JPH07113597A - Open type cooling tower - Google Patents

Abstract

PURPOSE:To obtain an open type cooling tower which can be increased in capacity without an increase in the plane installation area. CONSTITUTION:An open type cooling tower consists of a tower structure 1, a fan installed on top of the tower structure 1, a water distribution device 4 below the fan, a counterflow and crossflow fills 5 and 6 under the distribution device 4 and a cold-water basin 11 under the fills 5 and 6. Air suction openings 10a and 10b are provided in the sides or the underside of the crossflow fill 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an open type cooling tower used for air conditioning equipment.

[0002]

2. Description of the Related Art Conventionally, for example, a so-called counterflow type cooling tower shown in FIG. 4 is known as such an open type cooling tower.

In the figure, 21 is a blower, 22 is a sprinkler pipe provided below the blower 21, and a counterflow filler 23 is provided below the sprinkler pipe 22. In this cooling tower, by operating the blower 21, the air intake opening 2 provided below the tower body 24
From 5, the cooling air is sucked upward in the filling material 23 and comes into contact with the sprayed water from the sprinkling pipe 22 in the filling material 23 to perform heat exchange. The sprayed water is collected in the lower water tank 26 and is recycled.

This counterflow type cooling tower is widely used especially for small cooling towers because it has high heat exchange efficiency and can be made compact.

However, in the counter flow type cooling tower, since the cooling air flows upward and flows against the sprayed water, the pressure loss tends to increase significantly if the packing material is made bulky in order to increase the cooling capacity. Therefore, it is impossible to make the filler more than a certain height. For this reason,
When increasing the size of the cooling tower, it is necessary to increase the planar area of the packing material.

On the other hand, in the case of the cross flow type cooling tower shown in FIG. 5, by operating the blower 26, the cooling air is sucked from the air intake opening 28 provided on the side surface of the cross flow filler 27, and this cooling is performed. The air and the sprayed water from the upper water tank 29 come into contact with each other in a substantially orthogonal direction to perform heat exchange. Therefore, even if the packing material 27 is made bulky, the pressure loss does not increase unlike the counterflow type, and a large cooling tower can be obtained.

[0007]

However, in the case of the conventional cross-flow type cooling tower, as shown in FIG. 5, an open space S is required at the center position of the cooling tower, that is, below the blower 26, which is large. This is a cause of increasing the planar installation area in the case of becoming more complicated.

In order to reduce the planar area of the cooling tower shown in FIG. 5, for example, the upper water tank 29 may be a sprinkler tube system shown in FIG. 4 to eliminate the open space S. In this case, However, since air is sucked only from the upper portion of the cross flow filler 27 and it is difficult to suck air from the lower portion, there is a problem that it is difficult to balance the capabilities of the blower and the cross flow filler 27.

Therefore, the problem to be solved in the present invention is to provide an open type cooling tower which can be increased in size without increasing the planar installation area.

[0010]

In order to solve the above-mentioned problems, the open type cooling tower of the present invention has a sprinkler, a counterflow filling material and a crossflow filling below a blower provided at the top of the tower body. A material and a lower water tank are sequentially provided, and an air suction opening is further provided on a side surface side of the crossflow filling material.

The term "counterflow filler" as used herein means
Circulating water flow from above and air flow from below refer to a filler that performs heat exchange while mutually diffusing due to the molding shape inside the filler, and a cross-flow filler is a filler of circulating water flow from above. A filler that enhances the diffusion inside and the inflow of air from the side surface and the horizontal airflow diffusion inside the filler.

[0012]

[Function] The counterflow filler provided in the upper stage prevents the short-flow of the air flow passing unevenly in the upper filler, which occurs when the crossflow filler is simply provided in two stages. It is possible to prevent the heat exchange efficiency from being deteriorated due to the insufficient air flow of the filling material.

Further, by making the crossflow filler bulky, it is possible to improve the cooling capacity without increasing the pressure loss as compared with the counterflow filler.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The features of the present invention will be specifically described below with reference to the embodiments shown in the drawings.

FIG. 1 is a front view showing an open type cooling tower according to an embodiment of the present invention with a part thereof cut away. In the figure, solid arrows indicate the flow of air, and broken arrows indicate the flow of spray water.

