JPH0979793A - Orthogonally intersection flow type cooling tower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cooling capacity equivalent to the magnification of a cooling tower. SOLUTION: A water receiving pan 5 is arranged between a filler unit 3, at a higher position, and another filler unit 3, at a lower position, while a water spray pan 6, having numberless of water spray holes, is arranged below said water receiving pan 5. The water receiving pan 5a, arranged at the side of an air intake port 11, is communicated with the water spray pan 6 arranged at the side of an air chamber 12 while the water receiving pan 5a, arranged at the side of air chamber 12, is communicated with the water spray pan 6, arranged at the air intake port 11 side. Accordingly, a cooling capacity equivalent to the magnification of the cooling tower and the scale-up of the filler unit can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross flow type cooling tower which has improved cooling efficiency in a super large size cooling tower.

[0002]

2. Description of the Related Art A cross-flow cooling tower of this type is designed such that the water to be cooled, which is sprayed from above, flows down between filler units while heat is exchanged by air introduced from an air inlet provided on the side wall of the tower body. , This heat-exchanged air is guided to the air chamber provided in the center of the tower and discharged from the exhaust port provided above it, but with the enlargement of buildings and factory facilities and the development of district heating and cooling systems. , The cooling tower is getting bigger.

[0003]

By the way, in order to increase the capacity of the cooling tower by enlarging it, a measure is taken to increase the length of the filler unit from the air intake side to the air chamber side. In some cases, increasing the length of the filler unit in the air flow direction did not improve the performance as expected. That is, since the wet-bulb temperature of the air passing between the filler units increases as it moves from the air intake side to the air chamber side, the cooled water flowing between the filler units on the air chamber side becomes wet. It is not cooled due to contact with air that has a high sphere temperature. Therefore, even if the cooling tower is enlarged, the expected cooling capacity cannot be obtained.

The present invention has solved the above problems and provides a cross flow type cooling tower which can obtain a cooling capacity commensurate with an increase in size of the cooling tower by improving cooling efficiency.

[0005]

According to the present invention, an upper water tank is provided above a tower body, and a plurality of filling material units are vertically arranged below the upper water tank so that the water to be cooled sprinkled from the upper water tank. While flowing down between the packing material units, heat is exchanged with the air introduced from the air intake provided on the side wall of the tower body, and this heat-exchanged air is guided to the air chamber provided in the central portion of the tower body and is upwardly located there. This is a cross-flow cooling tower that discharges from the provided exhaust port, and the water to be cooled that has flowed down the air intake side of the upper filling unit is sprayed to the air chamber side of the lower filling unit, and the upper filling The cooling water flowing down the air chamber side of the material unit is sprayed to the air intake side of the lower filling material unit.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a cross-sectional view of a cross-flow cooling tower showing an embodiment of the present invention, FIG. 2 is a cross-sectional view of essential parts of the cross-flow cooling tower shown in FIG. 1, and FIG. 3 is another embodiment of the present invention. 1 is a sectional view of an essential part showing an example, in which 1 is a tower, 2 is an upper water tank, 3 is a filler unit, 4 is a lower water tank, 5 is a water receiving tray, and 6 is a sprinkling tray.

On both sides of the tower body 1, a filler unit 3 in which a large number of plastic plates are laminated is arranged vertically in a plurality of stages, and a louver is provided on a side wall close to the filler unit 3. An air intake 11 is provided. An upper water tank 2 is provided above the filler unit 3,
Water to be cooled is sprinkled on the filler unit 3 through a large number of small holes provided in the bottom wall of the upper water tank 2.

Further, an air chamber 12 is provided between the filler units 3, 3 on both sides corresponding to the central portion of the tower body 1, and an air exhaust port 13 is provided above the air chamber 12. ing. A fan 7 connected to the motor is provided at the exhaust port 13.
The air inside the tower body 1 is discharged from the exhaust port 13 by the rotation of the fan 7, and the air flows in from the air intake port 11.

On the other hand, below the tower body 1, a lower water tank 4 is disposed so as to extend below the filler units 3 and 3 on both sides and the air chamber 12, and the lower water tank 4 is sprayed from the upper water tank 2. The water to be cooled is heat-exchanged with the air flowing in from the air inlet 11 when sequentially flowing down between the filler units 3 arranged in a plurality of stages above and below, and is collected in the lower water tank 4. Then, the cooling water collected in the lower water tank 4 uses a pump 8 as a heat medium.
The water to be cooled, which has been transported to the load unit 9 such as a condenser and has undergone heat exchange in the load unit 9, is circulated and supplied to the upper water tank 2.

