is mixed with the air that has passed through the other filler units 4, 5, and 6 in the cooling tower internal space 14 and is exhausted from the exhaust port 15. Since the relative humidity is reduced by mixing of the passed air, even when the outside air temperature is low, white smoke generated by supersaturation of the moisture in the air discharged from the exhaust port of the cooling tower Can be effectively prevented.

When a plurality of filler units 3, 4, 5, and 6 are arranged in a plurality of rows inside the cooling tower 1, a water supply pipe connected to the upper water tank 9 of each of the filler unit rows. 7
By operating the valve 8 disposed in the column, the respective filler unit rows are selectively operated according to the use condition of the cross-flow type cooling tower such as the temperature of the outside air and the temperature of the water to be cooled. The heat exchange capacity can be properly adjusted while preventing generation of smoke. In this case, when an outside air intake opening / closing shutter (not shown) is provided in the outside air intake 2, the valve 8 and the outside air intake opening / closing shutter are interlocked,
The outside air intake on the side of the unused filler unit can also be closed.

[0022]

According to the first aspect of the present invention, the passage defined by the filler plate is formed as an air / cooled water passage, an air exclusive passage, and a cooled water exclusive passage. Since the filler unit arranged adjacent to the dedicated passage is used, the air passing through the filler unit is heated by the cooled water flowing down the adjacent cooled water dedicated passage via the filler plate, and in particular, By arranging the passage dedicated to cooling water adjacent to the passage dedicated to air, the air that has passed through the passage dedicated to air becomes high-temperature, dry air. It is possible to effectively prevent the generation of white smoke caused by supersaturation of the moisture in the air discharged from the exhaust port of the cross-flow cooling tower, Special Do equipment and piping is not required, the structure of the cooling tower can be made simple and compact, can be inexpensive manufacturing cost of crossflow cooling towers.

Further, according to the second aspect of the present invention, it is possible to easily form the air exclusive passage or the cooling water exclusive passage,
The manufacturing cost of the filler unit can be reduced.

According to the third aspect of the present invention, a dedicated air passage or a dedicated water passage can be easily formed, and the manufacturing cost of the filler unit can be reduced.
In addition, since the shielding plate is detachable, the passage in the filler unit can be freely selected and formed as an air / cooled water passage and an air exclusive passage or a cooled water exclusive passage. The heat exchange capacity can be appropriately adjusted while preventing the generation of white smoke according to the use condition of the cross-flow cooling tower, such as the temperature of the cooling water and the temperature of the water to be cooled.

According to the fourth aspect of the invention, the structure of the filler unit can be simplified, and the manufacturing cost of the filler unit can be reduced.

According to the fifth aspect of the present invention, a valve provided in a water supply pipe connected to an upper water tank of a plurality of filler unit rows each having a different configuration of a passage defined by the filler plate allows the outside air to be removed. Appropriately adjusts the heat exchange capacity while preventing the generation of white smoke by selectively operating each filler unit row according to the use condition of the cross-flow cooling tower such as the temperature and the temperature of the cooling water can do.

[Brief description of the drawings]

FIG. 1 is a diagram showing a cross-flow cooling tower of the present invention.

FIGS. 2A and 2B are diagrams showing an embodiment of a filler unit used in the cross-flow cooling tower of the present invention, wherein FIG. 2A is a sectional view taken along the line II of FIG. 1 and FIG. 3 shows a cross section.

3A and 3B are diagrams showing one embodiment of a filler unit used in the cross-flow cooling tower of the present invention, wherein FIG. 3A is a sectional view taken along the line II of FIG. 1 and FIG. 3 shows a cross section.

4A and 4B are diagrams showing one embodiment of a filler unit used in the cross-flow cooling tower of the present invention, wherein FIG. 4A is a cross-sectional view taken along line II of FIG. 1 and FIG. 3 shows a cross section.

FIGS. 5A and 5B are diagrams showing one embodiment of a filler unit used in the cross-flow cooling tower of the present invention, wherein FIG. 5A is a main part of a cross section taken along line II of FIG. 1 and FIG. The main part of the II-II section is shown.

FIG. 6 is a diagram showing a main part of one embodiment of a filler unit used in the cross-flow cooling tower of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cross-flow cooling tower 2 Outside air inlet 3 Filler unit 4 Filler unit 5 Filler unit 6 Filler unit 7 Water supply pipe 8 Valve 9 Upper water tank 10 Lower water tank 11 Water pipe 12 Blower 13 Motor 14 Cooling tower internal space 15 Exhaust port 30 Filler plate 31 Air and cooling water passage 32 Air exclusive passage 33 Cooling water exclusive passage 34a Bonding portion 34b Bonding portion 35 Groove 36 Shielding plate 37 Groove 38 Shielding plate 40 Filler plate 41 Air and cooling water passage 42 Passage for exclusive use of air 91 Water spout

 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-61-186782 (JP, A) JP-A-63-190764 (JP, U)

Claims (5)

(57) [Claims] An air blower is disposed at an exhaust port provided at an upper part of a cross-flow cooling tower, and the blower sucks air into the cooling tower from an outside air inlet provided at a side surface of the cooling tower. After performing heat exchange with the water to be cooled sprinkled from the upper water tank by the filler unit disposed inside the cooling tower, cross-flow cooling that exhausts the air from the cooling tower internal space through the exhaust port In the tower, a passage defined by the filler plate in at least one filler unit is formed as an air / cooled water passage, an air exclusive passage, and a cooled water exclusive passage, and the cooled water exclusive passage is used as an air exclusive passage. A cross-flow cooling tower characterized by using a filler unit arranged adjacently. 2. The air-only passage or the water-to-be-cooled passage is formed by bonding an upper end portion or an outside air intake end portion of a filler plate constituting the passage to each other. The cross-flow cooling tower according to claim 1. 3. The air-only passage or the cooling water-only passage is formed by inserting a shielding plate into a groove formed at an upper end portion or an end portion on an outside air intake side of a filler plate constituting the passage. The cross-flow cooling tower according to claim 1, wherein: 4. A cross-flow type cooling tower in which a plurality of filler units are superimposed inside each other, and a passage defined by a filler plate in a lower filler unit is used as air and a passage for cooling water or a passage exclusively for air. The cross-flow cooling tower according to any one of claims 1 to 3, wherein the formed cooling unit is used. 5. A cross-flow type cooling tower, wherein a plurality of filler units are arranged in a plurality of rows, and a valve is provided in a water supply pipe connected to an upper water tank of each of the filler unit rows. 5. The packing unit according to claim 1, wherein at least one row of packing units is formed by using a packing unit in which a passage defined by a packing plate is formed as an air and cooling water passage or a passage dedicated to air. The cross-flow cooling tower according to any one of the above.