Reference numeral 1 denotes a tower body composed of a steel aggregate and an FRP outer plate. A blower 2 is provided at a central position of an upper portion of the tower body 1, and an eliminator 3 for preventing circulating water scattering is opened below the blower 2. It is provided on almost the entire surface of. Reference numeral 4 denotes a pipe as a water sprinkling device, and a water sprinkling port 4a is evenly formed in a portion where the pipe 4 is located inside the tower body 1.

Further, below the sprinkling pipe 4, a counter flow filling material 5 and a cross flow filling material 6 are laminated on the upper stage.

As shown in the perspective view of FIG. 2, the counter flow filling material 5 is formed by laminating a plurality of synthetic resin filling material sheets 7 and 8 in which continuous chevron shapes 7a and 8a are formed. The sheet 7 has a chevron 7a downwardly downward in the figure, and the filler sheet 8 adjacent to the chevron 7a has a chevron 8a.
Is going down to the right.

With such a structure, the spray water and the cooling air form the space formed between the adjacent filler sheets 7 and 8 along the ridges 7a and 8a.
It can be moved only up and down while being dispersed throughout.

On the other hand, the cross-flow filler 6 is shown in FIG.
As shown in the front view of FIG. 3B, a plurality of synthetic resin filler sheets 9 are superposed as shown in FIG.
A large number of wart-shaped protrusions 9a are formed on the surface of the filler sheet 9 at equal intervals, and a plurality of filler sheets 9 are superposed so that the protrusions 9a abut.

With such a structure, in the crossflow filler 6, air and spray water can move in the horizontal and vertical directions in the spaces between the respective filler sheets 9.

Returning to FIG. 1, the air suction opening 10 is provided on each of the side surface and the bottom surface of the crossflow filler 6.
a and 10b are provided, and below the cross-flow filler 6, a lower water tank 11 for receiving and circulating and utilizing sprayed water is provided.

In the above structure, the blower 2 is operated to cool the inside of the crossflow filler 6 from the air suction openings 10a and 10b formed in the side surface and the bottom of the crossflow filler 6. Air is sucked.
Here, the cooling air and the sprayed water discharged from the sprinkling pipe 4 are
The first heat exchange is performed by contacting the surface of the cross-flow filler 6 while being dispersed. Further, the cooling air is sucked into the upper counterflow filler 5, and here also the second heat exchange is performed while being dispersed throughout.

Due to such packing arrangement and tower structure,
It is easy to expand the air inflow area to the inside of the fillers 5 and 6, and the high water load type operation that increases the circulating water amount and the high air load type operation by increasing the blower air volume are used to cool the cooling tower per unit installation space. You can improve your ability.

[0025]

As described above, the two-stage structure of the counter flow filler and the cross flow filler enables the cooling capacity to be improved without increasing the pressure loss, thus providing a flat installation area. It is possible to obtain an open type cooling tower which can be increased in size without increasing the temperature.

[Brief description of drawings]

FIG. 1 is a front view showing an open type cooling tower which is an embodiment of the present invention with a part thereof cut away.

FIG. 2 is a perspective view of a counterflow filler.

FIG. 3 (a) is a side view of a cross-flow filler,
(B) is the same front view, (c) is a perspective view which shows a water flow direction and an air flow direction.

FIG. 4 is a vertical sectional view of a conventional counter flow type cooling tower.

FIG. 5 is a vertical cross-sectional view of a conventional cross-flow type cooling tower.

[Explanation of symbols]

 1 Tower 2 Blower 3 Eliminator 4 Piping (Sprinkler) 4a Sprinkler 5 Counterflow Filler 6 Crossflow Filler 7,8 Counterflow Filler Sheet 9 Crossflow Filler Sheet 9a Protrusions 10a, 10b Air Suction opening

Claims (2)

[Claims] 1. A sprinkler, a counterflow filling material, a crossflow filling material, and a lower water tank are sequentially provided below a blower provided at an upper part of the tower body, and further on a side surface side of the crossflow filling material. An open type cooling tower, which is provided with an air intake opening. 2. The open type cooling tower according to claim 1, wherein an air suction opening is provided on a bottom surface side of the cross flow filler.