According to the present invention, in the cross flow type cooling tower having the above-mentioned structure, the water receiving tray 5 is provided between the upper filling material unit 3 and the lower filling material unit 3, and innumerable below the water receiving tray 5. The water spray tray 6 having the water spray holes is disposed. The water receiving tray 5 and the water spray tray 6 are bisected at an intermediate position between the air intake 11 side and the air chamber 12 side, and the water receiving tray 5a located on the air intake 11 side and the water sprinkler located on the air chamber 12 side. Dish 6b
The water receiving tray 5 located on the side of the air chamber 12 that communicates with a pipe.
b and the sprinkler 6a located on the air intake 11 side are connected by a pipe.

For this reason, the water to be cooled which has flowed down on the side of the air intake 11 of the upper filling material unit 3 is collected by the water receiving tray 5a and then flows into the sprinkling tray 6b, and the lower filling material unit 3 is collected.
Is sprayed to the air chamber 12 side. On the other hand, the water to be cooled that has flowed down between the upper filling material units 3 on the air chamber 12 side is collected by the water receiving tray 5b and then flows into the sprinkling tray 6a, and the lower filling material units on the air intake 11 side. Sprinkled on 3.

As a result, the water to be cooled, which has been sprayed from the upper water tank 2, flows down through each filler unit 3 while the air intake 1
It repeatedly passes through the first side and the air chamber 12 side, and is efficiently cooled in a well-balanced manner. That is, the water to be cooled comes into contact with the air having a low wet-bulb temperature when flowing down the side of the air intake 11 and is efficiently cooled, and comes into contact with the air having a high wet-bulb temperature when flowing down the side of the air chamber 12 next. Heat exchange is not promoted.
Therefore, the water to be cooled sprayed from the upper water tank 2 is efficiently cooled in a well-balanced manner while sequentially flowing down the filling material units 3 arranged in a plurality of upper and lower stages.

FIG. 3 shows a structure in which the water to be cooled flowing down the central portion of the filler unit 3 is allowed to fall as it is, and the water to be cooled flowing down to the air intake 11 side is supplemented by the water receiving tray 5a. After being collected, it is led to the water spray tray 6b and sprayed to the air chamber 12 side, and the cooled water flowing down the air chamber 12 side receives the water receiver tray 5b.
After being collected by, the water is led to the water spray tray 6a and sprayed to the air intake 11 side. Also in the case of this embodiment,
The same effect as that of the above embodiment can be expected.

[0014]

As described above in detail, in the cross flow type cooling tower of the present invention, the water to be cooled which has flowed down the air intake side of the upper filler unit is sprayed to the air chamber side of the lower filler unit. At the same time, the cooled water that has flowed down the air chamber side of the upper filler unit is sprayed to the air intake side of the lower filler unit, so the cooled water sprayed from the upper water tank is balanced and efficient. Is cooled. Therefore, when the cross-flow cooling tower of the present invention is used, the cooling capacity can be obtained in proportion to the size of the cooling tower and the scale-up of the filler unit.

[Brief description of drawings]

FIG. 1 is a half sectional view of a cross-flow cooling tower showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of essential parts of the cross-flow cooling tower shown in FIG.

FIG. 3 is a sectional view of an essential part showing another embodiment of the present invention.

[Explanation of symbols]

 1 Tower 2 Upper water tank 3 Filler unit 4 Lower water tank 5 Water receiving tray 6 Sprinkling tray 11 Air inlet 12 Air chamber

Claims (2)

[Claims] 1. An upper water tank (2) is provided above the tower body (1), and a plurality of packing material units (3) are vertically arranged below the upper water tank (2) to form an upper water tank (2). The water to be cooled that has been sprayed more is exchanged with the air introduced from the air inlet (11) provided on the side wall of the tower body (1) while flowing down between the filler units (3), and the heat-exchanged air is exchanged. A cross-flow type cooling tower which guides the air to an air chamber (12) provided in the central part of the tower body (1) and discharges it from an exhaust port (13) provided above the air chamber (12). The water to be cooled that has flowed down the air intake (11) side is sprayed to the air chamber (12) side of the lower filling material unit (3), and the air chamber (12) side of the upper filling material unit (3) is The cooled water that has flowed down is supplied to the air inlet (1) of the lower filler unit (3).
1) A cross-flow cooling tower characterized by being sprayed on the side. 2. A water receiving tray (5) between an upper filling material unit (3) and a lower filling material unit (3), and a myriad of water sprinkling holes below the water receiving tray (5). A water receiving tray (5) provided with a water spray tray (6) and arranged on the air intake (11) side.
a) is communicated with the water spray tray (6b) arranged in the air chamber (12), and the water tray (5) arranged on the air chamber (12) side.
Sprinkler (6a) with b) arranged on the side of the air intake (11)
The cross-flow cooling tower according to claim 1, wherein the cross-flow cooling tower is communicated with the cross flow type cooling tower.